 Cowen Inc NASDAQ:COWN was the target of a significant increase in short interest in April. As of April 15th, there was short interest totalling 2,960,000 shares, an increase of 11.3 from the March 31st total of 2,660,000 shares. Approximately 11.2 of the companys stock are sold short. Based on an average trading volume of 372,800 ... 