What Happens To ExxonMobil Stock If Refining Profits Fade?
The worry for ExxonMobil (XOM) holders is that its refineries stop earning high margins. Management said in late July that the Strait closure keeps about 3 million barrels a day of refining capacity off the market. The second quarter alone supplied $14.5 billion of the $32.8 billion ExxonMobil earned over the last twelve months. How much of that profit rests on refining, and what would you lose if its margins fell back?
Three Things Could Squeeze ExxonMobil’s Refining Profits
The risks come from the market, from ExxonMobil’s own plants and from European governments. On the late-July call, management said the market benefit from the disruption was real. It also said it expects a very robust refining market with very high margins to continue. That view depends on refining supply staying short. The market risk is that the shortage ends.
ExxonMobil’s refinery in Joliet, Illinois, reported a power outage in mid-September. Days later, the company said floodwater had overwhelmed a pump there.
Windfall taxes came up on the same call, where an analyst noted that one European country had approved them on refining. Management said ExxonMobil cancelled planned European investments the last time such a tax passed. All three risks matter only as much as refining matters to ExxonMobil’s earnings.
How Big Is Refining In ExxonMobil’s Profits?
Refining supplies about 23% of ExxonMobil’s business-line earnings, management said, up from about 9% five years ago. That business is reported as Energy Products. It is still the biggest business by sales, with revenue of $290.3 billion in 2025. The rest of the profit comes from oil and gas production, chemicals, and specialty products. So a refining fade would reach about a quarter of business-line earnings, not the whole business.
The price you pay depends on which earnings you count. A price-to-earnings multiple is the share price divided by a year of earnings per share. The stock trades at 11.7 times the second quarter’s annualized earnings—a rate that reflects Q2’s unusually strong performance. If earnings instead revert to the last twelve months’ overall level, you are paying 20.7 times earnings, against 22.4 for the S&P 500. That twelve-month figure already includes the strong second quarter. So the next question is how much cash ExxonMobil has to absorb a softer year.
How Much Cash Flow Does ExxonMobil Generate For A Softer Year?
ExxonMobil produced $30.6 billion of free cash flow over the last twelve months. That total also includes the strong second quarter. Free cash flow is the cash left after spending on wells, plants, and equipment. ExxonMobil’s operating profit covers its interest bill 59.5 times, so debt is not where the strain would show.
Past market shocks give a sense of scale, though none of them was a refining downturn. The deepest of the three recent shocks our data covers, out of five, was the 2023 regional banking crisis. From peak to trough, the shares fell 15.0%, against 6.7% for the S&P 500. A $10,000 holding would have been worth about $8,500 at the low. Neither the cash nor past falls will tell you when refining profits start to slip.
Where Would You See Refining Profits Slip First?
You would see it first in the third-quarter report. Management said Gulf Coast refinery reliability exceeded 95% in the second quarter; a drop there would signal broad output loss. Meanwhile, any specific cost from the September problems at the Joliet, Illinois plant will also surface in that report.
Europe is the next place to look. A windfall tax in a second European country would widen the tax risk. Management already calls such taxes misguided policy.
On the other side, Errea Wittu, ExxonMobil’s fifth production ship for Guyana, is due to start by the end of the year. An on-time start would add oil output even if refining profits fade. None of these markers predict where margins go. They show whether a fade is starting, and what could offset it. Refining is the slice at stake, about a quarter of ExxonMobil’s business-line earnings by management’s count.
How To Act On XOM?
