Ampio Pharmaceuticals, Inc. (NYSEAMERICAN:AMPE – Get Rating) was the target of a significant drop in short interest in May. As of May 31st, there was short interest totalling 446,900 shares, a drop of 40.3% from the May 15th total of 748,600 shares. Currently, 3.2% of the company’s stock are sold short. Based on an average […]