Hormuz reopens: oil sheds its $10 war premium, but China's diversification clock keeps ticking

The Strait of Hormuz reopened to commercial traffic on Friday, triggering the most violent single-session unwind of geopolitical risk premium in six weeks. Brent collapsed 10.7% to $88.73, the S&P 500 closed at a record 7,126.06, and the Dow leapt 850 points. For Chinese treasurers — whose firms still depend on 37.7% of Hormuz-transiting crude — the tactical relief is real; the strategic lesson is not.

What happened

Iran's foreign minister Abbas Araghchi confirmed passage for all commercial vessels through Hormuz, contingent on the fragile 10-day Israel-Lebanon truce that began Thursday at 17:00 local time. The price response was violent: Brent fell $10.65 in a single session, its largest daily drop in six weeks; WTI slid to $84.90. The Nasdaq Composite extended its longest winning streak since 1992 to thirteen sessions. Travel names led gains, while ExxonMobil and Chevron dropped 3.7% and 2.2%. President Trump said the Iran conflict "should be ending soon"; Pakistan, brokering the talks, put a bilateral deal at "more than 80% complete."

Why it matters

The move validated sell-side models pegging the war premium at $10–12 per barrel, and confirmed that volumes — not headlines — now drive oil. Gulf sovereign CDS tightened, USD/CNH drifted to 6.83, and the VIX slipped back below 18. Yet the reopening is conditional: Iran retained the right to choke the strait if the Lebanon truce collapses, and Lebanese authorities have already reported multiple Israeli violations in the first 24 hours. Price action this week priced a durable de-escalation; the underlying architecture has not caught up.

China angle

Beijing's crude stockpiling (+15.8% YoY in January–February) and pivot to Russian seaborne supply — which cut the Hormuz share of Chinese imports from 51% in 2025 to roughly 44% today — proved prescient. Yet one-third of Chinese crude still traverses a waterway Tehran can close overnight. Expect accelerated LNG sourcing from Qatar via alternative Red Sea and Cape routings, deeper Strategic Petroleum Reserve builds, and a new tranche of Belt & Road investment into overland pipelines (Kazakhstan, Myanmar, Pakistan). RMB-denominated oil invoicing should accelerate as Gulf counterparties hedge against the next disruption.

Forward look — next 48 to 72 hours

Watch (i) the resumed US–Iran talks in Islamabad on Monday — "80% complete" is cheap talk until a framework is signed; (ii) the IEA monthly Oil Market Report for the OPEC+ restocking signal and demand revisions; (iii) any Israel–Hezbollah flashpoint that could re-impose the premium within 48 hours. Base case (60%): Brent stabilizes $85–92 through April, S&P consolidates at record. Risk scenario (30%): truce collapse lifts Brent back above $105 within a week. Actionable: corporate treasuries should unwind tactical energy hedges selectively while extending 6–12 month strategic hedges — premium is cheap, certainty is not.