Stock Market Today: S&P 500, Nasdaq set records as market awaits Fed decision

This live blog is refreshed periodically throughout the day with the latest updates from the market. To find the latest Stock Market Today threads, click here. Happy Monday. This is TheStreet's Stock Market Today for Sept. 15, 2025. You can follow the latest updates on the market here, our daily live blog. Update: 4:01 p.m. ET Market Close: Onwards and Upwards Ahead of Fed Rate Decision Equities set new highs today ahead of the start of the Fed's highly-anticipated FOMC meeting tomorrow. The Nasdaq (+0.9 ...