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The Strait of Hormuz Is Closed, and Why That's a Huge Problem for the Price of Oil and the S&P 500

The Iran-U.S. conflict is already weighing on the markets, and things could get worse if it doesn't end soon.

Mar 13, 2026 &03001313202631; 18:00 UTC www.fool.com Trending 4/5

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Negative for markets

Sentiment score: -75/100

High impact Immediate effect (hours)

WHAT THIS MEANS

The closure of the Strait of Hormuz due to Iran-U.S. tensions is creating significant supply disruption concerns for global oil markets, with potential negative spillover effects on equity markets including the S&P 500. This geopolitical crisis threatens to drive oil prices higher and increase market volatility if the conflict escalates or persists.

AI CONFIDENCE

85% Very high

SENTIMENT GAUGE

NEWS POWER SCORE

AFFECTED ASSETS

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Oil (WTI Crude)

CL=FCommodity

Expected to rise

Strait of Hormuz closure restricts crude oil supply; approximately 20% of global oil passes through this chokepoint

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S&P 500

^GSPCIndex

Expected to decline

Higher energy costs reduce corporate profitability and increase inflation concerns, pressuring equity valuations

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Euro / US Dollar

EURUSDCurrency

High volatility expected

Geopolitical uncertainty typically strengthens safe-haven currencies; flight-to-safety dynamics may support USD

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Gold Futures

GC=FCommodity

Expected to rise

Gold benefits from geopolitical risk premium and safe-haven demand during conflict escalation

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10-Year Treasury Yield

^TNXBond

Expected to decline

Risk-off sentiment drives bond buying and lower yields as investors seek safety

PRICE HISTORY

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⚡ SUGGESTED ACTION

Consider defensive positioning: reduce equity exposure, increase energy hedges through commodities or energy sector puts, and establish long positions in safe-haven assets (gold, bonds, USD). Monitor Strait of Hormuz developments closely as any resolution could trigger sharp reversal trades.

KEY SIGNALS

Geopolitical risk premium emerging in commodity marketsSupply disruption in critical global energy infrastructurePotential stagflation scenario: higher energy costs + economic slowdownSafe-haven asset rotation underwayEscalation risk if conflict intensifies

SECTORS INVOLVED

EnergyTransportationUtilitiesFinancialsConsumer Discretionary

Analysis generated on Mar 16, 2026 at 13:40 UTC

Disclaimer: This analysis is generated by artificial intelligence for informational purposes only and does not constitute financial advice, investment recommendation, or solicitation. Original reporting by The Motley Fool. Always conduct your own research and consult a qualified financial advisor before making investment decisions.

The Strait of Hormuz Is Closed, and Why That's a Huge Problem for the Price of Oil and the S&P 500

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