Overview
The acute shock period spans six weeks of near-total Strait of Hormuz closure following U.S.-Israeli strikes on Iranian infrastructure, producing the largest geopolitical oil supply disruption in modern history. Approximately 20% of global oil supplies was removed from the market — 3 to 5 times larger than any prior comparable event (1973 Yom Kippur War, 1979 Iranian Revolution, 1990 Gulf War, or 2022 Russia-Ukraine war). The period ended with the April 7, 2026 provisional ceasefire agreement.
Key Events in This Period
- U.S.-Israeli strikes on Iranian infrastructure — February 28, 2026 — Hormuz effectively closed — Q1 Supply Destruction, Dallas Fed Hormuz Closure, Synthesis
- Hormuz transit collapse: ~130 ships/day → ~6 ships/day (~95% drop) — WTO AIS tracker — Q1 Supply Destruction, Synthesis
- Iran announces Strait closure — March 2, 2026 — WTO AIS data, Q1 Supply Destruction
- Qatar LNG force majeure declared — March 3, 2026 — Synthesis, Gemini Deep Research
- IEA emergency stock release authorized (400 million barrels) — March 11, 2026 — Open Questions, Q1 Supply Destruction
- Trump sets deadline for Tehran to reopen Hormuz, warns of "Total Regime Change" — April 7, 2026 — Q1 Supply Destruction, Synthesis
- Trump-Araghchi agreement: provisional ceasefire, Hormuz reopens under Iranian management, $2M/vessel transit fee — April 7, 2026 — Synthesis, Open Questions, April 7 Ceasefire 2026
Defining Characteristics
This period is defined by maximum supply destruction and maximum price uncertainty simultaneously. The WTO AIS tracker confirmed a ~95% collapse in Hormuz transit, with commercial shipping effectively halted. The EIA quantified production shut-ins at 7.5 mbd in March 2026, rising to 9.1 mbd in April 2026. No prior geopolitical event had removed this magnitude of supply — the Dallas Fed confirmed the closure's scale at "close to 20% of global oil supplies" and explicitly assessed it as 3–5× larger than any prior modern shock.
Price uncertainty was acute: Brent averaged $103/b in March 2026 (spiking to $119/b per Reuters), with institutional forecasts diverging sharply — EIA central case at $115/b Brent, Morgan Stanley/JPMorgan warning of $150–$180/b if the Islamabad summit failed. Physical markets were already pricing near $150/b (WTI Midland Europe at a record Dated Brent +$22.80/bbl CIF Rotterdam by April 14), far above futures.
The period ended not through resolution but through a provisional ceasefire that left fundamental questions — sanctions relief compliance, $2M/vessel fee commercial viability, Hormuz normalization timeline — unresolved.
Related Articles
- Q1 Supply Destruction
- Synthesis
- Open Questions
- Dallas Fed Hormuz Closure
- Eia Steo April 2026
- Wto Hormuz Trade Tracker
- April 7 Ceasefire 2026
- Q2 Price Impact
- Historical Parallels
Source
Compiled from multiple institutional sources including EIA STEO, IEA OMR, OPEC MOMR, and news reporting on the Hormuz closure acute shock period (Feb 28 – Apr 6, 2026).