 Nlight Inc NASDAQ:LASR was the target of a large growth in short interest in the month of March. As of March 13th, there was short interest totalling 2,487,400 shares, a growth of 5.8 from the February 27th total of 2,350,000 shares. Based on an average daily volume of 252,700 shares, the days-to-cover ratio is presently ... 