U.S. stock indexes drifted lower Thursday following a mixed set of earnings reports from Morgan Stanley, UnitedHealth Group and other big companies. The S&P 500 slipped 0.2% after flipping between small gains and losses through the day.

BMO Capital Markets forecasts the S&P 500 will reach 6,700, reflecting a gain of 13.2%. Chief investment strategist Brian Belski said he and his team "remain resolutely bullish," but expect "performance and fundamentals will more closely match the historical norms -- namely, in the high-single digit/low-double-digit percentage range in 2025."

Nvidia Corp.’s $3 trillion run-up in market value in the two years since ChatGPT helped trigger an AI frenzy is bigger than any stock rally in history in such a short time span. But the landscape is now changing for the chipmaker.