Stock Index Futures Little changed in Pre-Market

September SP500 is trading at 2173.75, up 0.25. September Nasdaq 100 is trading at 4780.00, down 2.25 September Russell 2000 is trading at 1240.00, up 0.60. September Dow Industrial futures are trading at 18446, down 2. Stock index futures are trading steady. Market talk about corporate news and chatter about possible comments later today from Federal Reserve Chair Janet Yellen is making the rounds. The Bureau of Economic Analysis is scheduled to release GDP data (gross domestic product) at 8:30 a.m. ET. University of Michigan consumer sentiment is due out at 10:00 a.m. ET.