The Strait of Hormuz is Now Open! Or Is It? Here's How President Trump's Blockade Could Continue to Impact the Energy Markets.

By Matt DiLallo – Apr 17, 2026 at 1:30PM ESTKey PointsIran has declared that the Strait of Hormuz is fully open to commercial traffic. The U.S. Navy continues to enforce its blockade. Oil needs to start flowing soon to avoid damage to the global economy. For more than a month, Iran has effectively closed the Strait of Hormuz to commercial traffic by attacking ships attempting to pass through that narrow waterway. However, with Israel and Lebanon reaching a ceasefire deal yesterday, Iran's foreign minister stated in a social media post that: "The passage for all commercial vessels through the Strait of Hormuz is declared completely open." President Trump responded on social media, first thanking Iran for announcing the full reopening of the Strait. However, he followed that up with a subsequent post stating that the U.S. Naval blockade remains in full force. Here's a look at what's happening and how it could impact the energy markets. Image source: Getty Images. A ceasefire upon a ceasefire with a blockade On April 7, the U.S. agreed to a two-week ceasefire with Iran in exchange for a complete reopening of the Strait of Hormuz to commercial traffic. While the U.S. and Israel stopped bombing Iran, which ceased retaliatory strikes against military and energy industry targets across the Middle East, the Strait has remained closed to traffic due to Israel's military campaign against Hezbollah in Lebanon, which Iran believed violated the ceasefire agreement. However, with Israel and Lebanon agreeing to a 10-day ceasefire on Thursday, Iran is now reopening the Strait to commercial traffic. Vessels must transit through a coordinated route to avoid any potential sea mines in the Strait. While Iran won't attack ships moving through the Strait, the U.S. Navy will still enforce its blockade against Iran until it reaches a peace deal. According to the U.S. Central Command, the Navy is blocking "all vessels of all nations entering or leaving coastal areas or ports in Iran." It has turned back several ships since imposing the blockade in the Gulf of Oman, just outside the Strait of Hormuz. It will allow the free passage of all other ships. Image source: Getty Images. How will this impact the energy market? Oil prices tumbled after news that Iran reopened the Strait of Hormuz. Brent crude, the global oil benchmark, fell more than 10% by the early afternoon to under $89 per barrel, while WTI, the primary U.S. benchmark, slumped around 12% to $83 a barrel. Both oil benchmarks are now well off their peaks of more than $119 following Iranian attacks on energy infrastructure in the Persian Gulf. While oil prices are falling on the belief that crude will start to freely flow out of the Persian Gulf again, it's not yet clear if ship owners are willing to risk the voyage. Further, the current ceasefire between the U.S. and Iran will expire next week if the two sides don't agree to an extension or sign a peace deal. Given the fragile situation, crude oil prices could be very volatile in the coming week. The longer it takes oil to flow out of the Persian Gulf, the worse the global energy situation could become. According to a report by El País, it will take the oil market three to five months to normalize, even after the Strait reopens, due to the time required to transport and refine oil, repair damaged facilities, and restart shut-in wells. As a result, the world could face fuel shortages in the coming weeks, with the International Energy Agency recently warning that Europe could face jet fuel shortages in the next six weeks. What to watch While the market is breathing a sigh of relief today, the situation in the energy market isn't over yet. Unless the U.S. and Iran sign a peace agreement soon, the Strait could close again, causing another oil price spike. Investors need to monitor this risk and brace for the potential for more volatility in the coming week. Read NextApr 17, 2026 •By Reuben Gregg BrewerUtility Stock Showdown: Southern Company vs. NextEra Energy -- Which Is the Better Buy?Apr 17, 2026 •By Matt DiLallo3 Battle‑Tested Energy Stocks With the Balance Sheets to Handle the Next Iran‑Driven ShockApr 17, 2026 •By Micah ZimmermanTrump's Iran Strategy Is Redrawing the Map for Oil -- 3 Energy Stocks Built to Outlast the HeadlinesApr 17, 2026 •By Geoffrey SeilerOne Sector Is Crushing Everything Else in 2026 -- Here's the Best $1,000 Buy in ItApr 17, 2026 •By Steven PorrelloHere's Why I Wouldn't Touch USA Rare Earth With a 10‑Foot Pole in This Critical‑Minerals Arms RaceApr 17, 2026 •By Rich SmithWhy ExxonMobil Stock Dropped on FridayAbout the AuthorMatt DiLallo has been a contributing Motley Fool stock market analyst specializing in covering dividend-paying companies, particularly in the energy and REIT sectors, since 2012. He also covers pre-IPO companies, ETFs, and other investing topics. He holds an MBA from Liberty University.TMFmd19X@MatthewDiLallo