Stock Index Futures Trading Lower

September SP500 is trading at 2178.75, down 7.25. September Nasdaq 100 is trading at 4805.00, down 17.50 September Russell 2000 is trading at 1231.60, down 8.20. September Dow Industrial futures are trading at 18543,down 39. Stock index futures ae trading modestly choppy and just above the session lows. Market chatter about comments by Federal Reserve members and corporate news is making the rounds. The Federal Reserve's Federal Open Market Committee (FOMC) is scheduled to publish the minutes of July policy meeting Wednesday at 2:00 p.m. ET.