UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     )
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o	Definitive Proxy Statement
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Investment Technology Group, Inc.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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M36122-P05293 You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. INVESTMENT TECHNOLOGY GROUP, INC. *** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Stockholder Meeting to Be Held on June 14, 2011. 380 MADISON AVENUE NEW YORK, NY 10017 Meeting Information Meeting Type: Annual Meeting For holders as of: April 18, 2011 Date: June 14, 2011 Time: 1:00 PM EDT Location: Investment Technology Group Company Offices 380 Madison Avenue New York, NY 10017 See the reverse side of this notice to obtain proxy materials and voting instructions.

M36123-P05293 How To Vote Please Choose One of the Following Voting Methods Vote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 31, 2011 to facilitate timely delivery. How to View Online: Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*: sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line. Before You Vote How to Access the Proxy Materials NOTICE AND PROXY STATEMENT FORM 10-K Proxy Materials Available to VIEW or RECEIVE: . XXXX XXXX XXXX . XXXX XXXX XXXX . XXXX XXXX XXXX

Voting Items M36124-P05293 2. Ratification of the appointment of KPMG LLP as the independent auditors for the 2011 fiscal year. 3. Advisory vote on executive compensation. 01) J. William Burdett 02) Minder Cheng 03) Christopher V. Dodds 04) Robert C. Gasser 05) Timothy L. Jones 06) Kevin J.P. O'Hara 07) Maureen O'Hara 08) Steven S. Wood 1. Election of Directors Nominees: The Board of Directors recommends that you vote FOR the following: The Board of Directors recommends you vote FOR the following proposals: 4. Advisory vote on frequency of advisory vote on executive compensation. The Board of Directors recommends you vote 1 year on the following proposal:

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