Stock Markets April 17, 2026 09:53 AM

U.S. energy shares slump as Iran says Strait of Hormuz fully reopened, Brent falls under $90

Declaration that commercial passage is “completely open” sends oil prices lower and reverses recent gains for major U.S. oil firms

By Derek Hwang CVX
U.S. energy shares slump as Iran says Strait of Hormuz fully reopened, Brent falls under $90
CVX

U.S. energy stocks tumbled after a social media post attributed to Iran's foreign minister declared the Strait of Hormuz fully open for commercial shipping. The announcement pushed Brent below $90 a barrel and erased part of the rally that had followed the temporary blockade of the waterway. Major U.S. oil companies posted notable declines as markets reacted to reduced disruption risk.

Key Points

  • Iran announced via a social media post attributed to Foreign Minister Seyed Abbas Araghchi that the Strait of Hormuz is "completely open" for commercial vessels, but traffic must follow a "coordinated route" set by Iran's maritime authorities.
  • Brent crude fell below $90 a barrel after the announcement, and major U.S. energy stocks dropped sharply - Chevron down ~4.5%, Exxon ~5%, Occidental ~6%, Valero nearly 7%.
  • The development reverses part of a prior rally in U.S. energy shares that had been driven by the earlier blockade of the strait and resulting tighter supplies for crude and energy fuels.

U.S. energy equities declined sharply on Friday after Iran announced the Strait of Hormuz was "completely open" to commercial vessels, triggering a drop in global oil prices.

Energy giants saw significant losses: Chevron shares slid almost 4.5%, Exxon Mobil fell 5%, Occidental Petroleum dropped 6%, and Valero Energy plunged nearly 7%.

Brent crude slipped below $90 a barrel following a social media communication attributed to Iran's foreign minister, Seyed Abbas Araghchi, saying that passage through the Strait of Hormuz was open for commercial shipping. The post also stated that vessels must transit via a "coordinated route" issued by Iran's maritime authorities.

The announcement follows a period in which U.S. energy stocks had advanced, driven by the earlier blockade of the Strait of Hormuz that lifted oil prices and tightened supplies of crude and other energy fuels. That disruption had supported demand for energy equities amid higher commodity prices.

The reopening declaration was tied to a ceasefire arrangement. According to material in the public domain, former U.S. President Trump agreed to a two-week ceasefire on April 7 in return for Iran fully opening the Strait. Despite that agreement, Iran's parliamentary speaker, Mohammad Bagher Ghalibaf, accused the United States of breaching the terms by permitting Israel to continue operations in Lebanon.

Throughout the U.S.-Iran ceasefire period the strait remained largely closed in practice, with only a small number of commercial vessels transiting the waterway each day as the two countries disputed aspects of the accord. The latest statement from Iran signals a shift back toward normal commercial traffic, albeit with the requirement that ships follow routes coordinated by Iran's maritime authorities.

Market participants reacted quickly to the reduced prospect of extended disruption in the shipping lane, which had been a central factor supporting elevated oil prices and the recent run-up in U.S. energy stocks. The move lower in Brent and the sell-off in major oil company shares illustrate how closely energy equities remain tied to geopolitical developments affecting key chokepoints for crude shipments.


Note: The information in this report reflects public statements attributed to Iranian officials and market moves reported contemporaneously. Details of implementation for the announced transit procedures were not provided beyond the reference to a "coordinated route" by Iran's maritime authorities.

Risks

  • Implementation uncertainty - The announcement requires vessels to follow a "coordinated route" from Iran's maritime authorities; the specifics and operational impact of that routing were not detailed, creating uncertainty for shipping and energy markets.
  • Political friction - Accusations by Iran's parliamentary speaker that the U.S. violated the ceasefire by permitting Israeli operations in Lebanon highlight ongoing political tensions that could affect the durability of the reopening and market sentiment.
  • Supply sensitivity - Energy markets remain sensitive to disruptions at the Strait of Hormuz; changes in transit conditions or perceptions of risk can quickly swing oil prices and the valuation of energy companies.

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