Filed by NYSE Group, Inc.
              Pursuant to Rule 425 under the Securities Act of 1933, as amended,
                                 and deemed filed pursuant to Rule 14a-12 of the
                                     Securities Exchange Act of 1934, as amended

                                                              Subject Companies:
                                                   New York Stock Exchange, Inc.
                                                      Archipelago Holdings, Inc.
                                                 (Commission File No. 001-32274)


                                                         Date: November 14, 2005


On November 11, 2005, the New York Stock Exchange, Inc. issued the following 
bulletin to its members:

                                      * * *

                           Special Membership Bulletin

                       [LETTERHEAD OF MARSHALL N. CARTER]


DATE:             NOVEMBER 11, 2005

TO:               NYSE MEMBERS

FROM:             MARSHALL N. CARTER

RE:               LITIGATION DOCUMENTS


I appreciate the strongly supportive comments we have received from you in
response to my November 9 memorandum about the effort by Mr. William Higgins and
nine other plaintiffs to deprive you of the opportunity to vote on the
NYSE/Archipelago merger. Let me reiterate that the claim by Mr. Higgins and his
attorneys to have "uncovered" evidence in litigation that is somehow damaging to
the New York Stock Exchange is completely false.

But you need not take my word for it. To give our Members the opportunity to see
the testimony and judge for themselves, we have posted on our public website all
depositions of NYSE directors and management, as well as exhibits to those
depositions under our control. The documents are available at
www.nyse.com/merger.

Mr. Higgins has said he would drop his suit if we made these transcripts public.
Let him do so.

Let Mr. Higgins also disclose the documents that he has refused to make public,
such as the engagement letters he and the other plaintiffs have entered into
with their attorneys, purportedly on your behalf.

Mr. Higgins seems to believe his fellow Members are incapable of making
decisions on their own. We are grateful to the many Members who, by casting
their ballots, are showing Mr. Higgins that he is wrong. WE URGE THOSE OF YOU
WHO HAVE NOT DONE SO YET TO REVIEW THE S-4 PROXY/PROSPECTUS CAREFULLY AND VOTE
FOR THE MERGER AS SOON AS POSSIBLE.





          IMPORTANT ACQUISITION INFORMATION WITH RESPECT TO THE MERGER

In connection with the proposed merger of the New York Stock Exchange, Inc.
("NYSE") and Archipelago Holdings, Inc. ("Archipelago"), NYSE Group, Inc. has
filed a registration statement on Form S-4 with the Securities and Exchange
Commission (SEC) containing a joint proxy statement/prospectus regarding the
proposed transaction. The parties have filed other publicly available relevant
documents concerning the proposed transaction with the SEC. The SEC declared the
Registration Statement effective on November 3, 2005.


NYSE MEMBERS AND ARCHIPELAGO STOCKHOLDERS ARE URGED TO READ THE FINAL JOINT
PROXY STATEMENT/ PROSPECTUS REGARDING THE PROPOSED TRANSACTION BECAUSE IT WILL
CONTAIN IMPORTANT INFORMATION. NYSE members and Archipelago stockholders can
obtain a free copy of the final joint proxy statement/prospectus, as well as
other filings containing information about NYSE and Archipelago without charge,
at the SEC's website (http://www.sec.gov). Copies of the final joint proxy
statement/prospectus can also be obtained, without charge, once they are filed
with the SEC, by directing a request to the Office of the Corporate Secretary,
NYSE, 11 Wall Street, New York 10005, 212-656-2061 or to Archipelago, Attention:
Investor Relations, at 100 S. Wacker Drive, Suite 1800, Chicago, Illinois 60606
or calling (888) 514-7284.


The NYSE, Archipelago and their respective directors and executive officers and
other members of management and employees may be deemed to be participants in
the solicitation of proxies from Archipelago stockholders in respect of the
proposed transaction. Information regarding Archipelago's directors and
executive officers is available in Archipelago's proxy statement for its 2005
annual meeting of stockholders, dated March 31, 2005.

Additional information regarding the interests of such potential participants
will be included in the joint proxy statement/prospectus and the other relevant
documents filed with the SEC when they become available. This correspondence
shall not constitute an offer to sell or the solicitation of an offer to buy any
securities, nor shall there be any sale of securities in any jurisdiction in
which such offer, solicitation or sale would be unlawful prior to registration
or qualification under the securities laws of any such jurisdiction. No offering
of securities shall be made except by means of a prospectus meeting the
requirements of Section 10 of the Securities Act of 1933, as amended.

                           FORWARD-LOOKING STATEMENTS

Certain statements in this correspondence may contain forward-looking
information regarding the NYSE and Archipelago and the combined company after
the completion of the transactions that are intended to be covered by the safe
harbor for "forward-looking statements" provided by the Private Securities
Litigation Reform Act of 1995. These statements include, but are not limited to,
the benefits of the business combination transaction involving NYSE and
Archipelago, including future financial and operating results, the new company's
plans, objectives, expectations and intentions and other statements that are not
historical facts. Such statements are based upon the current beliefs and
expectations of NYSE's and Archipelago's management and are subject to
significant risks and uncertainties. Actual results may differ from those set
forth in the forward-looking statements.

The following factors, among others, could cause actual results to differ from
those set forth in the forward-looking statements: the ability to obtain
governmental approvals of the transaction on the proposed terms and schedule;
the failure of NYSE members or Archipelago shareholders to approve the
transaction; the risk that the businesses will not be integrated successfully;
the risk that the cost savings and any other synergies from the transaction may
not be fully realized or may take longer to realize than expected; disruption
from the transaction making it more difficult to maintain relationships with
customers, employees or suppliers; competition and its effect on pricing,
spending, third-party relationships and revenues; social and political
conditions such as war, political unrest or terrorism; general economic
conditions and normal business uncertainty. Additional risks and factors are
identified in Archipelago's filings with the Securities Exchange Commission,
including its Report on Form 10-K for the fiscal year ending December 31, 2004
which is available on Archipelago's website at http://www.Archipelago.com, and
the Registration Statement on Form S-4 filed by NYSE Group, Inc. with the SEC on
July 21, 2005 (and amended on September 24, 2005, October 24, 2005 and November
3, 2005).


You should not place undue reliance on forward-looking statements, which speak
only as of the date of this document. Except for any obligation to disclose
material information under the Federal securities laws, none of the NYSE,
Archipelago or the combined company after the completion of the transactions
undertake any obligation to release publicly any revisions to any
forward-looking statements to reflect events or circumstances after the date of
this document.