iPath S&P GSCI Crude Oil Total Return (NYSE:OIL) was the target of a large increase in short interest during the month of July. As of July 31st, there was short interest totalling 3,340,902 shares, an increase of 122.3% from the July 15th total of 1,502,719 shares, AnalystRatings.NET reports. Based on an average trading volume of […]