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.

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."

U.S. stocks are recoiling on worries that good news on the job market may prove to be bad for Wall Street by keeping inflation and interest rates high.

A soft finish to 2024 still left stocks with a second straight stellar year. The S&P 500 logged a 23.3% gain, which follows a 24% rise in 2023. The combined gains of more than 53% was the largest two-year percentage jump for the index since year-end 1998,

Drops for Nvidia and other superstar stocks are dragging U.S. indexes lower and keeping Wall Street stuck in its weekslong rut. The S&P 500 fell 0.8% early Monday. The index is coming off its fourth losing week in the last five.