Gratomic Inc. (OTCMKTS:CBULF – Get Rating) saw a significant increase in short interest during the month of April. As of April 15th, there was short interest totalling 33,100 shares, an increase of 259.8% from the March 31st total of 9,200 shares. Based on an average daily trading volume, of 27,000 shares, the short-interest ratio is […]