The Coretec Group Inc. (OTCMKTS:CRTG – Get Rating) saw a significant drop in short interest in May. As of May 31st, there was short interest totalling 8,500 shares, a drop of 27.4% from the May 15th total of 11,700 shares. Based on an average daily trading volume, of 851,500 shares, the short-interest ratio is presently […]