CBOT® Mini-Sized Dow<SUP>sm</SUP> 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

CBOT®Mini-Sized Dow^sm 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 The Chicago Board of Trade (CBOT) announced today that its $5 mini-sized Dow Jones^sm 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.

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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.