Marathon Petroleum
MPC on NYSE. Marathon Petroleum refines crude oil into fuels and sells them to drivers and businesses. Market value $121.7bn.
Price checks use the past 12 months to June 2026. Quality checks use five annual reports, the latest for the year to December 2025.
Should I look at this?
Worth a closer look
Why it could be worth it
What to watch out for
Nothing stood out in the numbers we check.
This is not advice. Check the numbers below.
For every $100 of what the whole company costs, it produced $10.60 of spare cash in the past 12 months. A savings account pays about $4.
You pay 10.4 years of operating profit for the business. The average large US company costs around 18.
Each dollar kept in the business earns 14 cents a year. Above 10 is good.
Quality score: 77 of 100. Price score: 100 of 100. Our list needs 70 on quality and 60 on price.
$433.47 a share, 168% above its 1-year low
Over the past year the price has ranged from $161.93 to $437.67.
Dividend: 0.9% a year
Paid every year for at least 5 years
Prices from Monday’s close (5 October).
Five years of cash, in billions
Spare cash swings from quarter to quarter here: $12.9 billion in the past 12 months, $4.8 billion in the year to December 2025.
| Revenue | |||||
| Revenue | $120.0bn | $177.5bn | $148.4bn | $138.9bn | $132.7bn |
| Operating margin | |||||
| Operating margin | 3.6% | 12.1% | 9.8% | 4.9% | 6.2% |
| Debt to equity | |||||
| Debt to equity | 0.99 | 0.98 | 1.13 | 1.57 | 1.92 |
| Shares outstanding | |||||
| Shares outstanding | 0.47bn | 0.38bn | 0.32bn | 0.30bn | 0.28bn |
Health checks
- Free cash flow positive5 of 5 years
- Accounting looks honest (Beneish)Nothing unusual
- Financial strength (Piotroski)6 of 8 checks we could run
- Profit backed by cash (accruals)Yes
- Debt1.92× equity
- Revenue growth, five yearsStrong, 13.7% a year
- Buying back its own sharesYes, 40% fewer since 2021
The quarter to June 2026
How the business did, compared with the same quarter a year earlier.
- Sales: $52 billion last quarter, up 54% on a year ago.
- Profit: $5.1 billion, up 323% on a year ago.
- It keeps 9 cents of each $1 of sales as operating profit, up from 4 cents a year earlier.
- Spare cash over the past 12 months: $12.9 billion, up from $3.6 billion.
- 6% fewer shares than a year ago. Each share owns a bit more of the company.
- Debt is $25.5 billion more than cash, down from $27.3 billion a year ago.
- Sales grew on a year ago in 2 of the last 4 quarters.
| Quarter to | Amount |
|---|---|
| September 2024 | $35.1bn |
| December 2024 | $33.1bn |
| March 2025 | $31.5bn |
| June 2025 | $33.8bn |
| September 2025 | $34.8bn |
| December 2025 | $32.6bn |
| March 2026 | $34.2bn |
| June 2026 | $52.0bn |
| Quarter to | Amount |
|---|---|
| September 2024 | $622m |
| December 2024 | $371m |
| March 2025 | -$74m |
| June 2025 | $1.2bn |
| September 2025 | $1.4bn |
| December 2025 | $1.5bn |
| March 2026 | $511m |
| June 2026 | $5.1bn |
From the company's quarterly reports to the SEC.
Dates
- Next results (estimated)
- 3 November 2026
- Last annual report (10-K)
- 26 February 2026
- Next quarterly (estimated, 10-Q)
- 3 November 2026
Who owns it
12 long-term investors we follow own it, unchanged from 12 last quarter. 1,945 funds in all.
