Short Interest Swings in Biotech Stocks (BIIB, CELG, VVUS)

The short interest in biotech and emerging pharmaceutical companies was mixed again in the final two weeks of November. Shares sold short in Alexion Pharmaceuticals (NASDAQ: ALXN ), Illumina (NASDAQ: ILMN ) and Regeneron Pharmaceuticals (NASDAQ: REGN ) grew somewhat between the November 15 and November