ACM Research, Inc. (NASDAQ:ACMR – Get Free Report) saw a large increase in short interest in January. As of January 15th, there was short interest totalling 3,550,000 shares, an increase of 14.5% from the December 31st total of 3,100,000 shares. Based on an average trading volume of 1,190,000 shares, the short-interest ratio is currently 3.0 […]