Stock market today: Dow, S&P 500, Nasdaq slide after Trump orders Hormuz blockade against Iran

US stocks traded lower on Monday after President Trump ordered a US blockade of the Strait of Hormuz following the collapse of US-Iran negotiations.

The Dow Jones Industrial Average (^DJI) fell roughly 0.5%, while the S&P 500 (^GSPC) and tech-heavy Nasdaq Composite (^IXIC) dropped by 0.2% as a surge in oil prices revived concerns about inflationary pressure and potential drag on global growth.

Trump's move to block all maritime traffic through the Strait of Hormuz escalated already high tensions in the Middle East. That has piled on even more risk for markets whose hopes for a cessation in hostilities were dented by the breakdown in negotiations in Islamabad.

Daily Market Coverage Apr. 13, 2026 9AM-11AM (ET) | Yahoo Finance

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