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There's no such thing as "the oil price."

Every day, headlines announce that oil surged or oil crashed — but they rarely say which oil. That omission matters more than usual right now, with the Middle East in crisis and crude swinging by double digits in a single session.

Here's what you need to know.

Two benchmarks, two stories

The world runs on two main crude oil benchmarks: WTI and Brent.

WTI — West Texas Intermediate — is the US benchmark. It's physically priced at Cushing, Oklahoma, a landlocked pipeline hub in the middle of the country. WTI is light and low in sulfur — what refiners call "sweet" crude — which makes it relatively easy to turn into gasoline. It's the heartbeat of American oil production.

Brent Crude is the global benchmark. It originates in the North Sea off the UK and Norway, travels by tanker, and prices roughly 70–80% of the world's oil contracts. When a trader in Tokyo or Frankfurt wants to know what oil costs, they look at Brent.

Both prices move in the same direction most of the time. But they don't move identically — and the gap between them is where the real signal lives.

The spread

Under normal conditions, Brent trades $2–$5 above WTI. That premium reflects the cost of shipping seaborne oil to global destinations, plus a built-in risk premium for oil that crosses oceans and chokepoints.

When the spread widens significantly, it almost always means one of two things: the US has an oversupply problem (think: the shale boom years, when US crude piled up at Cushing with nowhere to go), or there's a geopolitical shock threatening global supply that doesn't directly touch US production.

Right now, it's the second one.

The Strait of Hormuz — and why Brent moved first

The Strait of Hormuz is a narrow waterway off the coast of Iran. About 20 million barrels of oil pass through it every day — roughly 20% of global supply. Saudi Arabia, Iraq, the UAE — their exports flow through Hormuz. Iran borders it on one side.

When US and Israeli airstrikes on Iran began in early March, the Strait effectively closed. Brent spiked immediately — because Brent is seaborne, global, and directly exposed to Middle Eastern supply routes. WTI followed, but more slowly. US crude doesn't travel through Hormuz.

Brent briefly crossed $100, then surged toward $119 a barrel — the highest since 2022. The IEA coordinated a release of 400 million barrels from member nations' strategic reserves. Brent barely dropped below $100 before climbing again. Goldman Sachs estimated a geopolitical risk premium of roughly $14 per barrel, with forecasts ranging up to $150 if the disruption persisted.

Then, in a single session, oil crashed more than 10%. Why? Trump said peace talks were progressing and airstrikes might pause. The next day, Iran denied any talks were happening. Oil rebounded.

That's the world right now: every headline moves the market, and Brent moves first.

What this means for investors

• Energy ETFs like XLE and XOP track US oil producers, who sell mostly WTI-priced crude. Higher oil prices boost their earnings — but WTI's relative insulation from Hormuz means these ETFs won't always track Brent one-for-one.
• Airlines and transport stocks are on the other side of this trade. Every dollar oil falls — for whatever reason — improves their margins. Watch WTI for the US read-through here.
• Watch Brent as a global growth signal. When Brent is elevated on geopolitical risk, it's a tax on every economy that imports oil — which is most of them.
• The Brent–WTI spread is itself worth tracking. A widening spread is the market quietly saying: the global supply picture is more stressed than the US one.

Most financial headlines use "oil" as shorthand for Brent. Now when you see that number, you know what it actually represents — and why it's the one that's been making news.

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