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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Investment Technology Group
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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M23014-P87668 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 Shareholder Meeting to Be Held on May 11, 2010 380 MADISON AVENUE NEW YORK, NY 10017 Meeting Information Meeting Type: Annual Meeting For holders as of: March 15, 2010 Date: May 11, 2010 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.

M23015-P87668 Vote In Person: Many shareholder 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 12-Digit Control Number 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. How To Vote Please Choose One of the Following Voting Methods Before You Vote How to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE: NOTICE AND PROXY STATEMENT ANNUAL REPORT ON FORM 10-K 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 April 27, 2010 to facilitate timely delivery. How to View Online: Have the 12-Digit Control Number available (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 12-Digit Control Number (located on the following page) in the subject line.

Voting Items 2. Ratification of the appointment of KPMG LLP as the independent auditors for the 2010 fiscal year. 3. Approval of an increase in the number of shares reserved and available for issuance under the Investment Technology Group, Inc. 2007 Omnibus Equity Compensation Plan. 01) J. William Burdett 02) Christopher V. Dodds 03) Robert C. Gasser 04) Timothy L. Jones 05) Kevin J.P. O’Hara 06) Maureen O’Hara 07) 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: M23016-P87668

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