 Eidos Therapeutics Inc NASDAQ:EIDX saw a significant decrease in short interest during the month of March. As of March 31st, there was short interest totalling 1,940,000 shares, a decrease of 7.3 from the March 15th total of 2,093,600 shares. Based on an average daily volume of 128,000 shares, the days-to-cover ratio is presently 15.2 days. ... 