US futures advanced and oil prices retreated on June 15, 2026, after the United States and Iran reached a peace deal to reopen the Strait of Hormuz, ending nearly four months of conflict that had roiled energy markets. The S&P 500 gained 1.7 percent, the Nasdaq 100 rose 3.1 percent and the Dow Jones Industrial Average set fresh records while Bitcoin climbed above $66,000, Bloomberg reported.
According to the Bloomberg markets wrap, the advance in equities drove the S&P 500 higher by 1.7 percent on Monday with the tech-heavy Nasdaq 100 adding 3.1 percent. The Dow Jones Industrial Average hit all-time highs as US crude settled below $81 a barrel, easing inflation concerns. Bets on Federal Reserve rate hikes receded even though Treasuries and the dollar barely budged and the positive sentiment extended to risk assets across the board.
The peace agreement comes after a period of heightened tensions in which the Strait of Hormuz was effectively closed since the conflict began in February, Investopedia reported. Ships have begun sailing through the passage again after the US ended its naval blockade and the International Energy Agency had sharply downgraded its global oil demand outlook citing a 1.1 million barrel-per-day reduction linked to the disruptions. A separate analysis noted that the crisis left a lasting mark on oil markets as demand slumped while the pact provides Iran an immediate waiver to resume exports during a 60-day ceasefire period.
Oil prices continued sliding from elevated levels with the latest settlement building on a nearly 20 percent decline in May when Brent crude closed around $92 a barrel, according to Argent Financial insights. The drop follows spikes that had pushed benchmarks above $118 per barrel in April before ceasefire prospects triggered reversals. Fortune data placed Brent at roughly $84.62 on the morning of June 15 as lower energy costs offered relief to broader economic pressures.
The agreement shifts attention to a complex 60-day negotiating period over Iran’s nuclear program during which commercial shipping through the critical waterway is expected to normalize, Bloomberg coverage indicated. Congressional Research Service assessments from earlier in the year had outlined the strategic risks of Persian Gulf disruptions for global energy commerce. S&P Global continues to monitor real-time oil data in light of these geopolitical changes that could reshape regional supply dynamics.
Equity markets built on prior momentum that delivered a 5.3 percent return for the S&P 500 in May and extended a two-month stretch of strong performance, financial reports showed. Technology shares led the advances amid reduced uncertainty over supply chains and inflation while Asian indices in Japan and South Korea also posted substantial gains in response to the news. The developments mark a significant de-escalation that market participants viewed as supportive for risk assets in the near term.
