Actinium Pharmaceuticals Inc (NYSE:ATNM) was the recipient of a significant growth in short interest in the month of February. As of February 29th, there was short interest totalling 2,101,946 shares, a growth of 1.2% from the February 12th total of 2,076,163 shares, Analyst Ratings Net reports. Currently, 5.8% of the company’s shares are short sold. […]