New York, Sept 29, 2008 – GFI Group Inc. (GFIG on NASDAQ) and Prism Valuation Inc, a provider of valuation and risk management services, have signed a multi-year agreement for Prism to use GFI credit derivatives data in its valuation services.

Greg Cripps, president and ceo of Prism Valuation Inc. said, “We are very happy to be using GFI data. We firmly believe that GFI’s high-quality, truly representative, independent data is key to providing effective structured product valuation services.” “GFI’s credit market data, sourced from CreditMatch, GFI’s award-winning electronic trading platform, reflects real market prices, where counterparties are prepared to commit capital, rather than consensus or aggregated data,” said Philip Winstone, global head of data sales at GFI. “We believe our partnership with Prism Valuation cements GFI data as a vital ingredient in determining the value of credit derivative positions.”

For more on GFI’s market data go to www.gfigroup.com/marketdata.

GFI Group is consistently named top credit derivatives inter-dealer broker in Risk magazine’s annual rankings. For more on Prism Valuation Inc. go to www.prismvaluation.com

About GFI Group Inc.

GFI Group Inc. (www.GFIgroup.com) is a leading inter-dealer broker specializing in over-the-counter derivatives products and related securities. GFI Group Inc. provides brokerage services, market data and trading platform and analytics software to institutional clients in markets for a range of credit, financial, equity and commodity instruments. Headquartered in New York, GFI was founded in 1987 and employs more than 1,700 people with additional offices in London, Paris, Tel Aviv, Dublin, Dubai, Hong Kong, Shanghai, Tokyo, Singapore, Sydney, Seoul, Cape Town, Calgary, Englewood (NJ), and Sugar Land (TX). GFI provides services and products to over 2,200 institutional clients, including leading investment and commercial banks, corporations, insurance companies and hedge funds. Its brands include GFI™, GFInet®, CreditMatch®, GFI ForexMatch®, EnergyMatch®, GFI FENICS®, GFI FENICS® FX, GFI FENICS™ Enterprise, Starsupply®, Amerex® and Trayport®.

Forward-looking statement

Certain matters discussed in this press release contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. When used in this press release, the words “anticipate,” “believe,” “estimate,” “may,” “might,” “intend,” “expect” and similar expressions identify such forward-looking statements. Actual results, performance or achievements could differ materially from those contemplated, expressed or implied by the forward-looking statements contained herein. These forward-looking statements are based largely on the expectations of the Company and are subject to a number of risks and uncertainties. These include, but are not limited to, risks and uncertainties associated with: economic, political and market factors affecting trading volumes; securities prices or demand for the Company’s brokerage services; competition from current and new competitors; the Company’s ability to attract and retain key personnel, including highly-qualified brokerage personnel; the Company’s ability to identify and develop new products and markets; changes in laws and regulations governing the Company’s business and operations or permissible activities; the Company’s ability to manage its international operations; financial difficulties experienced by the Company’s customers or key participants in the markets in which the Company focuses its brokerage services; the Company’s ability to keep up with technological changes; and uncertainties relating to litigation. Further information about factors that could affect the Company’s financial and other results is included in the Company’s filings with the Securities and Exchange Commission. The Company does not undertake to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

CAT= DA, CR

Alan Bright
PR Manager
GFI Group Inc.
+ 44 (0)20 7877 8049
alan.bright@gfigroup.co.uk