US stocks: S&P 500 ends higher as CoreWeave results fuel AI optimism

US stock markets closed higher on Wednesday, driven by strong AI infrastructure company earnings. Mild inflation data reinforced expectations that the Federal Reserve will hold interest rates steady. CoreWeave and other AI firms reported upbeat quarterly results, boosting their stock prices. Data center operators and chipmakers also saw gains following positive company forecasts. Traders now anticipate a 62% chance of the Fed maintaining current interest rates next month.