POWER OF ATTORNEY

The undersigned, Steven Vigliotti, does hereby make,
constitute and appoint P. Mats Goebels, Angelo Bulone,
Angelique DeSanto, Benjamin Reynolds, Peter Tucker,
and Peter Henry, and each of them, true and lawful
attorneys-in-fact and agents with full power of
substitution and resubstitution, in any and all
capacities, to execute for and on behalf of the
undersigned the reports and filings required under
Section 16 of the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), and the rules promulgated
thereunder (the "Section 16 Reports"), in connection with
transactions by, and beneficial ownership of, the
undersigned in securities issued by Investment Technology
Group, Inc. (the "Company"), and the Form 144 required
under Rule 144 of the Securities Act of 1933, as amended
(the "Securities Act"), in connection with any sales by
the undersigned of securities issued by the Company, and
any other documents and instruments incidental to any of
the foregoing, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do
and perform each and every act and thing that said
attorneys-in-fact and agents, and each of them, deem
advisable or necessary, including filing the Section 16
Reports, the Forms 144, and amendments thereto with the
Securities and Exchange Commission, and the undersigned
does hereby fully ratify and confirm all that said
attorneys-in-fact and agents, or any of them, or their
or his or her substitute or substitutes, shall do or
cause to be done by virtue hereof.

The undersigned acknowledges that the foregoing attorneys-
in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming,
any of the undersigned's responsibilities to comply with
Section 16 of the Exchange Act or Rule 144 of the Securities
Act.

This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file the Forms
144 or the Section 16 Reports with respect to the undersigned's
holdings of, and transactions in, securities issued by the
Company, unless earlier revoked by the undersigned in a signed
writing delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has subscribed his name,
this 26th day of January, 2010.




___/s/Steven Vigliotti____
Steven Vigliotti