Pressure BioSciences, Inc. (OTCMKTS:PBIO – Get Rating) saw a large decline in short interest in May. As of May 31st, there was short interest totalling 1,400 shares, a decline of 39.1% from the May 15th total of 2,300 shares. Based on an average daily volume of 47,300 shares, the short-interest ratio is presently 0.0 days. […]