ProShares UltraShort Yen (NYSEARCA:YCS – Get Free Report) saw a significant drop in short interest during the month of May. As of May 29th, there was short interest totaling 13,830 shares, a drop of 56.6% from the May 14th total of 31,846 shares. Based on an average daily volume of 15,302 shares, the short-interest ratio is presently 0.9 days. Currently, 2.5% of the company’s stock are short sold. Shares of NYSEARCA YCS traded up $0.51 during midday trading on Friday, reaching $54.77.