- Hosking PartnersJeremy Hosking
- Value
- $53m
- Share of fund
- 1.8%
- First Manhattan Co.First Manhattan partners
- Value
- $4m
- Share of fund
- <0.1%
- GAMCO InvestorsMario Gabelli
- Value
- $2m
- Share of fund
- <0.1%
- Horizon KineticsMurray Stahl
- Value
- $1m
- Share of fund
- <0.1%
- Mairs & PowerAndy Adams
- Value
- $355,381
- Share of fund
- <0.1%
- Matrix Asset AdvisorsDavid Katz
- Value
- $218,342
- Share of fund
- <0.1%
| Fund | Value | Share of that fund | Change |
|---|---|---|---|
| Boston PartnersBoston Partners team | $906m | 0.8% | Cut |
| LSV Asset ManagementJosef Lakonishok | $369m | 0.7% | Added |
| Harris Associates (Oakmark)Bill Nygren | $59m | <0.1% | Cut |
| Hosking PartnersJeremy Hosking | $53m | 1.8% | |
| Gotham Asset ManagementJoel Greenblatt | $25m | <0.1% | Added |
| Polaris Capital ManagementBernard Horn | $24m | 2.3% | Cut |
| GMOJeremy Grantham | $7m | <0.1% | Added |
| First Manhattan Co.First Manhattan partners | $4m | <0.1% | |
| GAMCO InvestorsMario Gabelli | $2m | <0.1% | |
| Horizon KineticsMurray Stahl | $1m | <0.1% | |
| Mairs & PowerAndy Adams | $355,381 | <0.1% | |
| Matrix Asset AdvisorsDavid Katz | $218,342 | <0.1% |
Largest holders overall
- BlackRock$6.6bnAdded
- Vanguard Capital Management$4.9bn
- State Street$4.7bnCut
- Vanguard Portfolio Management$4.0bn
- Geode Capital Management$2.1bnAdded
- Morgan Stanley$1.5bnCut
- Raymond James Financial$1.5bn
- FMR$1.4bnAdded
- Bank of New York Mellon$1.0bn
- Boston Partners$906mCut
From 13F filings for the quarter ended 30 June 2026.
Big holders and activists
3 investors own more than 5%.
- Vanguard Capital ManagementPassive investor7.5%Since 31 March 2026
- BlackRock, Inc.Passive investor6.8%Since 31 March 2025
- Vanguard Portfolio ManagementPassive investor5.3%Since 31 March 2026
- The Vanguard GroupPassive investorSold down below 5%Since 13 March 2026
| Holder | Stake | Since | |
|---|---|---|---|
Vanguard Capital Management Passive investor | 7.5% | 31 March 2026 | |
BlackRock, Inc. Passive investor | 6.8% | 31 March 2025 | |
Vanguard Portfolio Management Passive investor | 5.3% | 31 March 2026 | |
The Vanguard Group Passive investor | Sold down below 5% | 13 March 2026 |
From Schedule 13D and 13G filings: anyone owning more than 5% must file one.
What insiders did
No insider bought shares on the open market in the last 12 months. 5 sold $14m, $6m of it under preset trading plans.
- Lyon Shawn MSVP Log & Storage, MPLX GP LLCSold
- Date
- 31 August 2026
- Shares
- 1,000
- Price
- $375.75
- Value
- $375,750
- Lyon Shawn MSVP Log & Storage, MPLX GP LLCSold
- Date
- 28 August 2026
- Shares
- 425
- Price
- $368.51
- Value
- $156,617
- Brzezinski Erin MVP and ControllerSold
- Date
- 27 August 2026
- Shares
- 570
- Price
- $362.79
- Value
- $206,790
- Benson Molly RChief Legal Ofc & Corp SecSoldunder a preset trading plan
- Date
- 17 August 2026
- Shares
- 17,196
- Price
- $358.57
- Value
- $6m
- Lyon Shawn MSVP Log & Storage, MPLX GP LLCSold
- Date
- 13 August 2026
- Shares
- 2,500
- Price
- $350.00
- Value
- $875,000
- Henschen Michael A IIEx VP, RefiningSold
- Date
- 12 August 2026
- Shares
- 6,011
- Price
- $341.56
- Value
- $2m
- Henschen Michael A IIEx VP, RefiningSold
- Date
- 4 June 2026
- Shares
- 6,336
- Price
- $268.83
- Value
- $2m
- Hessling Ricky D.Chief Commercial OfficerSold
- Date
- 13 May 2026
- Shares
- 1,000
- Price
- $250.00
- Value
- $250,000
- Hessling Ricky D.Chief Commercial OfficerSold
- Date
- 13 March 2026
- Shares
- 1,626
- Price
- $228.18
- Value
- $371,021
- Hessling Ricky D.Chief Commercial OfficerSold
- Date
- 12 March 2026
- Shares
- 1,037
- Price
- $229.08
- Value
- $237,554
| Date | Who | Did | Shares | Price | Value |
|---|---|---|---|---|---|
| 31 August 2026 | Lyon Shawn M SVP Log & Storage, MPLX GP LLC | Sold | 1,000 | $375.75 | $375,750 |
| 28 August 2026 | Lyon Shawn M SVP Log & Storage, MPLX GP LLC | Sold | 425 | $368.51 | $156,617 |
| 27 August 2026 | Brzezinski Erin M VP and Controller | Sold | 570 | $362.79 | $206,790 |
| 17 August 2026 | Benson Molly R Chief Legal Ofc & Corp Sec | Sold under a preset trading plan | 17,196 | $358.57 | $6m |
| 13 August 2026 | Lyon Shawn M SVP Log & Storage, MPLX GP LLC | Sold | 2,500 | $350.00 | $875,000 |
| 12 August 2026 | Henschen Michael A II Ex VP, Refining | Sold | 6,011 | $341.56 | $2m |
| 4 June 2026 | Henschen Michael A II Ex VP, Refining | Sold | 6,336 | $268.83 | $2m |
| 13 May 2026 | Hessling Ricky D. Chief Commercial Officer | Sold | 1,000 | $250.00 | $250,000 |
| 13 March 2026 | Hessling Ricky D. Chief Commercial Officer | Sold | 1,626 | $228.18 | $371,021 |
| 12 March 2026 | Hessling Ricky D. Chief Commercial Officer | Sold | 1,037 | $229.08 | $237,554 |
From Form 4 filings: insiders must report trades in their own company's shares within two days.
