NEW YORK (AP) — U.S. stock indexes muscled higher Thursday, led by companies delivering bigger profits. They pulled closer to their records even as stocks in the artificial-intelligence industry kept swinging on worries about how much longer their boom will last.

The S&P 500 rose 0.3% after erasing an early-morning loss and pulled closer to its all-time high set last week. The Dow Jones Industrial Average jumped 556 points, or 1.1%, while the Nasdaq composite added 0.1%.