Mondo Visione Worldwide Financial Markets Intelligence

FTSE Mondo Visione Exchanges Index:

OneChicago Open Interest Tops 1.5 Million, YTD Volume Surpasses 5 Million

Date 08/12/2005

OneChicago, LLC today reported that open interest set a new record of 1,511,016 contracts, topping the 1.5-million mark for the first time. Open interest is the total number of contracts that have not yet been offset or taken to delivery.

Year-to-date volume is now 5,177,091 contracts, 189% ahead of the same period in 2004.

OneChicago President Marty Doyle said, “Our open interest today is more than five times the level we were at a year ago. And as we wind up the year, we are close to tripling our 2004 volume total. OneChicago has taken huge strides in 2005 and I expect our momentum to strengthen in 2006.”

Each single stock futures contract is equivalent to 100 shares of the underlying stock or exchange-traded fund.

The Exchange lists 209 futures on single stocks, including futures on the DIAMONDS® Trust, as well as four OneChicago Select Indexes, a new series of customer-designed narrow-based security index futures launched this summer.

OneChicago is a joint venture of the Chicago Board Options Exchange Incorporated® (CBOE®), Chicago Mercantile Exchange Inc. (CME) and the Chicago Board of Trade (CBOT®). All products are electronically traded on the CBOEdirect® match engine and accessible through the CBOEdirect and GLOBEX® platforms. Security futures can be traded out of either securities or futures accounts. For more information about OneChicago and its products, please access the OneChicago Web site at www.OneChicago.com.

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