THE PHILADELPHIA STOCK EXCHANGE RETAINS GREENHILL & CO., INC. AS FINANCIAL ADVISOR

PHILADELPHIA – August 16, 2007 – The Philadelphia Stock Exchange (PHLX) announced today that it has engaged Greenhill & Co. to provide financial advisory services in connection with the exploration of strategic opportunities.

The Philadelphia Stock Exchange was founded in 1790. The PHLX trades more than 7,000 stocks, 2,502 equity options, 19 sectors index options and currency options. For more information about the PHLX and its products, visit www.phlx.com.