Sumco Co. (OTCMKTS:SUOPY – Get Rating) saw a significant decrease in short interest in May. As of May 31st, there was short interest totalling 2,000 shares, a decrease of 33.3% from the May 15th total of 3,000 shares. Based on an average trading volume of 2,100 shares, the days-to-cover ratio is presently 1.0 days. Sumco […]