 FLIR Systems, Inc. NASDAQ:FLIR saw a large increase in short interest in July. As of July 31st, there was short interest totalling 2,370,000 shares, an increase of 9.7 from the July 15th total of 2,160,000 shares. Based on an average trading volume of 1,680,000 shares, the days-to-cover ratio is presently 1.4 days. Approximately 1.8 of ... 