What a week for biotechs: Drop into bear territory By: CNBC.com News September 25, 2015 at 15:33 PM EDT Biotechnology stocks deepened their rout Friday, as fears of drugs prices continued to mount. Read More >> Related Stocks: Amgen Biogen Idec Bluebird Bio Celgene Corp Gilead Sciences Intercept Pharmaceuticals Nasdaq Biotechnology Ishares ETF Seagen Inc