U.S. stocks tumbled on March 5, 2026, amid Middle East tensions and rising oil prices.

U.S. stock markets plunged as the Dow Jones Industrial Average dropped 908 points, or 1.8%, while the S&P 500 and Nasdaq Composite fell 1% and 0.9%, respectively. The sell-off was driven by escalating tensions in the Middle East involving Iran and rising oil prices, sparking investor anxiety over geopolitical risks and potential economic disruptions. Markets remained volatile, with ongoing developments expected to influence trading in the days ahead.