nvcsr
 
 
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM N-CSR
CERTIFIED SHAREHOLDER REPORT OF REGISTERED
MANAGEMENT INVESTMENT COMPANIES
INVESTMENT COMPANY ACT FILE NUMBER: 811-21080
EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER: Calamos Convertible Opportunities and Income Fund
     
ADDRESS OF PRINCIPAL EXECUTIVE OFFICES:
  2020 Calamos Court, Naperville,
 
  Illinois 60563-2787
 
   
NAME AND ADDRESS OF AGENT FOR SERVICE:
  John P. Calamos, Sr., President,
 
  Calamos Advisors LLC
 
  2020 Calamos Court
 
  Naperville, Illinois
 
  60563-2787
REGISTRANT’S TELEPHONE NUMBER, INCLUDING AREA CODE: (630) 245-7200
DATE OF FISCAL YEAR END: October 31, 2010
DATE OF REPORTING PERIOD: November 1, 2009 through October 31, 2010
 
 


 

ITEM 1.   REPORTS TO SHAREHOLDERS
 
Include a copy of the report transmitted to stockholders pursuant to Rule 30e-1 under the Act (17 CFR 270. 30e-1).
 


 


TABLE OF CONTENTS
     
     
Letter to Shareholders   1
     
The Calamos Closed-End Funds: An Overview   4
     
Investment Team Discussion   5
     
Schedule of Investments   8
     
Statement of Assets and Liabilities   17
     
Statement of Operations   18
     
Statements of Changes In Net Assets   19
     
Statement of Cash Flows   20
     
Notes to Financial Statements   21
     
Financial Highlights   30
     
Report of Independent Registered Public Accounting Firm   31
     
Trustee Approval of Management Agreement   32
     
Tax Information   34
     
Trustees & Officers   35
     
About Closed-End Funds   37
     
Level Rate Distribution Policy   38
     
Automatic Dividend Reinvestment Plan   38
     
The Calamos Investments Advantage   40
(CALAMOS LOGO)
Experience and Foresight
 
About Calamos Investments
For more than 30 years, we have helped investors like you manage and build wealth to meet their long-term individual objectives by working to capitalize on the opportunities of the evolving global marketplace. We launched our first open-end mutual fund in 1985 and our first closed-end fund in 2002. Today, we manage five closed-end funds. Two are total-return oriented offerings, which seek current income, with increased emphasis on capital gains potential. Three are enhanced fixed-income offerings, which pursue high current income from income and capital gains. Calamos Convertible Opportunities and Income Fund (CHI) falls into this category. Please see page 4 for a more detailed overview of our closed-end offerings.
 
We are dedicated to helping our clients build and protect wealth. We understand when you entrust us with your assets, you also entrust us with your achievements, goals and aspirations. We believe we best honor this trust by making investment decisions guided by integrity, by discipline, and by our conscientious research.
 
We believe that an active, risk-conscious approach is essential for wealth creation. In the 1970s, we pioneered low-volatility equity strategies, which seek to participate in equity market upside and mitigate some of the potential risks of equity market volatility. Our investment process seeks to manage risk at multiple levels and draws upon our experience investing through multiple market cycles.
 
We have a global perspective. We believe that globalization offers tremendous opportunities for countries and companies all over the world. In our view, this creates significant opportunities for investors. In our U.S., global and international portfolios, we are seeking to capitalize on the potential growth of the global economy.
 
We believe there are opportunities in all markets. Our history traces back to the 1970s, a period of significant volatility and economic concerns. We have invested through multiple market cycles, each with its own challenges. Out of this experience comes our belief that the flipside of volatility is opportunity.


 

Letter to Shareholders

(PHOTO)
JOHN P. CALAMOS, SR.
Chairman, CEO/Co-CIO
 
Dear Fellow Shareholder:
 
Welcome to your annual report for the year ended October 31, 2010. On behalf of the team here at Calamos, I appreciate the opportunity to correspond with you. I invite you to review this report, which includes market commentary and other insights from the investment team. This report also includes a listing of portfolio holdings, financial data and highlights, as well as detailed information about the performance and asset allocation of your Fund.
 
As we will discuss at greater length in the commentary beginning on page 5, the Fund provided a steady stream of monthly distributions, as well as double-digit total returns. We believe that this speaks to the merits of our innovative enhanced fixed-income strategy—particularly given the persistently low interest rates in many areas of the fixed-income market.
 
CHI provided a steady distribution stream and total return, despite the challenges of a low-interest rate environment. To us, this demonstrates the benefits of including enhanced fixed-income strategies within a long-term asset allocation.
 
A Focus on Steady Distributions
In this Fund, we employ a level rate distribution policy. This means that we endeavor to keep distributions consistent from month to month. We do this because we understand that many of our investors may prefer a steady stream of distributions, rather than distributions that fluctuate monthly. We therefore take a longer-term approach to setting the monthly distribution rate. We and the Fund’s Board of Trustees are steadfast in our commitment to providing a distribution that we believe is sustainable over the long term. We monitor the investment environment on an ongoing basis to ensure that the distribution rate is appropriate given the market opportunity.
 
Our Use of Leverage
We believe that this is an environment that is conducive to the prudent use of leverage, as a means of enhancing total return and supporting the Fund’s distribution rate. During the period, our use of leverage enhanced returns. We were able to borrow at attractive rates, invest the proceeds and achieve a greater return than the cost of leverage. We intend to judiciously use leverage, provided that we believe it will benefit shareholders.

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   1


 

Letter to Shareholders

 
The Economic and Market Environment
Convertible securities and high-yield bonds advanced over the reporting period. Convertible securities gained 20.66%, as measured by the BofA ML All U.S. Convertibles Ex-Mandatory Index, while the Credit Suisse High Yield Index gained 18.47%. Within the convertible market, valuations continued to improve alongside a rising equity market, but remain attractive on the whole. In the high-yield market, investors’ thirst for yield in a global low-interest rate environment has helped elevate prices, as has a massive amount of new issuance, strong corporate results and the slowing pace of defaults. Against this backdrop, the lowest-quality issues performed with particular strength, as was the case in the convertible market. We, however, believe that a more prudent approach is appropriate, given our long-term focus and the potential for slower economic recovery. We intend to continue with our more conservative credit selection process.
 
The annual period was also notable for its volatility. Investors focused on economic concerns in European markets, such as Greece, and the potential for ripple effects across global markets. Unemployment and a slower economic recovery in the U.S. also remained at the forefront of investors’ considerations, as did the potential impact of health care legislation, stimulus spending, the deficit, additional quantitative easing (the practice of printing more money to stimulate spending), the election cycle and tax policy.
 
Yet, there were many positive developments. We have seen encouraging signs of global rebalancing: rebounding global trade, an increase in consumption and growth from emerging markets, and increased exports and deleveraging from developed markets. We’ve also seen a significant recovery in the velocity of money in the U.S. (a key measure of how rapidly money is flowing through the economy and a gauge of economic activity).
 
Staying Focused On Opportunity
I often have the privilege of speaking with investors in our funds, and I know that uncertainty and volatility are never comfortable. However, I have been investing for more than 40 years, first for my family and then for my clients. In all these years, I have yet to see a “normal” environment. To me, what this means is that volatility and uncertainty aren’t reasons for staying on the sidelines—they are instead reasons for taking a risk-conscious, thorough and long-term approach, which is what the investment team at Calamos does. As we assess the current environment, our team continues to find attractively valued securities. We continue to largely avoid the most speculative grade issues because we believe that the incremental yield is not sufficient compensation for the potential downside risks.
 
The Importance of Global Perspective
We believe that investors should think more globally than ever before. Our investment team is extremely excited about the investment potential that globalization has created. While we are seeing more moderate growth in the U.S. economy, more rapid growth is occurring elsewhere, particularly in some of the developing markets, such as India and China. There are many powerful secular trends that we believe will drive global growth in decades to come.

         
2   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

Letter to Shareholders

 
One of the most far-reaching is the growth of a middle class in developing markets. This mega-trend has tremendous implications for infrastructure building and consumer spending, among other factors. The growth in global economies is something in which companies all over the world—including those in the U.S—can participate.
 
In this Fund, we are biased toward U.S. companies with global strategies and geographically diversified revenues to take advantage of a growing global economy. We are also emphasizing companies with reliable debt servicing, respectable balance sheets and prospects for sustainable growth. We utilize exacting proprietary credit research to balance risk and reward considerations.
 
We hope this report provides you a meaningful update about your investment in CHI. If you would like any information about the Fund or our other closed-end offerings, please contact your financial advisor or our client services team at 800.582.6959 (Monday through Friday from 8:00 a.m. to 6:00 p.m., Central Time). You can also visit us at www.calamos.com.
 
We are honored that you have chosen Calamos to help you achieve your investment goals. We look forward to serving your needs in the years to come.
 
Sincerely,
 
-s- John P. Calamos, Sr.
 
John P. Calamos, Sr.
Chairman, CEO and Co-CIO
Calamos Advisors LLC
 
 
This report is for informational purposes only and should not be considered investment advice.

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   3


 

The Calamos Closed-End Funds: An Overview

 
In our closed-end funds, we draw upon decades of investment experience, including a long history of opportunistically blending asset classes in an attempt to capture upside potential while managing downside risk. We launched our first closed-end fund in 2002.
 
Closed-end funds are long-term investments. Most focus on providing monthly distributions, but there are important differences among individual closed-end funds. Calamos closed-end funds can be grouped into two broad categories: (1) enhanced fixed income and (2) total return. Funds in both groups provide a monthly distribution stream and invest in a combination of asset classes.
 
     
OBJECTIVE: ENHANCED FIXED INCOME   OBJECTIVE: TOTAL RETURN
 
     
Portfolios Positioned to Pursue High Current Income from Income and Capital Gains   Portfolios Positioned to Seek Current Income, with Increased Emphasis on Capital Gains Potential
     
     
Calamos Convertible Opportunities and Income Fund (Ticker: CHI)   Calamos Global Total Return Fund
(Ticker: CGO)
Invests in high-yield and convertible securities, primarily in U.S. markets   Invests in equities and higher-yielding convertible securities and corporate bonds, in both U.S. and non-U.S. markets
 
     
Calamos Convertible and High Income Fund
(Ticker CHY)
  Calamos Strategic Total Return Fund
(Ticker: CSQ)
 
Invests in high-yield and convertible securities, primarily in U.S. markets   Invests in equities and higher-yielding convertible securities and corporate bonds, primarily in U.S. markets
     
     
Calamos Global Dynamic Income Fund
(Ticker: CHW)
   
Invests in global fixed-income securities, alternative investments and equities    
 
     
     
 
Our Level Rate Distribution Policy
Investors often choose a closed-end fund because they seek a steady stream of income. In recognition of this, all five Calamos closed-end funds have adopted a level distribution policy. Our policy is to pay a distribution reflective of the funds’ past results and projected earnings potential through income as well as capital gains. Our team is focused on delivering an attractive monthly distribution, while maintaining a long-term focus on risk management. The level of the funds’ distributions can be greatly influenced by market conditions, including the interest rate environment. The funds’ distributions will depend on the individual performance of positions the funds hold, our view of the benefits of retaining leverage, fund tax considerations, and maintaining regulatory requirements.
 
For more information about any of these funds, we encourage you to contact your financial advisor or Calamos Investments at 800.582.6959 (Monday through Friday from 8:00 a.m. to 6:00 p.m., Central Time). You can also visit us at www.calamos.com.
 
For more information on our level rate distribution policy, please see page 38.

         
4   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

Investment Team Discussion

 
                     
TOTAL RETURN* AS OF 10/31/10
Common Shares – Inception 6/26/02
        Since
   
    1 Year   Inception**    
On Market Price
    26.02 %     10.26 %    
                     
On NAV
    19.12 %     10.62 %    
 
 
*Total return measures net investment income and net realized gain or loss from portfolio investments, and change in net unrealized appreciation and depreciation, assuming reinvestment of income and net realized gains distributions.
  **  Annualized since inception.  
 
             
SECTOR WEIGHTINGS
Energy
    17.2 %    
             
Materials
    14.8      
 
Information Technology
    14.6      
             
Consumer Discretionary
    11.9      
 
Industrials
    10.5      
             
Health Care
    9.1      
 
Financials
    7.4      
             
Consumer Staples
    4.8      
 
Telecommunication Services
    4.0      
             
Utilities
    1.1      
 
 
Sector Weightings are based on managed assets and may vary over time. Sector Weightings exclude any government/sovereign bonds or options on broad market indexes the portfolio may hold.
 
CONVERTIBLE OPPORTUNITIES AND INCOME FUND
INVESTMENT TEAM DISCUSSION
 
The Calamos Investment Management Team, led by Co-Chief Investment Officers John P. Calamos, Sr. and Nick P. Calamos, CFA, discusses the Fund’s performance, strategy and positioning during the one-year period ended October 31, 2010.
 
Q. Before discussing the performance of the Fund during the one-year period, please provide an overview of its strategy and role within an asset allocation.
A. Calamos Convertible Opportunities and Income Fund (CHI) is an enhanced fixed income offering, seeking total return through a combination of capital appreciation and current income. It provides an alternative to funds investing in investment-grade fixed-income instruments, and seeks to be less sensitive to interest rates. Like all five Calamos closed-end funds, CHI seeks to provide a steady stream of distributions paid out on a monthly basis and invests in multiple asset classes. (Please see page 4 for more information about our closed-end funds.)
 
We invest in a diversified portfolio of convertible securities and high-yield securities. The allocation to each asset class is dynamic, and reflects our view of the economic landscape as well as the potential of individual securities. By combining these asset classes, we believe that we are well positioned to generate capital gains as well as income. The broader range of security types also provides us with increased opportunities to manage the risk and reward characteristics of the portfolio over full market cycles.
 
While we invest primarily in securities of U.S. issuers, we favor those companies that are actively participating in globalization, with geographically diversified revenue streams and global business strategies. We seek companies with respectable balance sheets, reliable debt servicing, and good prospects for sustainable growth.
 
SINCE INCEPTION MARKET PRICE AND NAV HISTORY THROUGH 10/31/10
 
(LINE GRAPH)

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   5


 

Investment Team Discussion

 
Q. How did the Fund perform during the reporting period?
A. CHI gained 19.12% on a net asset value (NAV) basis for the one-year period ended October 31, 2010. On a market price basis, the Fund returned 26.02%. NAV returns measure the performance of the individual securities in the Fund’s portfolio. Market price returns are based on market values—the price of a share in the market.
 
The Fund began the reporting period with a discount of -3.63% and ended the period trading at a premium of 1.95%. Discount refers to the percentage that the Fund’s publicly traded price is relative to the market value or net asset value of the securities owned. We view this premium as a favorable recognition from the market for the Fund’s long-term performance and competitive income distributions.
 
Q. Did the Fund provide steady distributions during the annual period?
A. The Fund provided shareholders with a steady distribution stream, with monthly distributions of $ 0.0950. The Fund’s current annualized distribution rate was 8.71% of market price as of the close of the reporting period.
 
We believe that this distribution level and rate are very competitive, given broader economic and market conditions. Indeed, during the reporting period, very low interest rates and yields remained the norm throughout much of the marketplace. As of the close of the reporting period, the dividend yield of the stocks in the S&P 500 Index was roughly 1.9%, on average. Ten-year U.S. Treasury bonds yielded 2.6% and 30-Year U.S. Treasury bonds yielded 4.0%.
 
Additionally, we would note that under its level rate distribution policy, the Fund distributes income and short-term capital gains on a monthly basis and long-term capital gains at the Fund’s fiscal year end and calendar year end. The Fund had capital loss-carry forwards from the previous fiscal year, which were offset against a portion of gains. As a result, these gains were not available to be distributed during the current fiscal year.
 
Q. What were some of the most important factors influencing performance during the period?
A. As investors sought income in a low-rate environment, the Fund benefited from its stakes in high yield bonds and convertible securities as spreads compressed, driving prices up. However, this appetite for yield led investors to favor the most speculative tiers in the convertible and high-yield securities markets. We, however, believe that income considerations must be measured against default risk, and that this analysis must be particularly rigorous in an economic environment where challenges still remain. Our goal is to invest in securities that provide a yield or distribution, while offering good prospects for longer-term total return. Given these considerations, the Fund was significantly underweighted in the lowest-quality issues that led in the convertible and high yield market. As long-term and risk-conscious investors, we believe that this positioning is appropriate in the current environment.
 
Turning to sector- and security-level influences, the Fund was well served by our security selection within the materials sector, where holdings performed strongly compared to the Credit Suisse High Yield Index. The Fund was also underweighted relative to the index in the utilities sector, and this enhanced performance. In contrast, security selection within the energy and financial sectors hindered the pace of gains.

         
6   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

Investment Team Discussion

 
Q. What is your outlook for the Fund?
A. We believe that CHI remains a compelling choice for investors seeking income-oriented total return. While we believe that the Fund’s use of convertible securities and high-yield bonds is advantageous in all market environments, it is our view that the merits of our approach may be particularly important in the current environment. Unlike funds that invest in one type of fixed-income security to generate income—for example, U.S. Treasurys or municipal bonds—this enhanced fixed-income fund has more sources to draw from for income potential. More importantly, high-yield securities and convertible securities have a higher degree of equity sensitivity, and are generally recognized as being less sensitive to interest rates than government bonds. We believe that this is an important distinction, given our concerns that quantitative easing and government debt build-up could stoke inflation, which could take a more significant toll on U.S. Treasurys.
 
Using our highly selective approach, we continue to find attractive opportunities in convertible and high-yield markets. We believe that our risk-conscious approach will serve the Fund in good stead—including our emphasis on companies with respectable balance sheets, good business strategies and, where possible, globally diversified revenues. As we discussed, we believe that the economic environment calls for a cautious approach to the lowest grade securities, and we believe our higher-quality bias is appropriate.

