Investment Technology Group Releases

January 2009 US Trading Statistics

NEW YORK, NY, February 9, 2009 — Investment Technology Group, Inc. (NYSE: ITG), a leading agency broker and financial technology firm, today announced that January 2009 US trading volume was 4.0 billion shares and average daily volume (ADV) was 202 million shares. This compares to 4.1 billion shares and ADV of 185 million shares in December 2008 and 5.2 billion shares and ADV of 245 million shares in January 2008.

There were 20 trading days in January 2009, 22 trading days in December 2008 and 21 trading days in January 2008.

Monthly volume statistics reflect commission-generating US volume. These statistics are preliminary and may be revised in subsequent updates and public filings. Volume statistics are posted on ITG’s website, www.itg.com, and are available via a downloadable spreadsheet file.

ITG US Trading Activity

Total US Shares	# of Trade Days	Total US Volume	Average US Daily Volume

January:	20	4,047,406,478	202,370,324

Year-to-Date:	20	4,047,406,478	202,370,324

About ITG

Investment Technology Group, Inc., is a specialized agency brokerage and financial technology firm that partners with asset managers globally to provide innovative solutions spanning the investment continuum. A leader in electronic trading since launching POSIT in 1987, ITG’s integrated approach now includes a range of products from portfolio management and pre-trade analysis to trade execution and post-trade evaluation. Asset managers rely on ITG’s independence, experience, and agility to help mitigate risk, improve performance and navigate increasingly complex markets. The firm is headquartered in New York with offices in North America, Europe and the Asia Pacific regions. For more information on ITG, please visit www.itg.com.

In addition to historical information, this press release may contain “forward-looking” statements, as defined in the Private Securities Litigation Reform Act of 1995, that reflect management’s expectations for the future. A variety of important factors could cause results to differ materially from such statements. These factors include the company’s ability to achieve expected future levels of sales; the actions of both current and potential new competitors; rapid changes in technology; financial market volatility; general economic conditions in the United States and elsewhere; evolving industry regulation; cash flows into or redemption from equity funds; effects of inflation; customer trading patterns; and new products and services. These and other risks are described in greater detail in the company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2007, and other documents filed with the Securities and Exchange Commission and available on the company’s web site.

ITG Contact:

Maureen Murphy

(212) 444-6323

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