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Options Industry Sets New Daily Volume Record Surpassing 23.7 Million Contracts On Thursday, August 16

CHICAGO, August 17, 2007 - The Options Clearing Corporation (OCC) announced that a new daily trading volume record was set on Thursday, August 16, 2007 when 23,745,650 contracts were traded, 11 percent higher than the previous record of 21,313,025 contracts set on July 26, 2007.

Equity options trading set a new record with 20,238,343 contracts, a 7 percent increase over the previous record of 18,946,472 contracts on July 26, 2007. Open interest peaked at 309,214,202 contracts, also claiming a new record.

Thursday's volume marks the third record trading day in the past four weeks, a period that has seen eight of the 10 highest trading volume days. Average daily trading volume in August now stands at 15.6 million contracts, more than double the average daily volume of 6.9 million contracts in August 2006.

Another first at OCC was achieved Thursday when more than 1 million options transactions were processed.

About OCC

OCC, founded in 1973, is the world's largest derivatives clearing organization and was the first clearinghouse to receive a 'AAA' credit rating from Standard & Poor's Corporation. Operating under the jurisdiction of the Securities and Exchange Commission and the Commodity Futures Trading Commission, OCC provides clearing and settlement services for the American Stock Exchange, the Boston Options Exchange, Chicago Board Options Exchange, CBOE Futures Exchange, International Securities Exchange, OneChicago, NYSE Arca, Philadelphia Stock Exchange and Philadelphia Board of Trade. More information about OCC is available through its Web site at