Stock futures fell Tuesday as a potential U.S. government shutdown loomed. Despite the latest declines, Wall Street was headed for an unusually strong September. Futures tied to the Dow Jones Industrial Average fell 109 points, or 0.2%. S&P futures slipped 0.2% along with Nasdaq-100…This story appeared on cnbc.com , 2025-09-30 10:19:18.095000.