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   7


 

Schedule of Investments  October 31, 2010

                 
PRINCIPAL
       
AMOUNT       VALUE
CORPORATE BONDS (67.2%)
         
        Consumer Discretionary (11.9%)
  3,392,000     Asbury Automotive Group, Inc.
7.625%, 03/15/17
  $ 3,341,120  
  4,846,000     Cooper Tire & Rubber Company
8.000%, 12/15/19
    5,051,955  
  5,113,000     DISH Network Corp.µ
7.125%, 02/01/16
    5,445,345  
  1,142,000     GameStop Corp.
8.000%, 10/01/12
    1,183,398  
        General Motors Corp.**        
  8,723,000     7.200%, 01/15/11     3,074,858  
  1,454,000     7.125%, 07/15/13     516,170  
        Goodyear Tire & Rubber Company        
  2,423,000     8.250%, 08/15/20     2,592,610  
  1,319,000     7.000%, 03/15/28µ     1,279,430  
  5,573,000     Hanesbrands, Inc.µ‡
4.121%, 12/15/14
    5,586,932  
  3,877,000     Hasbro, Inc.µ
6.600%, 07/15/28
    3,997,458  
  1,095,000     Interpublic Group of Companies, Inc.µ
10.000%, 07/15/17
    1,303,050  
  5,680,000     Jarden Corp.
7.500%, 05/01/17
    6,070,500  
  2,687,000     Kellwood Company
7.625%, 10/15/17
    1,424,110  
  2,908,000     Liberty Media Corp.µ
8.250%, 02/01/30
    2,926,175  
  2,908,000     Live Nation Entertainment, Inc.*
8.125%, 05/15/18
    3,009,780  
  4,362,000     MGM Resorts International
8.375%, 02/01/11
    4,427,430  
  4,139,000     NetFlix, Inc.µ
8.500%, 11/15/17
    4,656,375  
        Royal Caribbean Cruises, Ltd.µ        
  4,846,000     7.500%, 10/15/27     4,882,345  
  1,939,000     7.250%, 06/15/16     2,123,205  
  969,000     7.000%, 06/15/13     1,053,788  
        Service Corp. Internationalµ        
  6,785,000     7.500%, 04/01/27     6,734,112  
  1,939,000     7.625%, 10/01/18     2,118,358  
  3,877,000     Sotheby’sµ
7.750%, 06/15/15
    4,129,005  
  1,454,000     Speedway Motorsports, Inc.
8.750%, 06/01/16
    1,592,130  
  12,310,000     Vail Resorts, Inc.µ
6.750%, 02/15/14
    12,586,975  
  969,000  GBP   Warner Music Group Corp.
8.125%, 04/15/14
    1,459,517  
  2,743,000     Wynn Las Vegas, LLC*~
7.750%, 08/15/20
    2,989,870  
                 
              95,556,001  
                 
         
        Consumer Staples (3.1%)
  3,392,000     Chiquita Brands International, Inc.
8.875%, 12/01/15
    3,531,920  
        Constellation Brands, Inc.        
  1,939,000     7.250%, 09/01/16µ     2,142,595  
  1,939,000     7.250%, 05/15/17     2,135,324  
  1,105,000     Del Monte Foods Company
7.500%, 10/15/19
    1,218,262  
  2,423,000     NBTY, Inc.µ
7.125%, 10/01/15
    2,495,690  
  2,908,000     Reynolds American, Inc.µ
7.250%, 06/15/37
    3,036,406  
  9,693,000     Smithfield Foods, Inc.µ
7.750%, 05/15/13
    10,213,999  
                 
              24,774,196  
                 
         
        Energy (15.3%)
        Arch Coal, Inc.        
  5,535,000     7.250%, 10/01/20     6,088,500  
  727,000     8.750%, 08/01/16     819,693  
  3,191,000     Arch Western Finance, LLC
6.750%, 07/01/13
    3,238,865  
  2,084,000     ATP Oil & Gas Corp.*
11.875%, 05/01/15
    1,912,070  
        Berry Petroleum Company        
  5,118,000     8.250%, 11/01/16     5,425,080  
  1,939,000     10.250%, 06/01/14     2,246,816  
  3,877,000     Brigham Exploration Company*
8.750%, 10/01/18
    4,206,545  
  7,948,000     Bristow Group, Inc.µ
7.500%, 09/15/17
    8,285,790  
  1,939,000     Carrizo Oil & Gas, Inc.*†
8.625%, 10/15/18
    1,951,119  
  3,877,000     Complete Production Services, Inc.µ
8.000%, 12/15/16
    4,099,927  
  6,106,000     Comstock Resources, Inc.
8.375%, 10/15/17
    6,350,240  
  4,691,000     Concho Resources, Inc.
8.625%, 10/01/17
    5,101,462  
  4,846,000     EXCO Resources, Inc.
7.500%, 09/15/18
    4,797,540  
  5,893,000     Frontier Oil Corp.µ
8.500%, 09/15/16
    6,231,847  
  3,005,000     GulfMark Offshore, Inc.µ
7.750%, 07/15/14
    3,072,612  
  7,366,000     Helix Energy Solutions Group, Inc.µ*
9.500%, 01/15/16
    7,660,640  
  1,774,000     Holly Corp.
9.875%, 06/15/17
    1,951,400  
  2,840,000     Hornbeck Offshore Services, Inc.
8.000%, 09/01/17
    2,893,250  
        Mariner Energy, Inc.µ        
  4,846,000     11.750%, 06/30/16     6,118,075  
  1,939,000     8.000%, 05/15/17     2,152,290  

         
8
  CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   See accompanying Notes to Schedule of Investments


 

Schedule of Investments  October 31, 2010

                 
PRINCIPAL
       
AMOUNT       VALUE
  5,428,000     Petrohawk Energy Corp.µ
7.125%, 04/01/12
  $ 5,455,140  
        Petroplus Holdings, AGµ*        
  4,846,000     9.375%, 09/15/19     4,676,390  
  1,939,000     6.750%, 05/01/14     1,861,440  
  485,000     7.000%, 05/01/17     446,200  
  3,877,000     Pride International, Inc.µ
8.500%, 06/15/19
    4,725,094  
  3,877,000     SEACOR Holdings, Inc.
7.375%, 10/01/19
    4,148,049  
  6,300,000     Superior Energy Services, Inc.µ
6.875%, 06/01/14
    6,394,500  
        Swift Energy Company        
  5,234,000     8.875%, 01/15/20     5,678,890  
  2,423,000     7.125%, 06/01/17     2,459,345  
  2,309,000     Whiting Petroleum Corp.
6.500%, 10/01/18
    2,487,948  
                 
              122,936,757  
                 
         
        Financials (3.1%)
  5,428,000     Janus Capital Group, Inc.µ
6.950%, 06/15/17
    5,692,181  
        Leucadia National Corp.        
  7,512,000     8.125%, 09/15/15µ     8,235,030  
  1,193,000     7.125%, 03/15/17     1,233,264  
  4,362,000     Nuveen Investments, Inc.
10.500%, 11/15/15
    4,580,100  
        OMEGA Healthcare Investors, Inc.        
  3,053,000     7.500%, 02/15/20*     3,304,872  
  1,648,000     7.000%, 04/01/14µ     1,689,200  
                 
              24,734,647  
                 
         
        Health Care (4.5%)
        Bio-Rad Laboratories, Inc.        
  1,939,000     8.000%, 09/15/16     2,128,052  
  1,648,000     7.500%, 08/15/13µ     1,680,960  
  1,939,000     Community Health Systems, Inc.
8.875%, 07/15/15
    2,079,578  
  909,000     DaVita, Inc.
6.625%, 11/01/20
    937,406  
        HealthSouth Corp.        
  2,665,000     7.750%, 09/15/22     2,821,569  
  2,132,000     7.250%, 10/01/18     2,227,940  
        Mylan, Inc.*        
  3,150,000     7.875%, 07/15/20     3,528,000  
  2,733,000     7.625%, 07/15/17     3,019,965  
  4,362,000     Talecris Biotherapeutics Holdings Corp.
7.750%, 11/15/16
    4,907,250  
        Valeant Pharmaceuticals International*        
  6,009,000     7.000%, 10/01/20     6,324,472  
  1,018,000     6.750%, 10/01/17     1,065,083  
  4,846,000     Warner Chilcott Company, LLC*
7.750%, 09/15/18
    5,064,070  
                 
              35,784,345  
                 
         
        Industrials (9.1%)
        BE Aerospace, Inc.        
  4,362,000     8.500%, 07/01/18µ     4,896,345  
  327,000     6.875%, 10/01/20     349,073  
        Belden, Inc.        
  3,635,000     7.000%, 03/15/17µ     3,707,700  
  969,000     9.250%, 06/15/19     1,076,801  
  1,745,000     Clean Harbors, Inc.
7.625%, 08/15/16
    1,851,881  
  4,502,000     Deluxe Corp.µ
7.375%, 06/01/15
    4,704,590  
  2,287,000     Esterline Technologies Corp.*
7.000%, 08/01/20
    2,441,372  
  2,181,000     FTI Consulting, Inc.*
6.750%, 10/01/20
    2,287,324  
  2,908,000     Gardner Denver, Inc.µ
8.000%, 05/01/13
    2,980,700  
  727,000     GEO Group, Inc.
7.750%, 10/15/17
    796,974  
  3,835,000     GeoEye, Inc.
8.625%, 10/01/16
    4,036,337  
  1,551,000     H&E Equipment Services, Inc.µ
8.375%, 07/15/16
    1,574,265  
  2,423,000     Interline Brands, Inc.µ
8.125%, 06/15/14
    2,529,006  
        Oshkosh Corp.        
  2,908,000     8.500%, 03/01/20     3,235,150  
  1,939,000     8.250%, 03/01/17     2,128,053  
  7,512,000     Spirit AeroSystems Holdings, Inc.
7.500%, 10/01/17
    7,925,160  
  2,365,000     SPX Corp.µ
7.625%, 12/15/14
    2,636,975  
  6,785,000     Terex Corp.
7.375%, 01/15/14
    6,937,662  
  2,908,000     Trinity Industries, Inc.
6.500%, 03/15/14
    2,987,970  
        Triumph Group, Inc.        
  2,423,000     8.625%, 07/15/18     2,677,415  
  1,987,000     8.000%, 11/15/17~     2,061,513  
  5,331,000     Tutor Perini Corp.*
7.625%, 11/01/18
    5,437,620  
  3,368,000     WESCO Distribution, Inc.
7.500%, 10/15/17
    3,452,200  
                 
              72,712,086  
                 
         
        Information Technology (6.8%)
        Advanced Micro Devices, Inc.        
  5,816,000     7.750%, 08/01/20*     6,194,040  
  2,782,000     8.125%, 12/15/17     3,018,470  

         
See accompanying Notes to Schedule of Investments
  CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   9


 

Schedule of Investments  October 31, 2010

                 
PRINCIPAL
       
AMOUNT       VALUE
        Amkor Technology, Inc.        
  7,270,000     9.250%, 06/01/16   $ 7,833,425  
  2,908,000     7.375%, 05/01/18*     3,038,860  
  1,357,000     Anixter International, Inc.µ
5.950%, 03/01/15
    1,357,000  
  3,005,000     Equinix, Inc.
8.125%, 03/01/18
    3,200,325  
  485,000     Fidelity National Information Services, Inc.*
7.875%, 07/15/20
    532,288  
        Jabil Circuit, Inc.        
  5,331,000     8.250%, 03/15/18µ     6,277,252  
  969,000     7.750%, 07/15/16     1,121,618  
  3,518,000     Lender Processing Services, Inc.µ
8.125%, 07/01/16
    3,641,130  
  2,423,000     Lexmark International, Inc.µ
6.650%, 06/01/18
    2,712,059  
  3,392,000     Seagate Technology*
6.875%, 05/01/20
    3,476,800  
  1,454,000     SunGard Data Systems, Inc.~
9.125%, 08/15/13
    1,495,802  
  1,212,000     ViaSat, Inc.
8.875%, 09/15/16
    1,324,110  
  9,208,000     Xerox Corp.µ
8.000%, 02/01/27
    9,466,772  
                 
              54,689,951  
                 
         
        Materials (8.2%)
  2,665,000     Allegheny Ludlum Corp.
6.950%, 12/15/25
    2,747,612  
  843,000     Ashland, Inc.
9.125%, 06/01/17
    975,773  
  1,454,000     Ball Corp.
7.375%, 09/01/19
    1,628,480  
  1,737,000     Boise Cascade Holdings, LLC
7.125%, 10/15/14
    1,684,890  
  356,000     Clearwater Paper Corp.*
7.125%, 11/01/18
    373,800  
  6,213,000     Greif, Inc.
7.750%, 08/01/19
    6,803,235  
        Ineos Group Holdings, PLC*        
  4,653,000  EUR   7.875%, 02/15/16     5,731,300  
  969,000     8.500%, 02/15/16     886,635  
  4,846,000     Mosaic Companyµ*
7.625%, 12/01/16
    5,262,751  
        Nalco Holding Company        
  2,685,000     8.250%, 05/15/17     3,003,844  
  1,939,000  EUR   9.000%, 11/15/13     2,752,674  
  3,877,000     Neenah Paper, Inc.µ
7.375%, 11/15/14
    3,944,848  
  7,754,000     Sealed Air Corp.µ*
6.875%, 07/15/33
    6,860,041  
  3,548,000     Silgan Holdings, Inc.
7.250%, 08/15/16
    3,800,795  
        Steel Dynamics, Inc.        
  7,793,000     7.750%, 04/15/16     8,357,992  
  969,000     7.625%, 03/15/20*     1,044,098  
  2,423,000     Texas Industries, Inc.*
9.250%, 08/15/20
    2,562,323  
        Union Carbide Corp.µ        
  3,877,000     7.500%, 06/01/25     4,050,794  
  3,005,000     7.875%, 04/01/23     3,191,671  
                 
              65,663,556  
                 
         
        Telecommunication Services (4.8%)
  4,565,000     CenturyLink, Inc.µ
6.875%, 01/15/28
    4,497,945  
        Frontier Communications Corp.        
  5,913,000     9.000%, 08/15/31µ     6,622,560  
  2,423,000     8.250%, 04/15/17     2,774,335  
  202,000     MetroPCS Wireless, Inc.
7.875%, 09/01/18
    217,655  
  5,816,000     Qwest Communications International, Inc.µ
7.750%, 02/15/31
    6,077,720  
  9,693,000     Sprint Nextel Corp.µ
7.375%, 08/01/15
    9,777,814  
  3,877,000     Syniverse Technologies, Inc.µ
7.750%, 08/15/13
    3,964,232  
  4,362,000     Windstream Corp.*
7.750%, 10/15/20
    4,645,530  
                 
              38,577,791  
                 
         
        Utilities (0.4%)
  5,331,000     Energy Future Holdings Corp.
10.250%, 11/01/15
    3,331,875  
                 
        TOTAL CORPORATE BONDS
(Cost $519,546,194)
    538,761,205  
                 
CONVERTIBLE BONDS (24.5%)
         
        Consumer Discretionary (2.3%)
        Interpublic Group of Companies, Inc.        
  4,490,000     4.750%, 03/15/23     5,225,237  
  1,000,000     4.250%, 03/15/23µ     1,107,500  
  10,000,000     Liberty Media Corp.
(Time Warner, Inc.)µ§
3.125%, 03/30/23
    11,275,000  
  1,870,000     Liberty Media Corp.
(Viacom, CBS Corp. - Class B)µ§
3.250%, 03/15/31
    1,285,625  
                 
              18,893,362  
                 
         
        Energy (1.7%)
        Chesapeake Energy Corp.        
  8,500,000     2.250%, 12/15/38µ     6,513,125  
  5,000,000     2.750%, 11/15/35     4,793,750  
  2,000,000     SM Energy Companyµ
3.500%, 04/01/27
    2,142,500  
                 
              13,449,375  
                 

         
10
  CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   See accompanying Notes to Schedule of Investments


 

Schedule of Investments  October 31, 2010

                 
PRINCIPAL
       
AMOUNT       VALUE
        Financials (0.5%)
  1,184,000     Affiliated Managers Group, Inc.
3.950%, 08/15/38
  $ 1,249,120  
  2,850,000     Health Care REIT, Inc.
3.000%, 12/01/29
    3,199,125  
                 
              4,448,245  
                 
         
        Health Care (3.6%)
  188,000     Kinetic Concepts, Inc.*
3.250%, 04/15/15
    194,110  
  16,000,000     Life Technologies Corp.µ
3.250%, 06/15/25
    18,480,000  
  7,250,000     LifePoint Hospitals, Inc.µ
3.500%, 05/15/14
    7,240,937  
  3,000,000     Salix Pharmaceuticals, Ltd.
2.750%, 05/15/15
    3,363,750  
                 
              29,278,797  
                 
         
        Industrials (2.9%)
  2,150,000     Alliant Techsystems, Inc.
3.000%, 08/15/24
    2,488,625  
  10,500,000     L-3 Communications Holdings, Inc.µ
3.000%, 08/01/35
    10,605,000  
  10,500,000     Trinity Industries, Inc.µ
3.875%, 06/01/36
    9,830,625  
                 
              22,924,250  
                 
         
        Information Technology (9.5%)
  1,160,000     ADC Telecommunications, Inc.
3.500%, 07/15/15
    1,151,300  
  1,450,000  GBP   Autonomy Corp., PLC
3.250%, 03/04/15
    2,543,470  
  3,000,000     Blackboard, Inc.µ
3.250%, 07/01/27
    3,037,500  
  5,500,000     Euronet Worldwide, Inc.µ
3.500%, 10/15/25
    5,438,125  
        Intel Corp.        
  23,250,000     2.950%, 12/15/35µ     23,482,500  
  3,500,000     3.250%, 08/01/39     4,169,375  
  16,500,000     Linear Technology Corp.µ
3.000%, 05/01/27
    17,160,000  
  4,000,000     ON Semiconductor Corp.µ
2.625%, 12/15/26
    4,200,000  
  6,000,000     Rovi Corp.*
2.625%, 02/15/40
    7,552,500  
  6,250,000     Xilinx, Inc.*
2.625%, 06/15/17
    7,203,125  
                 
