 Enterprise Bancorp, Inc NASDAQ:EBTC was the target of a large decrease in short interest in March. As of March 31st, there was short interest totalling 31,400 shares, a decrease of 22.7 from the March 15th total of 40,600 shares. Based on an average daily trading volume, of 14,700 shares, the short-interest ratio is presently 2.1 ... 