David P. Prosperi Appointed Director of Public Relations For Chicago Mercantile Exchange

Chicago Mercantile Exchange Inc. today announced the appointment of David P. Prosperi as Director of Public Relations. Prosperi fills a key leadership role in CME's newly created Marketing and Public Relations Division announced in October 2003. In his new position, Prosperi will oversee CME's communications, and corporate and public relations functions. CME is currently recruiting for a Chief Marketing Officer, to whom Prosperi will report.

"David has an exceptionally strong communications background and a deep understanding of our industry and business," said Craig Donohue, CME Chief Executive Officer. "His experience and knowledge will help us build an even stronger brand and image, while promoting CME's successful execution of our growth strategy."

Prosperi joined CME after working for 13 years at the Chicago Board of Trade (CBOT), most recently as Senior Vice President, Corporate Communications. Before joining the CBOT, Prosperi had a distinguished career in public service and government relations. He served as Assistant Secretary of Transportation for Public Affairs from 1989-90, and as Campaign Press Secretary for then Senator Dan Quayle during the 1988 presidential election. Afterwards, Prosperi served as a spokesman for the Office of the President-elect. He also held senior communications positions at the U.S. Department of the Interior from 1985-88 and the U.S. Department of Energy in 1985. Prosperi worked as Manager, Government Affairs, for the Superior Oil Company in Washington, D.C. from 1982-85, and as Assistant White House Press Secretary to President Ronald Reagan from 1981-82.

Prosperi earned a bachelor's degree in business administration from the University of Illinois in 1975 and a master's degree in business administration from The George Washington University in 1983.

Chicago Mercantile Exchange Inc. (www.cme.com) is the largest futures exchange in the United States. As an international marketplace, CME brings together buyers and sellers on its trading floors and GLOBEX® electronic trading platform. CME offers futures and options on futures primarily in four product areas: interest rates, stock indexes, foreign exchange and commodities. The exchange moved about $1.4 billion per day in settlement payments in 2003 and managed $37.6 billion in collateral deposits at Dec. 31, 2003, including $1.5 billion in deposits for non-CME products. CME is a wholly owned subsidiary of Chicago Mercantile Exchange Holdings Inc. (NYSE: CME), which is part of the Russell 1000® Index.

Chicago Mercantile Exchange, CME and GLOBEX are registered trademarks of Chicago Mercantile Exchange Inc. E-mini is a trademark of CME.