              75,937,895  
                 
         
        Materials (4.0%)
  4,300,000     Anglo American, PLC
4.000%, 05/07/14
    7,672,874  
  6,100,000     AngloGold Ashanti, Ltd.
3.500%, 05/22/14
    7,431,899  
  8,010,000     Newmont Mining Corp.µ
3.000%, 02/15/12
    11,153,925  
  2,000,000     Sino-Forest Corp.*
5.000%, 08/01/13
    2,440,000  
  2,620,000     Steel Dynamics, Inc.
5.125%, 06/15/14
    3,029,375  
                 
              31,728,073  
                 
        TOTAL CONVERTIBLE BONDS
(Cost $188,822,068)
    196,659,997  
                 
U.S. GOVERNMENT AND AGENCY SECURITIES (0.9%)
        United States Treasury Note~        
  3,683,000     0.875%, 02/28/11     3,692,064  
  3,199,000     0.875%, 04/30/11     3,210,497  
                 
        TOTAL U.S. GOVERNMENT AND AGENCY SECURITIES
(Cost $6,900,500)
    6,902,561  
                 
SOVEREIGN BONDS (1.5%)
        Federal Republic of Brazil        
  1,386,000  BRL   10.000%, 01/01/12     8,287,682  
  582,000  BRL   10.000%, 01/01/13     3,413,988  
                 
        TOTAL SOVEREIGN BONDS
(Cost $11,493,816)
    11,701,670  
                 
SYNTHETIC CONVERTIBLE SECURITIES (2.6%)
Corporate Bonds (2.1%)
         
        Consumer Discretionary (0.4%)
  108,000     Asbury Automotive Group, Inc.
7.625%, 03/15/17
    106,380  
  154,000     Cooper Tire & Rubber Company
8.000%, 12/15/19
    160,545  
  162,000     DISH Network Corp.µ
7.125%, 02/01/16
    172,530  
  36,000     GameStop Corp.
8.000%, 10/01/12
    37,305  
        General Motors Corp.**        
  277,000     7.200%, 01/15/11     97,642  
  46,000     7.125%, 07/15/13     16,330  
        Goodyear Tire & Rubber Company        
  77,000     8.250%, 08/15/20     82,390  
  42,000     7.000%, 03/15/28µ     40,740  
  177,000     Hanesbrands, Inc.µ‡
4.121%, 12/15/14
    177,442  
  123,000     Hasbro, Inc.µ
6.600%, 07/15/28
    126,822  
  35,000     Interpublic Group of Companies, Inc.µ
10.000%, 07/15/17
    41,650  
  180,000     Jarden Corp.
7.500%, 05/01/17
    192,375  
  85,000     Kellwood Company
7.625%, 10/15/17
    45,050  
  92,000     Liberty Media Corp.µ
8.250%, 02/01/30
    92,575  

         
See accompanying Notes to Schedule of Investments
  CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   11


 

Schedule of Investments  October 31, 2010

                 
PRINCIPAL
       
AMOUNT       VALUE
  92,000     Live Nation Entertainment, Inc.*
8.125%, 05/15/18
  $ 95,220  
  138,000     MGM Resorts International
8.375%, 02/01/11
    140,070  
  131,000     NetFlix, Inc.µ
8.500%, 11/15/17
    147,375  
        Royal Caribbean Cruises, Ltd.µ        
  154,000     7.500%, 10/15/27     155,155  
  61,000     7.250%, 06/15/16     66,795  
  31,000     7.000%, 06/15/13     33,713  
        Service Corp. Internationalµ        
  215,000     7.500%, 04/01/27     213,387  
  61,000     7.625%, 10/01/18     66,643  
  123,000     Sotheby’sµ
7.750%, 06/15/15
    130,995  
  46,000     Speedway Motorsports, Inc.
8.750%, 06/01/16
    50,370  
  390,000     Vail Resorts, Inc.µ
6.750%, 02/15/14
    398,775  
  31,000  GBP   Warner Music Group Corp.
8.125%, 04/15/14
    46,693  
  87,000     Wynn Las Vegas, LLC*~
7.750%, 08/15/20
    94,830  
                 
              3,029,797  
                 
         
        Consumer Staples (0.1%)
  108,000     Chiquita Brands International, Inc.
8.875%, 12/01/15
    112,455  
        Constellation Brands, Inc.        
  61,000     7.250%, 09/01/16µ     67,405  
  61,000     7.250%, 05/15/17     67,176  
  35,000     Del Monte Foods Company
7.500%, 10/15/19
    38,588  
  77,000     NBTY, Inc.µ
7.125%, 10/01/15
    79,310  
  92,000     Reynolds American, Inc.µ
7.250%, 06/15/37
    96,062  
  307,000     Smithfield Foods, Inc.µ
7.750%, 05/15/13
    323,501  
                 
              784,497  
                 
         
        Energy (0.5%)
        Arch Coal, Inc.        
  175,000     7.250%, 10/01/20     192,500  
  23,000     8.750%, 08/01/16     25,933  
  101,000     Arch Western Finance, LLC
6.750%, 07/01/13
    102,515  
  66,000     ATP Oil & Gas Corp.*
11.875%, 05/01/15
    60,555  
        Berry Petroleum Company        
  162,000     8.250%, 11/01/16     171,720  
  61,000     10.250%, 06/01/14     70,684  
  123,000     Brigham Exploration Company*
8.750%, 10/01/18
    133,455  
  252,000     Bristow Group, Inc.µ
7.500%, 09/15/17
    262,710  
  61,000     Carrizo Oil & Gas, Inc.*†
8.625%, 10/15/18
    61,381  
  123,000     Complete Production Services, Inc.µ
8.000%, 12/15/16
    130,072  
  194,000     Comstock Resources, Inc.
8.375%, 10/15/17
    201,760  
  149,000     Concho Resources, Inc.
8.625%, 10/01/17
    162,037  
  154,000     EXCO Resources, Inc.
7.500%, 09/15/18
    152,460  
  187,000     Frontier Oil Corp.µ
8.500%, 09/15/16
    197,752  
  95,000     GulfMark Offshore, Inc.µ
7.750%, 07/15/14
    97,138  
  234,000     Helix Energy Solutions Group, Inc.µ*
9.500%, 01/15/16
    243,360  
  56,000     Holly Corp.
9.875%, 06/15/17
    61,600  
  90,000     Hornbeck Offshore Services, Inc.
8.000%, 09/01/17
    91,688  
        Mariner Energy, Inc.µ        
  154,000     11.750%, 06/30/16     194,425  
  61,000     8.000%, 05/15/17     67,710  
  172,000     Petrohawk Energy Corp.µ
7.125%, 04/01/12
    172,860  
        Petroplus Holdings, AGµ*        
  154,000     9.375%, 09/15/19     148,610  
  61,000     6.750%, 05/01/14     58,560  
  15,000     7.000%, 05/01/17     13,800  
  123,000     Pride International, Inc.µ
8.500%, 06/15/19
    149,906  
  123,000     SEACOR Holdings, Inc.
7.375%, 10/01/19
    131,599  
  200,000     Superior Energy Services, Inc.µ
6.875%, 06/01/14
    203,000  
        Swift Energy Company        
  166,000     8.875%, 01/15/20     180,110  
  77,000     7.125%, 06/01/17     78,155  
  73,000     Whiting Petroleum Corp.
6.500%, 10/01/18
    78,658  
                 
              3,896,713  
                 
         
        Financials (0.1%)
  172,000     Janus Capital Group, Inc.µ
6.950%, 06/15/17
    180,371  
        Leucadia National Corp.        
  238,000     8.125%, 09/15/15µ     260,907  
  38,000     7.125%, 03/15/17     39,283  
  138,000     Nuveen Investments, Inc.
10.500%, 11/15/15
    144,900  
        OMEGA Healthcare Investors, Inc.        
  97,000     7.500%, 02/15/20*     105,003  

         
12
  CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   See accompanying Notes to Schedule of Investments


 

Schedule of Investments  October 31, 2010

                 
PRINCIPAL
       
AMOUNT       VALUE
  52,000     7.000%, 04/01/14µ   $ 53,300  
                 
              783,764  
                 
         
        Health Care (0.1%)
        Bio-Rad Laboratories, Inc.        
  61,000     8.000%, 09/15/16     66,947  
  52,000     7.500%, 08/15/13µ     53,040  
  61,000     Community Health Systems, Inc.
8.875%, 07/15/15
    65,423  
  29,000     DaVita, Inc.
6.625%, 11/01/20
    29,906  
        HealthSouth Corp.        
  85,000     7.750%, 09/15/22     89,994  
  68,000     7.250%, 10/01/18     71,060  
        Mylan, Inc.*        
  100,000     7.875%, 07/15/20     112,000  
  87,000     7.625%, 07/15/17     96,135  
  138,000     Talecris Biotherapeutics Holdings Corp.
7.750%, 11/15/16
    155,250  
        Valeant Pharmaceuticals International*        
  191,000     7.000%, 10/01/20     201,027  
  32,000     6.750%, 10/01/17     33,480  
  154,000     Warner Chilcott Company, LLC*
7.750%, 09/15/18
    160,930  
                 
              1,135,192  
                 
         
        Industrials (0.3%)
        BE Aerospace, Inc.        
  138,000     8.500%, 07/01/18µ     154,905  
  10,000     6.875%, 10/01/20     10,675  
        Belden, Inc.        
  115,000     7.000%, 03/15/17µ     117,300  
  31,000     9.250%, 06/15/19     34,449  
  55,000     Clean Harbors, Inc.
7.625%, 08/15/16
    58,369  
  143,000     Deluxe Corp.µ
7.375%, 06/01/15
    149,435  
  73,000     Esterline Technologies Corp.*
7.000%, 08/01/20
    77,927  
  69,000     FTI Consulting, Inc.*
6.750%, 10/01/20
    72,364  
  92,000     Gardner Denver, Inc.µ
8.000%, 05/01/13
    94,300  
  23,000     GEO Group, Inc.
7.750%, 10/15/17
    25,214  
  122,000     GeoEye, Inc.
8.625%, 10/01/16
    128,405  
  49,000     H&E Equipment Services, Inc.µ
8.375%, 07/15/16
    49,735  
  77,000     Interline Brands, Inc.µ
8.125%, 06/15/14
    80,369  
        Oshkosh Corp.        
  92,000     8.500%, 03/01/20     102,350  
  61,000     8.250%, 03/01/17     66,947  
  238,000     Spirit AeroSystems Holdings, Inc.
7.500%, 10/01/17
    251,090  
  75,000     SPX Corp.µ
7.625%, 12/15/14
    83,625  
  215,000     Terex Corp.
7.375%, 01/15/14
    219,837  
  92,000     Trinity Industries, Inc.
6.500%, 03/15/14
    94,530  
        Triumph Group, Inc.        
  77,000     8.625%, 07/15/18     85,085  
  63,000     8.000%, 11/15/17~     65,363  
  169,000     Tutor Perini Corp.*
7.625%, 11/01/18
    172,380  
  107,000     WESCO Distribution, Inc.
7.500%, 10/15/17
    109,675  
                 
              2,304,329  
                 
         
        Information Technology (0.2%)
        Advanced Micro Devices, Inc.        
  184,000     7.750%, 08/01/20*     195,960  
  88,000     8.125%, 12/15/17     95,480  
        Amkor Technology, Inc.        
  230,000     9.250%, 06/01/16     247,825  
  92,000     7.375%, 05/01/18*     96,140  
  43,000     Anixter International, Inc.µ
5.950%, 03/01/15
    43,000  
  95,000     Equinix, Inc.
8.125%, 03/01/18
    101,175  
  15,000     Fidelity National Information Services, Inc.*
7.875%, 07/15/20
    16,463  
        Jabil Circuit, Inc.        
  169,000     8.250%, 03/15/18µ     198,997  
  31,000     7.750%, 07/15/16     35,883  
  112,000     Lender Processing Services, Inc.µ
8.125%, 07/01/16
    115,920  
  77,000     Lexmark International, Inc.µ
6.650%, 06/01/18
    86,186  
  108,000     Seagate Technology*
6.875%, 05/01/20
    110,700  
  46,000     SunGard Data Systems, Inc.~
9.125%, 08/15/13
    47,322  
  38,000     ViaSat, Inc.
8.875%, 09/15/16
    41,515  
  292,000     Xerox Corp.µ
8.000%, 02/01/27
    300,206  
                 
              1,732,772  
                 
         
        Materials (0.3%)
  85,000     Allegheny Ludlum Corp.
6.950%, 12/15/25
    87,635  
  27,000     Ashland, Inc.
9.125%, 06/01/17
    31,253  

         
See accompanying Notes to Schedule of Investments
  CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   13


 

Schedule of Investments  October 31, 2010

                 
PRINCIPAL
       
AMOUNT       VALUE
  46,000     Ball Corp.
7.375%, 09/01/19
  $ 51,520  
  55,000     Boise Cascade Holdings, LLC
7.125%, 10/15/14
    53,350  
  11,000     Clearwater Paper Corp.*
7.125%, 11/01/18
    11,550  
  197,000     Greif, Inc.
7.750%, 08/01/19
    215,715  
        Ineos Group Holdings, PLC*        
  147,000  EUR   7.875%, 02/15/16     181,066  
  31,000     8.500%, 02/15/16     28,365  
  154,000     Mosaic Companyµ*
7.625%, 12/01/16
    167,244  
        Nalco Holding Company        
  85,000     8.250%, 05/15/17     95,094  
  61,000  EUR   9.000%, 11/15/13     86,598  
  123,000     Neenah Paper, Inc.µ
7.375%, 11/15/14
    125,152  
  246,000     Sealed Air Corp.µ*
6.875%, 07/15/33
    217,639  
  112,000     Silgan Holdings, Inc.
7.250%, 08/15/16
    119,980  
        Steel Dynamics, Inc.        
  247,000     7.750%, 04/15/16     264,907  
  31,000     7.625%, 03/15/20*     33,403  
  77,000     Texas Industries, Inc.*
9.250%, 08/15/20
    81,427  
        Union Carbide Corp.µ        
  123,000     7.500%, 06/01/25     128,514  
  95,000     7.875%, 04/01/23     100,901  
                 
              2,081,313  
                 
         
        Telecommunication Services (0.1%)
  145,000     CenturyLink, Inc.µ
6.875%, 01/15/28
    142,870  
        Frontier Communications Corp.        
  187,000     9.000%, 08/15/31µ     209,440  
  77,000     8.250%, 04/15/17     88,165  
  6,000     MetroPCS Wireless, Inc.
7.875%, 09/01/18
    6,465  
  184,000     Qwest Communications International, Inc.µ
7.750%, 02/15/31
    192,280  
  307,000     Sprint Nextel Corp.µ
7.375%, 08/01/15
    309,686  
  123,000     Syniverse Technologies, Inc.µ
7.750%, 08/15/13
    125,768  
  138,000     Windstream Corp.*
7.750%, 10/15/20
    146,970  
                 
              1,221,644  
                 
         
        Utilities (0.0%)
  169,000     Energy Future Holdings Corp.
10.250%, 11/01/15
    105,625  
                 
        TOTAL CORPORATE BONDS     17,075,646  
                 
U.S. Government and Agency Securities (0.0%)
        United States Treasury Note~        
  117,000     0.875%, 02/28/11     117,288  
  101,000     0.875%, 04/30/11     101,363  
                 
        TOTAL U.S. GOVERNMENT AND AGENCY SECURITIES     218,651  
                 
Sovereign Bonds (0.1%)
        Federal Republic of Brazil        
  44,000  BRL   10.000%, 01/01/12     263,101  
  18,000  BRL   10.000%, 01/01/13     105,587  
                 
        TOTAL SOVEREIGN BONDS     368,688  
                 
                 
                 
NUMBER OF
       
CONTRACTS       VALUE
Purchased Options (0.4%)#
         
        Consumer Discretionary (0.1%)
  140     Amazon.com, Inc.
Call, 01/21/12, Strike $130.00
    684,950  
                 
         
        Information Technology (0.3%)
  150     Apple, Inc.
Call, 01/19/13, Strike $290.00
    1,071,375  
  125     Google, Inc.
Call, 01/21/12, Strike $600.00
    1,107,500  
  85     MasterCard, Inc.
Call, 01/21/12, Strike $250.00
    254,363  
                 
              2,433,238  
                 
        TOTAL PURCHASED OPTIONS     3,118,188  
                 
        TOTAL SYNTHETIC
CONVERTIBLE SECURITIES
(Cost $20,067,274)
    20,781,173  
                 
                 
                 
NUMBER OF
       
SHARES       VALUE
CONVERTIBLE PREFERRED STOCKS (14.1%)
         
        Consumer Staples (2.7%)
  460,000     Archer-Daniels-Midland Companyµ 6.250%     19,881,200  
  22,000     Bunge, Ltd. 4.875%     1,974,500  
                 
              21,855,700  
                 
         
        Energy (1.3%)
  180,000     Apache Corp. 6.000%     10,563,750  
                 
         
        Financials (5.2%)
  350,000     Affiliated Managers Group, Inc. 5.150%     13,562,500  

         
14
  CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   See accompanying Notes to Schedule of Investments


 

Schedule of Investments  October 31, 2010

                 
NUMBER OF
       
SHARES       VALUE
  140,000     American International Group, Inc. 8.500%   $ 1,029,000  
  15,500     Bank of America Corp.µ
7.250%
    14,678,500  
  55,000     Reinsurance Group of America, Inc.µ 5.750%     3,590,950  
  9,100     Wells Fargo & Companyµ
7.500%
    9,100,000  
                 
              41,960,950  
                 
         
        Health Care (1.5%)
  9,800     Mylan, Inc.
6.500%
    11,658,178  
                 
         
        Materials (2.5%)
  212,800     Vale, SA
6.750%
    19,702,816  
                 
         
        Utilities (0.9%)
  145,000     NextEra Energy, Inc.
7.000%
    7,340,625  
                 
        TOTAL CONVERTIBLE
PREFERRED STOCKS
(Cost $116,664,400)
    113,082,019  
                 
                 
                 
NUMBER OF
       
UNITS       VALUE
STRUCTURED EQUITY-LINKED SECURITIES (4.9%) +*
         
        Energy (2.4%)
  68,000     BNP Paribas, SA (Devon Energy Corp.)
11.000%, 02/01/11
    4,534,240  
  113,000     BNP Paribas, SA (ENSCO, PLC)
11.000%, 11/22/10
    5,285,010  
  49,100     Deutsche Bank, AG (Apache Corp.)
12.000%, 12/21/10
    4,765,155  
  180,000     JPMorgan Chase & Company (Pride International, Inc.)
12.000%, 02/15/11
    5,061,600  
                 
              19,646,005  
                 
         
        Information Technology (1.3%)
  122,000     Barclays Capital, Inc.
(QUALCOMM, Inc.)
12.000%, 01/22/11
    4,981,260  
  131,700     Deutsche Bank, AG
(SanDisk Corp.)
12.000%, 01/24/11
    5,398,383  
                 
              10,379,643  
                 
         
        Materials (1.2%)
  110,000     Credit Suisse Group (Barrick Gold Corp.)
11.000%, 11/16/10
    4,931,300  
  107,500     Goldman Sachs Group, Inc. (Goldcorp, Inc.)
12.000%, 07/20/11
    4,654,750  
                 
              9,586,050  
                 
        TOTAL STRUCTURED
EQUITY-LINKED SECURITIES
(Cost $37,817,033)
    39,611,698  
                 
                 
                 
NUMBER OF
       
SHARES       VALUE
COMMON STOCKS (5.0%)
         
        Financials (0.2%)
  48,900     MetLife, Inc.     1,972,137  
                 
         
        Health Care (1.6%)
  354,765     Merck & Company, Inc.µ     12,870,874  
                 
         
        Industrials (0.8%)
  175,608     Avery Dennison Corp.µ     6,383,351  
                 
         
        Materials (2.4%)
  198,882     Freeport-McMoRan Copper & Gold, Inc.µ     18,830,148  
                 
        TOTAL COMMON STOCKS
(Cost $42,713,641)
    40,056,510  
                 
SHORT TERM INVESTMENT (2.8%)
  22,056,035     Fidelity Prime Money Market Fund - Institutional Class
(Cost $22,056,035)
    22,056,035  
                 
TOTAL INVESTMENTS (123.5%)
(Cost $966,080,961)
    989,612,868  
         
         
LIABILITIES, LESS OTHER ASSETS (-23.5%)
    (188,258,504 )
         
         
NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS (100.0%)
  $ 801,354,364  
         
 
NOTES TO SCHEDULE OF INVESTMENTS
 
µ Security, or portion of security, is held in a segregated account as collateral for note payable aggregating a total value of $465,475,632. $174,308,659 of the collateral has been re-registered by the counterparty.
 
