Generac Holdings Inc. (NYSE:GNRC – Get Free Report) saw a large growth in short interest in the month of April. As of April 30th, there was short interest totalling 3,250,000 shares, a growth of 6.2% from the April 15th total of 3,060,000 shares. Based on an average trading volume of 1,230,000 shares, the short-interest ratio […]