 John Hancock Tax-Advantage Dvd Incom Fd. NYSE:HTD saw a significant growth in short interest during the month of March. As of March 13th, there was short interest totalling 40,300 shares, a growth of 168.7 from the February 27th total of 15,000 shares. Based on an average daily volume of 83,300 shares, the days-to-cover ratio is ... 