MPX International Co. (OTCMKTS:MPXOF – Get Rating) saw a large increase in short interest in May. As of May 15th, there was short interest totalling 17,000 shares, an increase of 2,328.6% from the April 30th total of 700 shares. Based on an average trading volume of 79,700 shares, the days-to-cover ratio is presently 0.2 days. […]