Marathon Petroleum Corp

MPCdata completeness 100%17 fiscal years on file
The thesis, from the filings

Marathon Petroleum Corp earns about 48% on invested capital, far above its ~9% cost of capital, and has bought back 52% of its shares over 5 years — the marks of a durable business run for its owners. The estimate methods put fair value between $327.85 and $1,199.42 a share.Whether it’s worth owning at today’s price is the last question — and yours to answer, below.

i. The business — what you’d actually own
FigureFY 2021FY 2022FY 2023FY 2024FY 2025
Revenue$120B1$177.5B2$148.4B3$138.9B3$132.7B3
Net income$9.74B4$14.5B5$9.68B6$3.45B6$4.05B6
Operating cash flow$4.36B7$16.4B8$14.1B9$8.67B9$8.25B9
Capital expenditure$1.46B10$2.42B11$1.89B12$2.53B12$3.49B12
Free cash flow (derived)$2.9B7$13.9B8$12.2B9$6.13B9$4.77B9
Total debt$571M13$1.07B14$1.95B15$3.05B16$2.37B16
Cash & equivalents$5.29B17$8.63B18$5.44B19$3.21B20$3.67B20
Diluted shares638.0M516.0M409.0M341.0M306.0M

Superscripts are receipts. Each links to the SEC filing the number came from (full list at the bottom).

ii. Your slice — ownership made literal
If you owned
shares
Net assets behind them
$565.82
your share of equity
Profit it earned you last year
$132.25
Free cash flow it threw off
$155.78
Debt you’d be carrying
$77.48

10 shares is a claim on $565.82 of net worth that earned you $132.25 and generated $155.78 of cash last year, against $77.48 of debt.

iii. Is this a good business?
Moat signal · return on invested capital
48% avg · 5y
FY21 18%FY22 84%FY23 58%FY24 35%FY25 44%

It earned about 48% on invested capital, year after year, against a ~9% cost of capital — the footprint of real pricing power. Competition usually drags returns like this back down; here it hasn't.

seeing a moat in the numbers →
Management signal · capital allocation
−52% shares · 5y

Share count is down 52% over 5 years — management has been buying back stock, quietly handing owners a bigger slice. Total debt has risen 315% over the same window.

reading capital allocation →

Signals, not verdicts — read from the filings above. Numbers don’t prove a moat; they show its footprint. You decide.

iv. What it’s worth — engine v0.1.0

The 3 estimate methods that apply put fair value between $327.85 and $1,199.42 a share. They rest on different assumptions, so where they diverge is the story; the Graham Number is a stricter floor, not a target.

DCF · Growth Exit 10Y
$1,199.42
assumptions (10)
  • riskFreeRate4.7%
  • equityRiskPremium5.0%
  • beta100.0%
  • equityWeight85.0%
  • costOfDebtSpread1.5%
  • taxRate21.0%
  • terminalGrowth2.5%
  • projectionYears10
  • fcfGrowth20.0%
  • fcfBase$6.13B
DCF · Growth Exit 5Y
$657.6
assumptions (10)
  • riskFreeRate4.7%
  • equityRiskPremium5.0%
  • beta100.0%
  • equityWeight85.0%
  • costOfDebtSpread1.5%
  • taxRate21.0%
  • terminalGrowth2.5%
  • projectionYears5
  • fcfGrowth20.0%
  • fcfBase$6.13B
Earnings Power Value
$327.85
assumptions (8)
  • riskFreeRate4.7%
  • equityRiskPremium5.0%
  • beta100.0%
  • equityWeight85.0%
  • costOfDebtSpread1.5%
  • taxRate21.0%
  • normalizedEarnings$9.68B
  • growthAssumed0.0%
Graham Number
$129.73
assumptions (1)
  • grahamMultiplier2250.0%

Different models answer different questions — which to trust when →

v. The price question — last, on purpose
Is today’s price fair?
See live price ↗
Type a price. The ledger answers.
Or set your own belief
FCF growth, next 5 years20.0%
Discount rate (WACC)8.93%
Terminal growth2.5%
At your growth, a share is worth $657.6
The three cases
Bear0.0%$290.57
Base20.0%$657.6
Bull20.0%$657.6

Bear/base/bull growth = 0% / filed history / history + 5pp. Type a price to see the return each case implies.

Default growth 20.0%= this company’s own filed history (median-to-median FCF CAGR, clamped 0–20%). Your adjustments are recorded anonymously. They become the “what do owners actually believe” dataset.

Sources — the receipts
  1. 10-K · period ending 2021-12-31 · accession 0001510295-24-000015 (RevenueFromContractWithCustomerExcludingAssessedTax)
  2. 10-K · period ending 2022-12-31 · accession 0001510295-25-000012 (RevenueFromContractWithCustomerExcludingAssessedTax)
  3. 10-K · period ending 2023-12-31 · accession 0001510295-26-000009 (RevenueFromContractWithCustomerExcludingAssessedTax)
  4. 10-K · period ending 2021-12-31 · accession 0001510295-24-000015 (NetIncomeLoss)
  5. 10-K · period ending 2022-12-31 · accession 0001510295-25-000012 (NetIncomeLoss)
  6. 10-K · period ending 2023-12-31 · accession 0001510295-26-000009 (NetIncomeLoss)
  7. 10-K · period ending 2021-12-31 · accession 0001510295-24-000015 (NetCashProvidedByUsedInOperatingActivities)
  8. 10-K · period ending 2022-12-31 · accession 0001510295-25-000012 (NetCashProvidedByUsedInOperatingActivities)
  9. 10-K · period ending 2023-12-31 · accession 0001510295-26-000009 (NetCashProvidedByUsedInOperatingActivities)
  10. 10-K · period ending 2021-12-31 · accession 0001510295-24-000015 (PaymentsToAcquirePropertyPlantAndEquipment)
  11. 10-K · period ending 2022-12-31 · accession 0001510295-25-000012 (PaymentsToAcquirePropertyPlantAndEquipment)
  12. 10-K · period ending 2023-12-31 · accession 0001510295-26-000009 (PaymentsToAcquirePropertyPlantAndEquipment)
  13. 10-K · period ending 2021-12-31 · accession 0001510295-23-000012 (DebtCurrent)
  14. 10-K · period ending 2022-12-31 · accession 0001510295-24-000015 (DebtCurrent)
  15. 10-K · period ending 2023-12-31 · accession 0001510295-25-000012 (DebtCurrent)
  16. 10-K · period ending 2024-12-31 · accession 0001510295-26-000009 (DebtCurrent)
  17. 10-K · period ending 2021-12-31 · accession 0001510295-23-000012 (CashAndCashEquivalentsAtCarryingValue)
  18. 10-K · period ending 2022-12-31 · accession 0001510295-24-000015 (CashAndCashEquivalentsAtCarryingValue)
  19. 10-K · period ending 2023-12-31 · accession 0001510295-25-000012 (CashAndCashEquivalentsAtCarryingValue)
  20. 10-K · period ending 2024-12-31 · accession 0001510295-26-000009 (CashAndCashEquivalentsAtCarryingValue)