Direxion Daily S&P 500 Bull 2X Shares (NYSEARCA:SPUU – Get Free Report) saw a significant decrease in short interest in May. As of May 29th, there was short interest totaling 9,139 shares, a decrease of 36.4% from the May 14th total of 14,370 shares. Based on an average trading volume of 15,307 shares, the short-interest [...]