Mersana Therapeutics, Inc. (NASDAQ:MRSN – Get Free Report) saw a significant decline in short interest during the month of December. As of December 15th, there was short interest totalling 8,460,000 shares, a decline of 28.7% from the November 30th total of 11,870,000 shares. Based on an average daily volume of 1,990,000 shares, the short-interest ratio […]