Pacific Exchange to Trade Five New Options

Market Wire, July, 2005

The Pacific Exchange (PCX) announced that on Tuesday, July 26, 2005, it will begin trading options on Aspreva Pharmaceutical Corp. (PCX: ASPV); BP Prudhoe Bay Royalty Trust (BPT); ElkCorp (PCX: ELK); Universal Forest Products, Inc. (PCX: UFPI); and ViroPharma, Inc. (PCX: VPHM).

Aspreva Pharmaceutical options will trade on the January expiration cycle with exercise limits set at 2,500,000 shares.

BP Prudhoe Bay options will trade on the March expiration cycle with exercise limits set at 5,000,000 shares.

ElkCorp options will trade on the January expiration cycle with exercise limits set at 5,000,000 shares.

Universal Forest Products options will trade on the January expiration cycle with exercise limits set at 2,500,000 shares.

ViroPharma options will trade on the February expiration cycle with exercise limits set at 20,000,000 shares.

All five issues will be traded by lead market makers Ross Goodheart, Ken Keating, and Bartev Vartanian of Group One Trading, LP.

Contact: Dale A. Carlson 415/393-4198 Email Contact