YS Biopharma Co., Ltd. (NASDAQ:YS – Get Free Report) saw a significant drop in short interest in the month of September. As of September 15th, there was short interest totalling 98,300 shares, a drop of 86.1% from the August 31st total of 706,300 shares. Based on an average trading volume of 922,700 shares, the days-to-cover […]