Warning signs in its filings
Problems the company itself reported to the SEC, in its own words.
None of the warning signs we check for were found.
We look for five warning signs: doubt it can keep going, weak checks on its own accounts, a notice that its past accounts can't be relied on, a change of auditor, and one customer bringing in a big share of sales. We don't check lawsuits, investigations or debt yet.
We checked the auditor's report, internal controls, restatement notices, auditor changes and big customers in the 10-K filed 26 Feb 2026, plus the 10-Q filed 4 Aug 2026 and 5 later 8-Ks.
A 10-K is the yearly report every US company files with the SEC. An 8-K is a short notice of a big event.
What could go wrong
Cheap for a reason is the question the numbers cannot answer.
Whether the price already reflects the risks is what the deep dive is for.
What changed in the risks this year
Companies must list what could hurt them each year. These are the parts that changed since last year’s report.
We expect to continue to incur substantial capital expenditures and operating costs to meet the requirements of evolving environmental and other laws or regulations. Changes to the federal government’s policies and operations could lead to increased regulatory uncertainty and volatility and increased state regulation, which may impact our business, financial condition and results of operations.
Could happenIn 2025, the U.S. presidential administration announced wide-ranging policy changes and issued numerous executive actions. The U.S. EPA and other federal agencies began proposing and promulgating regulations consistent with the administration’s policy changes. If the federal government relaxes or revokes certain environmental regulations, states may pass laws that vary in stringency and scope by state, creating a patchwork of regulation. For example, various states have passed laws regulating the use of materials containing PFAS and setting action levels for the remediation of certain PFAS. We cannot predict the extent to which states will pass such legislation, or the ultimate effect these state laws will have on our business, financial condition and results of operations.
Read moreIndustry, market, technological and regulatory developments regarding emissions, fuel efficiency and alternative fuel vehicles may decrease demand for liquid transportation fuels.
Could happenDevelopments aimed at reducing vehicle emissions, increasing vehicle efficiency or reducing the sale of new internal combustion engine vehicles may decrease the demand and may increase the cost for our liquid transportation fuels. Government mandates or incentives, industry and technological developments and consumer sentiment with respect to liquid transportation fuels may alter fuels or energy preferences or make alternative fuel vehicles more desirable and result in greater market penetration of such vehicles or otherwise decrease demand for our liquid transportation fuels. For example, the federal government through NHTSA and the EPA promulgate rules that require vehicle manufacturers to increase the fuel efficiency standards of liquid transportation fuels vehicles. The EPA has finalized a rule that reduces its current vehicle standards by eliminating regulation of GHG emissions. The new, reduced standards have been challenged in court.
Read moreClimate change and GHG emission regulation could affect our operations, energy consumption patterns and regulatory obligations, any of which could adversely impact our business, results of operations and financial condition.
Could happenCalifornia has also enacted cap-and-invest programs, which set statewide limits on GHG emissions and caps that decline each year. CARB is currently developing regulations to implement the changes to the Cap-and-Invest program. We are unable to estimate the impact of these programs but requirements to drastically reduce GHG emissions in California could increase our operating costs, require additional capital expenditures, reduce the competitiveness of our California refinery and renewable fuel facility and our Washington refinery and affect their long term outlook.
Read moreSignificant acquisitions, including the Northwind Midstream Acquisition and the BANGL Acquisition, will involve the integration of new assets or businesses and may present substantial risks that could adversely affect our business, financial conditions, results of operations and cash flows.
Could happenSignificant acquisitions, including the Northwind Midstream Acquisition and the BANGL Acquisition, involving the addition of new assets or businesses will present risks, which may include, among others:
The deep dive
Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.
- What the business is worth, as a range, and the margin of safety at today’s price
- Prices to start buying, buy, and buy hard
- The three things that would make this a mistake
- Every number footnoted to the filing it came from
Your first deep dive is free.
Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.