Stock Market Today, Sept. 1: Stocks Slide and Oil Surges Amid U.S.-Iran Tension

U.S. stock markets declined on September 1, 2026, as rising crude oil prices and Treasury yields pressured equities following escalating U.S.-Iran tensions. The S&P 500 fell 0.71%, the Dow dropped 0.79%, and the Nasdaq declined 1.03%, with technology stocks leading the selloff. Growth stocks underperformed value stocks, while oil surged 5%.