Psychemedics Co. (NASDAQ:PMD – Get Rating) saw a large decline in short interest in the month of March. As of March 31st, there was short interest totalling 12,200 shares, a decline of 19.2% from the March 15th total of 15,100 shares. Based on an average daily trading volume, of 5,300 shares, the days-to-cover ratio is […]