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Cowen Group, Inc. Announces Fourth Quarter and Full-Year 2010 Earnings Conference Call

NEW YORK, Feb 25, 2011 (BUSINESS WIRE) —

Cowen Group, Inc. (NASDAQ: COWN) will host a conference call on March 4,
2011 at 9:00 AM Eastern Time to discuss the Company’s financial results
for the fourth quarter and full-year of 2010.

Investors can participate in the conference call by dialing
1-800-901-5259 domestic or 1-617-786-4514 international. The passcode
for the call is 10527701.

For your convenience, the conference call can be replayed in its
entirety beginning at 12:00 PM Eastern Time on March 4, 2011 through
March 11, 2011. If you wish to listen to the replay of this conference
call, please dial 1-888-286-8010 domestic or 1-617-801-6888
international and enter passcode 39659626.

The conference call will also be broadcast live through a link on the
Investor Relations page on the Cowen Web site at
Please go to the Web site at least 15 minutes prior to the call to
register, download and install any necessary audio software. A replay of
the broadcast will be available on the Investor Relations page of the
Cowen Web site.

About Cowen Group, Inc.

Cowen Group, Inc. is a diversified financial services firm and, together
with its consolidated subsidiaries, provides alternative investment
management, investment banking, research, and sales and trading services
through its two business segments: Ramius and its affiliates makes up
the Company’s alternative investment management segment, while Cowen and
Company is its broker-dealer segment. Its alternative investment
management products and services include hedge funds, alternative
solutions (including replication) products, managed futures funds, fund
of funds, real estate, health care royalty funds, commodity funds and
cash management services. Cowen and Company offers industry focused
investment banking for growth-oriented companies, domain
knowledge-driven research and a sales and trading platform for
institutional investors. Founded in 1918, the firm is headquartered in
New York and has offices located in major financial centers around the

SOURCE: Cowen Group, Inc.

Cowen Group, Inc.
Steve Lasota, 1-646-562-1000
Chief Financial Officer