IGM Biosciences, Inc. (NASDAQ:IGMS – Get Free Report) was the target of a large increase in short interest in the month of March. As of March 15th, there was short interest totalling 4,760,000 shares, an increase of 5.5% from the February 29th total of 4,510,000 shares. Based on an average daily volume of 291,100 shares, […]