Variable rate or step bond security. The rate shown is the rate in effect at October 31, 2010.
 
* Securities issued and sold pursuant to a Rule 144A transaction are excepted from the registration requirement of the Securities Act of 1933, as amended. These securities may only be sold to qualified institutional buyers (“QIBs”), such as the fund. Any resale of these securities must generally be effected through a sale that is registered under the Act or otherwise exempted from such registration requirements. At October 31, 2010, the value of 144A securities that could not be exchanged to the registered form is $95,402,531 or 11.9% of net assets applicable to common shareholders.

         
See accompanying Notes to Financial Statements   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   15


 

Schedule of Investments  October 31, 2010

 
** General Motors filed for bankruptcy on June 1, 2009 and the bankruptcy plan transferred the assets and liabilities of the company into one of four trusts. The General Unsecured Creditors Trust will resolve the outstanding claims and distribute common stock and warrants of the new General Motors in lieu of cash proceeds.
 
~ Security, or portion of security, is segregated as collateral (or potential collateral for future transactions) for written options and swaps. The aggregate value of such securities aggregate a total value of $12,144,860.
 
Security or a portion of the security purchased on a delayed delivery or when-issued basis.
 
§ Securities exchangeable or convertible into securities of one or more entities that are different than the issuer. Each entity is identified in the parenthetical.
 
# Non-income producing security.
 
+ Structured equity-linked securities are designed to simulate the characteristics of the equity security in the parenthetical.
 
FOREIGN CURRENCY ABBREVIATIONS
     
BRL   Brazilian Real
EUR   European Monetary Unit
GBP   British Pound Sterling
 
Note: Value for securities denominated in foreign currencies is shown in U.S. dollars. The principal amount for such securities is shown in the respective foreign currency. The date shown on options represents the expiration date of the option contract. The option contract may be exercised at any date on or before the date shown.
 
 
INTEREST RATE SWAPS
 
                                 
                    UNREALIZED
    FIXED RATE
  FLOATING RATE
  TERMINATION
  NOTIONAL
  APPRECIATION/
COUNTERPARTY   (FUND PAYS)   (FUND RECEIVES)   DATE   AMOUNT   (DEPRECIATION)
BNP Paribas, SA     2.4300%  quarterly   3 month Libor   04/14/14   $ 80,000,000     $ (4,454,339 )
BNP Paribas, SA     1.8650%  quarterly   3 month Libor   04/14/12     55,000,000       (1,225,610 )
BNP Paribas, SA     1.8525%  quarterly   3 month Libor   09/14/12     38,700,000       (1,093,376 )
                                 
                            $ (6,773,325 )
                                 

         
16   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   See accompanying Notes to Financial Statements


 

Statement of Assets and Liabilities  October 31, 2010

         
ASSETS
       
Investments in securities, at value (cost $966,080,961)
  $ 989,612,868  
Receivables:
       
Accrued interest and dividends
    13,777,569  
Investments sold
    5,003,550  
Fund shares sold
    1,280,575  
Prepaid expenses
    220,866  
Other assets
    137,311  
         
Total assets
    1,010,032,739  
         
LIABILITIES
       
Due to custodian bank
    2,411,077  
Unrealized depreciation on interest rate swaps
    6,773,325  
Payables:
       
Note payable
    193,000,000  
Investments purchased
    5,304,913  
Affiliates:
       
Investment advisory fees
    665,734  
Deferred compensation to trustees
    137,311  
Financial accounting fees
    9,500  
Trustees’ fees and officer compensation
    523  
Other accounts payable and accrued liabilities
    375,992  
         
Total liabilities
    208,678,375  
         
NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS
  $ 801,354,364  
         
COMPOSITION OF NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS
       
Common stock, no par value, unlimited shares authorized 62,431,622 shares issued and outstanding
  $ 848,032,596  
Undistributed net investment income (loss)
    (18,427,898 )
Accumulated net realized gain (loss) on investments, foreign currency transactions, written options and interest rate swaps
    (45,022,173 )
Unrealized appreciation (depreciation) of investments, foreign currency translations and interest rate swaps
    16,771,839  
         
NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS
  $ 801,354,364  
         
Net asset value per common shares based upon 62,431,622 shares issued and outstanding
  $ 12.84  
         

         
See accompanying Notes to Financial Statements   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   17


 

Statement of Operations  Year Ended October 31, 2010

         
INVESTMENT INCOME
       
Interest
  $ 50,561,060  
Dividends
    14,109,152  
Securities lending income
    44,072  
Dividend taxes withheld
    (6,235 )
         
Total investment income
    64,708,049  
         
         
EXPENSES
       
Investment advisory fees
    7,201,605  
Interest expense and related fees
    3,441,153  
Deferred debt structuring fee
    460,273  
Legal fees
    279,973  
Printing and mailing fees
    211,470  
Financial accounting fees
    102,905  
Accounting fees
    71,134  
Registration fees
    65,737  
Trustees’ fees and officer compensation
    56,671  
Audit fees
    56,381  
Custodian fees
    42,972  
Transfer agent fees
    35,438  
Other
    39,983  
         
Total expenses
    12,065,695  
Less expense reductions
    (233,996 )
         
Net expenses
    11,831,699  
         
NET INVESTMENT INCOME (LOSS)
    52,876,350  
         
         
REALIZED AND UNREALIZED GAIN (LOSS)
       
Net realized gain (loss) from:
       
Investments, excluding purchased options
    7,591,530  
Purchased options
    (2,056,138 )
Foreign currency transactions
    (468 )
Written options
    (1,911,861 )
Interest rate swaps
    (3,138,743 )
Change in net unrealized appreciation/(depreciation) on:
       
Investments, excluding purchased options
    74,340,383  
Purchased options
    2,963,275  
Foreign currency translations
    (17,714 )
Written options
    (47,063 )
Interest rate swaps
    (5,986,924 )
         
NET GAIN (LOSS)
    71,736,277  
         
NET INCREASE (DECREASE) IN NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS RESULTING FROM OPERATIONS
  $ 124,612,627  
         

         
18   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   See accompanying Notes to Financial Statements


 

Statements of Changes in Net Assets

                 
    YEAR ENDED OCTOBER 31,
    2010   2009
OPERATIONS
               
Net investment income (loss)
  $ 52,876,350     $ 44,142,606  
Net realized gain (loss)
    484,320       (46,828,301 )
Change in unrealized appreciation/(depreciation)
    71,251,957       252,810,542  
Distributions to preferred shareholders from:
               
Net investment income
          (494,540 )
                 
Net increase (decrease) in net assets applicable to common shareholders resulting from operations
    124,612,627       249,630,307  
                 
                 
DISTRIBUTIONS TO COMMON SHAREHOLDERS FROM
               
Net investment income
    (57,534,444 )     (49,657,681 )
Net realized gains
          (917,159 )
Return of capital
    (8,429,372 )     (9,470,798 )
                 
Net decrease in net assets from distributions to common shareholders
    (65,963,816 )     (60,045,638 )
                 
                 
CAPITAL STOCK TRANSACTIONS
               
Proceeds from common shares sold
    81,812,245       45,759,544  
Offering costs on common shares
    (115,957 )     (62,909 )
Reinvestment of distributions resulting in the issuance of common stock
    9,302,173       7,390,948  
                 
Net increase (decrease) in net assets from capital stock transactions
    90,998,461       53,087,583  
                 
TOTAL INCREASE (DECREASE) IN NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS
    149,647,272       242,672,252  
                 
                 
NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS
               
Beginning of year
  $ 651,707,092     $ 409,034,840  
                 
End of year
    801,354,364       651,707,092  
 
 
Undistributed net investment income (loss)
  $ (18,427,898 )   $ (13,059,275 )

         
See accompanying Notes to Financial Statements   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   19


 

Statement of Cash Flows  Year Ended October 31, 2010

         
CASH FLOWS FROM OPERATING ACTIVITIES:
       
Net increase/(decrease) in net assets from operations
  $ 124,612,627  
Adjustments to reconcile net increase/(decrease) in net assets from operations to net cash used for operating activities:
       
Purchase of investment securities
    (518,495,347 )
Net proceeds from disposition of short term investments
    (2,686,406 )
Proceeds paid on closing written options
    (4,150,984 )
Proceeds from disposition of investment securities
    451,186,735  
Amortization and accretion of fixed-income securities
    (2,394,780 )
Net realized gains/losses from investments, excluding purchased options
    (7,591,530 )
Net realized gains/losses from purchased options
    2,056,138  
Net realized gains/losses from written options
    1,911,861  
Change in unrealized appreciation or depreciation on investments, excluding purchased options
    (74,340,383 )
Change in unrealized appreciation or depreciation on purchased options
    (2,963,275 )
Change in unrealized appreciation or depreciation on written options
    47,063  
Change in unrealized appreciation or depreciation on interest rate swaps
    5,986,924  
Net change in assets and liabilities:
       
(Increase)/decrease in assets:
       
Accrued interest and dividends receivable
    455,615  
Prepaid expenses
    (206,365 )
Other assets
    (31,685 )
Increase/(decrease) in liabilities:
       
Payables to affiliates
    155,804  
Other accounts payable and accrued liabilities
    (25,191 )
         
Net cash provided by/(used in) operating activities
  $ (26,473,179 )
         
         
CASH FLOWS FROM FINANCING ACTIVITIES:
       
Proceeds from common shares sold
    80,531,670  
Offering costs related to common shares sold
    (115,957 )
Distributions to common shareholders
    (56,661,643 )
Due to custodian bank
    2,411,077  
         
Net cash provided by/(used in) financing activities
  $ 26,165,147  
         
Net increase/(decrease) in cash
  $ (308,032 )
         
Cash at beginning of year
  $ 308,032  
         
Cash at end of year
  $ 0  
         
Supplemental disclosure
       
Cash paid for interest
  $ 3,432,003  
         
Non-cash financing activities not included herein consists of reinvestment of dividends and distributions of:
  $ 9,302,173  

         
20   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   See accompanying Notes to Financial Statements


 

Notes to Financial Statements

 
Note 1 – Organization and Significant Accounting Policies
Organization. Calamos Convertible Opportunities and Income Fund (the “Fund”) was organized as a Delaware statutory trust on April 17, 2002 and is registered under the Investment Company Act of 1940 (the “1940 Act”) as a diversified, closed-end management investment company. The Fund commenced operations on June 26, 2002. The Fund’s investment objective is to provide total return through a combination of capital appreciation and current income. Under normal circumstances, the Fund will invest at least 80% of its managed assets in a diversified portfolio of convertibles and non-convertible income securities. “Managed assets” means the Fund’s total assets (including any assets attributable to any leverage that may be outstanding) minus total liabilities (other than debt representing financial leverage).
 
Fund Valuation. The valuation of the Fund’s securities is in accordance with policies and procedures adopted by and under the ultimate supervision of the board of trustees.
 
Fund securities that are traded on U.S. securities exchanges, except option securities, are valued at the last current reported sales price at the time a Fund determines its net asset value (“NAV”). Securities traded in the over-the-counter market and quoted on The NASDAQ Stock Market are valued at the NASDAQ Official Closing Price, as determined by NASDAQ, or lacking a NASDAQ Official Closing Price, the last current reported sale price on NASDAQ at the time the Fund determines its NAV.
 
When a last sale or closing price is not available, equity securities, other than option securities, that are traded on a U.S. securities exchange and other equity securities traded in the over-the-counter market are valued at the mean between the most recent bid and asked quotations in accordance with guidelines adopted by the board of trustees. Each option security traded on a U.S. securities exchange is valued at the mid-point of the consolidated bid/ask quote for the option security, also in accordance with guidelines adopted by the board of trustees. Each over-the-counter option that is not traded through the Options Clearing Corporation is valued based on a quotation provided by the counterparty to such option under the ultimate supervision of the board of trustees.
 
Fixed income securities, certain convertible preferred securities, and non-exchange traded derivatives are normally valued by independent pricing services or by dealers or brokers who make markets in such securities. Valuations of such fixed income securities, certain convertible preferred securities, and non-exchange traded derivatives consider yield or price of equivalent securities of comparable quality, coupon rate, maturity, type of issue, trading characteristics and other market data and do not rely exclusively upon exchange or over-the-counter prices.
 
Trading on European and Far Eastern exchanges and over-the-counter markets is typically completed at various times before the close of business on each day on which the New York Stock Exchange (“NYSE”) is open. Each security trading on these exchanges or over-the-counter markets may be valued utilizing a systematic fair valuation model provided by an independent pricing service approved by the board of trustees. The valuation of each security that meets certain criteria in relation to the valuation model is systematically adjusted to reflect the impact of movement in the U.S. market after the foreign markets close. Securities that do not meet the criteria, or that are principally traded in other foreign markets, are valued as of the last reported sale price at the time the Fund determines its NAV, or when reliable market prices or quotations are not readily available, at the mean between the most recent bid and asked quotations as of the close of the appropriate exchange or other designated time. Trading of foreign securities may not take place on every NYSE business day. In addition, trading may take place in various foreign markets on Saturdays or on other days when the NYSE is not open and on which the Fund’s NAV is not calculated.
 
If the pricing committee determines that the valuation of a security in accordance with the methods described above is not reflective of a fair value for such security, the security is valued at a fair value by the pricing committee, under the ultimate supervision of the board of trustees, following the guidelines and/or procedures adopted by the board of trustees.
 
The Fund also may use fair value pricing, pursuant to guidelines adopted by the board of trustees and under the ultimate supervision of the board of trustees, if trading in the security is halted or if the value of a security it holds is materially affected by events occurring before the Fund’s pricing time but after the close of the primary market or exchange on which the security is listed. Those procedures may utilize valuations furnished by pricing services approved by the board of trustees, which may be based on market transactions for comparable securities and various relationships between securities that are generally recognized by institutional traders, a computerized matrix system, or appraisals derived from information concerning the securities or similar securities received from recognized dealers in those securities.

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   21


 

Notes to Financial Statements

 
When fair value pricing of securities is employed, the prices of securities used by a Fund to calculate its NAV may differ from market quotations or official closing prices. In light of the judgment involved in fair valuations, there can be no assurance that a fair value assigned to a particular security is accurate.
 
Investment Transactions. Investment transactions are recorded on a trade date basis. Net realized gains and losses from investment transactions are reported on an identified cost basis. Interest income is recognized using the accrual method and includes accretion of original issue and market discount and amortization of premium. Dividend income is recognized on the ex-dividend date, except that certain dividends from foreign securities are recorded as soon as the information becomes available after the ex-dividend date.
 
Foreign Currency Translation. Values of investments and other assets and liabilities denominated in foreign currencies are translated into U.S. dollars using a rate quoted by a major bank or dealer in the particular currency market, as reported by a recognized quotation dissemination service.
 
The Fund does not isolate that portion of the results of operations resulting from changes in foreign exchange rates on investments from the fluctuations arising from changes in market prices of securities held. Such fluctuations are included with the net realized and unrealized gain or loss from investments.
 
Reported net realized foreign currency gains or losses arise from disposition of foreign currency, the difference in the foreign exchange rates between the trade and settlement dates on securities transactions, and the difference between the amounts of dividends, interest and foreign withholding taxes recorded on the ex-date or accrual date and the U.S. dollar equivalent of the amounts actually received or paid. Net unrealized foreign exchange gains and losses arise from changes (due to the changes in the exchange rate) in the value of foreign currency and other assets and liabilities denominated in foreign currencies held at period end.
 
Allocation of Expenses Among Funds. Expenses directly attributable to the Fund are charged to the Fund; certain other common expenses of Calamos Advisors Trust, Calamos Investment Trust, Calamos Convertible Opportunities and Income Fund, Calamos Convertible and High Income Fund, Calamos Strategic Total Return Fund, Calamos Global Total Return Fund and Calamos Global Dynamic Income Fund are allocated proportionately among each fund to which the expenses relate in relation to the net assets of each fund or on another reasonable basis.
 
