The Coretec Group Inc. (OTCMKTS:CRTG – Get Free Report) saw a large increase in short interest in March. As of March 15th, there was short interest totalling 47,700 shares, an increase of 9,440.0% from the February 29th total of 500 shares. Based on an average daily volume of 4,989,500 shares, the short-interest ratio is presently […]