The $70 a Barrel Nobody Talks About

Diesel hit $5.85 a gallon on September 4. The national average for regular gasoline crossed $4.14, the highest at this time of year in recorded history. The headlines tell you the Iran war disrupted oil supply, which sounds like a straightforward story: less crude means higher prices means energy stocks go up.

But that story misses the real profit engine driving the entire energy sector's rally this year. The number that matters isn't the price of crude oil. It's the gap between crude and the fuel you actually buy — the refining margin, called the "crack spread."

On July 16, the crack spread hit $70 a barrel — a record. That means for every three barrels of crude a refiner bought, they earned roughly $70 in profit by converting it into two barrels of gasoline and one barrel of diesel.

You didn't see $70 in the headlines. You saw it at the pump. And now the question for investors is whether the companies that collected it can keep collecting it — or whether you're about to buy the top of the most compressed earnings spike in energy history.

The refining crisis is the real story

Here's what the Iran war actually did to the energy system. It didn't just raise crude oil prices — though it did that too, pushing Brent from roughly $70 a barrel before the February 28 conflict to over $100 last week. The war shattered the world's ability to process crude into fuel.

The Strait of Hormuz, which carries one-fifth of the world's crude supply, was effectively blockaded. Nine major refineries across the Gulf region — in Bahrain, Kuwait, and Saudi Arabia — were damaged or shut down. Meanwhile, Ukrainian drone strikes took out at least 18 refineries in Russia over four years. Russia banned most fuel exports, eliminating roughly 10 percent of global diesel supply overnight.

The result: global refinery output fell by an estimated 4.5 million barrels per day in the second quarter — a 5.4 percent contraction. At the same time, U.S. refiners were already running at their "practical operating ceiling", deferring maintenance and increasing the risk of unplanned outages. China had banned refined product exports for months. A refinery exploded in Australia. Valero's own Port Arthur facility in Texas lost multiple units to a major fire.

JPMorgan's Natasha Kaneva put it plainly: the shock is a "refining story rather than simply a crude supply story". The bottleneck isn't how much crude is available. It's how much of it can be turned into the gasoline, diesel, and jet fuel the economy needs.

When supply of refined products collapses and demand stays steady, the margin between crude and fuel explodes. That's the crack spread. And it hasn't just climbed — it has shattered every historical reference point.

The ultra-low sulfur diesel crack spread alone hit a record $93.84 per barrel on August 10. Gasoline crack spreads reached $60. In the first half of the year, gasoline prices rose 98 percent while crude oil prices rose only 44 percent. The gap is where the profit lives.

Who collected the check

The companies sitting closest to the crack spread are the three largest independent U.S. refiners: Marathon Petroleum, Valero, and Phillips 66. They don't drill oil — they buy it and convert it into fuel. When the margin widens, their profit grows dollar for dollar.

In the second quarter, the three earned a combined $12.6 billion in profit — the highest total since the 2022 energy crisis. They returned $6.3 billion to shareholders through dividends and buybacks, more than double the $2.6 billion they paid out in the same quarter a year earlier.

The stock market rewarded them aggressively. Marathon shares more than doubled in 2026, up roughly 110 percent through late August. Valero rose nearly 98 percent. Phillips 66 gained 75 percent. The energy sector ETF, XLE, posted a record 14-week winning streak, up 32 percent for the year.

But the integrated giants — ExxonMobil and Chevron — collected just as hard. They own refineries, pipelines, and drilling operations, so the price surge flowed through every part of their business. Exxon reported $14.5 billion in Q2 profit, more than doubling from the year prior. Its refining unit alone earned $5.5 billion, up from $1.4 billion, driven by record refining margins. Chevron's profit jumped nearly fivefold to $12.1 billion. ConocoPhillips, a pure upstream producer, posted $3.24 per share in adjusted earnings against estimates of roughly $2.90, on $19.5 billion in revenue that rose 32 percent year over year.

Every energy company that processes oil earned a windfall. The question is what happens to those earnings when the wind stops blowing.

The valuation problem nobody is pricing in

Energy stocks have surged. But the multiples tell you that the market has already decided this windfall is permanent.

