Sumco Co. (OTCMKTS:SUMCF – Get Rating) was the recipient of a large decrease in short interest in the month of May. As of May 15th, there was short interest totalling 1,480,900 shares, a decrease of 18.3% from the April 30th total of 1,812,100 shares. Based on an average daily volume of 100 shares, the short-interest […]