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 *
PEARSON PLC
  2. Issuer Name and Ticker or Trading Symbol
INTERACTIVE DATA CORP/MA/ [IDC]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
80 STRAND, 
3. Date of Earliest Transaction (Month/Day/Year)
07/29/2010
(Street)

LONDON, X0 X0WC2R0RL
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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 07/29/2010   D   57,554,795 D $ 33.86 0 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

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
PEARSON PLC
80 STRAND
LONDON, X0 X0WC2R0RL
    X    
Pearson Overseas Holdings Ltd.
80 STRAND
LONDON ENGLAND, X0 X0WC2R0RL
    X    
Pearson Netherlands BV
VOSSIUSSTRAAT 54-55
AMSTERDAM, P7 1071
    X    
PEARSON INC
1330 AVENUE OF THE AMERICAS
7TH FLOOR
NEW YORK, NY 10019
    X    
Pearson Longman, Inc.
1330 AVENUE OF THE AMERICAS
7TH FLOOR
NEW YORK, NY 10019
    X    
Pearson DBC Holdings Inc.
1330 AVENUE OF THE AMERICAS
7TH FLOOR
NEW YORK, NY 10019
    X    

Signatures

 /s/ Pearson plc, John Makinson, Director   08/02/2010
**Signature of Reporting Person Date

 /s/ Pearson Overseas Holdings Ltd., David Colville, Director   08/02/2010
**Signature of Reporting Person Date

 /s/ Pearson Netherlands B.V., Alan Miller, Director   08/02/2010
**Signature of Reporting Person Date

 /s/ Pearson Inc., Thomas Wharton, Senior Vice President   08/02/2010
**Signature of Reporting Person Date

 /s/ Person Longman, Inc., Thomas Wharton, Vice President   08/02/2010
**Signature of Reporting Person Date

 /s/ Pearson DBC Holdings, Inc., Thomas Wharton, Vice President   08/02/2010
**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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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