News Release

2005 CME Global FX Summit Comes to London in May

Thu May 12 2005

CHICAGO, April 20, 2005 - CME, the largest U.S. futures exchange and the world’s largest regulated marketplace for foreign exchange (FX), today announced that it will host its first Global FX Summit in Europe on Thursday, May 12, 2005. The half-day summit, which will be held at Ironmongers Hall, will feature FX industry leaders including: Mark Spanbroek - Director of Strategic Development, Getco LLC Francesca Taylor - Principal, Taylor Associates and author of Mastering Foreign Exchange and Currency Options Cyril Cottu - Vice President, Co-Head of FX Asset Sales, Europe, Goldman Sachs Colin Lambert - Editor, Profit & Loss magazine “The enthusiastic response we received from the CME Global FX Summit in Chicago demonstrated that there is growing interest in FX futures, which is further supported by the fact that CME FX accounts for an ever-increasing market share of the overall FX market,” said Rick Sears, Managing Director and head of CME foreign exchange product group. “Given the importance of London in the FX world, we are pleased to be hosting our first summit outside of Chicago there. We believe this summit will provide anyone - from the novice FX investor to the experienced trader - with valuable insight into the FX market and a deeper understanding of the benefits of CME’s exchange model.” The summit will begin at 3:00 p.m. with a one-hour educational seminar geared to those who are new to FX trading. After a keynote speaker, two concurrent sessions will follow, one designed for the proprietary firms, trading arcades and individuals, moderated by Keith Andrew, Executive Director, FX, Morgan Stanley, which will cover trading platforms, cash markets, futures and options. David Allanson, Risk Manager, TT International Investment Management, will lead a session for hedge funds, CTAs and investment managers that will examine electronic platforms, trading strategies and risk management issues. The event will conclude with a roundtable discussion followed by a 6:30-8:00 p.m. cocktail reception. The CME Global FX Summit is free and open to all interested participants. It will be held at Ironmongers Hall, Shaftsbury Place off Aldersgate Street, near Barbican, St. Paul’s and Moorgate Underground Stations. Additional information and online registration is available at http://www.cme.com/fxsummitlondon or by contacting Nicholas Reynoldson on +44 (0) 20-7623-2550 or Ray McKenzie at +1-312-454-5301. CME offers the largest regulated FX derivatives trading complex in the world, providing users with liquid, transparent markets, guaranteed execution and central counterparty clearing risk management on 36 individual FX futures and 23 options on futures products. CME received FX Week’s 2004 eFX award for the best electronic futures platform. For first quarter 2005, CME FX averaged a record 294,000 contracts per day, representing a notional value of $37.6 billion, approximately 75 percent of which was traded electronically on the CME® Globex® electronic trading platform. Last year, over 51 million FX contracts with a notional value of over $6.2 trillion traded at CME. 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 CME Globex® electronic trading platform and on its trading floor. CME offers futures and options on futures primarily in four product areas: interest rates, stock indexes, foreign exchange and commodities. The exchange moved about $1.42 billion per day in settlement payments and managed $44.3 billion in collateral deposits as of March 31, 2005, including $3.99 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. Statements in this news release that are not historical facts are forward-looking statements. These statements are not guarantees of future performance and involve risks, uncertainties and assumptions that are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or implied in any forward-looking statements. More detailed information about factors that may affect our performance may be found in our filings with the Securities and Exchange Commission, including our most recent annualreport on Form 10-K, which can be obtained at its Web site at www.sec.gov. We undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise. Chicago Mercantile Exchange, CME, the globe logo and CME Globex are registered trademarks of Chicago Mercantile Exchange Inc. E-mini is a trademark of CME. CLEARING 21 is a registered trademark of CME and New York Mercantile Exchange, Inc. 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