Gilead Sciences Leads In Rising Short Interest Among Biotechs

Among leading biotech and emerging pharmaceutical companies, the number of shares sold short in Alexion Pharmaceuticals (NASDAQ: ALXN ), BioMarin Pharmaceutical (NASDAQ: BMRN ) and Gilead Sciences (NASDAQ: GILD ) grew by the largest percentages in late October. Biogen Idec (NASDAQ: BIIB ), Illumina (NASDAQ: