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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1. Name and Address of Reporting Person * TCV VII LP   2. Issuer Name and Ticker or Trading Symbol Interactive Brokers Group, Inc. [IBKR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) __X__ Other (specify below) May be part of a 13(d) group (Last) (First) (Middle) C/O TECHNOLOGY CROSSOVER VENTURES, 528 RAMONA STREET 3. Date of Earliest Transaction (Month/Day/Year) 07/29/2009 (Street) PALO ALTO, CA 94301 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 07/29/2009   P   112,375 A $ 18.15 (1) 2,147,283 I TCV VII, L.P. (2) (3) Common Stock 07/29/2009   P   58,359 A $ 18.15 (1) 1,115,135 I TCV VII (A), L.P. (2) (4) Common Stock 07/29/2009   P   1,637 A $ 18.15 (1) 31,262 I TCV Member Fund, L.P. (2) (5) Common Stock 07/30/2009   P   18,179 A $ 18.6 (6) 2,165,462 I TCV VII, L.P. (2) (3) Common Stock 07/30/2009   P   9,441 A $ 18.6 (6) 1,124,576 I TCV VII (A), L.P. (2) (4) Common Stock 07/30/2009   P   264 A $ 18.6 (6) 31,526 I TCV Member Fund, L.P. (2) (5)

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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
TCV VII LP C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET PALO ALTO, CA 94301				May be part of a 13(d) group
TCV VII(A) L P C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET PALO ALTO, CA 94301				May be part of a 13(d) group
Technology Crossover Management VII, Ltd. C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET PALO ALTO, CA 94301				May be part of a 13(d) group
Technology Crossover Management VII, L.P. C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET PALO ALTO, CA 94301				May be part of a 13(d) group
TCV Member Fund, L.P. C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET PALO ALTO, CA 94301				May be part of a 13(d) group
Marshall Christopher P C/O TECHNOLOGY CROSSOVER VENTURES 528 RAMONA STREET PALO ALTO, CA 94301				May be part of a 13(d) group

Signatures

Carla S. Newell Authorized signatory for TCV VII, L.P.		07/30/2009
**Signature of Reporting Person		Date
Carla S. Newell Authorized signatory for TCV VII (A), L.P.		07/30/2009
**Signature of Reporting Person		Date
Carla S. Newell Authorized signatory for Technology Crossover Management VII, Ltd.		07/30/2009
**Signature of Reporting Person		Date
Carla S. Newell Authorized signatory for Technology Crossover Management VII, L.P.		07/30/2009
**Signature of Reporting Person		Date
Carla S. Newell Authorized signatory for TCV Member Fund, L.P.		07/30/2009
**Signature of Reporting Person		Date
Carla S. Newell Authorized signatory for Christopher P. Marshall		07/30/2009
**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)	This transaction was executed in multiple trades at prices ranging from $17.78 to $18.28. The price reported above reflects the weighted average purchase price. The Reporting Person hereby undertakes to provide upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price.
(2)	This Form 4 is filed by more than one Reporting Person and is a joint filing with the Form 4 filed by Jay C. Hoag, Richard H. Kimball, John L. Drew, Jon Q. Reynolds, Jr., William J.G. Griffith IV, Robert W. Trudeau (collectively, the "TCM VI Members"), TCV VI, L.P. and Technology Crossover Management VI, L.L.C. ("TCM VI") on July 30, 2009.
(3)	These securities are directly held by TCV VII, L.P. Christopher P. Marshall and each of the TCM VI Members (collectively, the "TCM VII Directors") are Class A Directors of Technology Crossover Management VII, Ltd. ("TCM VII") and limited partners of Technology Crossover Management VII, L.P. ("Management VII"). TCM VII is the general partner of Management VII, which is the general partner of TCV VII, L.P. The TCM VII Directors, TCM VII and Management VII may be deemed to beneficially own the securities held by TCV VII, L.P., but the TCM VII Directors, TCM VII and Management VII disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.
(4)	These securities are directly held by TCV VII (A), L.P. The TCM VII Directors are Class A Directors of TCM VII and limited partners of Management VII. TCM VII is the general partner of Management VII, which is the general partner of TCV VII (A), L.P. The TCM VII Directors, TCM VII and Management VII may be deemed to beneficially own the securities held by TCV VII (A), L.P., but the TCM VII Directors, TCM VII and Management VII disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.
(5)	These securities are directly held by TCV Member Fund, L.P. ("TCV MF"). The TCM VII Directors are Class A Directors of TCM VII, which is a general partner of TCV MF, and limited partners of TCV MF. The TCM VI Members are Class A Members of TCM VI, which is also a general partner of TCV MF. The TCM VII Directors, TCM VII, the TCM VI Members and TCM VI may be deemed to beneficially own certain of the securities held by TCV MF, but the TCM VII Directors, TCM VII, the TCM VI Members and TCM VI disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.
(6)	This transaction was executed in multiple trades at prices ranging from $18.35 to $18.99. The price reported above reflects the weighted average purchase price. The Reporting Person hereby undertakes to provide upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased at each separate price.

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