GDI Integrated Facility Services Inc. (OTCMKTS:GDIFF – Get Rating) was the target of a large increase in short interest in May. As of May 15th, there was short interest totalling 86,600 shares, an increase of 22.8% from the April 30th total of 70,500 shares. Based on an average trading volume of 300 shares, the days-to-cover […]