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CBOE To List Options On Chicago Mercantile Exchange Holdings Inc. (CME)

Date 30/05/2003

The Chicago Board Options Exchange (CBOE) today announced it will list options on Chicago Mercantile Exchange Holdings Inc. (NYSE and CBOE ticker symbol CME) beginning Monday, June 2, 2003.

Chicago Mercantile Exchange Holdings Inc., based in Chicago, IL, is the parent company of Chicago Mercantile Exchange Inc., the largest futures exchange in the United States based on notional value, trading volume and open interest. On December 6, 2002, CME Holdings became the first publicly traded U.S. financial exchange. As an international marketplace, CME brings together buyers and sellers on its trading floors and GLOBEX around-the-clock electronic trading platform.

"CBOE is the first U.S. exchange to list options on another exchange," said William Brodsky, CBOE Chairman and Chief Executive Officer. "We are especially pleased that this initial listing is for the Chicago Mercantile Exchange, our friend, neighbor and partner in One Chicago, our single stock futures joint venture exchange with the Chicago Board of Trade."

"CME was the first U.S. financial exchange to complete a successful IPO and list our stock on the New York Stock Exchange," said Terry Duffy, CME Chairman. "We are further pleased to be the first U.S. financial exchange to have options listed on our stock."

CME options will trade on the March expiration cycle, with introductory expirations in June, July, September and December. Initial strike prices have been set at 55, 60 and 65, with position limits of 22,500 contracts. The Designated Primary Market Maker (DPM) in the options will be named later.

For more information on new listings, visit the Trading Tools section of the CBOE website at: http://www.cboe.com/NewListings.

CBOE, regulated by the Securities and Exchange Commission (SEC), is the creator of listed options, and the world's largest options marketplace. For additional information about the CBOE and its products, access the CBOE website at www.cboe.com.