ManTech International Co. (NASDAQ:MANT) saw a large decrease in short interest in November. As of November 15th, there was short interest totalling 329,800 shares, a decrease of 19.5% from the October 31st total of 409,700 shares. Currently, 1.2% of the company’s stock are short sold. Based on an average daily trading volume, of 128,200 shares, the days-to-cover ratio is presently 2.6 days.