Edgar Filing: Interactive Brokers Group, Inc.

sc13d

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934
(Amendment No. )*

Interactive Brokers Group, Inc.

(Name of Issuer)

Class A common stock, par value $0.01 per share

(Title of Class of Securities)

45841N107

(CUSIP Number)

Carla S. Newell
c/o Technology Crossover Ventures
528 Ramona Street
Palo Alto, California 94301
(650) 614-8200

(Name, Address and Telephone Number of Person Authorized to
Receive Notices and Communications)

June 30, 2009

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. o

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

NAMES OF REPORTING PERSONS:

TCV VI, L.P.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

DELAWARE

SOLE VOTING POWER:

NUMBER OF

1,131,772 SHARES OF COMMON STOCK (A)

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

-0- SHARES OF COMMON STOCK

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

1,131,772 SHARES OF COMMON STOCK (A)

WITH

SHARED DISPOSITIVE POWER:

-0- SHARES OF COMMON STOCK

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

1,131,772 SHARES OF COMMON STOCK

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

2.79%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 2 of 21 Pages

NAMES OF REPORTING PERSONS:

TCV VII, L.P.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

DELAWARE

SOLE VOTING POWER:

NUMBER OF

1,741,528 SHARES OF COMMON STOCK (A)

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

-0- SHARES OF COMMON STOCK

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

1,741,528 SHARES OF COMMON STOCK (A)

WITH

SHARED DISPOSITIVE POWER:

-0- SHARES OF COMMON STOCK

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

1,741,528 SHARES OF COMMON STOCK

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

4.30%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 3 of 21 Pages

NAMES OF REPORTING PERSONS:

TCV VII (A), L.P.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

DELAWARE

SOLE VOTING POWER:

NUMBER OF

904,417 SHARES OF COMMON STOCK (A)

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

-0- SHARES OF COMMON STOCK

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

904,417 SHARES OF COMMON STOCK (A)

WITH

SHARED DISPOSITIVE POWER:

-0- SHARES OF COMMON STOCK

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

904,417 SHARES OF COMMON STOCK

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

2.23%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 4 of 21 Pages

NAMES OF REPORTING PERSONS:

TCV MEMBER FUND, L.P.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

DELAWARE

SOLE VOTING POWER:

NUMBER OF

25,353 SHARES OF COMMON STOCK (A)

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

-0- SHARES OF COMMON STOCK

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

25,353 SHARES OF COMMON STOCK (A)

WITH

SHARED DISPOSITIVE POWER:

-0- SHARES OF COMMON STOCK

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

25,353 SHARES OF COMMON STOCK

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

0.06%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 5 of 21 Pages

NAMES OF REPORTING PERSONS:

TECHNOLOGY CROSSOVER MANAGEMENT VI, L.L.C.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

DELAWARE

SOLE VOTING POWER:

NUMBER OF

1,140,921 SHARES OF COMMON STOCK (A)

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

-0- SHARES OF COMMON STOCK

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

1,140,921 SHARES OF COMMON STOCK (A)

WITH

SHARED DISPOSITIVE POWER:

-0- SHARES OF COMMON STOCK

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

1,140,921 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

2.81%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 6 of 21 Pages

NAMES OF REPORTING PERSONS:

TECHNOLOGY CROSSOVER MANAGEMENT VII, L.P.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

DELAWARE

SOLE VOTING POWER:

NUMBER OF

2,645,945 SHARES OF COMMON STOCK (A)

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

-0- SHARES OF COMMON STOCK

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

2,645,945 SHARES OF COMMON STOCK (A)

WITH

SHARED DISPOSITIVE POWER:

-0- SHARES OF COMMON STOCK

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

2,645,945 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

6.53%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 7 of 21 Pages

NAMES OF REPORTING PERSONS:

TECHNOLOGY CROSSOVER MANAGEMENT VII, LTD.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

DELAWARE

SOLE VOTING POWER:

NUMBER OF

2,662,149 SHARES OF COMMON STOCK (A)

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

-0- SHARES OF COMMON STOCK

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

2,662,149 SHARES OF COMMON STOCK (A)

WITH

SHARED DISPOSITIVE POWER:

-0- SHARES OF COMMON STOCK

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

2,662,149 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

6.57%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 8 of 21 Pages

NAMES OF REPORTING PERSONS:

