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Global Market Insights

Oil Prices Plunge 4.5% as US-Iran Peace Deal Reopens Strait of Hormuz, June 15

June 15, 2026
08:41 PM
3 min read

Key Points

US-Iran peace deal announced June 14, Strait of Hormuz reopens June 19.

Brent crude fell 4.5% to $82.84 per barrel, down from $126 peak.

Japan Nikkei 225 surged 5.5%, South Korea Kospi jumped 5.7%.

Oil unlikely to return to pre-war $70 level for months despite deal.

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The United States and Iran announced a framework deal on June 14 to end their 100-day war, with both sides agreeing to reopen the Strait of Hormuz on June 19. Oil prices fell 4.5% to $82.84 per barrel as markets priced in restored energy supplies. The deal matters to investors because it ends the worst energy crisis in decades, reducing inflation pressure and boosting stock markets across Asia.

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How Markets Reacted to the Peace Announcement

Stock markets surged across Asia on the news. Japan’s Nikkei 225 climbed 5.5%, South Korea’s Kospi jumped 5.7%, and Australia’s ASX200 rose 1.5%. US stock futures also gained, with S&P 500 futures up 1% and Nasdaq Composite futures up 1.8%. The rally reflects relief that the energy crisis will ease, reducing inflation risks that central banks have feared since the war began in February.

Why Oil Prices Fell So Fast

Brent crude, the global oil benchmark, dropped to $82.84 per barrel from $126 at the peak of the war. The Strait of Hormuz has been closed since late February, blocking 20% of the world’s oil and liquefied natural gas supplies. Trump announced the strait would reopen toll-free on Friday, June 19, after the signing ceremony in Geneva. Analysts at ANZ noted that the fall in oil prices will provide relief for central banks worried about inflation.

What Remains Uncertain

The full text of the memorandum of understanding has not been released. Analysts warn that a lack of detail on what has been agreed could inject uncertainty into the market. A return to pre-crisis oil prices remains months away because the strait will reopen gradually for mine removal, and negotiations between the US and Iran continue for 60 days. Energy experts say oil is unlikely to fall to pre-war levels of $70 per barrel quickly.

What This Means for Consumers and Investors

UK petrol prices peaked at 159.53 pence per litre during the war. With oil falling, fuel costs should decline at the pump over the coming weeks. For investors, the deal removes a major source of economic uncertainty. Analysts expect lower energy costs to ease inflation pressure, which may influence the US Federal Reserve’s interest rate decision this week. Stock markets are pricing in a gradual recovery as supply normalizes.

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Final Thoughts

Oil fell 4.5% to $82.84 on the US-Iran peace deal, and Asian stocks surged 1.5% to 5.7%. The Strait of Hormuz reopens June 19, ending a 100-day energy crisis that disrupted global markets. Investors should watch for details on the final agreement and the pace of supply recovery.

FAQs

When does the Strait of Hormuz officially reopen?

The Strait of Hormuz reopens June 19, 2026, following the US-Iran deal signed in Geneva. Mine removal will take approximately seven days.

How much did oil prices fall after the deal?

Brent crude fell 4.5% to $82.84 per barrel, down from a peak of $126 during the conflict and $70 before it started.

Which stock markets gained the most?

Japan’s Nikkei 225 rose 5.5%, South Korea’s Kospi jumped 5.7%, and Australia’s ASX200 climbed 1.5% on June 15.

Disclaimer:

The content shared by Meyka AI PTY LTD is solely for research and informational purposes.  Meyka is not a financial advisory service, and the information provided should not be considered investment or trading advice.

About Author

Author

Huzaifa Zahoor

Co Founder

Huzaifa Zahoor is the engineer who built Meyka. He has spent years writing Python, training AI models, and building data pipelines specifically for financial markets. His technical articles have reached over 30,000 readers on Medium, so he knows how to make complex things easy to follow. If this article touches on how the tools work, he is the person who actually built them.

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