Look at the forward price-to-earnings ratios — the multiples based on what analysts expect these companies to earn next year. Valero trades at a forward P/E of 474, according to current market data. Marathon sits at 48. These are not typos. A forward P/E of 474 means analysts' earnings forecasts for next year are tiny compared to the current stock price — which in turn means the market is betting that Q2-level margins persist and any decline is already baked in. Or that Q2 was just the beginning.

The integrated majors look less extreme but still reflect the mood. ExxonMobil's forward P/E is 23 (per current market data), supported by $30.6 billion in trailing twelve-month free cash flow and a $679 billion market cap. Chevron's forward P/E is 35, backed by $27 billion in free cash flow and a $420 billion market cap. ConocoPhillips trades at a forward P/E of 17 — the cheapest of the group — with $10 billion in free cash flow and a $165 billion market cap.

The forward P/E isn't wrong because it's high. It's dangerous because it tells you what future earnings must look like to justify today's price. A forward P/E of 474 doesn't mean Valero is expensive because it's a bad company. It means the stock has already climbed so far on a quarter of extraordinary profit that next year's earnings — even if strong — barely register against the current valuation. You're not buying the earnings you just saw. You're buying the hope that earnings stay elevated when every cycle in refining history says they won't.

The companies themselves are acting like they expect margins to hold. Marathon plans to repurchase roughly 20 percent of its market value — about $18 billion — through the end of next year. Valero authorized a new $5 billion buyback program on top of remaining capacity from a prior $2.5 billion authorization. Phillips 66 approved a $10 billion increase to its repurchase plan in July.

Buybacks are capital discipline when margins are high. They're also the single fastest way to amplify earnings per share on the way down — when the denominator shrinks right before the numerator does.

The earnings cliff

Every refining cycle has a landing. This one has three triggers lined up at once.

Seasonal demand fades from summer driving to fall, then winter heating. Refiners have been deferring maintenance to run at maximum capacity — a strategy that works until a single unplanned outage removes a critical unit. And the geopolitical shock that started this cycle has a resolution path, not a permanent state. If the Iran conflict cools and the Strait of Hormuz reopens, Gulf refineries restart, Russia resumes diesel exports, and China returns to the market, the global refining capacity gap that created this margin collapse closes.

Even if the conflict persists, the market adapts. U.S. production is climbing — the EIA raised its 2027 forecast to 14.3 million barrels per day. Companies are building alternative shipping routes. China, which had cut imports dramatically, is back buying — August crude imports rose 6.2 percent from July. The SPR is at a record low, which limits government firepower, but it also means the cushion has already been spent. The remaining upside from reserve releases is gone.

What the market is not pricing in is the asymmetry. If oil stays above $100 and margins hold, the upside from here for these stocks is limited by the buybacks already committed and the valuation already inflated. If crude retreats to $75 and the crack spread compresses from $70 to $40 — both entirely plausible in a scenario where conflict eases and capacity recovers — the earnings drop through multiple companies simultaneously would trigger margin compression, reduced buyback authority, forced selling from investors who chased the rally, and a valuation re-rating.

Chevron's CFO said the company isn't changing spending plans because of volatility. That's the right move for management. It's the wrong assumption for a shareholder who paid record multiples expecting those margins to be structural.

What you're actually buying

Energy stocks in 2026 are the rare sector where the business news, the headlines, and the stock charts all point in the same direction. The war disrupted supply. Diesel hit a record. Refiners earned record profits. The stocks surged. It feels like momentum you can still ride.

But the crack spread is a cyclical margin. It widened because refining capacity vanished — from war damage, export bans, deferred maintenance, and a single choke point that one ceasefire can reopen. The $70 margin is not a new floor. It is a temporary ceiling created by supply destruction. And the market has priced it in anyway.

The integrated majors with balanced upstream and downstream operations — ExxonMobil, Chevron, ConocoPhillips — are less exposed to a sudden margin collapse. They still benefit from high crude prices even when refining margins compress. The pure refiners — Valero, Marathon, Phillips 66 — are entirely dependent on the spread staying wide. Their profits grow and shrink with it. Their forward valuations assume it won't.

If you're watching these stocks from the sidelines, the question isn't whether energy companies made historic profits this year. They did. The question is whether you're paying record prices to buy the cycle after the record has already been set — and whether you've considered what $70 a barrel becomes when the world's refineries come back online.