A sustained disruption of the Strait of Hormuz would not just push oil prices higher, it would test the global oil market’s ability to absorb another geopolitical shock without tipping into a broader energy crisis. In a scenario where tanker traffic is constrained but not fully halted, Brent likely settles into a $90–$100 per barrel range for several weeks. Prices might move materially above $100 per barrel if both physical flows and infrastructure damage overwhelm emergency responses.

What ultimately determines whether this remains a spike or evolves into a prolonged dislocation is not just the disruption itself, but how effectively governments, particularly through the IEA, respond with stock releases, logistics coordination, and credible market signaling.

Why Hormuz Matters So Much

The Strait of Hormuz is a narrow passage of water that connects the Persian Gulf and the Gulf of Oman. It shipping lanes are only 2 miles wide in either direction at its narrowest point. It is the primary route Middle Eastern countries use to ship crude oil and petroleum products from the Persian Gulf to the rest of the world.

Roughly one‑fifth of global oil and petroleum liquids consumption and about one‑quarter of seaborne oil trade transit the Strait of Hormuz, making it one of the world’s most critical maritime chokepoints. In 2024, flows through Hormuz averaged around 20 million barrels per day, with about 80% heading to Asian buyers such as China, India, Japan, and South Korea. The exposure is not just crude oil. Refined products, LNG, petrochemical feedstocks — the full downstream supply chain for Asia's industrial economies flows through the same corridor. A closure does not just strand Gulf crude oil; it simultaneously tightens gasoline, jet, and diesel markets for the world's fastest-growing demand centers. The cascade effects move quickly.

Recent conflict has already shown how sensitive prices are: when tanker traffic was sharply curtailed at the beginning of March, Brent surged above $100 per barrel within days. The price volatility of the last two weeks could be a useful analogue for how markets might react to a more sustained closure.

Near‑Term Price Impact: The First Few Weeks

The case for Brent staying the $90-$100 per barrel range is based on the premise that tanker traffic through Hormuz is curtailed but not fully stopped for several weeks. This is a scenario in which intermittent attacks and a slow build-up of naval escorted convoys keeps insurance costs and tanker day rates high. Some cargoes still move, but alternative routes (via pipelines in Saudi Arabia and the UAE) and refiners drawing on commercial and strategic inventories only partially backfill lost tanker volumes.

Key variables that would push prices higher or lower include:

  • Duration and severity of disruption: A few days of heightened risk may only produce a brief spike, whereas several weeks of near‑standstill justify a sustained risk premium.
  • Damage to physical infrastructure: Attacks that actually disable loading terminals and pipelines would limit recovery even if the strait reopens, potentially nudging Brent above $100 per barrel until the infrastructure is repaired.
  • Confidence in policy response: Clear, credible commitments to use strategic stocks and coordinate logistics can help contain panic, while hesitation or fragmented action invites speculative buying and hoarding.

Under a “limited traffic” scenario, well‑executed stock releases and calm signaling could keep prices closer to $90 per barrel, even amid high geopolitical tension.

Role of IEA and Strategic Stock Releases

IEA members are obliged to hold emergency oil stocks equivalent to at least 90 days of net imports and can deploy these through a coordinated stockdraw, demand restraint, fuel‑switching, and increased production. In response to the current Hormuz‑linked crisis, the IEA signaled its willingness to release up to 400 million barrels, the largest coordinated action in its history. Successful and timely execution is critical to establishing calm in oil markets. Not all the oil will be released at once. At robust drawdown rates, on the order of several million barrels per day, such action could offset a meaningful share of lost Gulf exports for weeks to months, moderating prices towards the lower end of that $90–$100 per barrel.

However, leaning too heavily on this lever carries risks:

  • Timing gaps: If seaborne flows collapse as political decisions, legal approvals, or logistics delay the physical arrival of stock barrels, prices can overshoot $100 per barrel before the calming effect kicks in.
  • Depletion and signaling: Drawing down too aggressively today raises concern about limited buffers tomorrow, which can sustain a higher risk premium even after the initial shock.
  • Uneven participation: If some importers free‑ride while others shoulder the stockdraw, tensions over burden‑sharing may complicate future cooperation, weakening the credibility of the entire system.

Coordinated stock releases can be very effective at smoothing a temporary supply shock and reducing price volatility. However, they cannot be a full substitute for restoring safe passage through Hormuz. Reopening the route is ultimately what restores durable market stability and lower oil prices.