Use of Estimates. The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results may differ from those estimates.
 
Income Taxes. No provision has been made for U.S. income taxes because the Fund’s policy is to continue to qualify as a regulated investment company under the Internal Revenue Code of 1986, as amended, and distribute to shareholders substantially all of its taxable income and net realized gains.
 
Dividends and distributions paid to shareholders are recorded on the ex-dividend date. The amount of dividends and distributions from net investment income and net realized capital gains is determined in accordance with federal income tax regulations, which may differ from U.S. generally accepted accounting principles. To the extent these “book/tax” differences are permanent in nature, such amounts are reclassified within the capital accounts based on their federal tax-basis treatment. These differences are primarily due to differing treatments for foreign currency transactions, contingent payment debt instruments and methods of amortizing and accreting on fixed income securities. The financial statements are not adjusted for temporary differences.
 
The Fund recognized no liability for uncertain tax positions. A reconciliation is not provided as the beginning and ending amounts of unrecognized benefits are zero, as there are no interim additions, reductions or settlements. Tax years 2006 — 2009 remain subject to examination by the U.S. and the State of Illinois tax jurisdictions.
 
Indemnifications. Under the Fund’s organizational documents, the Fund is obligated to indemnify its officers and trustees against certain liabilities incurred by them by reason of having been an officer or trustee of the Fund. In addition, in the normal course of business, the Fund may enter into contracts that provide general indemnifications to other parties. The Fund’s maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Fund that have not yet occurred. Currently, the Fund’s management expects the risk of material loss in connection to a potential claim to be remote.

         
22   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

Notes to Financial Statements

 
Note 2 – Investment Adviser and Transactions with Affiliates or Certain Other Parties
Pursuant to an investment advisory agreement with Calamos Advisors LLC (“Calamos Advisors”), the Fund pays an annual fee, payable monthly, equal to 0.80% based on the average weekly managed assets. “Managed assets” means a fund’s total assets (including any assets attributable to any leverage that may be outstanding) minus total liabilities (other than debt representing financial leverage). Calamos Advisors has contractually agreed to waive a portion of its management fee at the annual rate of 0.04% of the average weekly managed assets of the Fund through June 30, 2010. For the year ended October 31, 2010, the total advisory fee waived pursuant to such agreement was $233,996 and is included in the Statement of Operations under the caption “Less expense reductions”.
 
Pursuant to a financial accounting services agreement, during the year the Fund paid Calamos Advisors a fee for financial accounting services payable monthly at the annual rate of 0.0175% on the first $1 billion of combined assets, 0.0150% on the next $1 billion of combined assets and 0.0110% on combined assets above $2 billion (for purposes of this calculation “combined assets” means the sum of the total average daily net assets of Calamos Investment Trust, Calamos Advisors Trust, and the total average weekly managed assets of Calamos Convertible and High Income Fund, Calamos Strategic Total Return Fund, Calamos Convertible Opportunities and Income Fund, Calamos Global Total Return Fund and Calamos Global Dynamic Income Fund). Financial accounting services include, but are not limited to, the following: managing expenses and expense payment processing; monitoring the calculation of expense accrual amounts; calculating, tracking and reporting tax adjustments on all assets; and monitoring trustee deferred compensation plan accruals and valuations. The Fund pays its pro rata share of the financial accounting services fee payable to Calamos Advisors based on its relative portion of combined assets used in calculating the fee.
 
The Fund reimburses Calamos Advisors for a portion of compensation paid to the Fund’s Chief Compliance Officer. This compensation is reported as part of “Trustees’ fees and officer compensation” expense on the Statement of Operations.
 
A trustee and certain officers of the Fund are also officers and directors of Calamos Advisors. Such trustee and officers serve without direct compensation from the Fund.
 
The Fund has adopted a deferred compensation plan (the “Plan”). Under the Plan, a trustee who is not an “interested person” (as defined in the 1940 Act) and has elected to participate in the Plan (a “participating trustee”) may defer receipt of all or a portion of his compensation from the Fund. The deferred compensation payable to the participating trustee is credited to the trustee’s deferral account as of the business day such compensation would have been paid to the participating trustee. The value of amounts deferred for a participating trustee is determined by reference to the change in value of Class I shares of one or more funds of Calamos Investment Trust designated by the participant. The value of the account increases with contributions to the account or with increases in the value of the measuring shares, and the value of the account decreases with withdrawals from the account or with declines in the value of the measuring shares. Deferred compensation of $137,311 is included in “Other assets” on the Statement of Assets and Liabilities at October 31, 2010. The Fund’s obligation to make payments under the Plan is a general obligation of the Fund and is included in “Payable for deferred compensation to trustees” on the Statement of Assets and Liabilities at October 31, 2010.
 
Note 3 – Investments
The cost of purchases and proceeds from sale of long-term investments, for the year ended October 31, 2010 were as follows:
 
         
Cost of purchases   $ 362,507,763  
Proceeds from sales     312,567,607  
 
The following information is presented on a federal income tax basis as of October 31, 2010. Differences between the cost basis under U.S. generally accepted accounting principles and federal income tax purposes are primarily due to temporary differences.
 
The cost basis of investments for federal income tax purposes at October 31, 2010 was as follows:
 
         
Cost basis of Investments   $ 982,341,407  
         
Gross unrealized appreciation     54,073,525  
Gross unrealized depreciation     (46,802,064 )
         
Net unrealized appreciation (depreciation)   $ 7,271,461  
         

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   23


 

Notes to Financial Statements

 
Note 4 – Income Taxes
For the year ended October 31, 2010, the Fund recorded the following permanent reclassifications to reflect tax character. The results of operations and net assets were not affected by these reclassifications.
 
         
Paid-in capital   $ (8,112,739)  
Undistributed net investment income/(loss)     7,718,843  
Accumulated net realized gain/(loss) on investments     393,896  
 
The Fund intends to make monthly distributions from its income available for distribution, which consists of the Fund’s dividends and interest income after payment of Fund expenses, and net realized gains on stock investments. At least annually, the Fund intends to distribute all or substantially all of its net realized capital gains, if any. Distributions are recorded on the ex-dividend date. The Fund distinguishes between distributions on a tax basis and a financial reporting basis. Accounting principles generally accepted in the United States of America require that only distributions in excess of tax basis earnings and profits be reported in the financial statements as a return of capital. Permanent differences between book and tax accounting relating to distributions are reclassified to paid-in-capital. For tax purposes, distributions from short-term capital gains are considered to be from ordinary income. Distributions in any year may include a return of capital component.
 
Distributions were characterized for federal income tax purposes as follows:
 
                 
    YEAR ENDED
  YEAR ENDED
    OCTOBER 31, 2010   OCTOBER 31, 2009
Distributions paid from:                
Ordinary income   $ 57,534,444     $ 50,253,702  
Long-term capital gains           917,159  
Return of capital     8,429,372       9,470,798  
 
As of October 31, 2010, the components of accumulated earnings/ (loss) on a tax basis were as follows:
 
         
Undistributed ordinary income   $  
Undistributed capital gains      
         
Total undistributed earnings      
Accumulated capital and other losses     (47,064,354)  
Net unrealized gains/(losses)     511,393  
         
Total accumulated earnings/(losses)     (46,552,961)  
Other     (125,271)  
Paid-in capital     848,032,596  
         
Net assets applicable to common shareholders   $ 801,354,364  
 
As of October 31, 2010, the Fund had capital loss carryforwards which, if not used, will expire as follows:
 
         
         
2017   $ (45,276,397)  
2018     (1,787,957)  

         
24   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

Notes to Financial Statements

 
Note 5 – Common Shares
There are unlimited common shares of beneficial interest authorized and 62,431,622 shares outstanding at October 31, 2010. Calamos Advisors owned 12,813 of the outstanding shares at October 31, 2010. Transactions in common shares were as follows:
 
                 
    YEAR ENDED
  YEAR ENDED
    OCTOBER 31, 2010   OCTOBER 31, 2009
Beginning shares     55,104,427       49,513,661  
Shares sold     6,567,190       4,823,462  
Shares issued through reinvestment of distributions     760,005       767,304  
                 
Ending shares     62,431,622       55,104,427  
                 
 
Notice is hereby given in accordance with Section 23(c) of the Investment Company Act of 1940 that the Fund may from time to time purchase its shares of common stock in the open market.
 
The Fund also may offer and sell common shares from time to time at an offering price equal to or in excess of the net asset value per share of the Fund’s common shares at the time such common shares are initially sold. Transactions for the current fiscal year had net proceeds received in excess of net asset value of $978,987.
 
Note 6 – Derivative Instruments
Foreign Currency Risk. The Fund may engage in portfolio hedging with respect to changes in currency exchange rates by entering into foreign currency contracts to purchase or sell currencies. A forward foreign currency contract is a commitment to purchase or sell a foreign currency at a future date at a negotiated forward rate. Risks associated with such contracts include, among other things, movement in the value of the foreign currency relative to the U.S. dollar and the ability of the counterparty to perform. The net unrealized gain, if any, represents the credit risk to the Fund on a forward foreign currency contract. The contracts are valued daily at forward foreign exchange rates and an unrealized gain or loss is recorded. The Fund realizes a gain or loss when a position is closed or upon settlement of the contracts. There were no open forward currency contracts at October 31, 2010.
 
Equity Risk. The Fund engages in option transactions and in doing so achieves the similar objectives to what it would achieve through the sale or purchase of individual securities. A call option, upon payment of a premium, gives the purchaser of the option the right to buy, and the seller of the option the obligation to sell, the underlying security, index or other instrument at the exercise price. A put option gives the purchaser of the option, upon payment of a premium, the right to sell, and the seller the obligation to buy, the underlying security, index, or other instrument at the exercise price.
 
To seek to offset some of the risk of a potential decline in value of certain long positions, the Fund may also purchase put options on individual securities, broad-based securities indexes or certain exchange traded funds (“ETFs”). The Fund may also seek to generate income from option premiums by writing (selling) options on a portion of the equity securities (including securities that are convertible into equity securities) in the Fund’s portfolio, on broad-based securities indexes, or certain ETFs.
 
When a Fund purchases an option, it pays a premium and an amount equal to that premium is recorded as an asset. When a Fund writes an option, it receives a premium and an amount equal to that premium is recorded as a liability. The asset or liability is adjusted daily to reflect the current market value of the option. If an option expires unexercised, the Fund realizes a gain or loss to the extent of the premium received or paid. If an option is exercised, the premium received or paid is recorded as an adjustment to the proceeds from the sale or the cost basis of the purchase. The difference between the premium and the amount received or paid on a closing purchase or sale transaction is also treated as a realized gain or loss. The cost of securities acquired through the exercise of call options is increased by premiums paid. The proceeds from securities sold through the exercise of put options are decreased by the premiums paid. Gain or loss on written options and purchased options is presented separately as net realized gain or loss on written options and net realized gain or loss on purchased options, respectively.

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   25


 

Notes to Financial Statements

 
As of October 31, 2010, the Fund had outstanding purchased options and/or written options as listed on the Schedule of Investments. For the year ended October 31, 2010, the Fund had the following transactions in options written:
 
                 
    NUMBER OF
  PREMIUMS
    CONTRACTS   RECEIVED
Options outstanding at October 31, 2009     6,510     $ 2,239,123  
Options written            
Options closed     (6,510 )     (2,239,123 )
Options exercised            
Options expired            
                 
Options outstanding at October 31, 2010         $  
 
Interest Rate Risk. The Fund engages in interest rate swaps primarily to hedge the interest rate risk on the fund’s borrowings (see Note 7 — Borrowings). An interest rate swap is a contract that involves the exchange of one type of interest rate for another type of interest rate. If interest rates rise, resulting in a diminution in the value of the Fund’s portfolio, the Fund would receive payments under the swap that would offset, in whole or in part, such diminution in value; if interest rates fall, the Fund would likely lose money on the swap transaction. Unrealized gains are reported as an asset, and unrealized losses are reported as a liability on the Statement of Assets and Liabilities. The change in value of swaps, including accruals of periodic amounts of interest to be paid or received on swaps, is reported as change in net unrealized appreciation/depreciation on interest rate swaps in the Statement of Operations. A realized gain or loss is recorded in net realized gain (loss) from interest rate swaps in the Statement of Operations upon payment or receipt of a periodic payment or termination of the swap agreements. Swap agreements are stated at fair value. Notional principal amounts are used to express the extent of involvement in these transactions, but the amounts potentially subject to credit risk are much smaller. In connection with these contracts, securities may be identified as collateral in accordance with the terms of the respective swap contracts in the event of default or bankruptcy of the Fund.
 
Premiums paid to or by a Fund are accrued daily and included in realized gain (loss) when paid on swaps in the accompanying Statement of Operations. The contracts are marked-to-market daily based upon third party vendor valuations and changes in value are recorded as unrealized appreciation (depreciation). Gains or losses are realized upon early termination of the contract. Risks may exceed amounts recognized in the Statement of Assets and Liabilities. These risks include changes in the returns of the underlying instruments, failure of the counterparties to perform under the contracts’ terms, counterparty’s creditworthiness, and the possible lack of liquidity with respect to the contracts.
 
As of October 31, 2010, the Fund had outstanding interest rate swap agreements as listed on the Schedule of Investments.
 
Below are the types of derivatives in the Fund by gross value as of October 31, 2010:
 
                         
    ASSETS       LIABILITIES    
    STATEMENT OF ASSETS &
      STATEMENT OF ASSETS &
   
    LIABILITIES LOCATION   VALUE   LIABILITIES LOCATION   VALUE
Derivative Type:                        
Equity-Purchased options
  Investments in securities   $ 3,118,188              
Interest Rate Swaps
  Unrealized appreciation           Unrealized depreciation        
    on swaps         on swaps   $ 6,773,325  
                         
 
Volume of Derivative Activity for the Twelve Months Ended October 31, 2010*
         
         
Equity:        
         
Purchased options
    640  
 
* Activity during the period is measured by opened number of contracts for options and opened notional amount for swap contracts.
 
Note 7 – Borrowings
The Fund, with the approval of its board of trustees, including its independent trustees, has entered into a financing package that includes a Committed Facility Agreement (the “Agreement”) with BNP Paribas Prime Brokerage, Inc. (as successor to Bank of America

         
26
  CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

Notes to Financial Statements

N.A.) (“BNP”) that allows the Fund to borrow up to an initial limit of $300,000,000 and a Lending Agreement, as defined below. Borrowings under the Agreement are secured by assets of the Fund that are held with the Fund’s custodian in a separate account (the “pledged collateral”). Interest is charged at the quarterly LIBOR (London Inter-bank Offered Rate) plus .95% on the amount borrowed and .85% on the undrawn balance. For the year ended October 31, 2010, the average borrowings and the average interest rate were $193,000,000 and 1.31%, respectively. As of October 31, 2010, the amount of such outstanding borrowings is $193,000,000. The interest rate applicable to the borrowings on October 31, 2010 was 1.24%.
 
The Lending Agreement is a separate side-agreement between the Fund and BNP pursuant to which BNP may borrow a portion of the pledged collateral (the “Lent Securities”) in an amount not to exceed the outstanding borrowings owed by the Fund to BNP under the Agreement. The Lending Agreement is intended to permit the Fund to significantly reduce the cost of its borrowings under the Agreement. BNP may re-register the Lent Securities in its own name or in another name other than the Fund, and may pledge, re-pledge, sell, lend or otherwise transfer or use the Lent Securities with all attendant rights of ownership. (It is the Fund’s understanding that BNP will perform due diligence to determine the creditworthiness of any party that borrows Lent Securities from BNP.) The Fund may designate any security within the pledged collateral as ineligible to be a Lent Security, provided there are eligible securities within the pledged collateral in an amount equal to the outstanding borrowing owed by the Fund. During the period in which the Lent Securities are outstanding, BNP must remit payment to the Fund equal to the amount of all dividends, interest or other distributions earned or made by the Lent Securities.
 
Under the terms of the Lending Agreement, the Lent Securities are marked to market daily, and if the value of the Lent Securities exceeds the value of the then-outstanding borrowings owed by the Fund to BNP under the Agreement (the “Current Borrowings”), BNP must, on that day, either (1) return Lent Securities to the Fund’s custodian in an amount sufficient to cause the value of the outstanding Lent Securities to equal the Current Borrowings; or (2) post cash collateral with the Fund’s custodian equal to the difference between the value of the Lent Securities and the value of the Current Borrowings. If BNP fails to perform either of these actions as required, the Fund will recall securities, as discussed below, in an amount sufficient to cause the value of the outstanding Lent Securities to equal the Current Borrowings. The Fund can recall any of the Lent Securities and BNP shall, to the extent commercially possible, return such security or equivalent security to the Fund’s custodian no later than three business days after such request. If the Fund recalls a Lent Security pursuant to the Lending Agreement, and BNP fails to return the Lent Securities or equivalent securities in a timely fashion, BNP shall remain liable to the Fund’s custodian for the ultimate delivery of such Lent Securities, or equivalent securities, and for any buy-in costs that the executing broker for the sales transaction may impose with respect to the failure to deliver. The Fund shall also have the right to apply and set-off an amount equal to one hundred percent (100%) of the then-current fair market value of such Lent Securities against the Current Borrowings.
 
Note 8 – Synthetic Convertible Securities
The Fund may establish a “synthetic” convertible instrument by combining separate securities that possess the economic characteristics similar to a convertible security, i.e., fixed-income securities (“fixed-income component”), which may be a convertible or non-convertible security and the right to acquire equity securities (“convertible component”). The fixed-income component is achieved by investing in fixed income securities such as bonds, preferred stocks, and money market instruments. The convertible component is achieved by investing in warrants or purchased options to buy common stock at a certain exercise price, or options on a stock index. In establishing a synthetic instrument, the Fund may pool a basket of fixed-income securities and a basket of warrants or purchased options that produce the economic characteristics similar to a convertible security. Within each basket of fixed-income securities and warrants or options, different companies may issue the fixed-income and convertible components, which may be purchased separately and at different times.
 
