Gorman-Rupp Co (NYSE:GRC) saw a large decline in short interest in the month of December. As of December 15th, there was short interest totalling 538,613 shares, a decline of 1.9% from the November 30th total of 548,812 shares, Market Beat.com reports. Based on an average trading volume of 44,924 shares, the days-to-cover ratio is presently […]