 International Bancshares Corp NASDAQ:IBOC saw a significant growth in short interest in March. As of March 13th, there was short interest totalling 918,100 shares, a growth of 9.4 from the February 27th total of 839,000 shares. Based on an average daily trading volume, of 280,900 shares, the short-interest ratio is presently 3.3 days. Approximately 1.7 ... 