US stock market today: S&P 500 sets fresh record, Dow climbs — but Nasdaq drops as traders rotate. Here are the stocks gaining big

At 10:03 a.m. ET, the Investors continued to watch yields, chip-sector swings, and December economic releases as the market entered the final month of 2025. Overall, trading showed a mix of caution and optimism, reflecting a market balancing solid gains with lingering economic questions.How are the major U.S. indexes moving today?U.S. stock market opened steady on Tuesday, with major indexes posting mild moves as investors tracked economic data and sector rotation. Trading stayed active across tech, energy ...