News Release

CBOT Futures Daily Open Interest Surpasses 10 Million Contracts

Wed May 02 2007

For Immediate Release

Media Contact:
Debbie Baratz
312-435-3625
news@cbot.com

CBOT FUTURES DAILY OPEN INTEREST SURPASSSES 10 MILLION CONTRACTS FOR THE FIRST TIME

CHICAGO, IL, May 2, 2007 – The Chicago Board of Trade (CBOT®) today announced that futures open interest reached a new daily record yesterday, as futures open interest surpassed 10 million contracts for the first time. The new record, 10,031,752 contracts, surpasses the previous high of 9,976,613 contracts.  

Open interest represents the number of trading positions that have not yet been offset and closed at the end of a trading day.  

For information on the CBOT and its products, please visit www.cbot.com.

About the CBOT

As one of the leading global derivative exchanges, the Chicago Board of Trade provides a diverse mix of financial, equity and commodity futures and options-on-futures products.  Building on its 159-year history, the CBOT continues to advance into the future using the strength of deep liquidity, market integrity and member-trader expertise.  Using superior trading technology in both electronic and open-auction trading platforms, the CBOT provides premier customer service to risk managers and investors worldwide.  For more information, visit our website at www.cbot.com.

Forward Looking Statements

Certain statements in this press release may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and includes any use of the words “may,” “should,” “could,” “expects,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “potential” or “continue.”  These statements are based on management’s current expectations and involve assumptions that may be subject to change or risks and uncertainties that could cause actual results to differ materially from those set forth in the statements.  Accordingly, actual outcomes and results may differ materially from what is expressed or implied in any forward-looking statement contained in this press release.  The factors that may affect our performance may be found in the Annual Report on Form 10-K and other periodic reports filed by CBOT Holdings, Inc. with the U.S. Securities and Exchange Commission (“SEC”).  These filings can be obtained at the SEC’s website 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.

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