Abiomed Inc. (NASDAQ:ABMD) was the recipient of a large increase in short interest during the month of July. As of July 15th, there was short interest totalling 3,115,836 shares, an increase of 21.6% from the June 30th total of 2,561,708 shares. Approximately 7.9% of the shares of the company are sold short. Based on an […]