THE PHILADELPHIA STOCK EXCHANGE TO BEGIN TRADING EIGHT NEW OPTIONS

PHILADELPHIA — April 29, 2005 — The Philadelphia Stock Exchange (PHLX) announced today that it will begin trading eight new options on May 2, 2005.

Connetics Corp (option/stock symbol: UXU/CNCT) was allocated to McGowan Investment Group. It will trade on the January expiration cycle with initial expiration months May, June, July and October. Position and exercise limits have been set at 250,000 contracts.

Landstar System Inc (option/stock symbol: QRY/LSTR) was allocated to McGowan Investment Group. It will trade on the January expiration cycle with initial expiration months May, June, July and October. Position and exercise limits have been set at 75,000 contracts.

Pilgrim's Pride Corp (option/stock symbol: PPC) was allocated to McGowan Investment Group. It will trade on the March expiration cycle with initial expiration months May, June, September and December. Position and exercise limits have been set at 75,000 contracts.

Praxair Inc (option/stock symbol: PX) was allocated to McGowan Investment Group. It will trade on the January expiration cycle with initial expiration months May, June, July and October. Position and exercise limits have been set at 250,000 contracts.

Shopping.com Ltd (option/stock symbol: QSK/SHOP) was allocated to McGowan Investment Group. It will trade on the March expiration cycle with initial expiration months May, June, September, December and January. Position and exercise limits have been set at 75,000 contracts.

Silver Standard Resources Inc (option/stock symbol: IZU/SSRI) was allocated to McGowan Investment Group. It will trade on the March expiration cycle with initial expiration months May, June, September and December. Position and exercise limits have been set at 200,000 contracts.

Stamps.com Inc (option/stock symbol: JXQ/STMP) was allocated to McGowan Investment Group. It will trade on the February expiration cycle with initial expiration months May, June, August and November. Position and exercise limits have been set at 75,000 contracts.

USEC Inc (option/stock symbol: USU) was allocated to McGowan Investment Group. It will trade on the January expiration cycle with initial expiration months May, June, July and October. Position and exercise limits have been set at 250,000 contracts.

The Philadelphia Stock Exchange was founded in 1790. The PHLX trades 2,000 stocks, 1,650 equity options, 22 sectors index options and currency options and futures. For more information about the PHLX and its products, visit www.phlx.com