Analysts say the US stock market valuation index warns that the cyclical adjustment of price-earnings ratios and market capitalization as a share of GDP indicates that future returns will fall below trend levels, even if leading artificial intelligence companies such as Nvidia still support the stock index.

Analysts say the US stock market valuation index warns that the cyclical adjustment of price-earnings ratios and market capitalization as a share of GDP indicates that future returns will fall below trend levels, even if leading artificial intelligence companies such as Nvidia still support the stock index.