VLO — Q3 2026 Financial Report Analysis

Diesel margins tripled, pushing Valero's quarterly profit to $6.8 billion

Valero earned $6.83 billion for its shareholders in the third quarter of 2026, or $23.89 per diluted share, up from $1.10 billion ($3.53) a year earlier and almost double the $3.72 billion it earned in the second quarter. The cause is the same as last quarter, only larger: the price of diesel ran far ahead of the price of crude oil. On Valero's own market reference table, U.S. Gulf Coast diesel sold for $72.27 a barrel more than Brent crude, against $21.05 a year earlier. Valero's refineries ran at what CEO Lane Riggs called "near-record utilization rates", so it had close to the maximum volume to sell into those prices.

This analysis is based on the earnings release (Exhibit 99.1 to the 8-K filed October 22, 2026). The full 10-Q, which carries management's explanation of each change and its outlook, was not yet filed when this was written, so the release's tables are the source for every figure below.

The numbers

Operating margin is operating income divided by revenue: the share of sales left after running the business, before interest and tax. For a refiner it is a blunt measure, because revenue includes the full cost of the crude it buys. The refining margin per barrel says more: it is what Valero sells its fuels for minus what it pays for crude and other feedstocks, divided by the number of barrels it processed, before running costs and depreciation.

Why the margin tripled

A refiner's profit depends on the crack spread, the market price of a fuel minus the price of crude. Valero's reference table shows how far those spreads widened (per barrel, adjusted for the cost of renewable-fuel blending credits):

Crude rose by about $23 a barrel, but the Gulf Coast diesel spread rose by about $51 on top of that. That is why revenue rose $13.9 billion while the cost of materials rose only $6.6 billion, and why the Refining segment's margin rose by $7.0 billion to $10.73 billion. Diesel matters more than gasoline here: diesel spreads were roughly three times gasoline spreads, and distillates (mainly diesel and jet fuel) made up 1.16 million of the 2.99 million barrels a day Valero produced.

The release does not split the margin gain into its causes the way the 10-Q does (diesel, gasoline, crude differentials). Two crude-cost signals in the table cut in opposite directions:

• Light sweet crude was still expensive. Brent less Dated Brent was -$5.75, against -$0.91 a year ago. A negative number here means physical light crude cost more than the futures price that products are priced against. Sweet crude is Valero's largest feedstock (1.59 million barrels a day), so this is a cost. It was less severe than Q2's -$8.05.
• Heavy crude got cheaper. Western Canadian Select traded $16.49 below Brent, against $6.93 a year ago. Valero ran slightly more heavy sour crude than a year ago (512,000 vs 506,000 barrels a day), so it captured a little more of this than last quarter.

By region: every region at least doubled its margin

The 3.7% drop in total throughput is entirely the Benicia closure: Valero finished idling its Benicia, California refinery in April 2026, so West Coast volume fell by 140,000 barrels a day. Excluding the West Coast, the other three regions processed 2,853,000 barrels a day, about 1% more than a year ago, and total throughput was slightly above Q2's 2,950,000. The Gulf Coast ran 28,000 barrels a day more than a year ago, a sign that the Port Arthur refinery, shut by a fire in March, was running normally for the whole quarter. The release lists $4 million of Port Arthur repair costs in the quarter ($19 million this year).

The North Atlantic's $45.58 margin was the highest in the system, in line with North Atlantic diesel at $77 over Brent.

The other two businesses: profitable, but down from Q2

Renewable Diesel (Diamond Green Diesel, a 50/50 joint venture with Darling Ingredients that Valero consolidates in full) earned $353 million of operating income, against a $28 million loss a year earlier. Margin per gallon rose to $1.62 from $0.50 and sales volume rose 26% to 3.42 million gallons a day. Higher diesel prices (NYMEX diesel $4.33 a gallon vs $2.35) and higher biodiesel credit prices ($2.23 per RIN vs $1.13) did more than offset pricier feedstock (used cooking oil $0.76 a pound vs $0.62). But this was half of Q2's $717 million, with margin per gallon down from $2.52 and volume down from 3.8 million gallons a day. The release gives no reason for the sequential drop; the 10-Q should. Half of this segment's profit belongs to the partner, which is why $161 million of net income went to "noncontrolling interests" rather than Valero's shareholders.

Ethanol earned $272 million, up from $183 million, on a record 4.80 million gallons a day of production and a margin of $1.03 a gallon (vs $0.83). That is below Q2's $318 million and $1.15 a gallon, which included a catch-up of first-quarter clean fuel production credits. Corn was more expensive than a year ago ($4.78 a bushel vs $4.02), while ethanol sold for $2.10 a gallon vs $1.96.

