News Release

CBOT Mini-Sized Dow Futures Set Daily Volume Record

Thu May 25 2006

For Immediate Release

Media Contact:
Craig Grabiner
(312) 341-5758
news@cbot.com

CBOT®MINI-SIZED DOWsm FUTURES SET DAILY VOLUME RECORD AS TOTAL SURPASSES 200,000 CONTRACTS FOR THE FIRST TIME
Exchange Also Sets Volume Records in Equity Futures Complex as Total Exchange Open Interest Reaches New High Mark

CHICAGO, IL, May 25, 2006 – The Chicago Board of Trade (CBOT) announced today that its $5 mini-sized Dow Jonessm futures contract set a record on Wednesday, as volume climbed to 218,495 contracts at the close of trading.  The previous record, 195,084 contracts, was set on May 17, 2006.  The Exchange also set a record for total Exchange-wide open interest.  The new open interest record, 17,230,667 contracts, tops the previous record of 17,188,794 contracts set the day before.

The new high mark for the mini-sized Dow contract fueled a daily volume record in the Exchange’s Equity Index complex, with 232,565 futures and options contracts traded yesterday.  The prior record, 213,245 contracts, was set on May 17, 2006.  The CBOT Equity Index complex includes $5, $10 and $25 Dow Jones futures contracts as well as $5 and $10 Dow Jones options on futures contracts.

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

About the CBOT

As one of the leading global derivatives exchanges, the Chicago Board of Trade provides a diverse mix of financial, equity and commodity futures and options-on-futures products. Building on its 158-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 www.cbot.com.

Forward Looking Statements

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