Tonix Pharmaceuticals Holding Corp. (NASDAQ:TNXP – Get Rating) saw a large increase in short interest in the month of May. As of May 15th, there was short interest totalling 638,800 shares, an increase of 167.6% from the April 30th total of 238,700 shares. Based on an average daily volume of 217,100 shares, the days-to-cover ratio […]