 Oncolytics Biotech, Inc. NASDAQ:ONCY was the target of a significant decrease in short interest during the month of March. As of March 31st, there was short interest totalling 1,260,000 shares, a decrease of 7.6 from the March 15th total of 1,362,900 shares. Approximately 4.9 of the shares of the company are sold short. Based on ... 