THE PHILADELPHIA STOCK EXCHANGE TO BEGIN TRADING ONE NEW OPTION ON AUGUST 25

PHILADELPHIA — August 24, 2005 The Philadelphia Stock Exchange (PHLX) announced today that it will begin trading one new option beginning August 25. The option was allocated to LaBranche Structured Products, LLC.

WorldSpace, Inc. (option/stock symbol: QZW/WRSP) will trade on the March expiration cycle with initial expiration months September, October, December, and March. Position and exercise limits have been set at 50,000 contracts.

The Philadelphia Stock Exchange was founded in 1790. The PHLX trades 2,000 stocks, 1,703 equity options, 25 sectors index options and currency options and futures. For more information about the PHLX and its products, visit www.phlx.com