 Five Prime Therapeutics Inc NASDAQ:FPRX was the recipient of a significant decrease in short interest in March. As of March 31st, there was short interest totalling 1,270,000 shares, a decrease of 10.7 from the March 15th total of 1,422,400 shares. Based on an average daily volume of 426,600 shares, the short-interest ratio is presently 3.0 ... 