US stock market today: Dow, S&P 500, Nasdaq fall amid tech sell-off, Iran tensions

US stocks open lower as the Dow falls 521 points, while the S&P 500 and Nasdaq slip amid a tech sell-off and oil prices topping $100.

Oct 23, 2026 - 21:00
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US stock market today: Dow, S&P 500, Nasdaq fall amid tech sell-off, Iran tensions
US stocks open lower as the Dow falls 521 points, while the S&P 500 and Nasdaq slip amid a tech sell-off and oil prices topping $100.

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