The Hormuz Oil Shock Has Flipped the Rate Cycle — Equities Are the Last to Know

Iran’s suspension of US talks and threat to fully close the Strait of Hormuz pushed Brent up more than 4% to open June, near $95 after a $126 four-year peak in April. The supply shock has dragged euro-area inflation to 3% and all but committed the ECB to a June 11 hike — reversing its easing cycle. Yet the S&P 500 closed at a record 7,609.78, pricing none of it.

What happened. A US–Israeli air war on Iran, live since 28 February, has choked the Strait of Hormuz — the conduit for roughly 25% of seaborne oil and 20% of LNG. The IEA calls it the largest supply disruption in oil-market history; tanker traffic has collapsed about 70% toward zero. Brent has round-tripped from roughly $78 pre-war to a $126.41 peak and back to $94.58 — still ~22% higher.

Why it matters. A supply shock is the cruelest regime for central banks, lifting inflation while sapping growth — textbook stagflation. The tell is cross-asset divergence: gold at $4,485 and oil elevated, yet the VIX near a year-to-date low and the S&P 500 at a record on an AI-chip melt-up (Marvell +33%, HPE +19%). The ECB sits at 2.00% but markets price a 92% hike to 2.25% on 11 June; the Bank of Korea logged two hike dissents. Credit spreads have not yet repriced the squeeze on import-dependent issuers.

China angle. China — the top buyer of Gulf and Iranian crude, with roughly half its oil imports crossing Hormuz — is the most exposed major economy. But offshore yuan near a three-year high (≈6.76) cushions the local-currency oil bill and aids RMB-settled energy trade and Belt and Road financing. Outbound investors should treat Gulf logistics and energy-intensive supply chains as elevated risk.