BlackRock MuniVest Fund II, Inc. (NYSE:MVT) saw a large increase in short interest in the month of November. As of November 15th, there was short interest totalling 4,200 shares, an increase of 27.3% from the October 31st total of 3,300 shares. Based on an average trading volume of 25,600 shares, the short-interest ratio is presently […]