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Oil Spikes 10%, Stocks Slide as Trump Blockades Iran and Taxes Hormuz Ships

Summarized from Forexlive

Trump reimposed an Iran blockade and slapped a 20% toll on Strait of Hormuz shipping, sending crude surging and stocks tumbling.

Oil just went parabolic. WTI crude ripped nearly 10% higher to $77.64 after Trump announced a full naval blockade of Iran and — here's the twist nobody saw coming — a 20% toll on every ship transiting the Strait of Hormuz. You want safe passage? Pay up. The move rattled global markets instantly and drew comparisons to the chaos of April.

Fresh US strikes on Iranian commercial ships accompanied the announcement, and Trump teased a primetime Thursday speech that traders are reading as groundwork for a longer campaign. That geopolitical shock wave hit equities hard: the S&P 500 dropped 0.8% and the Nasdaq got smacked down 1.7%, with chip names leading the carnage — Intel fell nearly 7% and Micron shed almost 5%.

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The dollar caught a double tailwind. Beyond the oil shock, Fed Governor Waller made his hawkish pivot official. He explicitly warned that another hot core inflation print this week would force the FOMC to "consider tightening monetary policy in the near term." Markets immediately priced a 40% chance of a July 29 rate hike — a number that was basically zero not long ago. Two-year Treasury yields hit their highest level since February 2025, before the Fed's three consecutive cuts.

USD/JPY grinded toward 162.50 before intervention fears put a cap on it. Gold, usually the geopolitical hedge of choice, actually dropped $121 to $3,998 — the rate-hike repricing clearly overwhelming the safe-haven bid. Bank earnings kick off tomorrow, and after a day like this, those results are going to matter even more than usual. Watch the tape closely — multiple markets closed at session extremes, which is rarely a calm signal.

Continue reading at Forexlive.

Frequently Asked Questions

Q.Why did oil prices spike so sharply today?

Trump reimposed a full naval blockade on Iran and announced a 20% toll on all goods transiting the Strait of Hormuz, while fresh US strikes targeted Iranian commercial ships. WTI crude surged nearly 10% to $77.64 on the news.

Q.What did Fed Governor Waller say about raising interest rates?

Waller said that if Tuesday's core inflation data comes in hot, the FOMC will need to consider tightening monetary policy in the near term. Markets responded by pricing a 40% probability of a rate hike at the July 29 meeting.

Q.How did stock markets react to the Iran blockade announcement?

The S&P 500 fell 0.8% and the Nasdaq dropped 1.7%, with chip stocks hit hardest — Intel fell nearly 7% and Micron lost roughly 5%. Multiple markets closed at their session extremes.

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