CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated March 25, 2010 relating to the consolidated financial statements, which appears in Cowen Group, Inc.'s Annual Report on Form 10-K for the year ended December 31, 2009. We also consent to the reference to us under the heading "Experts" in such Registration Statement.
/s/ PricewaterhouseCoopers LLP
New York, New York
December 2, 2010
