Banco Santander-Chile (NYSE:BSAC) was the target of a large increase in short interest in the month of December. As of December 15th, there was short interest totalling 1,280,000 shares, an increase of 68.8% from the November 30th total of 758,200 shares. Currently, 0.3% of the shares of the company are sold short. Based on an average trading volume of 561,200 shares, the short-interest ratio is presently 2.3 days.