Dow, S&P 500 and Nasdaq post worst month in 11 months — is the AI stock boom losing momentum? what investors need to know about the 2026 US stock market outlook

US stock market volatility story is no longer about unstoppable AI gains. It is about rotation, risk, and recalibration. As of February 27 at 11:20 AM ET, the Dow Jones Industrial Average fell 533 points to 48,965.90, down 1.08%. The S&P 500 slipped 40.84 points to 6,868.02, off 0.59%. The dropped 190.65 points to 22,687.73, down 0.83%. The Nasdaq is now on track for its worst month since March. The S&P 500 is nearly flat for the year. Here is a data point most investors overlook. The equal-weighted S&P 500 ...