Market Analysis on U.S. Blockade and Iran's Control Over the Strait of Hormuz

By Patricia Miller

Apr 18, 2026

2 min read

Iran tightens control over the Strait of Hormuz, while market expectations for a U.S. blockade lift decrease significantly.

#What Is Happening in the Strait of Hormuz?

Iran is enhancing its control over the crucial Strait of Hormuz, despite the existence of a ceasefire. Recent analyses indicate a significant shift, as the likelihood of a U.S. blockade lift by the May 31 deadline has dropped to 81.5%, down from 90% just a day prior. This decline in expectations reflects a growing skepticism within trading circles regarding a swift resolution to the current blockade situation.

The market dynamics for the fewer than ten vessels navigating the Strait from April 13 to April 19 remain at a static 0.4% chance of successful passage. This figure has experienced limited movement as Iranian enforcement turns back vessels, yet many traders continue to anticipate some degree of transit activity, which contrasts sharply with the declining probabilities surrounding the blockade's potential end.

The daily trade volumes offer further insights: $9,914 is recorded for the May 31 market versus a slightly higher volume of $19,688 for the April 19 market. Notably, the May 31 market requires $1,419 to shift by five points, suggesting moderate liquidity levels. Conversely, the April 19 market presents a thicker profile, needing $3,849 for a similar point move, highlighting greater trader interest as its expiration approaches.

#How Is the Market Responding to the Ceasefire?

Despite the ceasefire, it has not facilitated any immediate relief from the blockade. As a result, the market is now positioning itself for an extended standoff. Traders who choose to buy in at 81.5 cents can expect a return of 1.28 times their investment if the blockade is lifted by the end of May. However, this strategy hinges on a belief in a diplomatic breakthrough, which the market perceives as less likely than it did just 24 hours earlier.

#What Should Investors Watch For?

Investors should closely monitor updates from President Trump or U.S. Central Command (CENTCOM), along with Iran's subsequent actions regarding ship movements. A modification in diplomatic statements or military posturing could dramatically alter these odds in a short timeframe. Understanding these nuances is essential for anyone looking to navigate the complexities of the current market environment surrounding the Strait of Hormuz.

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.