Wall Street rises as earnings offset AI stock swings

U.S. stock indexes rose Thursday, with the S&P 500 gaining 0.3% and the Dow jumping 556 points, despite continued volatility in AI stocks. Strong corporate earnings reports led the market closer to record highs. Marsh & McLennan rallied 4.6%, Kimberly-Clark climbed 4.7%, and Bank of New York Mellon rose 3.2% after beating profit expectations. Earlier, AI stock sell-offs hit global markets, with South Korea's Kospi falling 7.6% and Japan's Nikkei 225 dropping 4.9%. Nvidia fell 1.8% but recovered from a 3.8% morning loss, while the 10-year Treasury yield sank to 5.09% from 5.19%. The Kospi has dropped 39% since June, though European indexes strengthened, with London's FTSE 100 rallying 1.1%.