Navidea Biopharmaceuticals, Inc. (NYSE:NAVB – Free Report) was the recipient of a large drop in short interest during the month of June. As of June 15th, there was short interest totalling 570,200 shares, a drop of 35.3% from the May 31st total of 881,100 shares. Currently, 4.5% of the company’s shares are short sold. Based […]