The Philadelphia Stock Exchange Announces September Volume
"PHLX equity option volume for September rose 39.04% over same year-ago period"

PHILADELPHIA – October 4, 2007 - The Philadelphia Stock Exchange (PHLX) announced today that equity option volume in September jumped 39.04% when 28,901,559 contracts traded compared to the same year-ago period when 20,786,135 contracts traded. Volume was up 50.52% year-to-date.. Equity option volume in September was down 22.48% compared to the previous month when 37,284,364 contracts traded.

Average daily volume in September for equity options reached 1,521,135 contracts.
PHLX market share in September was 15.81%. Market share without ex-dividend volume was 14.10%.

Equity volume for September skyrocketed 194.16% when 142,715,588 shares traded compared to the same year-ago period when 48,516,901 shares traded. Equity volume for September decreased 25.06% compared the previous month when 190,449,326 shares traded. Year-to-date equity volume increased 99.01%.

Volume on the six newly traded World Currency Options (WCOs) rose 49.22% in September when 236,633 contracts traded compared to 158,576 contracts traded during the previous month.
WCOs ended September with an open interest of 282,592 contracts.

Trading volume in the customized and standardized currency options for September totaled 1,706 contracts, a decrease of 68.98% compared to the previous month when 5,499 contracts traded. Volume in September decreased 80.90% compared to the same year-ago period when 8,930 contracts traded.

Sectors index options volume for September decreased 61.15% when 273,121 contracts traded compared to the previous month when 702,976 contracts traded. Volume in sectors index options in September declined 52.42% compared to same year-ago period when 574,025 contracts traded.

PHLX currently lists options on 17 sectors, among them are: KBW Bank Index (BKX^SM); KBW Mortgage Finance Index (MFX^SM); KBW Regional Banking Index (KRX^SM); PHLX Drug Sector^SM (RXS^SM); PHLX Gold/Silver Sector^SM (XAU^SM); PHLX Oil Service Sector^SM (OSX^SM); PHLX Defense Sector^SM (DFX^SM); TheStreet.com Internet Sector (DOT^SM); PHLX Semiconductor Sector^SM (SOX^SM); PHLX Utility Sector^SM (UTY^SM); PHLX Housing Sector^SM (HGX^SM); SIG Coal Producers Index™ (SCP^SM); SIG Oil & Exploration Index™ (EPX^SM); and the SIG Steel Producers Index™ (STQ^SM); and Hapoalim American Israeli Index™ (HAI).

The Philadelphia Stock Exchange was founded in 1790. The PHLX trades more than 7,000 stocks, 2,520 equity options, 17 sectors index options, options on all major currencies, and futures through its subsidiary, The Philadelphia Board of Trade (PBOT). For more information about the PHLX and its products, visit www.phlx.com.

SIG Investment Managers Index™ is a trademark of Susquehanna Indices, LLP.
SMQ^SM is a service mark of the Philadelphia Stock Exchange.The PHLX trades iShares FTSE/Xinhua China 25 Index Fund (FXI^SM). This is the first time investors in the United States and abroad are able to track the performance of the largest and most widely traded Chinese stocks by mirroring the FTSE/Xinhua China 25 Index, which captures the top Chinese stocks available to international investors by total market capitalization.SIG Casino Gaming Index, SIG Semiconductor Capital Equipment Index™ and SIG Semiconductor Device™ Index are trademarks of SIG Indices, LLLP. SGVSM, SEZ^SM and SDL^SM are service marks of the Philadelphia Stock Exchange, Inc.