The Next Decade's Uncertain Stock Market: Why History May Not Be a Guide The past century has been kind to American investors, with the S&P 500 delivering an impressive 10. 1% annual return since 1926.
However, some experts warn that this trend may be about to reverse. Research Affiliates' chief investment officer Que Nguyen believes the index's annualized return could drop to just over 3% in the next decade.
The problem lies with the market's increasing concentration among its top performers. Stocks like Alphabet, Amazon, Apple, Meta, Microsoft, Nvidia, and Tesla account for nearly 35% of the S&P 500.