Understanding Iran's Impact on Strait of Hormuz and Global Markets

By Patricia Miller

Apr 18, 2026

2 min read

Iran's blockade of the Strait of Hormuz affects oil markets, with US and UK naval tensions influencing investments.

What does Iran's stance mean for the Strait of Hormuz? Iranian negotiator Mohammad Bagher Ghalibaf criticized the US naval blockade, labeling it as ineffective and demonstrating a lack of understanding. He reinforced Iran’s control over the strategic Strait of Hormuz. Following this, the market perception of a potential end to the blockade announced by Trump by May 31 has seen a decline, dropping from 90% to 82%.

Iran's declaration of the Strait’s closure, coupled with its strong objections to the US blockade, triggered substantial changes in related markets. The likelihood of UK warships navigating through the Strait by April 30 has decreased, with current odds resting at a mere 8.5%. The Islamic Revolutionary Guard Corps (IRGC) has been actively asserting its influence in the waterways, making foreign naval transit appear increasingly doubtful.

The blockade market reflects significant trading activity, having exchanged approximately $29,602 USDC, with a notable five-point decrease that stands out as the largest movement to date. The strength of the order book, currently at $1,419, indicates a capability to manage average trading levels while remaining susceptible to significant strategic shifts.

Traders are modifying their expectations, factoring in the potential for prolonged conflict as the blockade remains in place. The outlook for lifting restrictions by the April 19 contract is positioned at just 8%, suggesting a high-risk potential for returns. Achieving a swift diplomatic resolution seems improbable under the current circumstances.

Attention should be paid to any updates from the US Navy and activities from the IRGC in the Strait. Changes in military presence or public statements from Trump could cause considerable fluctuations in these markets.

Important Notice And Disclaimer

This article does not provide any financial advice and is not a recommendation to deal in any securities or product. Investments may fall in value and an investor may lose some or all of their investment. Past performance is not an indicator of future performance.