JAY C. HOAG

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

3,803,070 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

3,803,070 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

3,803,070 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

9.38%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 9 of 21 Pages

NAMES OF REPORTING PERSONS:

RICHARD H. KIMBALL
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

3,803,070 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

3,803,070 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

3,803,070 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

9.38%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 10 of 21 Pages

NAMES OF REPORTING PERSONS:

JOHN L. DREW
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

3,803,070 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0-SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

3,803,070 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

3,803,070 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

9.38%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 11 of 21 Pages

NAMES OF REPORTING PERSONS:

JON Q. REYNOLDS, JR.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

3,803,070 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

3,803,070 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

3,803,070 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

9.38%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 12 of 21 Pages

NAMES OF REPORTING PERSONS:

WILLIAM J.G. GRIFFITH IV
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

3,803,070 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

3,803,070 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

3,803,070 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

9.38%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 13 of 21 Pages

NAMES OF REPORTING PERSONS:

ROBERT W. TRUDEAU
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

3,803,070 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

3,803,070 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

3,803,070 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

9.38%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 14 of 21 Pages

NAMES OF REPORTING PERSONS:

CHRISTOPHER P. MARSHALL
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):

(a) o

(b) þ

SEC USE ONLY:

SOURCE OF FUNDS (SEE INSTRUCTIONS):

AF, OO

CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e):

CITIZENSHIP OR PLACE OF ORGANIZATION:

UNITED STATES CITIZEN

SOLE VOTING POWER:

NUMBER OF

-0- SHARES OF COMMON STOCK

SHARED VOTING POWER:

BENEFICIALLY

OWNED BY

2,662,149 SHARES OF COMMON STOCK (A)

EACH

SOLE DISPOSITIVE POWER:

REPORTING

PERSON

-0- SHARES OF COMMON STOCK

WITH

SHARED DISPOSITIVE POWER:

2,662,149 SHARES OF COMMON STOCK (A)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

2,662,149 SHARES OF COMMON STOCK (A)

CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS):

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11):

6.57%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

(A) Please see Item 5.

Page 15 of 21 Pages

ITEM 1. SECURITY AND ISSUER.

This statement relates to shares of Class A common stock, par value $0.01 per share (the “Common Stock”), of Interactive Brokers Group, Inc., a Delaware corporation (“IBG” or the “Company”). The Company’s principal executive offices are located at One Pickwick Plaza, Greenwich, Connecticut 06830.

ITEM 2. IDENTITY AND BACKGROUND.

(a)-(c), (f). This statement is being filed by (1) TCV VI, L.P., a Delaware limited partnership (“TCV VI”), (2) TCV VII, L.P., a Cayman Islands exempted limited partnership (“TCV VII”), (3) TCV VII (A), L.P., a Cayman Islands exempted limited partnership (“TCV VII(A)”), (4) TCV Member Fund, L.P., a Cayman Islands exempted limited partnership (“Member Fund” and, together with TCV VI, TCV VII and TCV VII(A), the “Purchasers”), (5) Technology Crossover Management VI, L.L.C., a Delaware limited liability company (“Management VI”), (6) Technology Crossover Management VII, L.P., a Cayman Islands exempted limited partnership (“Management VII”), (7) Technology Crossover Management VII, Ltd., a Cayman Islands exempted company (“TCM VII”), (8) Jay C. Hoag (“Mr. Hoag”), (9) Richard H. Kimball (“Mr. Kimball”), (10) John L. Drew (“Mr. Drew”), (11) Jon Q. Reynolds, Jr. (“Mr. Reynolds”), (12) William J.G. Griffith IV (“Mr. Griffith”), (13) Robert W. Trudeau (“Mr. Trudeau”), and (14) Christopher P. Marshall (“Mr. Marshall”). TCV VI, TCV VII, TCV VII(A), Member Fund, Management VI, Management VII, TCM VII, Mr. Hoag, Mr. Kimball, Mr. Drew, Mr. Reynolds, Mr. Griffith, Mr. Trudeau and Mr. Marshall are sometimes collectively referred to herein as the “Reporting Persons.” The agreement among the Reporting Persons relating to the joint filing of this statement is attached as Exhibit 1 hereto.

