Onyx Pharmaceuticals, Inc. (ONXX), Amgen, Inc. (AMGN), Alexion Pharmaceuticals, Inc. (ALXN): Biotech's Falling Fortunes Stymie Osiris Therapeutics, Inc. (OSIR)'s Huge Week
Biotech's the biggest boom-or-bust business on the market, with regulatory approvals and clinical trial results routinely sending stocks hurtling up or down by significant amounts.
