Harmonic Drive Systems Inc. (OTCMKTS:HSYDF – Get Rating) was the recipient of a significant decline in short interest in May. As of May 31st, there was short interest totalling 948,700 shares, a decline of 14.0% from the May 15th total of 1,103,400 shares. Based on an average trading volume of 0 shares, the days-to-cover ratio […]