TCV VI, TCV VII, TCV VII(A), Member Fund, Management VI, Management VII and TCM VII (collectively, the “TCV Entities”) are each principally engaged in the business of investing in securities of privately and publicly held companies. Management VI is the sole general partner of TCV VI and a general partner of Member Fund. Management VII is the direct general partner of TCV VII and TCV VII(A). TCM VII is the direct general partner of Management VII, the ultimate general partner of TCV VII and TCV VII(A) and a general partner of Member Fund. The address of the principal business and office of each of the TCV Entities is 528 Ramona Street, Palo Alto, California 94301.

Mr. Hoag, Mr. Kimball, Mr. Drew, Mr. Reynolds, Mr. Griffith and Mr. Trudeau (collectively the “Management VI Members”) are the Class A Members of Management VI and, together with Mr. Marshall (collectively, the “TCM VII Directors”), are the Class A Directors of TCM VII. The TCM VII Directors are each United States citizens and the present principal occupation of each is as a venture capital investor. The business address of each of the TCM VII Directors is 528 Ramona Street, Palo Alto, California 94301.

(d), (e). During the last five years, none of the Reporting Persons has (1) been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (2) been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

Between June 23, 2009 and July 10, 2009, the Purchasers purchased the following shares of Common Stock in the open market (the “Market Shares”):


Name of Investor	Aggregate Number of Shares Acquired		Purchase Price (1)
TCV VI		1,131,772	$	15.38
TCV VII		1,741,528	$	15.37
TCV VII (A)		904,417	$	15.37
Member Fund		25,353	$	15.37


(1)		This number represents the average price per share paid for the shares purchased. Shares were purchased at prices ranging from $14.4737 to $15.7412 per share.

The source of funds for the acquisition of the Market Shares by the Purchasers was from capital contributions from their respective partners.

ITEM 4. PURPOSE OF TRANSACTION.

The Reporting Persons acquired the Common Stock for investment purposes. Depending on the factors discussed herein, the Reporting Persons may, from time to time, (i) investigate, evaluate, discuss, negotiate or agree to acquire additional shares of Common Stock from the Company or third parties and the Reporting Persons intend to obtain any necessary regulatory approvals related thereto, (ii) investigate, evaluate, discuss, negotiate or agree to retain and/or sell, exchange or dispose all or a portion of its Common Stock, in the open market, in privately negotiated transactions to the Company or third parties or through distributions to their respective partners, in change of control transactions or tender offers, or otherwise and/or (iii) request representation on the Company’s board of directors or enter into discussions with management or the board of directors regarding strategic transactions (including those involving the Company’s securities). Any actions the Reporting Persons might undertake will be dependent upon the Reporting Persons’ review of numerous factors, including, among other things, the price levels of the Common Stock; general market and economic conditions; ongoing evaluation of the Company’s business, financial condition, operations and prospects; the relative attractiveness of alternative business and investment opportunities; and other future developments.

Except as set forth above, the Reporting Persons have no present plans or intentions which would result in or relate to any of the transactions described in subparagraphs (a) through (j) of Item 4 of Schedule 13D.

Page 16 of 21 Pages

ITEM 5. INTEREST IN SECURITIES OF THE ISSUER.

(a), (b). As of the close of business on July 10, 2009, the Reporting Persons owned directly and/or indirectly the following shares:


Name of Investor	Number of Total Shares			*Percentage of Outstanding Shares()**
TCV VI		1,131,772(**	)		2.79	%
TCV VII		1,741,528(**	)		4.30	%
TCV VII(A)		904,417(**	)		2.23	%
Member Fund		25,353(**	)		0.06	%
Management VI		1,140,921(**	)		2.81	%
Management VII		2,645,945(**	)		6.53	%
TCM VII		2,662,149(**	)		6.57	%
Mr. Hoag		3,803,070(**	)		9.38	%
Mr. Kimball		3,803,070(**	)		9.38	%
Mr. Drew		3,803,070(**	)		9.38	%
Mr. Reynolds		3,803,070(**	)		9.38	%
Mr. Griffith		3,803,070(**	)		9.38	%
Mr. Trudeau		3,803,070(**	)		9.38	%
Mr. Marshall		2,662,149(**	)		6.57	%


(*)		all percentages in this table are based on 40,536,615 shares of Common Stock of the Company outstanding as of May 8, 2009, as reported on the Company’s Form 10-Q as filed with the Securities and Exchange Commission on May 11, 2009.

