Oil Prices Fluctuate as U.S. and Iran Exchange Strikes in Strait of Hormuz

Renewed hostilities between the U.S. and Iran in the Strait of Hormuz rattled energy markets this week, though the initial price shock has subsided as investors bet against a full-scale war. The tit-for-tat military exchanges highlight the persistent geopolitical risks surrounding one of the world's most critical oil chokepoints.

Tit-for-Tat Escalation

The conflict reignited on Tuesday with U.S. strikes against Iranian targets and the revocation of sanctions waivers on Iranian oil, which followed what the U.S. described as repeated attacks on shipping. According to Reuters, Tehran responded by striking U.S. bases in the region, leading to further exchanges on Wednesday and Thursday.

While U.S. President Donald Trump stated on Wednesday that a memorandum of understanding to end the conflict was "over," he later indicated he did not expect an all-out war. The measured market reaction suggests investors may be pricing in a return to negotiations rather than a wider conflict, though the situation remains tense.

Oil Market Impact

The immediate market response saw oil prices jump to a multi-week high on Wednesday before easing the following day. Brent crude remains below the $80 a barrel mark, a level it last surpassed on June 19, according to the report.

Supply logistics have been significantly impacted, with tanker traffic through the strait reportedly near a standstill on Thursday. This disruption complicates plans by OPEC+ to increase production quotas by 188,000 barrels per day.

Investors are now weighing two competing scenarios:

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• Supply Squeeze: A prolonged closure or disruption of the strait could tighten global oil supplies significantly.
• Potential Glut: If traffic resumes quickly, the market could face a supply glut as Gulf producers compete for market share amid signs of weakening global demand, a factor that has already led producers like Saudi Arabia to offer price discounts.

Broader Market Ripples

The geopolitical tensions extend beyond the Middle East. At a NATO summit, the U.S. pledged to grant Ukraine a license to manufacture Patriot missile interceptors. In a move linked by analysts to Ukrainian attacks on its energy infrastructure, Russia announced on Wednesday a ban on diesel exports to protect its domestic supply, a decision that could pressure the global diesel market.

Elsewhere, volatility persisted in global markets:

• Bonds: Japan's benchmark 10-year government bond yield hit a 30-year high on Thursday before retreating on Friday after officials signaled state pension funds would increase domestic investments.
• Semiconductors: The chip sector saw significant turbulence. Samsung Electronics shares fell despite reporting a 19-fold jump in second-quarter operating profit. In contrast, competitor SK Hynix saw its $26.5 billion U.S. share sale heavily oversubscribed ahead of its Nasdaq debut.

Looking ahead, investors will be closely watching next week's U.S. consumer price inflation data for June and the start of the corporate earnings season, with major banks including JPMorgan and Goldman Sachs set to report.