The Fund may also purchase synthetic securities created by other parties, typically investment banks, including convertible structured notes. Convertible structured notes are fixed-income debentures linked to equity. Convertible structured notes have the attributes of a convertible security; however, the investment bank that issued the convertible note assumes the credit risk associated with the investment, rather than the issuer of the underlying common stock into which the note is convertible. Purchasing synthetic convertible securities may offer more flexibility than purchasing a convertible security.

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   27


 

Notes to Financial Statements

 
Note 9 – When-Issued and Delayed Delivery Securities
The Fund may purchase securities on a when-issued or delayed-delivery basis. Although the payment and interest terms of these securities are established at the time the Fund enters into the commitment, the securities may be delivered and paid for a month or more after the date of purchase, when their value may have changed. The Fund makes such commitments only with the intention of actually acquiring the securities, but may sell the securities before the settlement date if Calamos Advisors deems it advisable for investment reasons. The Fund may utilize spot and forward foreign currency exchange transactions to reduce the risk inherent in fluctuations in the exchange rate between one currency and another when securities are purchased or sold on a when-issued or delayed-delivery basis.
 
At the time when the Fund enters into a binding obligation to purchase securities on a when-issued basis, liquid assets (cash, U.S. Government securities or other “high-grade” debt obligations) of the Fund having a value at least as great as the purchase price of the securities to be purchased will be segregated on the books of the Fund and held by the custodian throughout the period of the obligation. The use of this investment strategy may increase net asset value fluctuation.
 
Note 10 – Structured Equity-Linked Securities
The Fund may also invest in structured equity-linked securities created by third parties, typically investment banks. Structured equity-linked securities created by such parties may be designed to simulate the characteristics of traditional convertible securities or may be designed to alter or emphasize a particular feature. Traditional convertible securities typically offer stable cash flows with the ability to participate in capital appreciation of the underlying common stock. Because traditional convertible securities are exercisable at the option of the holder, the holder is protected against downside risk. Structured equity-linked securities may alter these characteristics by offering enhanced yields in exchange for reduced capital appreciation or less downside protection, or any combination of these features. Structured equity-linked instruments may include structured notes, equity-linked notes, mandatory convertibles and combinations of securities and instruments, such as a debt instrument combined with a forward contract. Income received from these securities is recorded as dividends on the Statement of Operations.
 
Note 11 – Valuations
Various inputs are used to determine the value of the Fund’s investments. These inputs are categorized into three broad levels as follows:
 
  •  Level 1 Prices are determined using inputs from unadjusted quoted prices from active markets (including securities actively traded on a securities exchange) for identical assets.
 
  •  Level 2 Prices are determined using significant observable market inputs other than unadjusted quoted prices, including quoted prices of similar securities, fair value adjustments to quoted foreign securities, interest rates, credit risk, prepayment speeds, and other relevant data.
 
  •  Level 3 Prices reflect unobservable market inputs (including the Fund’s own judgments about assumptions market participants would use in determining fair value) when observable inputs are unavailable.
 
Debt securities (including U.S. government and government agency obligations) are valued based upon evaluated prices received from an independent pricing service or from a dealer or broker who makes markets in such securities. Pricing services utilize various observable market data and as such, debt securities are generally categorized as Level 2. The levels are not necessarily an indication of the risk or liquidity of the Fund’s investments.

         
28   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

Notes to Financial Statements

 
The following is a summary of the inputs used in valuing the Fund’s holdings at fair value:
 
                                 
    CONVERTIBLE OPPORTUNITIES AND INCOME FUND
    LEVEL 1   LEVEL 2   LEVEL 3   TOTAL
Assets:                                
Corporate Bonds
  $     $ 538,761,205     $     $ 538,761,205  
Convertible Bonds
            196,659,997             $ 196,659,997  
U.S. Government and Agency Securities
            6,902,561             $ 6,902,561  
Sovereign Bonds
            11,701,670             $ 11,701,670  
Synthetic Convertible Securities (Corporate Bonds)
            17,075,646             $ 17,075,646  
Synthetic Convertible Securities (U.S. Government and Agency Securities)
            218,651             $ 218,651  
Synthetic Convertible Securities (Sovereign Bonds)
            368,688             $ 368,688  
Synthetic Convertible Securities (Purchased Options)
    3,118,188                     $ 3,118,188  
Convertible Preferred Stocks
    86,981,269       26,100,750             $ 113,082,019  
Structured Equity-Linked Securities
            39,611,698             $ 39,611,698  
Common Stocks
    40,056,510                     $ 40,056,510  
Short Term Investment
    22,056,035                     $ 22,056,035  
                                 
                                 
    $ 152,212,002     $ 837,400,866     $     $ 989,612,868  
                                 
Liabilities:                                
Interest Rate Swaps
            6,773,325             $ 6,773,325  
                                 
Total   $     $ 6,773,325     $     $ 6,773,325  
                                 
 
Note 12 – Legal Proceedings
The Fund, the Fund’s Board of Trustees, Calamos Advisors, and the corporate parent of Calamos Advisors have been named as defendants in a putative class action complaint captioned Brown v. Calamos, et al., which was filed in the Circuit Court of Cook County, Illinois on September 13, 2010, and removed to the U.S. District Court for the Northern District of Illinois on October 13, 2010 (the “Brown Complaint”). The Brown Complaint generally alleges that the Fund’s Board of Trustees breached certain fiduciary duties owed to the common shareholders of the Fund by approving the redemption of the Fund’s Auction Rate Cumulative Preferred Shares (the “ARPS”) at their liquidation preference, and by recapitalizing the Fund with debt-based borrowings that were allegedly less advantageous to the Fund’s common shareholders. The Brown Complaint also alleges that Calamos Advisors, the corporate parent of Calamos Advisors and the Fund itself aided and abetted the Trustees’ alleged breaches of fiduciary duty and were unjustly enriched as a result. The suit seeks indeterminate monetary and punitive damages from the named defendants, as well as injunctive relief. The defendants believe that the Brown Complaint is without merit, and intend to defend themselves vigorously against these charges.
 
The Fund’s Board of Trustees, Calamos Advisors, and the corporate parent of Calamos Advisors also have been named as defendants in a putative class action complaint captioned Bourrienne v. Calamos, et al. which was filed in the Circuit Court of Cook County, Illinois on October 15, 2010, and removed to the U.S. District Court for the Northern District of Illinois on November 12, 2010 (the “Bourrienne Complaint”). The Bourrienne Complaint generally alleges that the Fund’s Board of Trustees breached certain fiduciary duties owed to the common shareholders of the Fund by approving the redemption of the Fund’s ARPS at their liquidation preference, and by recapitalizing the Fund with debt-based borrowings that were allegedly less advantageous to the Fund’s common shareholders. The Bourrienne Complaint also alleges that Calamos Advisors and the corporate parent of Calamos Advisors aided and abetted the Trustees’ alleged breaches of fiduciary duty and were unjustly enriched as a result. The suit seeks indeterminate monetary and punitive damages from the named defendants, as well as injunctive relief. The defendants believe that the Bourrienne Complaint is without merit, and intend to defend themselves vigorously against these charges.
 
The defendants in the Brown Complaint and Bourrienne Complaints have filed motions to dismiss the cases under the Securities Litigation Uniform Standards Act of 1998 and on various alternative grounds. The plaintiff in the Brown Complaint has moved to remand that case to the Circuit Court of Cook County. To date, there has been no ruling on any of the motions filed by the parties.
 
The Fund believes that neither the Brown Complaint nor the Bourrienne Complaint has any present material adverse effect on the ability of Calamos Advisors to perform its obligations under its investment advisory contract with the Fund.

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   29


 

Financial Highlights

 
Selected data for a share outstanding throughout each period were as follows:
 
                                         
    Year Ended October 31,
    2010   2009   2008   2007   2006
Net asset value, beginning of period
    $11.83       $8.26       $16.38       $16.42       $16.59  
                                         
Income from investment operations:
                                       
Net investment income (loss)
    0.91 **     0.84 **     1.16 **     1.44 **     1.50  
                                         
Net realized and unrealized gain (loss)
    1.22       3.88       (7.31 )     0.97       0.81  
                                         
Distributions to preferred shareholders from:
                                       
Net investment income (common share equivalent basis)
          (0.01 )     (0.13 )     (0.41 )     (0.36 )
                                         
Net realized gains (common share equivalent basis)
                (0.12 )     (0.02 )     (0.03 )
                                         
Total from investment operations
    2.13       4.71       (6.40 )     1.98       1.92  
                                         
Less distributions to common shareholders from:
                                       
Net investment income
    (1.00 )     (0.94 )     (1.41 )     (1.55 )     (1.61 )
                                         
Net realized gains
          (0.02 )     (0.31 )     (0.47 )     (0.48 )
                                         
Return of capital
    (0.14 )     (0.18 )                  
                                         
Capital charge resulting from issuance of common and preferred shares and related offering costs
    (a)     (a)     (a)            
                                         
Premiums from shares sold in at the market offerings
    0.02                          
                                         
Net asset value, end of period
    $12.84       $11.83       $8.26       $16.38       $16.42  
                                         
Market value, end of period
    $13.09       $11.40       $9.10       $16.90       $19.73  
                                         
Total investment return based on:(b)
                                       
Net asset value
    19.12%       62.00%       (42.58% )     11.51%       10.47%  
                                         
Market value
    26.02%       41.70%       (38.69% )     (4.25 )%     12.81%  
                                         
Net assets, end of period (000)
    $801,354       $651,707       $409,035       $784,997       $771,994  
                                         
Preferred shares, at redemption value ($25,000 per share liquidation preference) (000’s omitted)
    $—       $—       $104,000       $384,000       $384,000  
                                         
Ratios to average net assets applicable to common shareholders:
                                       
Net expenses(c)
    1.67%       2.87%       1.92%       1.08%       1.04%  
                                         
Gross expenses prior to expense and earnings credits(c)
    1.71%       2.98%       2.16%       1.43%       1.42%  
                                         
Net expenses, excluding interest expense
    1.19%       2.36%       1.30%       1.08%       1.04%  
                                         
Net investment income (loss)(c)
    7.48%       8.79%       8.38%       8.83%       9.17%  
                                         
Preferred share distributions
    —%       0.10%       0.92%       2.51%       2.18%  
                                         
Net investment income (loss), net of preferred share distributions from net investment income
    7.48%       8.69%       7.46%       6.32%       6.99%  
                                         
Portfolio turnover rate
    37%       30%       53%       52%       48%  
                                         
Asset coverage per preferred share, at end of period(d)
    $—       $—       $123,350       $76,142       $75,291  
                                         
Asset coverage per $1,000 of loan outstanding(e)
    $5,152       $4,377       $3,745       $—       $—  
                                         
 
** Net investment income allocated based on average shares method.
 
(a) Amount equated to less than $0.005 per common share.
 
(b) Total investment return is calculated assuming a purchase of common stock on the opening of the first day and a sale on the closing of the last day of the period reported. Dividends and distributions are assumed, for purposes of this calculation, to be reinvested at prices obtained under the Fund’s dividend reinvestment plan. Total return is not annualized for periods less than one year. Brokerage commissions are not reflected. NAV per share is determined by dividing the value of the Fund’s portfolio securities, cash and other assets, less all liabilities, by the total number of common shares outstanding. The common share market price is the price the market is willing to pay for shares of the Fund at a given time. Common share market price is influenced by a range of factors, including supply and demand and market conditions.
 
(c) Does not reflect the effect of dividend payments to Preferred Shareholders.
 
(d) Calculated by subtracting the Fund’s total liabilities (not including Preferred Shares) from the Fund’s total assets and dividing this by the number of Preferred Shares outstanding.
 
(e) Calculated by subtracting the Fund’s total liabilities (not including Note payable) and preferred shares from the Fund’s total assets and dividing this by the amount of note payable outstanding, and by multiplying the result by 1,000.

         
30   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

Report of Independent Registered Public Accounting Firm

 
To the Shareholders and Board of Trustees of Calamos Convertible Opportunities and Income Fund
 
We have audited the accompanying statement of assets and liabilities, including the schedule of investments, of Calamos Convertible Opportunities and Income Fund (the “Fund”) as of October 31, 2010, the related statements of operations and cash flows for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended. These financial statements and financial highlights are the responsibility of the Fund’s management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits.
 
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Fund’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of October 31, 2010, by correspondence with the Fund’s custodian and brokers; where replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.
 
In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of the Fund as of October 31, 2010, the results of its operations and cash flows for the year then ended, the changes in its net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended, in conformity with accounting principles generally accepted in the United States of America.
 
-s- Deloitte & Touche LLP
 
Chicago, Illinois
December 17, 2010

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   31


 

Trustee Approval of Management Agreement (Unaudited)

 
The Board of Trustees of the Fund oversees the management of the Fund, and, as required by law, determines annually whether to continue the Fund’s management agreement with Calamos Advisors under which Calamos Advisors serves as the investment manager and administrator for the Fund. The “Independent Trustees,” who comprise more than 80% of the Board, have never been affiliated with Calamos Advisors.
 
In connection with their most recent consideration regarding the continuation of the management agreement, the Trustees received and reviewed a substantial amount of information provided by Calamos Advisors in response to detailed requests of the Independent Trustees and their independent legal counsel. In the course of their consideration of the agreement, the Independent Trustees were advised by their counsel and, in addition to meeting with management of Calamos Advisors, they met separately in executive session with their counsel.
 
At a meeting held on June 9, 2010, based on their evaluation of the information referred to above and other information, the Trustees determined that the overall arrangements between the Fund and Calamos Advisors were fair and reasonable in light of the nature, extent and quality of the services provided by Calamos Advisors and its affiliates, the fees charged for those services and other matters that the Trustees considered relevant in the exercise of their business judgment. At that meeting, the Trustees, including all of the Independent Trustees, approved the continuation of the management agreement through July 31, 2011, subject to possible earlier termination as provided in the agreement.
 
In connection with its consideration of the management agreement, the Board considered, among other things: (i) the nature, quality and extent of the Adviser’s services, (ii) the investment performance of the Fund as well as performance information for comparable funds and other comparable clients of the advisor, (iii) the fees and other expenses paid by the Fund as well as expense information for comparable funds and for other comparable clients of the Adviser, (iv) the profitability of the Adviser and its affiliates from their relationship with the Fund, (v) whether economies of scale may be realized as the Fund grows and whether fee levels share with Fund investors economies of scale and (vi) other benefits to the Adviser from its relationship with the Fund. In the Board’s deliberations, no single factor was responsible for the Board’s decision to approve continuation of the management agreements.
 
Nature, Extent and Quality of Services. The Board’s consideration of the nature, extent and quality of the Adviser’s services to the Fund took into account the knowledge gained from the Board’s meetings with the Adviser throughout the prior year. In addition, the Board considered: the Adviser’s long-term history of managing the Fund; the consistency of investment approach; the background and experience of the Adviser’s investment personnel responsible for managing the Fund; the Adviser’s performance as administrator of the Fund, including, among other things, in the areas of brokerage selection, trade execution, compliance and shareholder communications; and frequent favorable recognition of the Adviser in the media and in industry publications. The Board also reviewed the Adviser’s resources and key personnel involved in providing investment management services to the Fund, including the time that investment personnel devote to the Fund and the investment results produced by the Adviser’s in-house research. The Board noted the significant personal investments that the Adviser’s key investment personnel have made in the Fund, which further aligns the interests of the Adviser and its personnel with those of the Fund’s shareholders. In addition, the Board considered compliance reports about the Adviser from the Fund’s Chief Compliance Officer. The Board concluded that the nature, extent and quality of the services provided by the Adviser to the Fund were appropriate and consistent with the management agreements and that the Fund was likely to continue to benefit from services provided under its management agreement with the Adviser.
 
Investment Performance of the Fund. The Board considered the Fund’s investment performance over various time periods, including how the Fund performed compared to the median performance of a group of comparable funds (the Fund’s “Universe Median”) selected by Lipper, Inc., an independent data service provider. The performance periods considered by the Board ended on March 31, 2010. Where available, the Board considered one-, three-, five- and ten-year performance.
 
The Board considered the Fund’s net asset value performance, noting that the Fund outperformed its Universe Median during the three- and five-year periods, although it underperformed its Universe Median during the one-year period.
 
For the reasons noted above, the Board concluded that continuation of the management agreement for the Fund was in the best interest of the Fund and its shareholders.
 
Costs of Services Provided and Profits Realized by the Adviser. Using information provided by Lipper, the Board evaluated the Fund’s actual management fee rate compared to the median management fee rate for other mutual funds similar in size, character and

         
32   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

Trustee Approval of Management Agreement (Unaudited)

investment strategy (the Fund’s “Expense Group”), and the Fund’s total expense ratio compared to the median total expense ratio of the Fund’s Expense Group.
 
The Board considered that the Fund’s management fee rate after reimbursement is lower than the median of the Fund’s Expense Group, although the Fund’s total expense ratio is higher than the median of the Fund’s Expense Group. The Board also considered, however, that the Fund’s contractual management fee rate at a common asset level is lower than the median of the Fund’s Expense Group. The Board, in its consideration of expenses, also took into account its review of the Fund’s performance.
 
The Board also reviewed the Adviser’s management fee rates for its institutional separate accounts and for its sub-advised funds (for which the Adviser provides portfolio management services only). The Board noted that the Adviser’s assertion that although, generally, the rates of fees paid by those clients were lower than the rates of fees paid by the Fund, the differences reflected the Adviser’s greater level of responsibilities and significantly broader scope of services regarding the Fund, and the more extensive regulatory obligations and risks associated with managing the Fund.
 
The Board also considered the Adviser’s costs in serving as the Fund’s investment adviser and manager, including costs associated with technology, infrastructure and compliance necessary to manage the Fund. The Board reviewed the Adviser’s methodology for allocating costs among the Adviser’s lines of business. The Board also considered information regarding the structure of the Adviser’s compensation program for portfolio managers, analysts and certain other employees and the relationship of such compensation to the attraction and retention of quality personnel. Finally, the Board reviewed information on the profitability of the Adviser in serving as the Fund’s investment manager and of the Adviser and its affiliates in all of their relationships with the Fund, as well as an explanation of the methodology utilized in allocating various expenses among the Fund and the Adviser’s other business units. Data was provided to the Board with respect to profitability, both on a pre- and post-marketing cost basis. The Board also reviewed the annual report of the Adviser’s parent company and discussed its corporate structure.
 
