How the US-Iran Peace Deal Reshaped Global Markets Overnight

Oil Prices Crash on Hormuz Reopening Hopes

The energy market experienced the most dramatic single-move shift. U.S. crude oil futures plummeted more than 4%, and Brent crude fell to around $83.70 per barrel, as the agreement to reopen the Strait of Hormuz removed the most acute supply-disruption premium from the market . The strait, a chokepoint for roughly a fifth of global oil consumption, had been largely inaccessible since the conflict began.

However, the relief may be premature. ADNOC, the UAE's state-owned oil company, has indicated that complete oil transit through the Strait of Hormuz might not be restored until the first or second quarter of 2027, even under a finalized peace accord . This means physical oil markets could remain tight for months, even if the geopolitical risk premium recedes on paper.

Gold's Surprising Rally: Not a Safe-Haven Trade

In a counterintuitive move for a risk-on day, gold prices surged 2–2.7%, with spot gold reaching $4,304–$4,334 per ounce—its highest level since June 9 . August gold futures climbed to $4,325.20 . The rally was not driven by fear, but by the mechanics of interest rate expectations.

The logic runs like this: the peace deal causes oil prices to drop, which lowers headline inflation. Lower inflation reduces the pressure on the Federal Reserve to raise interest rates aggressively. When rate-hike expectations cool, real bond yields fall, making non-yielding assets like gold more attractive . "Gold presents an intriguing anomaly in this situation," noted one market strategist. "In a typical risk-on scenario, we would expect gold to decline... yet it remains supported around $4,300, indicating that the market may not fully trust the agreement yet" .

Equities and Risk Appetite Surge

Stock futures jumped ahead of the Asian open. S&P 500 futures gained approximately 0.8% and Nasdaq 100 futures climbed 1.2% . Asian equity indices and fixed-income securities rallied broadly, with investors rotating out of dollar and oil hedges into riskier assets on the assumption that de-escalation reduces both global inflation and recession risks .

The tech-heavy Nasdaq was a particular beneficiary, as lower energy costs and a weaker dollar are tailwinds for growth-oriented companies.

The Israeli Airstrike: An Immediate Threat to the Ceasefire

On the same day the US-Iran framework was announced, Israel bombed Beirut's southern suburbs, targeting what it described as a Hezbollah command center . At least three people were killed and 15 wounded, according to Lebanese authorities .

This airstrike exposes a critical fragility in the agreement. The Islamabad Memorandum includes "the immediate and permanent termination of military operations on all fronts, including in Lebanon" . However, Israel is not a signatory to the deal, and its military continued operations against Hezbollah—an Iran-aligned militia—regardless. Senior Iranian officials condemned the strike and threatened retaliation, raising the risk that the broader ceasefire could collapse before it is even formally signed .

The 60-Day Nuclear Clock and Other Critical Risks

The deal is best understood as an interim memorandum of understanding, not a final peace treaty . It establishes a 60-day window for negotiations on Iran's nuclear program—specifically issues around uranium enrichment levels and the status of highly enriched uranium stockpiles . If these talks fail, the entire framework could unravel. This is widely viewed as the single largest tail risk for markets.

Several other factors could derail the recovery rally:

• Implementation risk: The formal signing ceremony is scheduled for June 19 in Switzerland. Until then, the deal remains an unsigned memorandum .
• Hormuz reopening timeline: Even with a signed deal, full oil transit restoration is not expected until at least Q1–Q2 2027 .
• Federal Reserve meeting: The FOMC's two-day policy meeting begins on June 16. The drop in oil prices gives the Fed more room to pause or slow its tightening cycle, but a hawkish statement or dot plot could reverse the risk rally instantly .
• Israel's posture: Continued airstrikes against Iranian proxies could drag Iran back into a military confrontation, irrespective of the U.S.-Iran agreement .

What Comes Next

The market's Monday morning reaction was a powerful vote of confidence in a peace process that is still in its infancy. But as one analyst cautioned, "the deal won't be finalized until it is signed, and investors should not underestimate the potential for setbacks" . The 60-day negotiation period, the formal signing ceremony in Switzerland, and the Federal Reserve's imminent policy decision all converge in the coming week, promising continued volatility across currencies, commodities, and equities.