Pressure BioSciences, Inc. (OTCMKTS:PBIO – Get Free Report) was the recipient of a large growth in short interest in May. As of May 31st, there was short interest totalling 26,500 shares, a growth of 516.3% from the May 15th total of 4,300 shares. Based on an average daily volume of 66,900 shares, the days-to-cover ratio […]