Stock Market Today, Feb. 3: AI startup Anthropic blindsides software, tech stocks with big announcement

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 Tuesday. This is TheStreet’s Stock Market Today for Feb. 3, 2026. You can follow the latest updates on the market here in our daily live blog Update: 4:00 p.m. ET Closing Bell Time to wrap it up. The market is now closed. Though it was a rough day for the large cap indexes, things finished out in better shape than we saw intraday. The Nasdaq ...