Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *
  TCV VI L P
 2. Date of Event Requiring Statement (Month/Day/Year)
07/28/2009		 3. Issuer Name and Ticker or Trading Symbol
Interactive Brokers Group, Inc. [IBKR]
(Last)
(First)
(Middle)
C/O TECHNOLOGY CROSSOVER VENTURES, 528 RAMONA STREET		 4. 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
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

PALO ALTO, CA 94301		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 1,190,377
I
TCV VI, L.P. (1) (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
TCV VI 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 VI, L.L.C.
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301		       May be part of a 13(d) group
HOAG JAY C
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301		     X   May be part of a 13(d) group
KIMBALL RICK
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301		     X   May be part of a 13(d) group
DREW JOHN
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301		     X   May be part of a 13(d) group
REYNOLDS JON Q JR
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301		     X   May be part of a 13(d) group
GRIFFITH WILLIAM
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301		     X   May be part of a 13(d) group
Trudeau Robert
C/O TECHNOLOGY CROSSOVER VENTURES
528 RAMONA STREET
PALO ALTO, CA 94301		     X   May be part of a 13(d) group

Signatures

Carla S. Newell Authorized signatory for TCV VI, L.P. 07/30/2009
**Signature of Reporting Person Date
Carla S. Newell Authorized signatory for Technology Crossover Management VI, L.L.C. 07/30/2009
**Signature of Reporting Person Date
Carla S. Newell Authorized signatory for Jay C. Hoag 07/30/2009
**Signature of Reporting Person Date
Carla S. Newell Authorized signatory for Richard H. Kimball 07/30/2009
**Signature of Reporting Person Date
Carla S. Newell Authorized signatory for John L. Drew 07/30/2009
**Signature of Reporting Person Date
Carla S. Newell Authorized signatory for Jon Q. Reynolds, Jr. 07/30/2009
**Signature of Reporting Person Date
Carla S. Newell Authorized signatory for William J.G. Griffith IV 07/30/2009
**Signature of Reporting Person Date
Carla S. Newell Authorized signatory for Robert W. Trudeau 07/30/2009
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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 Form 3 is filed by more than one Reporting Person and is a joint filing with the Form 3 filed by TCV VII, L.P., TCV VII (A), L.P., Technology Crossover Management VII, Ltd., Technology Crossover Management VII, L.P. and Christopher P. Marshall on July _____, 2009.
(2) These securities are directly held by TCV VI, L.P. Jay C. Hoag, Richard H. Kimball, John L. Drew, Jon Q. Reynolds, Jr., William J.G. Griffith IV and Robert W. Trudeau (collectively, the "TCM VI Members") are Class A Members of Technology Crossover Management VI, L.L.C. ("TCM VI"), which is the sole general partner of TCV VI, L.P. The TCM VI Members and TCM VI may be deemed to beneficially own the securities held by TCV VI, L.P., but the TCM VI Members and TCM VI disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.

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