ACM Research, Inc. (NASDAQ:ACMR – Get Free Report) was the target of a significant increase in short interest in December. As of December 15th, there was short interest totalling 3,240,000 shares, an increase of 13.3% from the November 30th total of 2,860,000 shares. Based on an average daily volume of 1,175,100 shares, the days-to-cover ratio […]