Asterias Biotherapeutics (NYSEAMERICAN:AST) was the target of a large drop in short interest in the month of March. As of March 29th, there was short interest totalling 3,593,338 shares, a drop of 1.9% from the March 15th total of 3,661,754 shares. Based on an average daily volume of 317,536 shares, the days-to-cover ratio is presently […]