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).

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