The Philadelphia Stock Exchange Announces Exercise Of Warrants By Strategic Investors

The Philadelphia Stock Exchange announced today that pursuant to the investments made by Citadel Derivatives Group LLC and Merrill Lynch in June 2005, and Citigroup, Credit Suisse First Boston, Morgan Stanley and UBS in August 2005, each firm has met its specified performance requirement and has exercised in full its respective warrant to acquire additional shares of PHLX. As a result of this exercise, the six strategic investors now hold 89.4% of the total outstanding shares of PHLX.