 Deluxe Co. NYSE:DLX was the recipient of a large drop in short interest in the month of March. As of March 31st, there was short interest totalling 2,580,000 shares, a drop of 22.2 from the March 15th total of 3,315,500 shares. Based on an average daily trading volume, of 439,600 shares, the short-interest ratio is ... 