AmpliTech Group, Inc. (NASDAQ:AMPGW – Get Free Report) saw a significant decrease in short interest during the month of May. As of May 15th, there was short interest totalling 6,700 shares, a decrease of 5.6% from the April 30th total of 7,100 shares. Based on an average daily volume of 2,200 shares, the short-interest ratio […]