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Chicago Mercantile Exchange Holdings Inc. Completes Initial Public Offering

Date 11/12/2002

Chicago Mercantile Exchange Holdings Inc. (NYSE: CME) today announced the successful completion of its initial public offering. The over-allotment option was fully exercised. The company sold 3,712,660 shares of Class A common stock in the initial public offering. Shareholders of the company sold 1,751,070 shares. Net proceeds to the company from the offering are expected to be approximately $117.8 million.

Morgan Stanley was the book-running manager for the offering with UBS Warburg as joint-lead manager. Salomon Smith Barney, J.P. Morgan Securities and William Blair & Company were the co-managing underwriters.

This news release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.

Chicago Mercantile Exchange Holdings Inc. is the parent company of Chicago Mercantile Exchange Inc. (www.cme.com), the largest futures exchange in the United States based on notional value, trading volume and open interest. As an international marketplace, CME brings together buyers and sellers on its trading floors and GLOBEX around-the-clock electronic trading platform. CME offers futures contracts and options on futures primarily in four product areas: interest rates, stock indexes, foreign exchange and commodities. The exchange moves about $1.7 billion per day in settlement payments and manages $27.7 billion in collateral deposits.

The stock symbol "CME" was formerly used by Core Materials Corp. Core Materials Corp. has changed its name and symbol to Core Molding Technologies Inc. and CMT.