CME Announces Regular Quarterly Revision of Price Limits and Bands for Stock Index Products

CHICAGO, March 31 /PRNewswire-FirstCall/ -- Regular quarterly revisions of price limits and bands for stock index futures and options traded on Chicago Mercantile Exchange Inc. (CME) become effective with the first GLOBEX^® electronic trading session of the second quarter of 2004 which began at 3:30 p.m. (Central time) March 31, 2004. The circuit breaker price levels for the second quarter of 2004 will be:

                                                                  2x No
    Contracts                       5%     10%     15%      20%    Bust    25%
                                  Limit   Limit   Limit    Limit   Band   Band
    S&P 500(R) & E-mini(TM)       55.00  110.00  165.00   220.00  12.00    na
    MidCap 400(TM) & E-mini       27.00   55.00   82.00   110.00   6.00    na
    S&P/BARRA Growth(TM)          27.00   55.00   82.00   110.00   8.00    na
    S&P/BARRA Value(TM)           27.00   55.00   82.00   110.00   8.00    na
    Russell 1000(R)               30.00   60.00   90.00   120.00   6.00    na
    Russell 2000(R) & E-mini      27.00   55.00   82.00   110.00   6.00    na
    NASDAQ-100(R) & E-mini        70.00  140.00  210.00   280.00  40.00    na
    E-mini NASDAQ Composite(R)    95.00  190.00  285.00   380.00  40.00    na
    LMC TRAKRS(SM)                  na      na      na       na     na    8.70
    LS Tech TRAKRS(SM)              na      na      na       na     na    9.30
    LS Tech TRAKRS II(SM)           na      na      na       na     na    5.15
    Select 50 TRAKRS(SM)            na      na      na       na     na    7.60
    Commodity TRAKRS(SM)            na      na      na       na     na    7.60
    Euro TRAKRS(SM)                 na      na      na       na     na    6.95
    Gold TRAKRS(SM)                 na      na      na       na     na    6.05
    S&P 500 Financial
     SPCTR(TM)                    19.00   38.00   57.00    76.00   6.00    na
    S&P 500 Technology
     (Telecom/IT) SPCTR(TM)       11.00   22.00   33.00    44.00   6.00    na
    S&P Smallcap 600(TM)          14.00   28.00   42.00    56.00   6.00    na

Additional information about the application of price limits is available on the CME Web site at http://www.cme.com/products/index/products_index_pricelimitguide.cfm .

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 $39.5 billion in collateral deposits at Jan. 31, 2004. 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, the globe logo and GLOBEX are registered trademarks of Chicago Mercantile Exchange Inc. E-mini is a trademark of CME. S&P, S&P 500, NASDAQ-100, S&P/BARRA Growth, S&P/BARRA Value, S&P MidCap 400, S&P SmallCap 600, S&P/TOPIX 150, Russell 1000, Russell 2000, TRAKRS, Total Return Asset Contracts and other trade names, service marks, trademarks and registered trademarks that are not proprietary to Chicago Mercantile Exchange Inc. are the property of their respective owners, and are used herein under license. Further information about CME and its products is available on the CME Web site at www.cme.com .

SOURCE Chicago Mercantile Exchange Inc.

CONTACT: Media, Anita S. Liskey, +1-312-466-4613, or John Holden, +1-312-930-3446, news@cme.com , or Investors, John Peschier, +1-312-930-8491, all of Chicago Mercantile Exchange Inc. Web site: http://www.cme.com http://www.cme.com/products/index/products_index_pricelimitguide.cfm

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: Statements in this press release regarding Chicago Mercantile Exchange's business which are not historical facts are "forward-looking statements" that involve risks and uncertainties. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements, see "Risk Factors" in the Company's Annual Report or Form 10-K for the most recently ended fiscal year.