The Greenbrier Companies, Inc. (NYSE:GBX – Get Rating) was the target of a significant drop in short interest in the month of April. As of April 30th, there was short interest totalling 1,330,000 shares, a drop of 17.4% from the April 15th total of 1,610,000 shares. Approximately 4.3% of the company’s stock are sold short. […]