Opsens Inc. (OTCMKTS:OPSSF – Get Free Report) saw a significant increase in short interest during the month of July. As of July 31st, there was short interest totalling 83,200 shares, an increase of 143.3% from the July 15th total of 34,200 shares. Based on an average daily volume of 35,000 shares, the days-to-cover ratio is […]