Author: Tasneem Azim-Khan, Chief Investment Strategist, RBC PH&N Investment Counsel (With contributions from Noha Fazili, research analyst)
Data as of: June 19, 2026

Overview: A U.S.-Iran Memorandum of Understanding reached on June 14, 2026, signals a potential end to 15 weeks of conflict, triggering a sharp decline in oil prices and a V-shaped equity market recovery. Full normalization of energy markets and a finalized treaty, however, remain distant and uncertain.

Summary

After 15 weeks of conflict, U.S. and Iranian negotiators reached an interim peace agreement on June 14, 2026, with both sides expected to formally sign a Memorandum of Understanding (MoU) in Switzerland on June 19. Markets reacted with broad relief. U.S. equity markets — which had corrected approximately 8% at the onset of U.S. and Israeli strikes on Iran — staged a V-shaped recovery exceeding 15%, surpassing pre-conflict levels to reach new all-time highs, consistent with the historical median equity market response to geopolitical shocks of approximately a 3% decline in the S&P 500.

The MoU's core terms include: a full cessation of hostilities; the reopening of the Strait of Hormuz within 30 days, toll-free; a 60-day nuclear non-proliferation negotiating window during which Iran has agreed not to develop or procure nuclear weapons; an oil supply waiver permitting Iran to sell crude and byproducts for the duration of the ceasefire; and the unfreezing of approximately US$25 billion in Iranian assets in exchange for the nuclear freeze.

The Strait of Hormuz is the world's most critical energy chokepoint, through which roughly 20 million barrels per day of crude and oil products flow — representing approximately 25% of global seaborne oil trade and 20% of global liquefied natural gas (LNG). Iran effectively closed the Strait on March 2, triggering a 70% reduction in traffic, a sharp rise in insurance rates, and an estimated loss of 1 billion barrels of global oil supply over the four months of closure, according to analytics firm Kpler.

The MoU is incomplete — key demands remain unresolved. Two of the Trump administration's core conditions are unaddressed: the dismantling of Iran's regional proxy networks (including Hezbollah) and restrictions on Iran's ballistic missile program. Iran's own demands — including formal recognition of its authority over the Strait and upfront disbursement of frozen assets — remain actively contested. The sequencing of asset disbursement is a live point of contention: Tehran insists funds flow before signing; Washington favours performance-based disbursement. The MoU is not a finalized treaty, and a return to direct military conflict cannot be excluded.

Oil markets have responded sharply but incompletely. Brent crude has fallen more than 30% from its late-April peak, though markets are pricing in expected normalization rather than confirmed supply recovery. Brent remains approximately 7% above pre-conflict levels. Energy expert Helima Croft of RBC Capital Markets expects months before traffic approaches pre-war levels, particularly if the security environment remains unsettled.

The International Energy Agency (IEA) cut its 2026 global oil supply forecast by 3.9 million barrels per day to 102.4 million barrels per day, and reduced demand estimates by 1.1 million barrels per day. Global oil inventories are at an eight-year low; U.S. Strategic Petroleum Reserves are at a 43-year low. For 2027, the IEA forecasts a potential supply surplus — with supply surging to 110 million barrels per day against recovering demand of approximately 105 million barrels per day.

RBC PH&N Investment Counsel advises investors to monitor developments closely while maintaining a long-term perspective. The Trump administration's political incentive to secure a "win" ahead of mid-term elections adds urgency — but not certainty — to resolution efforts. Staying calm, diversified, and invested remains the primary recommendation.

For more insights on this and other important topics regarding today's economy and markets, please visit Tasneem’s insights page

Highlights

● June 14, 2026: U.S. and Iran reach interim peace agreement (MoU) after 15 weeks of conflict

● The Strait of Hormuz carries ~20 million barrels/day — roughly 25% of global seaborne oil trade

● Iran closed the Strait on March 2; traffic fell by 70% and ~1 billion barrels of supply was lost (Kpler)

● Brent crude fell more than 30% from its late-April peak following the MoU announcement

● Brent crude remains ~7% above pre-conflict levels — full normalization not yet priced in

● Global oil inventories are at an eight-year low; U.S. Strategic Petroleum Reserves at a 43-year low

● IEA 2026 supply forecast cut by 3.9 million bpd to 102.4 million bpd

● U.S. equity markets recovered more than 15% from the March 30 bottom

● Historical median equity market decline during past geopolitical shocks: ~3% in the S&P 500 (RBC GAM)

● Two key U.S. demands — proxy network dismantlement and missile limits — remain unresolved