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Options Industry Sets New Daily Volume Record Surpassing 18.8 Million Contracts On Friday, July 20

CHICAGO, July 23, 2007 - The Options Clearing Corporation (OCC) announced that a new daily cleared volume record was set on Friday, July 20, 2007 when 18,788,070 contracts were cleared, surpassing the previous record of 18,281,667 contracts set on February 27, 2007

Equity options set a new record with 17,344,462 contracts, a 5.7 percent increase over the previous record of 16,397,163 contracts on February 27, 2007. Open interest stands at 295,155,733 contracts, also a new record (please note this number has been updated from the original version to reflect a correction in open interest reached on July 20)

"Our ability to successfully take on these new volume challenges is a result of OCC's diligent capacity planning and maintaining strict quality standards throughout every area of our operation," said Michael E. Cahill, OCC President and Chief Operating Officer.

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 www.optionsclearing.com.