After its review of all the matters addressed, including those outlined above, the Board concluded that the rate of management fee paid by the Fund to the Adviser, in light of the nature and quality of the services provided, was reasonable and in the best interests of the Fund’s shareholders.
 
Economies of Scale and Fee Levels Reflecting Those Economies. In reviewing the Fund’s fees and expenses, the Trustees examined the potential benefits of economies of scale and whether any economies of scale should be reflected in the Fund’s fee structure. They noted that the Fund has had a relatively stable asset base since commencement of operation and that there do not appear to have been any significant economies of scale realized since that time.
 
Other Benefits Derived from the Relationship with the Fund. The Board also considered other benefits that accrue to the Adviser and its affiliates from their relationship with the Fund. The Board concluded that, other than the services to be provided by the Adviser and its affiliates pursuant to their agreements with the Fund and the fees payable by the Fund therefore, the Fund and the Adviser may potentially benefit from their relationship with each other in other ways. The Board also considered the Adviser’s use of a portion of the commissions paid by the Fund on their portfolio brokerage transactions to obtain research products and services benefiting the Fund and/or other clients of the Adviser and concluded, based on reports from the Fund’s Chief Compliance Officer, that the Adviser’s use of “soft” commission dollars to obtain research products and services was consistent with regulatory requirements.
 
After full consideration of the above factors as well as other factors that were instructive in their consideration, the Trustees, including all of the Independent Trustees, concluded that the continuation of the management agreement with the Adviser was in the best interest of the Fund and its shareholders.

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   33


 

Tax Information (Unaudited)

 
We are providing this information as required by the Internal Revenue Code (Code). The amounts shown may differ from those elsewhere in this report due to differences between tax and financial reporting requirements. In January 2011, shareholders will receive Form 1099-DIV which will include their share of qualified dividends and capital gains distributed during the calendar year 2010. Shareholders are advised to check with their tax advisors for information on the treatment of these amounts on their individual income tax returns.
 
Under Section 854(b)(2) of the Code, the Fund hereby designates $4,661,081 or the maximum amount allowable under the Code, as qualified dividends for the fiscal year ended October 31, 2010.
 
Under Section 854(b)(2) of the Code, the Fund hereby designates 8.10% of the ordinary income dividends as income qualifying for the corporate dividends received deduction for the fiscal year ended October 31, 2010.

         
34   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

Trustees & Officers (Unaudited)

 
The management of the Trust, including general supervision of the duties performed for each Fund under the investment management agreement between the Trust and Calamos Advisors, is the responsibility of its board of trustees. Each trustee elected will hold office for the terms noted below, or until such trustee’s earlier resignation, death or removal.
 
The following table sets forth each trustee’s name, age at October 31, 2010, position(s) with the Trust, number of portfolios in the Calamos Fund Complex overseen, principal occupation(s) during the past five years and other directorships held, and date first elected or appointed. Each trustee oversees each Fund of the Trust.
 
             
        PORTFOLIOS IN
   
        FUND COMPLEXÙ
  PRINCIPAL OCCUPATION(S)
NAME AND AGE   POSITION(S) WITH TRUST   OVERSEEN   AND OTHER DIRECTORSHIPS
Trustees who are interested persons of the Trust:
John P. Calamos, Sr., 70*
  Trustee and President (since inception)
Term expires 2011
  20   Chairman, CEO, and Co-Chief Investment Officer, Calamos Asset Management, Inc. (“CAM”), Calamos Holdings LLC (“CHLLC”) and Calamos Advisors LLC and its predecessor (“Calamos Advisors”), and President and Co-Chief Investment Officer, Calamos Financial Services LLC and its predecessor (“CFS”); Director, CAM
             
 
Trustees who are not interested persons of the Trust:
Weston W. Marsh, 60
  Trustee (since inception)
Term expires 2013
  20   Of Counsel and, until December 31, 2006, Partner, Freeborn & Peters LLP (law firm)
             
             
John E. Neal, 60
  Trustee (since inception)
Term expires 2012
  20   Private investor; Director, Equity Residential (publicly-owned REIT) and Creation Investments (private international microfinance company); Partner, Linden LLC (health care private equity)
             
             
William R. Rybak, 59
  Trustee (since 2002)
Term expires 2011
  20   Private investor; Director, Christian Brothers Investment Services, Inc. (since February 2010); formerly Executive Vice President and Chief Financial Officer, Van Kampen Investments, Inc. and subsidiaries (investment manager); Director, Howe Barnes Hoefer Arnett, Inc. (investment services firm); Director, PrivateBancorp, Inc. (bank holding company); Trustee, JNL Series Trust, JNL Investors Series Trust and JNL Variable Fund LLC**
             
             
Stephen B. Timbers, 66
  Trustee (since 2004); Lead
Independent Trustee (since 2005)
Term expires 2013
  20   Private investor; formerly Vice Chairman, Northern Trust Corporation (bank holding company); formerly President and Chief Executive Officer, Northern Trust Investments, N.A. (investment manager); formerly President, Northern Trust Global Investments, a division of Northern Trust Corporation, and Executive Vice President, The Northern Trust Corporation
             
             
David D. Tripple, 66
  Trustee (since 2006)
Term expires 2012
  20   Private investor; Trustee, Century Shares Trust and Century Small Cap Select Fund***
 
* Mr. Calamos is an “interested person” of the Trust as defined in the 1940 Act because he is an officer of the Trust and an affiliate of Calamos Advisors and CFS. Mr. Calamos is the uncle of Nick P. Calamos, Vice President of the Trust.
 
** Overseeing 100 portfolios in fund complex.
 
*** Overseeing two portfolios in fund complex.
 
Ù The Fund Complex consists of CALAMOS Investment Trust, CALAMOS Advisors Trust, CALAMOS Convertible Opportunities and Income Fund, CALAMOS Convertible and High Income Fund, CALAMOS Strategic Total Return Fund, CALAMOS Global Total Return Fund and CALAMOS Global Dynamic Income Fund.
 
The address of each trustee is 2020 Calamos Court, Naperville, Illinois 60563.
 
The Fund’s Statement of Additional Information contains additional information about the Fund’s trustees, and is available without charge and upon request by calling 800.582.6959.

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   35


 

Trustees & Officers (Unaudited)

 
OFFICERS. The preceding table gives information about John P. Calamos, Sr., who is president of the Trust. The following table sets forth each other officer’s name, age at October 31, 2010, position with the Trust and date first appointed to that position, and principal occupation(s) during the past five years. Each officer serves until his or her successor is chosen and qualified or until his or her resignation or removal by the board of trustees.
 
         
        PRINCIPAL OCCUPATION(S)
NAME AND AGE   POSITION(S) WITH TRUST   DURING PAST 5 YEARS
Nimish S. Bhatt, 47
  Vice President and Chief Financial Officer (since 2007)   Senior Vice President and Director of Operations, CAM, CHLLC, Calamos Advisors and CFS (since 2004)
         
         
James J. Boyne, 44
  Vice President (since 2008)   President of Distribution and Operations, CAM, Calamos Advisors and CFS (since 2009); Senior Vice President, General Counsel and Secretary, Calamos Advisors (since 2008); Chief Operating Officer — Distribution, CFS (since 2008); prior thereto, Chief Operating Officer, General Counsel and Executive Managing Director of McDonnell Investment Management, LLC (2001-2008)
         
         
Nick P. Calamos, 49
  Vice President (since 2002)   President of Investments and Co-Chief Investment Officer, CAM, CHLLC, Calamos Advisors and CFS
J. Christopher Jackson, 59
  Vice President and Secretary (since 2010)*   Senior Vice President, General Counsel and Secretary, CAM, CHLLC, Calamos Advisors and CFS (since 2010); Director, U.S. Head of Retail Legal and Co-Global Head of Retail Legal of Deutsche Bank AG (2006-2010); prior thereto, Director, Senior Vice President, General Counsel and Assistant Secretary of Hansberger Global Investors, Inc. (1996-2006)
         
         
Mark J. Mickey, 59
  Chief Compliance Officer (since 2005)   Chief Compliance Officer, Calamos Funds (since 2005) and Chief Compliance Officer, Calamos Advisors (2005-2006))
 
The address of each officer is 2020 Calamos Court, Naperville, Illinois 60563.
 
* Subsequent to October 31, 2010, Mr. Jackson was appointed Secretary of the Trust.
 
Results of Annual Meeting
The Fund held its annual meeting of shareholders on July 9, 2010. The purpose of the annual meeting was to elect two Independent Trustees to the Fund’s board of trustees for a three year term, or until the trustee’s successor is duly elected and qualified, and to conduct any other lawful business of the Fund. Mr. Weston M. Marsh and Mr. Stephen B. Timbers were nominated for reelection as Trustees, and were elected as such by a plurality vote as follows:
 
                         
            BROKER NON-VOTES
TRUSTEE NOMINEE   VOTES FOR   VOTES WITHHELD   AND ABSTENTIONS
Weston M. Marsh     52,041,564       1,113,387       0  
Stephen B. Timbers     52,009,192       1,145,759       0  
 
Messrs. J. Calamos Sr., Neal, Rybak, and Tripples’ terms of office as Trustees continued after the meeting.

         
36   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

About Closed-End Funds

 
What is a Closed-End Fund?
A closed-end fund is a publicly traded investment company that raises its initial investment capital through the issuance of a fixed number of shares to investors in a public offering. Shares of a closed-end fund are listed on a stock exchange or traded in the over-the-counter market. Like all investment companies, a closed-end fund is professionally managed and offers investors a unique investment solution based on its investment objective approved by the fund’s Board of Directors.
 
Potential Advantages of Closed-End Fund Investing
•  Defined Asset Pool Allows Efficient Portfolio Management—Although closed-end fund shares trade actively on a securities exchange, this doesn’t affect the closed-end fund manager because there are no new investors buying into or selling out of the fund’s portfolio.
 
•  More Flexibility in the Timing and Price of Trades—Investors can purchase and sell shares of closed-end funds throughout the trading day, just like the shares of other publicly traded securities.
 
•  Lower Expense Ratios—The expense ratios of closed-end funds are oftentimes less than those of mutual funds. Over time, a lower expense ratio could enhance investment performance.
 
•  Closed-End Structure Makes Sense for Less-Liquid Asset Classes—A closed-end structure makes sense for investors considering less-liquid asset classes, such as high-yield bonds or micro-cap stocks.
 
•  Ability to Put Leverage to Work—Closed-end funds may issue senior securities (such as preferred shares or debentures) or borrow money to “leverage” their investment positions.
 
•  No Minimum Investment Requirements
 
OPEN-END MUTUAL FUNDS VERSUS CLOSED-END FUNDS
 
     
OPEN-END FUND   CLOSED-END FUND
     
Issues new shares on an ongoing basis   Generally issues a fixed number of shares
     
     
Issues common equity shares   Can issue common equity securities and senior securities such as preferred shares and bonds
 
     
Sold at NAV plus any sales charge   Price determined by the marketplace
     
     
Sold through the fund’s distributor   Traded in the secondary market
 
     
Fund redeems shares at NAV calculated at the close of business day   Fund does not redeem shares
     

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   37


 

Level Rate Distribution Policy

 
Using a Level Rate Distribution Policy to Promote Dependable Income and Total Return
The goal of the level rate distribution policy is to provide investors a predictable, though not assured, level of cash flow, which can either serve as a stable income stream or, through reinvestment, contribute significantly to long-term total return.
 
We understand the importance that investors place on the stability of dividends and their ability to contribute to long-term total return, which is why we have instituted a level rate distribution policy for the Fund. Under the policy, monthly distributions paid may include net investment income, net realized short-term capital gains and, if necessary, return of capital. In addition, a limited number of distributions per calendar year may include net realized long-term capital gains. There is no guarantee that the Fund will realize capital gains in any given year. Distributions are subject to re-characterization for tax purposes after the end of the fiscal year. All shareholders with taxable accounts will receive written notification regarding the components and tax treatment for distributions via Form 1099-DIV.
 
Distributions from the Fund are generally subject to Federal income taxes. For purposes of maintaining the level rate distribution policy, the Fund may realize short-term capital gains on securities that, if sold at a later date, would have resulted in long-term capital gains. Maintenance of a level rate distribution policy may increase transaction and tax costs associated with the Fund.
 
Automatic Dividend Reinvestment Plan
 
Maximizing Investment with an Automatic Dividend Reinvestment Plan
The Automatic Dividend Reinvestment Plan offers a simple, cost-efficient and convenient way to reinvest your dividends and capital gains distributions in additional shares of the Fund, allowing you to increase your investment in the Fund.
 
Potential Benefits
•  Compounded Growth: By automatically reinvesting with the Plan, you gain the potential to allow your dividends and capital gains to compound over time.
 
•  Potential for Lower Commission Costs: Additional shares are purchased in large blocks, with brokerage commissions shared among all plan participants. There is no cost to enroll in the Plan.
 
•  Convenience: After enrollment, the Plan is automatic and includes detailed statements for participants. Participants can terminate their enrollment at any time.
 
Pursuant to the Plan, unless a shareholder is ineligible or elects otherwise, all dividend and capital gains on common shares distributions are automatically reinvested by BNY Mellon Asset Servicing, as agent for shareholders in administering the Plan (“Plan Agent”), in additional common shares of the Fund. Shareholders who elect not to participate in the Plan will receive all dividends and distributions payable in cash paid by check mailed directly to the shareholder of record (or, if the shares are held in street or other nominee name, then to such nominee) by Plan Agent, as dividend paying agent. Shareholders may elect not to participate in the Plan and to receive all dividends and distributions in cash by sending written instructions to Plan Agent, as dividend paying agent, at: Dividend Reinvestment Department, P.O. Box 1958, Newark, New Jersey 07101-9774. Participation in the Plan is completely voluntary and may be terminated or resumed at any time without penalty by giving notice in writing to the Plan Agent; such termination will be effective with respect to a particular dividend or distribution if notice is received prior to the record date for the applicable distribution.
 
The shares are acquired by the Plan Agent for the participant’s account either (i) through receipt of additional common shares from the Fund (“newly issued shares”) or (ii) by purchase of outstanding common shares on the

         
38   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

Automatic Dividend Reinvestment Plan

open market (“open-market purchases”) on the NYSE or elsewhere. If, on the payment date, the net asset value per share of the common shares is equal to or less than the market price per common share plus estimated brokerage commissions (a “market premium”), the Plan Agent will receive newly issued shares from the Fund for each participant’s account. The number of newly issued common shares to be credited to the participant’s account will be determined by dividing the dollar amount of the dividend or distribution by the greater of (i) the net asset value per common share on the payment date, or (ii) 95% of the market price per common share on the payment date.
 
If, on the payment date, the net asset value per common share exceeds the market price plus estimated brokerage commissions (a “market discount”), the Plan Agent has a limited period of time to invest the dividend or distribution amount in shares acquired in open-market purchases. The weighted average price (including brokerage commissions) of all common shares purchased by the Plan Agent as Plan Agent will be the price per common share allocable to each participant. If, the Plan Agent is unable to invest the full dividend amount in open-market purchases during the purchase period or if the market discount shifts to a market premium during the purchase period, the Plan Agent will cease making open-market purchases and will invest the uninvested portion of the dividend or distribution amount in newly issued shares at the close of business on the last purchase date.
 
The automatic reinvestment of dividends and distributions will not relieve participants of any federal, state or local income tax that may be payable (or required to be withheld) on such dividends even though no cash is received by participants.
 
There are no brokerage charges with respect to shares issued directly by the Fund as a result of dividends or distributions payable either in shares or in cash. However, each participant will pay a pro rata share of brokerage commissions incurred with respect to the Plan Agent’s open-market purchases in connection with the reinvestment of dividends or distributions. If a participant elects to have the Plan Agent sell part or all of his or her common shares and remit the proceeds, such participant will be charged his or her pro rata share of brokerage commissions on the shares sold, plus a $15 transaction fee. There is no direct service charge to participants in the Plan; however, the Fund reserves the right to amend the Plan to include a service charge payable by the participants.
 
A participant may request the sale of all of the common shares held by the Plan Agent in his or her Plan account in order to terminate participation in the Plan. If such participant elects in advance of such termination to have the Plan Agent sell part or all of his shares, the Plan Agent is authorized to deduct from the proceeds a $15.00 fee plus the brokerage commissions incurred for the transaction. A participant may re-enroll in the Plan in limited circumstances.
 
The terms and conditions of the Plan may be amended by the Plan Agent or the Fund at any time upon notice are required by the Plan.
 
This discussion of the Plan is only summary, and is qualified in its entirety to the Terms and Conditions of the Dividend Reinvestment Plan filed as part of the Fund’s registration statement.
 
For additional information about the Plan, please contact the Plan Agent, The Bank of New York, at 800.432.8224. If you wish to participate in the Plan and your shares are held in your own name, simply call the Plan Agent. If your shares are not held in your name, please contact your brokerage firm, bank, or other nominee to request that they participate in the Plan on your behalf. If your brokerage firm, bank, or other nominee is unable to participate on your behalf, you may request that your shares be re-registered in your own name.
 
We’re pleased to provide our shareholders with the additional benefit of the Fund’s Dividend Reinvestment Plan and hope that it may serve your financial plan.

         
    CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT   39


 

The Calamos Investments Advantage

 
Calamos’ history is one of performing well for our clients through 30 years of advances and declines in the market. We use proprietary risk-management strategies designed to control volatility, and maintain a balance between risk and reward throughout a market cycle.
 
Disciplined Investment Philosophy and Process
Calamos Investments has developed a proprietary research and monitoring process that goes far beyond traditional security analysis. This process applies to each of our investment strategies, with emphasis varying by strategy. When combined with the company-specific research and industry insights of our investment team, the goal is nimble, dynamic management of a portfolio that allows us to anticipate and adapt to changing market conditions. In each of our investment strategies, from the most conservative to the most aggressive, our goals include maximizing return while controlling risk, protecting principal during volatile markets, avoiding short-term market timing, and maintaining a vigilant long-term outlook.
 
