 SandRidge Permian Trust NYSE:PER was the recipient of a significant decline in short interest in June. As of June 15th, there was short interest totalling 468,500 shares, a decline of 14.8 from the May 31st total of 550,100 shares. Based on an average daily volume of 316,600 shares, the short-interest ratio is currently 1.5 days. ... 