GreenShift Co. (OTCMKTS:GERS – Get Rating) was the recipient of a significant increase in short interest in April. As of April 30th, there was short interest totalling 4,900 shares, an increase of 81.5% from the April 15th total of 2,700 shares. Based on an average daily volume of 18,800 shares, the days-to-cover ratio is currently […]