The Hormuz Crisis: What a Billion Barrels of Lost Oil Means for Markets

The Setup: A Tight Market in the Eye of the Storm

Global oil markets are sitting on a powder keg. Despite what appears to be a relatively orderly price around $110 per barrel, the structural fundamentals tell a starkly different story. The closure of the Strait of Hormuz — now entering its ninth week — has removed 13 million barrels per day of oil from the global market. That's roughly 13% of total global supply, vanishing overnight.

For context: before the war, the world produced and consumed roughly 100 million barrels of oil per day. Losing 13 million barrels isn't a rounding error — it's a structural shock. And yet, oil prices have only recently crossed $110. Why? According to Rory Johnston, one of the most cited independent oil analysts tracking the crisis, the market isn't forward-looking in the way equities are. It only reacts to what's here and now.

"The oil market is actually really bad at being forward-looking. It only really deals with things in the here and now."

That means the worst is likely still ahead.

Understanding the Deficit: A Billion Barrels and Counting

Since mid-March, oil production across the Gulf has been forcibly shut in. Tankers stopped loading. Inventories filled up. Wells closed. To date, the world has already lost roughly 600 million barrels of supply — and that number climbs by 13 million barrels every single day the strait remains closed.

If Hormuz reopens by May 1st, the total volume of lost oil will still reach approximately 1 billion barrels. If it stays closed through June, add another 400 million barrels to that tally. For perspective, global OECD commercial inventories — the buffer the market relies on — stand at just 2.5 to 3 billion barrels. Losing a third to half of that cushion in a matter of months is unprecedented.

This isn't a scenario the market is built to absorb gracefully. As Johnston put it:

"The market is not built to draw stocks at this pace for this long."

Why Aren't Prices Higher Already?

Given the scale of the disruption, many analysts expected oil to spike far beyond current levels. So why hasn't it? Johnston identifies three key factors holding prices in check — for now:

• The April 7th Ceasefire: The agreement to pause hostilities removed the tail risk of permanent infrastructure damage. Had Iran or Israel begun targeting major oil facilities — like Saudi Arabia's Abqaiq processing plant, which handles over 9 million barrels per day — recovery timelines would shift from weeks to years.
• Verbal Interventions from the White House: President Trump has repeatedly declared the war "basically over," triggering sharp sell-offs in crude futures. On day nine of the war, oil dropped $30 per barrel on a single statement. These jawboning efforts have injected massive downside volatility, discouraging speculative positioning.
• The Market's Delayed Reaction: Oil markets don't price in disruptions until they see inventories draw. The ceasefire came early enough that OECD stocks hadn't yet collapsed. But now, draws are accelerating — and the curve is screaming tightness.

Johnston's fair value model, which correlates inventory levels with historical pricing, suggests that if current draw rates persist through June, Brent crude could reach $200 per barrel by summer.

The Curve Is Telling the Story

For oil traders, the shape of the futures curve is often more important than the flat price. Right now, the market is in steep backwardation — meaning near-term barrels are trading at a significant premium to future deliveries.

At one point in early April, the WTI prompt spread hit an all-time high of $15 per barrel between the first and second contract. That's a 15% monthly yield just for renting a barrel to the market for 30 days. The message is clear: Give us your oil. Now.

"If the prompt futures contract is two months from now, what about a barrel today? That backwardation keeps going. The closer you are to a spot deliverable barrel, the more expensive you are."

Physical dated Brent — oil for delivery within 10 to 30 days — hit an all-time nominal high of $144 per barrel on April 7th, with physical delivery premiums adding another $20 per barrel on top. That puts real-world transaction prices near $170 per barrel, even as futures hovered around $119.

This isn't manipulation. It's desperation.

Who Feels the Pain?

Not all regions are equally exposed. North America, thanks to its domestic shale production and Canadian pipelines, is the most energy-secure region on the planet. The U.S. imports roughly two-thirds of its crude from Canada, and those barrels can't easily go elsewhere due to pipeline lock-in.

