Bridgewater’s Dalio Warns of AI Tech Stock Concentration, Urges Diversification

Bridgewater Associates founder Ray Dalio said the AI boom has allowed a handful of technology giants to dominate the stock market, leaving investors exposed to concentration risk even when they passively invest through market-cap-weighted indexes such as the S&P 500. Past technology cycles show that even winners such as Microsoft and Apple have suffered steep pullbacks. A technology’s success does not mean its stock is worth buying heavily at any price.

In an X post on the evening of June 15, 2026, Dalio recommended holding 15 high-quality, uncorrelated investments with balanced risk. Assuming an expected return of 6% and volatility of 18%, diversifying across 15 assets could reduce volatility to 5% and raise the return-to-risk ratio from 0.3 to 1.29. He also warned that real returns on U.S. equities could range from negative 5% to negative 10% over the next five to 10 years.