Rexahn Pharmaceuticals, Inc. (NYSE:RNN) saw a significant drop in short interest during the month of August. As of August 15th, there was short interest totalling 933,221 shares, a drop of 12.2% from the July 29th total of 1,063,316 shares. Based on an average trading volume of 373,339 shares, the days-to-cover ratio is presently 2.5 days. […]