Takeaway: Valero didn't run more crude this quarter: throughput was down 3.7% because of Benicia and roughly flat elsewhere. What changed was the price of diesel against crude, which pushed the margin per barrel to $39, three times last year's. Running at near-full rates matters most in a quarter like this one. The profit depends almost entirely on how long fuel stays scarce, and Valero is turning it into cash: $9.8 billion on hand, net debt at 4% of capital.

What the headline numbers hide

• Cash conversion was strong, and working capital worked against it this time. Operating cash flow was $6.93 billion against net income (including the partner's share) of $6.99 billion. That included a $526 million drag from working capital. Valero's adjusted figure, which strips out working capital and the DGD partner's $205 million share, was $7.25 billion, above the $6.83 billion of attributable profit. Unlike Q2, when working capital added $706 million, nothing here flatters the cash number.
• GAAP and adjusted earnings are essentially the same. Adjusted EPS of $23.90 is one cent above reported. The only adjustment was $4 million ($3 million after tax) of Port Arthur fire costs. Valero uses LIFO inventory accounting (last-in, first-out, which charges the most recent crude costs to the income statement), so the jump in crude prices did not create a large inventory gain; there was no LIFO adjustment this quarter.
• The year-ago quarter carried Benicia costs that are now gone. Q3 2025 included about $100 million of extra Benicia depreciation and $50 million of Benicia employee retention and separation costs. West Coast depreciation fell to $20 million from $173 million. That is roughly $150 million of the operating income increase, real but not operational.
• Buybacks explain under a tenth of the EPS jump. Diluted shares fell 7.8% to 285 million. At last year's share count, this quarter's profit would have been about $22.10 a share (our calculation), so roughly $1.79 of the $20.36 EPS increase came from the smaller share count. The effective tax rate was 23%, slightly lower than about 27% a year ago, a small help.
• Shareholder returns were half of cash flow. The release puts stockholder cash returns at 52% of adjusted operating cash flow; applied to the quarter's $7.25 billion that is about $3.8 billion (our calculation; the release does not state the dollar amount). Valero also repaid $526 million of maturing notes. Cash still rose to $9.84 billion from $4.69 billion at the end of 2025.
• Costs per barrel went up. Refining cash operating cost rose to $5.03 a barrel from $4.71, and G&A rose 25% to $308 million. Both are small next to a $26-a-barrel margin increase, but they would matter in a normal margin environment.
• No numeric guidance. Valero does not give earnings guidance, and the release contains no outlook section; the 10-Q's outlook was not yet available.

Did last time's read hold up?

Our Q2 report said to watch three things. The diesel crack and margin per barrel against $23.62: both went far higher, to $72 Gulf Coast diesel and a $39.24 margin, so the outages that drove Q2 did not ease. Whether sweet-crude costs kept eating into margins: they did, but less. Brent less Dated Brent narrowed to -$5.75 from Q2's -$8.05. The pace of buybacks: the diluted share count fell another 9 million shares in a single quarter, and payouts ran at 52% of cash flow while cash still piled up. We also expected Q3 volume to at least match Q2 with Port Arthur back and St. Charles adding capacity; throughput was 2,972,000 barrels a day vs 2,950,000, and the St. Charles FCC project was completed on schedule and within budget.

Outlook

The release itself offers no forward guidance. Management's points that bear on the next quarters:

• The St. Charles FCC optimization project is now running and, per the release, raises the refinery's ability to make higher-value products such as alkylate and gasoline. Q4 is the first full quarter with it.
• The quarterly dividend is $1.20 a share, up from $1.13 a year ago.
• Debt fell to $8.58 billion after $526 million of repayments, against $9.84 billion of cash: Valero now holds more cash than debt, though not more than debt plus its $2.42 billion of finance lease obligations.
• The Q2 10-Q's outlook (the most recent management view on file) expected global refining capacity to stay disrupted by outages in the Middle East and Russia and refined product inventories to stay low. Q3's spreads show that happened.

Our view: Nine-month earnings are $40.29 a share, and $36.51 of that came in Q2 and Q3. That shows how much of 2026's profit depends on a supply shock Valero doesn't control. Volume can't grow much from here (the refineries are near full, and Benicia is gone), so Q4 earnings will move with the diesel crack, up or down. A $72 Gulf Coast diesel spread is more than three times last year's level, and anything that restores Middle East or Russian supply would compress it quickly. What Valero controls is the balance sheet, and net of cash its debt is now just 4% of capital. What to watch in the Q4 release:

• the Gulf Coast diesel crack and Valero's margin per barrel against this quarter's $39.24
• whether the renewable diesel margin keeps falling from Q2's $2.52 and Q3's $1.62 a gallon
• how much of the $9.8 billion cash pile goes to buybacks rather than sitting on the balance sheet, as a read on how lasting management thinks these margins are.

Figures are from Valero's third-quarter 2026 earnings release (Exhibit 99.1 to the Form 8-K filed October 22, 2026), linked as the source filing. Segment commentary that only the 10-Q carries (the drivers of the margin change, the outlook section) is not yet available.