(**)		Certain Reporting Persons disclaim beneficial ownership as set forth below.

Each of the Purchasers has the sole power to dispose or direct the disposition of the shares which it holds directly, and has the sole power to vote or direct the vote of such shares.

Management VI, as the general partner of TCV VI and a general partner of the Member Fund, may also be deemed to have the sole power to dispose or direct the disposition of the shares held by TCV VI and certain of the shares held by Member Fund and have the sole power to direct the vote of such shares. Management VI disclaims beneficial ownership of the securities owned by TCV VI and Member Fund except to the extent of its pecuniary interest therein.

The Management VI Members are Class A Members of Management VI. Under the operating agreement of Management VI, the Class A Members have the shared power to dispose or direct the disposition of the shares held by TCV VI and certain of the shares held by Member Fund and have the shared power to direct the vote of such shares. Each of the Management VI Members disclaims beneficial ownership of the securities owned by Management VI, TCV VI and Member Fund except to the extent of their respective pecuniary interest therein.

TCM VII, as the ultimate general partner of TCV VII and TCV VII(A) and a general partner of the Member Fund, and Management VII, as the direct general partner of TCV VII and TCV VII(A), may also be deemed to have the sole power to dispose or direct the disposition of the shares held by TCV VII and TCV VII(A) and, with respect to TCM VII, certain of the shares held by Member Fund and have the sole power to direct the vote of such shares. Each of TCM VII and Management VII disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein.

The TCM VII Directors are Class A Directors of TCM VII. Under the memorandum and articles of association of TCM VII, the Class A Directors have the shared power to dispose or direct the disposition of the shares held by TCV VII and TCV VII(A) and certain of the shares held by Member Fund and the shared power to direct the vote of such shares. Each of the TCM VII Directors disclaims beneficial ownership of the securities owned by TCM VII, Management VII, TCV VII, TCV VII(A) and Member Fund except to the extent of their respective pecuniary interest therein.

The Reporting Persons may be deemed to be acting as a group in relation to their respective holdings in the Company but do not affirm the existence of any such group.

Except as set forth in this Item 5(a) — (b), each of the Reporting Persons disclaims beneficial ownership of any Common Stock owned beneficially or of record by any other Reporting Person.

(c). Except as set forth herein, none of the Reporting Persons have effected any transaction in the Company stock during the past 60 days.

(d). Except as set forth herein, no other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Common Stock.

(e). Not applicable.

ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER.

Page 17 of 21 Pages

Except as set forth herein, none of the Reporting Persons has any contracts, arrangements, understandings or relationships (legal or otherwise) with any person with respect to any securities of Company, including but not limited to any contracts, arrangements, understandings or relationships concerning the transfer or voting of such securities, finder’s fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or losses, or the giving or withholding of proxies.

ITEM 7. MATERIAL TO BE FILED AS EXHIBITS.


Exhibit 1		Joint Filing Agreement.

Exhibit 2		Statement Appointing Designated Filer and Authorized Signatories dated July 10, 2009.

Page 18 of 21 Pages

SIGNATURE

After reasonable inquiry and to the best of each of the undersigned’s knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: July 10, 2009


TCV VI, L.P.
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

TCV VII, L.P.
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

TCV VII (A), L.P.
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

TCV MEMBER FUND, L.P.
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

TECHNOLOGY CROSSOVER MANAGEMENT VI, L.L.C.
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

TECHNOLOGY CROSSOVER MANAGEMENT VII, L.P.
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

TECHNOLOGY CROSSOVER MANAGEMENT VII, LTD.
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

JAY C. HOAG
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

RICHARD H. KIMBALL
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

JOHN L. DREW
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

Page 19 of 21 Pages


JON Q. REYNOLDS, JR.
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

WILLIAM J.G. GRIFFITH IV
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

ROBERT W. TRUDEAU
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

CHRISTOPHER P. MARSHALL
By:	/s/ Carla S. Newell
	Name:	Carla S. Newell
	Its: Authorized Signatory

Page 20 of 21 Pages

EXHIBIT INDEX


Exhibit 1		Joint Filing Agreement

Exhibit 2		Statement Appointing Designated Filer and Authorized Signatories dated July 10, 2009

Page 21 of 21 Pages