Trump’s Strait of Hormuz Blockade Shocks Markets, Sends Oil Prices Surging
Global financial markets faced significant volatility on Monday as President Donald Trump announced the reinstatement of a blockade on Iranian shipping through the Strait of Hormuz. The move, which follows a weekend of heavy airstrikes between the United States and Iran, prompted an immediate spike in crude oil prices and triggered a sell-off across major U.S. stock indices.
Escalation in the Strait of Hormuz
The Strait of Hormuz, a critical waterway for the transport of crude oil from the Persian Gulf, has become the center of a deepening geopolitical crisis. President Trump announced the blockade via a post on Truth Social, stating, “We are reinstating the THE IRANIAN BLOCKADE, so named because it is only stopping Iran’s ships or customers from entering or leaving.” Beyond the transit restrictions, the President also called for a 20% payment on all cargo passing through the strait to reimburse the United States for providing security in the region. The blockade has effectively kept many oil tankers from delivering crude to international customers, leading to supply concerns. Brent crude, the international standard, surged by more than 9% in a single day—marking its largest one-day gain since 2020—to settle at $83.30 per barrel.
For more on this story, see Trump’s Strait of Hormuz Blockade Sends U.S. Stocks Plunging.
Wall Street Reacts to Geopolitical Tensions
The combination of spiking energy costs and broader market anxiety led to a retreat on Wall Street. Technology stocks, particularly those in the artificial intelligence sector, bore the brunt of the selling pressure. Chipmakers faced sharp declines, with the Philadelphia SE Semiconductor Index underperforming as shares of Intel, Marvell Technology, and SanDisk dropped between 6.1% and 12.6%. Additionally, U.S.-listed shares of the South Korean chipmaker SK Hynix fell 9.3% following their recent Nasdaq debut. While tech stocks suffered, the energy sector provided a partial cushion for the Dow, as energy companies benefited from the restricted traffic and rising prices of crude oil.
This follows our earlier report, US and Iran Reach Peace Deal; Trump Lifts Strait of Hormuz Blockade.
Global Market Volatility and Bond Yields
The impact of the blockade rippled through international markets. In Asia, stock indexes saw sharp swings; the Kospi in South Korea dropped 8.9%, while Japan’s Nikkei 225 fell 1.9% and Shanghai stocks declined 2.1%. Investors also moved away from government bonds as fears intensified that higher oil prices could keep inflation elevated. Similar trends were observed globally, with 10-year yields in major Asia-Pacific markets adding 5–8 basis points. In Europe, 10-year government bond yields rose by 4–5 basis points, and U.K. gilts hit their highest levels since May.

Economic Outlook and Upcoming Data
Market participants are now bracing for an eventful week, with significant focus placed on the potential economic fallout of the U.S.-Iran conflict. Federal Reserve Chair Kevin Warsh is scheduled to provide his first semiannual testimony before Congress on Tuesday and Wednesday, where he is expected to face questions regarding the inflationary effects of the war and the central bank’s monetary policy path. Investors are also awaiting critical economic data, including consumer and producer price indices, which will offer a clearer picture of how the geopolitical tensions affected price growth in June. Simultaneously, the market is entering the unofficial start of the second-quarter earnings season. Major financial institutions, including JPMorgan Chase, Goldman Sachs, Bank of America, Citigroup, and Wells Fargo, are scheduled to report results.
Read also: Trump: US to Control Strait of Hormuz and Charge 20% Cargo Fee.
Find more reporting in our Business section.
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