But that doesn't mean American consumers are insulated. Coastal markets — where most Americans live — are still exposed to global equivalent pricing. If a refiner in California can sell gasoline to Asia at a higher price, they will. Arbitrage ensures that pain spreads.

The hardest hit? The Global South. Poorer nations with lower purchasing power will be priced out entirely. Over time, if Hormuz stays closed, the market will force demand destruction — not through voluntary conservation, but by economically severing access for the most vulnerable consumers.

"If this goes on and we need to destroy 10 million barrels a day of demand, the bulk of that will be borne by poorer countries in the Global South."

Meanwhile, major U.S. allies — Japan, South Korea, Thailand, and Australia — are among the most exposed importers in Asia. China, ironically, may be better positioned thanks to its 1 billion barrels of strategic reserves, compared to the U.S.'s less than 400 million barrels.

The Taco Question: When Does This End?

Markets are pricing in an eventual resolution — what's been dubbed a "taco" scenario, where Trump makes concessions under external pressure. But Johnston cautions that the conditions for a deal haven't materialized yet.

The core issues — Iran's domestic enrichment, missile programs, regional proxies — remain unresolved. The new wrinkle: Iran now demands recognition of its ability to control the strait going forward. That's a significant escalation in demands, not a path to compromise.

So what would force Trump's hand? Johnston points to market pressure — rising oil prices, consumer pain at the pump, or equity market stress. But here's the paradox: every time Trump says the war is "almost over," oil drops and equities rally, reducing the pressure on him to act.

"Both sides think they're winning. And as long as both sides earnestly think they're winning, it's going to be hard for either side to feel like they need to make a concession to end it."

The U.S. blockade of Iran, implemented two weeks ago, adds another layer. It increases pressure on Tehran — but it's only been in place for a fraction of the time Hormuz has been closed. Meanwhile, the rest of the Gulf has been shut in for nearly two months.

What Happens Next?

Johnston is watching a few key signals:

• Diplomatic movements: Is JD Vance on a plane to Islamabad? Are concessions being floated?
• Oil price trajectory: If Brent climbs steadily toward $150–$200, does Trump lift the blockade to restart talks?
• Inventory data: Global visible inventories are already drawing at roughly 10 million barrels per day. When does that become unsustainable?

One near-term catalyst: reports suggest Iran may run out of storage capacity within the next 13 days, forcing permanent well shut-ins. While Johnston is skeptical of "points of no return," the pressure is undeniably building.

The Long-Term Shift: Peak Oil Demand Accelerates

Ironically, this crisis may be bullish for oil prices in the short term but bearish for oil demand in the long run. High prices and supply fears will accelerate the energy transition — particularly in Asia, where vulnerability is most acute.

Johnston expects this shock to drive aggressive EV adoption, especially in markets like Japan, South Korea, and Southeast Asia. The framing will shift from climate moralism to energy security and affordability — a far more effective political argument.

"This will be the centerpoint of energy transition debates in the future. The 'get off foreign oil' crowd is going to be talking about Hormuz for a decade."

He forecasts peak oil demand could arrive by the mid-to-late 2030s — potentially sooner if this crisis lingers. Natural gas, meanwhile, will continue to grow, driven by AI data centers and industrial demand.

The Bottom Line

The Strait of Hormuz has been closed for nine weeks. 13 million barrels per day of oil supply has vanished. 1 billion barrels of production has already been lost. And yet, oil is only at $110.

The market isn't forward-looking. It's reactive. And when it does react — when inventories collapse, when refiners can't source crude, when consumers feel the squeeze — the move could be violent.

Rory Johnston's model points to $200 Brent by the end of June if the strait remains closed. That's not a prediction — it's a reflection of what the fundamentals demand if the deficit persists.

For now, the market is betting on a deal. But every day that passes without one, the math gets worse.

"We're all boiling frogs at this point."

Stay sharp. Stay liquid. And keep your eye on Hormuz.