Gratomic Inc. (OTCMKTS:CBULF – Get Rating) was the recipient of a large drop in short interest in April. As of April 30th, there was short interest totalling 35,600 shares, a drop of 82.2% from the April 15th total of 199,900 shares. Based on an average trading volume of 151,000 shares, the short-interest ratio is presently […]