Oil prices tumbled in response. Brent crude, the international benchmark, dropped 10.8% to $88.70 per barrel, while West Texas Intermediate fell 11% to $81.20. The move marked one of the sharpest single-day declines in recent weeks, driven by a sudden easing of geopolitical risk in one of the world’s most sensitive waterways.
Iranian Foreign Minister Seyed Abbas Araghchi said in a post on X that the strait would stay “completely open” for commercial transit for the duration of the ceasefire, aligning the decision with broader de-escalation efforts in the region. The statement immediately shifted market sentiment from tension to relief.
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
The Strait of Hormuz is no ordinary shipping lane. It is a narrow but critical artery through which roughly one-fifth of global oil supply flows. Any hint of disruption tends to ripple through energy markets within minutes. Iran controls its northern edge, giving it strategic weight in global trade discussions.
That is why Friday’s announcement carried outsized impact. Traders quickly priced out worst-case scenarios, and oil futures followed suit, sliding sharply as supply fears cooled.
Equity markets reacted in the opposite direction. US stock futures surged, with Dow futures up 560 points, or 1.16%. The S&P 500 gained 0.8%, while Nasdaq 100 futures rose 0.9%. The broader tone across markets shifted from caution to optimism in a matter of hours.
Tech-heavy stocks added further momentum. The Nasdaq Composite extended its winning streak to 12 consecutive sessions, its longest run since 2009. A continued rally would push it into territory not seen since the early 1990s.
The easing of tensions comes after President Donald Trump said Israel and Lebanon had agreed to a 10 day ceasefire. In a post on Truth Social, he also echoed the reopening of the Strait of Hormuz, reinforcing the market’s interpretation that immediate supply threats were fading.
Even with the sharp decline, oil prices remain above levels seen before the recent escalation, suggesting that while panic has cooled, uncertainty has not fully disappeared.
For now, the message from the markets is simple: when one of the world’s most important shipping lanes opens without restriction, global risk appetite returns just as quickly.
