A memorandum of understanding between the US and Iran, signed in mid-June 2026, is doing something that months of Federal Reserve speeches and earnings beats couldn’t: making investors genuinely relaxed about inflation.
The interim deal, which extends a prior ceasefire by 60 days while the two sides negotiate a comprehensive peace agreement, sent the S&P 500 up approximately 1% and the Nasdaq climbing nearly 2%. Oil prices dropped to around $80 per barrel, a 33% decline from March 2026 highs.
What the deal actually says
The core of the agreement centers on two things that matter enormously for global trade. First, the reopening of the Strait of Hormuz for commercial shipping. Second, the lifting of the US naval blockade on Iranian ports. Traffic through the strait is expected to return to pre-war levels within 30 days.
In exchange for these concessions, Iran is expected to receive some degree of sanctions relief and a potential unfreezing of assets. A $300 billion reconstruction plan has been mentioned, though funding details remain unresolved. A formal signing ceremony is anticipated around June 19, 2026, in Switzerland.
