Shares of Prothena Corp PLC (NASDAQ:PRTA) were the recipient of a large increase in short interest in the month of January. As of March 14th, there was short interest totaling 824,645 shares, an increase of 35.0% from the February 28th total of 610,797 shares, AnalystRatingsNetwork.com reports. Prothena Corporation PLC (NASDAQ:PRTA) stock performance was -13.98% in last session and finished the day at $29.60. Traded volume … Continue reading Biotech bearish stocks: Prothena Corporation (NASDAQ:PRTA), Oncomed Pharmaceuticals (NASDAQ:OMED), Enanta Pharmaceuticals (NASDAQ:ENTA), Vanda Pharmaceuticals (NASDAQ:VNDA)