Comprehensive Risk Management
Our approach to risk management includes continual monitoring, adherence to our discipline, and a focus on assuring a consistent risk profile during all phases of the market cycle. Incorporating qualitative and quantitative factors as well as a strong sell discipline, this risk-control policy seeks to help preserve investors’ capital over the long term.
 
Proven Investment Management Team
The Calamos Family of Funds benefits from our team’s decades of experience in the investment industry. We follow a one-team, one-process approach that leverages the expertise of more than 50 investment professionals, led by Co-Chief Investment Officers John P. Calamos, Sr. and Nick P. Calamos, whose investment industry experience dates back to 1970 and 1983, respectively. Through the collective industry experience and educational achievements of our research and portfolio staff, we can respond to the challenges of the market with innovative and timely ideas.
 
Sound Proprietary Research
Over the years, we have invested significant time and resources in developing and refining sophisticated analytical models that are the foundation of the firm’s research capabilities, which we apply in conjunction with our assessment of broad themes. We believe evolving domestic policies, the growing global economy, and new technologies present long-term investment opportunities for those who can detect them.

         
40   CALAMOS CONVERTIBLE OPPORTUNITIES AND INCOME FUND ANNUAL REPORT    


 

 
     
     
(MOUSE ICON)   STAY CONNECTED
www.calamos.com
 
Visit our website for timely fund performance, detailed fund profiles, fund news and insightful market commentary.
 
MANAGING YOUR CALAMOS
FUNDS INVESTMENTS
 
Calamos Investments offers several convenient
means to monitor, manage and feel confident
about your Calamos investment choice.
PERSONAL ASSISTANCE: 800.582.6959
Dial this toll-free number to speak with a knowledgeable Client Services Representative who can help answer questions, perform transactions or address issues concerning your Calamos Fund.
YOUR FINANCIAL ADVISOR
We encourage you to talk to your financial advisor to determine how the Calamos Funds can benefit your investment portfolio based on your financial goals, risk tolerance, time horizon and income needs.


 

 
A description of the Calamos Proxy Voting Policies and Procedures and the Fund’s proxy voting record for the 12 month period ended June 30, 2010, are available free of charge upon request by calling 800.582.6959, by visiting the Calamos website at www.calamos.com, by writing Calamos at: Calamos Investments, Attn: Client Services, 2020 Calamos Court, Naperville, IL 60563. The Fund’s proxy voting record is also available free of charge by visiting the SEC website at http://www.sec.gov.
 
The Fund files its complete list of portfolio holdings with the SEC for the first and third quarters each fiscal year on Form N-Q. The Forms N-Q are available free of charge, upon request, by calling or writing Calamos Investments at the phone number or address provided above or by visiting the SEC website at http://www.sec.gov. You may also review or, for a fee, copy the forms at the SEC’s Public Reference Room in Washington, D.C. Information on the operation of the Public Reference Room may be obtained by calling 800.732.0330.
 
On June 21, 2010, the Fund submitted a CEO annual certification to the NYSE on which the Fund’s chief executive officer certified that he was not aware, as of that date, of any violation by the Fund of the NYSE’s corporate governance listing standards. In addition, the Fund’s report to the SEC on Form N-CSR contains certifications by the fund’s principal executive officer and principal financial officer as required by Rule 30a-2(a) under the 1940 Act, relating to, among other things, the quality of the Fund’s disclosure controls and procedures and internal control over financial reporting.
 
FOR 24 HOUR AUTOMATED SHAREHOLDER ASSISTANCE: 800.432.8224
 
TO OBTAIN INFORMATION ABOUT YOUR INVESTMENTS: 800.582.6959
 
VISIT OUR WEBSITE: www.calamos.com
 
INVESTMENT ADVISER:
Calamos Advisors LLC
2020 Calamos Court
Naperville, IL 60563-2787
 
CUSTODIAN AND FUND ACCOUNTING AGENT:
State Street Bank and Trust Company
225 Franklin Street
Boston, MA 02111
 
TRANSFER AGENT:
The Bank of New York Mellon
P.O. Box 11258
Church Street Station
New York, NY 10286
800.524.4458
 
INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM:
Deloitte & Touche LLP
Chicago, IL
 
LEGAL COUNSEL:
K&L Gates LLP
Chicago, IL
 
2020 Calamos Court
Naperville, IL 60563-2787
800.582.6959
www.calamos.com
 
© 2010 Calamos Holdings LLC. All Rights Reserved.
Calamos® and Calamos Investments® are registered
trademarks of Calamos Holdings LLC.
 
CHIANR 1790 2010


 

ITEM 2. CODE OF ETHICS.
(a) As of the end of the period covered by this report, the registrant has adopted a code of ethics (the “Code of Ethics”) that applies to its principal executive officer, principal financial officer, principal accounting officer or controller, or person performing similar functions.
(b) No response required.
(c) The registrant has not amended its Code of Ethics as it relates to any element of the code of ethics definition enumerated in paragraph(b) of this Item 2 during the period covered by this report.
(d) The registrant has not granted a waiver or an implicit waiver from its Code of Ethics during the period covered by this report.
(e) Not applicable.
(f) (1) The registrant’s Code of Ethics is attached as an Exhibit hereto.
ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.
The registrant’s Board of Trustees has determined that, for the period covered by the shareholder report presented in Item 1 hereto, it has four audit committee financial experts serving on its audit committee, each of whom is an independent Trustee for purpose of this N-CSR item: John E. Neal, William R. Rybak, Stephen B. Timbers and David D. Tripple. Under applicable securities laws, a person who is determined to be an audit committee financial expert will not be deemed an “expert” for any purpose, including without limitation for the purposes of Section 11 of the Securities Act of 1933, as a result of being designated or identified as an audit committee financial expert pursuant to this Item. The designation or identification of a person as an audit committee financial expert does not impose on such person any duties, obligations, or liabilities that are greater than the duties, obligations and liabilities imposed on such person as a member of audit committee and board of directors in the absence of such designation or identification. The designation or identification of a person as an audit committee financial expert pursuant to this Item does not affect the duties, obligations, or liabilities of any other member of the audit committee or board of directors.
ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.
(a) Audit Fee — $54,166 and $44,512 are the aggregate fees billed in each of the last two fiscal years for professional services rendered by the principal accountant to the registrant for the audit of the registrant’s annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years.
(b) Audit-Related Fees — $25,199 and $23,856 are the aggregate fees billed in each of the last two fiscal years for assurance and related services rendered by the principal accountant to the registrant that are reasonably related to the performance of the audit of the

 


 

registrant’s financial statements and are not reported under paragraph (a) of this Item 4.
(c) Tax Fees — $5,420 and $5,089 are the aggregate fees billed in each of the last two fiscal years for professional services rendered by the principal accountant to the registrant for tax compliance, tax advice and tax planning.
(d) All Other Fees — $0 and $0 are the aggregate fees billed in each of the last two fiscal years for products and services provided by the principal accountant to the registrant, other than the services reported in paragraph (a)-(c) of this Item 4.
(e) (1) Registrant’s audit committee meets with the principal accountants and management to review and pre-approve all audit services to be provided by the principal accountants.
     The audit committee shall pre-approve all non-audit services to be provided by the principal accountants to the registrant, including the fees and other compensation to be paid to the principal accountants; provided that the pre-approval of non-audit services is waived if (i) the services were not recognized by management at the time of the engagement as non-audit services,(ii) the aggregate fees for all non-audit services provided to the registrant are less than 5% of the total fees paid by the registrant to its principal accountants during the fiscal year in which the non-audit services are provided, and (iii) such services are promptly brought to the attention of the audit committee by management and the audit committee approves them prior to the completion of the audit.
     The audit committee shall pre-approve all non-audit services to be provided by the principal accountants to the investment adviser or any entity controlling, controlled by or under common control with the adviser that provides ongoing services to the registrant if the engagement relates directly to the operations or financial reporting of the registrant, including the fees and other compensation to be paid to the principal accountants; provided that pre-approval of non-audit services to the adviser or an affiliate of the adviser is not required if (i) the services were not recognized by management at the time of the engagement as non-audit services, (ii) the aggregate fees for all non-audit services provided to the adviser and all entities controlling, controlled by or under common control with the adviser are less than 5% of the total fees for non-audit services requiring pre-approval under paragraph (e)(1)of this Item 4 paid by the registrant, the adviser or its affiliates to the registrant’s principal accountants during the fiscal year in which the non-audit services are provided, and (iii) such services are promptly brought to the attention of the audit committee by management and the audit committee approves them prior to the completion of the audit.
(e)(2) No percentage of the principal accountant’s fees or services described in each of paragraphs (b)–(d) of this Item were approved pursuant to the waiver provision paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X.
(f) No disclosures are required by this Item 4(f).

 


 

(g) $5,420 and $5,089 are the aggregate non-audit fees billed in each of the last two fiscal years for services rendered by the principal accountant to the registrant. $0 and $0 are the aggregate non-audit fees billed in each of the last two fiscal years for services rendered by the principal accountant to the investment adviser or any entity controlling, controlled by or under common control with the adviser.
(h) No disclosures are required by this Item 4(h).
ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS.
The registrant has a separately-designated standing audit committee. The members of the registrant’s audit committee are Weston W. Marsh, John E. Neal, William R. Rybak, Stephen B. Timbers, and David D. Tripple.
ITEM 6. SCHEDULE OF INVESTMENTS
Included in the Report to Shareholders in Item 1.
ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.
The registrant has delegated authority to vote all proxies relating to the Fund’s portfolio securities to the Fund’s investment advisor, Calamos Advisors LLC (“Calamos Advisors”). The Calamos Advisors Proxy Voting Policies and Procedures are included as an Exhibit hereto.
ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.
(a)(1) As of October 31, 2010, the registrant is lead by a team of investment professionals. The Co-Chief Investment Officers and senior strategy analysts are responsible for the day-to-day management of the registrant’s portfolio:
During the past five years, John P. Calamos, Sr. has been President and Trustee of the Fund and chairman, CEO and Co-CIO of the Fund’s investment adviser, Calamos Advisors LLC and its predecessor company (“Calamos Advisors”). Nick P. Calamos has been Vice President and Trustee of the Fund (through June 2006) and President of Investments and Co-CIO of Calamos Advisors and its predecessor company. John P. Calamos, Jr., Executive Vice President of Calamos Advisors, joined the firm in 1985 and has held various senior investment positions since that time. Dino Dussias joined Calamos Advisors in October 1995 and has been a senior strategy analyst since April 2007. Christopher Hartman joined Calamos Advisors in February 1997 and has been a senior strategy analyst since May 2007. John Hillenbrand joined Calamos Advisors in 2002 and has been a senior strategy analyst since August 2002. Steve Klouda joined Calamos Advisors in 1994 and has been a senior strategy analyst since July 2002. Bryan Lloyd joined Calamos Advisors in October 2003 and has been a senior strategy analyst since June 2006. Jeff Scudieri joined Calamos Advisors in 1997 and has been a senior strategy analyst since September 2002. Jon Vacko joined Calamos Advisors in 2000 and has been a senior strategy analyst since July 2002. Joe Wysocki joined Calamos Advisors in October 2003 and has been a senior strategy analyst since February 2007.
(a)(2) The portfolio managers also have responsibility for the day-to-day management of accounts other than the registrant. Information regarding these other accounts is set forth below.
NUMBER OF OTHER ACCOUNTS MANAGED AND ASSETS BY ACCOUNT TYPE AS OF OCTOBER 31, 2010

 


 

                                                 
    Registered   Other Pooled    
    Investment   Investment   Other
    Companies   Vehicles   Accounts
    Accounts   Assets   Accounts   Assets   Accounts   Assets
John P. Calamos Sr.
    25       25,745,493,202       11       1,047,239,868       8,309       5,888,216,756  
Nick P. Calamos
    25       25,745,493,202       11       1,047,239,868       8,309       5,888,216,756  
John P. Calamos, Jr.
    25       25,745,493,202       11       1,047,239,868       8,309       5,888,216,756  
Dino Dussias
    25       25,745,493,202       11       1,047,239,868       8,309       5,888,216,756  
Christopher Hartman
    25       25,745,493,202       11       1,047,239,868       8,309       5,888,216,756  
John Hillenbrand
    25       25,745,493,202       11       1,047,239,868       8,309       5,888,216,756  
Steve Klouda
    25       25,745,493,202       11       1,047,239,868       8,309       5,888,216,756  
Bryan Lloyd
    25       25,745,493,202       11       1,047,239,868       8,309       5,888,216,756  
Jeff Scudieri
    25       25,745,493,202       11       1,047,239,868       8,309       5,888,216,756  
Jon Vacko
    25       25,745,493,202       11       1,047,239,868       8,309       5,888,216,756  
Joe Wysocki
    25       25,745,493,202       11       1,047,239,868       8,309       5,888,216,756  
 
Number of Accounts and Assets for which Advisory Fee is Performance Based as of: October 31, 2010
 
    Registered   Other Pooled    
    Investment   Investment   Other
    Companies   Vehicles   Accounts
    Accounts   Assets   Accounts   Assets   Accounts   Assets
John P. Calamos Sr.
    3       375,371,500       1       19,431,293       0        
Nick P. Calamos
    3       375,371,500       1       19,431,293       0        
John P. Calamos, Jr.
    3       375,371,500       1       19,431,293       0        
Dino Dussias
    3       375,371,500       1       19,431,293       0        
Christopher Hartman
    3       375,371,500       1       19,431,293       0        
John Hillenbrand
    3       375,371,500       1       19,431,293       0        
Steve Klouda
    3       375,371,500       1       19,431,293       0        
Bryan Lloyd
    3       375,371,500       1       19,431,293       0        
Jeff Scudieri
    3       375,371,500       1       19,431,293       0        
Jon Vacko
    3       375,371,500       1       19,431,293       0        
Joe Wysocki
    3       375,371,500       1       19,431,293       0        

 


 

Other than potential conflicts between investment strategies, the side-by-side management of both the Fund and other accounts may raise potential conflicts of interest due to the interest held by Calamos Advisors in an account and certain trading practices used by the portfolio managers (e.g., cross trades between a Fund and another account and allocation of aggregated trades). Calamos Advisors has developed policies and procedures reasonably designed to mitigate those conflicts. For example, Calamos Advisors will only place cross-trades in securities held by the Fund in accordance with the rules promulgated under the 1940 Act and has adopted policies designed to ensure the fair allocation of securities purchased on an aggregated basis.
The portfolio managers advise certain accounts under a performance fee arrangement. A performance fee arrangement may create an incentive for a portfolio manager to make investments that are riskier or more speculative than would be the case in the absence of performance fees. A performance fee arrangement may result in increased compensation to the portfolio managers from such accounts due to unrealized appreciation as well as realized gains in the client’s account.
(a)(3) Calamos Advisors has developed and implemented a number of incentives that reward the professional staff to ensure that key employees are retained. Calamos Advisors’ senior management has established salary, short and long term incentive programs and benefit programs that we believe are competitive. Calamos Advisors’ incentive programs are based on investment performance, professional performance and an individual’s overall contribution. These goals and measures are established and reviewed on an annual basis during performance reviews. As of October 31, 2010, each portfolio manager receives compensation in the form of an annual base salary and a discretionary target bonus, each payable in cash. Their discretionary target bonus is set at a percentage of the respective base salary. The amounts paid to the portfolio managers and the criteria utilized to determine the amounts are benchmarked against industry specific data provided by a third party analytical agency. The compensation structure does not differentiate between the Funds and other accounts managed by the portfolio managers, and is determined on an overall basis, taking into consideration the performance of the various strategies managed by the portfolio managers. Portfolio performance, as measured by risk-adjusted portfolio performance, is utilized to determine the discretionary target bonus, as well as overall performance of Calamos Advisors. Portfolio managers are eligible to receive annual non-equity awards under a long term incentive compensation program, set at a percentage of the respective base salary.
(a)(4) As of October 31, 2010, the end of the registrant’s most recently completed fiscal year, the dollar range of securities beneficially owned by each portfolio manager in the registrant is shown below:

 


 

     
Portfolio Manager   Registrant
John P. Calamos Sr.
  $100,001-$500,000
Nick P. Calamos
  $50,001-$100,000
John P. Calamos, Jr.
  None
Dino Dussias
  None
Christopher Hartman
  None
John Hillenbrand
  None
Steve Klouda
  None
Bryan Lloyd
  None
Jeff Scudieri
  None
Jon Vacko
  $1-$10,000
Joe Wysocki
  None
(b) Not applicable.
ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS.
Not applicable
ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.
No material changes.
ITEM 11. CONTROLS AND PROCEDURES.
a) The registrant’s principal executive officer and principal financial officer have evaluated the registrant’s disclosure controls and procedures within 90 days of this filing and have concluded that the registrant’s disclosure controls and procedures were effective, as of that date, in ensuring that information required to be disclosed by the registrant in this Form N-CSR was recorded, processed, summarized, and reported timely.
b) There were no changes in the registrant’s internal controls over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) that occurred during the second fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.
ITEM 12. EXHIBITS.
(a)(1) Code of Ethics
(a)(2)(i) Certification of Principal Executive Officer.
(a)(2)(ii) Certification of Principal Financial Officer.
(a)(2)(iii) Proxy Voting Policies and Procedures.

 


 

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Calamos Convertible Opportunities and Income Fund
         
By:
  /s/ John P. Calamos, Sr.    
Name:
 
 
John P. Calamos, Sr.
   
Title:
  Principal Executive Officer    
Date:
  December 21, 2010    
 
       
By:
  /s/ Nimish S. Bhatt    
Name:
 
 
Nimish S. Bhatt
   
Title:
  Principal Financial Officer    
Date:
  December 21, 2010    
Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
         
By:
  /s/ John P. Calamos, Sr.    
Name:
 
 
John P. Calamos, Sr.
   
Title:
  Principal Executive Officer    
Date:
  December 21, 2010    
 
       
By:
  /s/ Nimish S. Bhatt    
Name:
 
 
Nimish S. Bhatt
   
Title:
  Principal Financial Officer    
Date:
  December 21, 2010