Healthcare Active Movers; Pfizer Inc. (NYSE:PFE), Novavax (NASDAQ:NVAX), Arena Pharmaceuticals (NASDAQ:ARNA), MannKind Corporation (NASDAQ:MNKD)

Pfizer Inc (NYSE:PFE) was the target of a large growth in short interest in the month of May. As of May 15th, there was short interest totalling 59,856,772 shares, a growth of 14.0% from the April 30th total of 52,494,773 shares, StockRatingsNetwork.com reports. Currently, 0.9% of the shares of the company are sold short. Pfizer…

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Gilead Sciences GILD NASDAQ:GILD

Biotech GAiners: BioCryst Pharmaceuticals (NASDAQ:BCRX), Dyax Corp. (NASDAQ:DYAX), Novavax, Inc. (NASDAQ:NVAX), Merrimack Pharmaceuticals Inc (NASDAQ:MACK)

BioCryst Pharmaceuticals, Inc. (NASDAQ:BCRX) shares closed up nearly 11% on Tuesday after the company reported positive data from its OPuS-1 mid-stage study involving BCX4161 as a treatment for hereditary angioedema, or HAE. This is a rare immune disorder that can cause swelling of the face, breathing airways, and also causes abdominal cramping. According to the…

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