Oil prices plunge as Iran reopens Strait of Hormuz amid ceasefire, easing supply fears
WASHINGTON, DC: Oil prices fell sharply on Friday, April 17, after Iran announced the Strait of Hormuz would remain fully open to commercial shipping during the current ceasefire, easing fears of a prolonged supply crunch.
US crude reportedly slipped below $83 a barrel after crossing $105 earlier this week.
Global stock markets also advanced as investors viewed the move as a sign that tensions may be cooling and trade flows could stabilize soon.
BREAKING: US oil prices crash to $83/barrel as Iran officially reopens the Strait of Hormuz for the remainder of the ceasefire. pic.twitter.com/DorAuSEck9
— The Kobeissi Letter (@KobeissiLetter) April 17, 2026
Markets react as supply fears ease
The Strait of Hormuz is one of the world’s most strategically important maritime routes, carrying a major portion of global oil exports.
Any threat to vessel movement through the narrow waterway typically triggers immediate volatility in energy markets because disruptions can reduce supply and raise fuel costs across the world.
That pressure began to unwind after Iranian Foreign Minister Abbas Araghchi said, “The passage for all commercial vessels through Strait of Hormuz is declared completely open for the remaining period of ceasefire.”
The statement was interpreted as a major de-escalation signal.
In line with the ceasefire in Lebanon, the passage for all commercial vessels through Strait of Hormuz is declared completely open for the remaining period of ceasefire, on the coordinated route as already announced by Ports and Maritime Organisation of the Islamic Rep. of Iran.
— Seyed Abbas Araghchi (@araghchi) April 17, 2026
Traders quickly reduced the geopolitical risk premium that had been built into crude prices during weeks of military confrontation.
West Texas Intermediate crude, the US benchmark, reportedly dropped around 9% to $82.93 a barrel after touching $105.63 earlier in the week.
Brent crude, the global benchmark, also moved sharply lower, falling into the high-$80s to low-$90s range after earlier trading near $98.
The Strait of Hormuz had been effectively shut by Iran after the US and Israel launched military strikes in late February, disrupting tanker traffic and sharply tightening global energy supplies.
Before the conflict, Brent crude had traded below $70 a barrel.
It later surged above $100 and peaked beyond $119 in March as fears of a wider regional war intensified.
Trump hails opening of Strait of Hormuz
President Donald Trump celebrated on social media after Iran announced the Strait of Hormuz would remain open during a ceasefire.
Posting on Truth Social, Trump wrote, “IRAN HAS JUST ANNOUNCED THAT THE STRAIT OF IRAN IS FULLY OPEN AND READY FOR FULL PASSAGE. THANK YOU!”
🚨 BREAKING: The STRAIT OF HORMUZ is OPEN
— Eric Daugherty (@EricLDaugh) April 17, 2026
President Trump WINS!
"IRAN HAS JUST ANNOUNCED THAT THE STRAIT IS FULLY OPEN AND READY FOR FULL PASSAGE."
Gas about to PLUMMET!
Checkmate. 🇺🇸🇺🇸🇺🇸 pic.twitter.com/oJnnsgZZZT
Minutes later, he doubled down with another post, adding, “OUR NAVAL BLOCKADE WILL REMAIN IN FULL FORCE,” signaling continued US military presence in the region despite the easing of tensions.
Trump:
— Clash Report (@clashreport) April 17, 2026
The Strait of Hormuz is completely open and ready for business and full passage, but the naval blockade will remain in full force and effect as it pertains to Iran only, until our transaction with Iran is 100% complete! pic.twitter.com/YMGS5BUGjD
On April 16, Thursday, President Donald Trump had said that the Iran conflict “should be ending pretty soon,” while indicating another round of talks between Washington and Tehran could happen “probably, maybe, next weekend.”
President Donald Trump said at an event in Las Vegas, Nevada, that the war in Iran is going "swimmingly" and that it "should be ending pretty soon." pic.twitter.com/Rq9QCWUlKv
— Reuters (@Reuters) April 17, 2026
Earlier in the day, Trump also told reporters, “It’s looking very good that we’re going to make a deal with Iran, and it’s going to be a good deal.”
Markets appeared to take Trump’s comments, combined with Iran’s shipping announcement, as signs that both sides may be seeking a pathway away from confrontation.