First Trust Nasdaq Oil & Gas ETF (NASDAQ:FTXN - Get Rating) was the target of a large decline in short interest in the month of October. As of October 31st, there was short interest totalling 171,700 shares, a decline of 8.8% from the October 15th total of 188,200 shares. Based on an average daily volume of 215,300 shares, the days-to-cover ratio is currently 0.8 days.