Why is the US stock market down today? Dow Jones, S&P 500 and Nasdaq crash big as strong jobs report, rising Treasury yields and AI stock selloff shake Wall Street — here are today's biggest gainers and losers

Why is the stock market down today? A hotter-than-expected jobs report erased any lingering hope for near-term Federal Reserve rate cuts — and the US stock market is paying a steep price for that reality check. The Dow Jones fell more than 400 points, the S&P 500 lost 1.8%, and the Nasdaq tumbled nearly 3%. AI stocks led the decline, with Nvidia, Intel, Marvell, and Broadcom losing billions in market value.