Suncor Energy Inc. (NYSE:SU - Get Free Report) (TSE:SU) was the recipient of a significant growth in short interest in March. As of March 31st, there was short interest totaling 7,301,394 shares, a growth of 19.0% from the March 15th total of 6,133,106 shares. Based on an average daily trading volume, of 6,115,466 shares, the short-interest ratio is presently 1.2 days. Currently, 0.6% of the company's stock are sold short.