On May 21, 2025, U.S. stock markets experienced a sharp decline, with the Dow Jones Industrial Average falling 1.69%, the S&P 500 dropping 1.22%, and the Nasdaq Composite decreasing by 1.04%. This marked the Dow's worst trading day in a month. Market analysts and financial news outlets noted the sudden market slide but did not specify the exact causes in the available information. The event prompted widespread surprise and concern among investors and observers.