Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
MCCULLOUGH THOMAS A
   2. Issuer Name and Ticker or Trading Symbol
DST SYSTEMS INC [DST] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Executive VP/COO
(Last)
(First)
(Middle)
C/O DST SYSTEMS, 333 WEST 11TH ST 5TH FL		 3. Date of Earliest Transaction (Month/Day/Year)
04/30/2007
(Street)

KANSAS CITY, MO 64105		 4. If Amendment, Date Original Filed(Month/Day/Year)
05/02/2007		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 04/30/2007   M   25,833 A $ 43.905 488,225 D  
Common Stock 04/30/2007   F   5,068 D $ 80.035 483,157 D  
Common Stock 04/30/2007   S   20,765 D $ 78.52 (1) 462,392 D  
Common Stock 04/30/2007   M   61,170 A $ 48.23 523,562 D  
Common Stock 04/30/2007   F   10,562 D $ 80.035 513,000 D  
Common Stock 04/30/2007   S   50,608 D $ 78.52 (1) 462,392 D  
Common Stock 04/30/2007   M   40,930 A $ 55.9688 503,322 D  
Common Stock 04/30/2007   F   33,970 D $ 80.035 469,352 D  
Common Stock 04/30/2007   M   94,420 A $ 45.75 563,772 D  
Common Stock 04/30/2007   F   71,547 D $ 80.035 492,225 D  
Common Stock 04/30/2007   M   16,890 A $ 54.14 509,115 D  
Common Stock 04/30/2007   F   13,800 D $ 80.035 495,315 D  
Common Stock 04/30/2007   M   148,410 A $ 43.935 643,725 D  
Common Stock 04/30/2007   F   110,555 D $ 80.035 533,170 D  
Common Stock 04/30/2007   M   12,430 A $ 47.155 545,600 D  
Common Stock 04/30/2007   F   9,542 D $ 80.035 536,058 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Option to Purchase $ 43.905 04/30/2007   M     25,833 07/02/2003 02/28/2010 Common Stock 25,833 $ 0 0 D  
Option to Purchase $ 48.23 04/30/2007   M     61,170 05/14/2005 05/14/2012 Common Stock 61,170 $ 0 0 D  
Option to Purchase $ 55.9688 04/30/2007   M     40,930 11/14/2003 11/14/2010 Common Stock 40,930 $ 0 0 D  
Option to Purchase $ 45.75 04/30/2007   M     94,420 05/08/2004 05/08/2011 Common Stock 94,420 $ 0 0 D  
Option to Purchase $ 54.14 04/30/2007   M     16,890 07/10/2004 07/10/2011 Common Stock 16,890 $ 0 0 D  
Option to Purchase $ 43.935 04/30/2007   M     148,410 11/13/2004 11/13/2011 Common Stock 148,410 $ 0 0 D  
Option to Purchase $ 47.155 04/30/2007   M     12,430 01/08/2005 01/08/2012 Common Stock 12,430 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MCCULLOUGH THOMAS A
C/O DST SYSTEMS
333 WEST 11TH ST 5TH FL
KANSAS CITY, MO 64105		   X     Executive VP/COO  

Signatures

 Randall D. Young for Thomas A. McCullough by power of attorney   05/07/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Price shown is an average of the prices of a vast array of individual sales. The sales prices ranged from $78.20 to $78.98.

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