US stock market crash today: The S&P 500 erased all of its intraday gains on Tuesday, June 9, 2026, plunging more than 2% from its session high and wiping out approximately $1.3 trillion in market value in just two hours. What started as a cautiously optimistic morning for Wall Street turned into a sharp, disorderly retreat by midday, driven by a sudden collapse in chip stocks, a reversal in Magnificent Seven momentum, and fresh anxieties around inflation data due the following day. The speed of the decline was jarring — not because markets haven't seen drops before, but because this one arrived without a single headline catalyst, which is often the most unsettling kind of selloff on Wall Street.
The S&P 500 settled around 7,263, down 1.92% on the day, while the Nasdaq Composite fell 3.18% to 25,105. The Dow Jones Industrial Average declined a comparatively modest 0.96% to 50,299, cushioned by defensive names. The real damage was concentrated in technology, where the DJ Technology index dropped 4.45% and the Philadelphia Semiconductor Index — the most closely watched barometer of chip health — cratered 7.54%, erasing nearly all of Monday's recovery. The S&P 500 VIX surged 20.67% to 22.83, signaling that institutional investors were rapidly repricing risk across the board.
