(NEW YORK)Shares of some top biotechnology companies are down at noon: Amgen fell $3.95 or 7.9 percent, to $46.31.READ MORE

(NEW YORK)Shares of some top biotechnology companies are mixed at 10 a.m.: Amgen fell $1.82 or 3.6 percent, to $48.45.READ MORE

(NEW YORK)Analysts on Friday brushed off Biogen Idec Inc.'s decision to abandon development of an experimental arthritis drug, saying it had not even been included in models for future reven...READ MORE

(NEW YORK)Shares of some top biotechnology companies were down at the close of trading: Amgen fell $1.86 or 3.6 percent, to $50.26.READ MORE

(CAMBRIDGE, Mass.)Biotech drug maker Biogen Idec said Thursday it has abandoned development of an experimental arthritis drug after it missed several goals in a mid-stage study.READ MORE

(NEW YORK)Shares of some top biotechnology companies are up at noon: Amgen rose $.83 or 1.6 percent, to $52.95.READ MORE

(NEW YORK)Shares of some top biotechnology companies are mixed at 10 a.m.: Amgen fell $.12 or .2 percent, to $52.01.READ MORE