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 *
MCDERMOTT THOMAS P
  2. Issuer Name and Ticker or Trading Symbol
INVESTORS FINANCIAL SERVICES CORP [IFIN]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
INVESTORS BANK & TRUST COMPANY, 200 CLARENDON STREET
3. Date of Earliest Transaction (Month/Day/Year)
03/07/2005
(Street)

BOSTON, MA 02116
4. If Amendment, Date Original Filed(Month/Day/Year)
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 03/07/2005   F   787 D $ 50 14,205 D  
Common Stock 03/07/2005   A   1,146 A $ 34.344 15,351 D  
Common Stock 03/07/2005   F   77 D $ 50 15,274 D  
Common Stock 03/07/2005   A   104 A $ 37.4375 15,378 D  
Common Stock 03/07/2005   F   884 D $ 50 14,494 D  
Common Stock 03/07/2005   A   1,562 A $ 28.3 16,056 D  
Common Stock 03/07/2005   F   113 D $ 50 15,943 D  
Common Stock 03/07/2005   A   152 A $ 37.46 16,095 D  
Common Stock 03/07/2005   F   3,681 D $ 50 12,414 D  
Common Stock 03/07/2005   A   4,859 A $ 37.88 17,273 D  
Common Stock 03/07/2005   F   915 D $ 50 16,358 D  
Common Stock 03/07/2005   A   2,083 A $ 21.98 18,441 D  
Common Stock 03/07/2005   F   80 D $ 50 18,361 D  
Common Stock 03/07/2005   A   111 A $ 36.08 18,472 D  
Common Stock 03/07/2005   F   81 D $ 50 18,391 D  
Common Stock 03/07/2005   A   113 A $ 36.08 18,504 D  
Common Stock 03/07/2005   F   80 D $ 50 18,424 D  
Common Stock 03/07/2005   A   112 A $ 36.08 18,536 D  
Common Stock 03/07/2005   F   77 D $ 50 18,459 D  
Common Stock 03/07/2005   A   108 A $ 36.08 18,567 D  
Common Stock 03/07/2005   F   2,646 D $ 50 15,921 D  
Common Stock 03/07/2005   A   3,668 A $ 36.08 19,589 D  
Common Stock 03/07/2005   F   76 D $ 50 19,513 D  
Common Stock 03/07/2005   A   106 A $ 36.08 19,619 D  
Common Stock 03/07/2005   F   75 D $ 50 19,544 D  
Common Stock 03/07/2005   A   105 A $ 36.08 19,649 D  
Common Stock 03/07/2005   F   77 D $ 50 19,572 D  
Common Stock 03/07/2005   A   108 A $ 36.08 19,680 D  
Common Stock 03/07/2005   F   1,473 D $ 50 18,207 D  
Common Stock 03/07/2005   A   2,042 A $ 36.08 20,249 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
Common Stock (right to buy) $ 34.344 03/07/2005   M     1,146 11/08/2000(2) 11/08/2010 Common Stock 1,146 $ 0 26,951 D  
Common Stock (right to buy) $ 50 03/07/2005   A   787   03/07/2005(1) 11/08/2010 Common Stock 787 $ 0 27,738 D  
Common Stock (right to buy) $ 37.4375 03/07/2005   M     104 01/02/2001(1) 01/02/2011 Common Stock 104 $ 0 27,634 D  
Common Stock (right to buy) $ 50 03/07/2005   A   77   03/07/2005(1) 01/02/2011 Common Stock 77 $ 0 27,711 D  
Common Stock (right to buy) $ 28.3 03/07/2005   M     1,562 11/08/2001(2) 11/08/2011 Common Stock 1,562 $ 0 26,149 D  
Common Stock (right to buy) $ 50 03/07/2005   A   884   03/07/2005(1) 11/08/2011 Common Stock 884 $ 0 27,033 D  
Common Stock (right to buy) $ 37.46 03/07/2005   M     152 04/01/2002(1) 04/01/2012 Common Stock 152 $ 0 26,881 D  
Common Stock (right to buy) $ 50 03/07/2005   A   113   03/07/2005(1) 04/01/2012 Common Stock 113 $ 0 26,994 D  
Common Stock (right to buy) $ 37.88 03/07/2005   M     4,859 04/23/2002(2) 04/23/2012 Common Stock 4,859 $ 0 22,135 D  
Common Stock (right to buy) $ 50 03/07/2005   A   3,681   03/07/2005(1) 04/23/2012 Common Stock 3,681 $ 0 25,816 D  
Common Stock (right to buy) $ 21.98 03/07/2005   M     2,083 04/15/2003(3) 04/15/2013 Common Stock 2,083 $ 0 23,733 D  
Common Stock (right to buy) $ 50 03/07/2005   A   915   03/07/2005(1) 04/15/2013 Common Stock 915 $ 0 24,648 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     111 11/25/2003(1) 01/03/2010 Common Stock 111 $ 0 24,537 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     113 11/25/2003(1) 04/03/2010 Common Stock 113 $ 0 24,424 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     112 11/25/2003(1) 07/03/2010 Common Stock 112 $ 0 24,312 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     108 11/25/2003(1) 10/02/2010 Common Stock 108 $ 0 24,204 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     3,668 11/25/2003(1) 11/08/2010 Common Stock 3,668 $ 0 20,536 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     106 11/25/2003(1) 04/02/2011 Common Stock 106 $ 0 20,430 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     105 11/25/2003(1) 07/02/2011 Common Stock 105 $ 0 20,325 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     108 11/25/2003(1) 10/01/2011 Common Stock 108 $ 0 20,217 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     2,042 11/25/2003(1) 11/08/2011 Common Stock 2,042 $ 0 18,175 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     158 11/25/2003(1) 01/02/2012 Common Stock 158 $ 0 18,017 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     127 11/25/2003(1) 07/01/2012 Common Stock 127 $ 0 17,890 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     170 11/25/2003(1) 10/01/2012 Common Stock 170 $ 0 17,720 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     223 11/25/2003(1) 01/02/2013 Common Stock 223 $ 0 17,497 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     224 11/25/2003(1) 04/01/2013 Common Stock 224 $ 0 17,273 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     225 11/25/2003(1) 07/01/2013 Common Stock 225 $ 0 17,048 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     208 11/25/2003(1) 10/01/2013 Common Stock 208 $ 0 16,840 D  
Common Stock (right to buy) $ 36.08 03/07/2005   M     676 11/25/2003(1) 04/15/2013 Common Stock 676 $ 0 16,164 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MCDERMOTT THOMAS P
INVESTORS BANK & TRUST COMPANY
200 CLARENDON STREET
BOSTON, MA 02116
  X      

Signatures

 John E. Henry   03/09/2005
**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) Options granted pursuant to the Company's 1995 Non-Employee Director Stock Option Plan and became exercisable on the date of the grant.
(2) Options granted pursuant to the Company's 1995 Non-Employee Director Stock Option Plan and become exercisabe in 48 equal monthly installments beginning on the date of the grant.
(3) Options granted pursuant to the Company's 1995 Non-Employee Director Stock Option Plan and become exercisable in 36 equal monthly installments beginning on the date of the grant.

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