Héroux-Devtek Inc. (OTCMKTS:HERXF – Get Free Report) was the target of a large increase in short interest during the month of November. As of November 30th, there was short interest totalling 21,000 shares, an increase of 121.1% from the November 15th total of 9,500 shares. Based on an average trading volume of 400 shares, the […]