Star Bulk Carriers Corp.

SBLKdata completeness 88%17 fiscal years on file
The thesis, from the filings

Star Bulk Carriers Corp. earns about 25% on invested capital, far above its ~9% cost of capital, but has diluted owners by 14% over 5 years — a real edge showing up in the numbers. The estimate methods put fair value between $26.4 and $41.61 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$1.43B1$1.44B2$949.3M3$1.27B3$1.04B3
Net income$680.5M4$566M5$173.6M6$304.7M6$84.2M6
Operating cash flow$767.1M7$769.9M8$335.8M9$471.2M9$295.9M9
Capital expenditure$130.1M10$25.4M11$18.1M12$55.1M12$84M12
Free cash flow (derived)$636.9M7,10$744.5M8,11$317.7M9,12$416.1M9,12$211.9M9,12
Total debt—————
Cash & equivalents$450.3M13$269.8M14$227.5M15$425.1M15$488.5M15
Diluted shares101.5M102.5M98.9M108.7M115.4M

Superscripts are receipts. Each links to the SEC filing the number came from (full list at the bottom). A derived or summed figure cites every filing line it was built from.

ii. Your slice — ownership made literal
If you owned
shares
Net assets behind them
$212.2
your share of equity
Profit it earned you last year
$7.29
Free cash flow it threw off
$18.36
Debt you’d be carrying
—

10 shares is a claim on $212.2 of net worth that earned you $7.29 and generated $18.36 of cash last year.

iii. Is this a good business?
Moat signal · return on invested capital
25% avg · 5y
FY21 45%FY22 35%FY23 17%FY24 19%FY25 8%

It earned about 25% 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
+14% shares · 5y

Share count is up 14% over 5 years — owners have been diluted. Worth asking what they got for it.

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 v0.6.0

The 3 estimate methods that apply put fair value between $26.4 and $41.61 a share. They rest on different assumptions, so where they diverge is the story; the Graham Number is a conservative ceiling on what a defensive investor should pay, not a target.

$38.86
assumptions (10)
  • Risk-free rate (10Y Treasury)5.00%
  • Equity risk premium5.00%
  • Beta (β)1.00
  • Equity share of capital85.0%
  • Debt spread over risk-free1.50%
  • Tax rate21.0%
  • Terminal growth2.50%
  • Projection period10 years
  • FCF growth0.0%
  • Starting free cash flow$317.7M
$41.61
assumptions (10)
  • Risk-free rate (10Y Treasury)5.00%
  • Equity risk premium5.00%
  • Beta (β)1.00
  • Equity share of capital85.0%
  • Debt spread over risk-free1.50%
  • Tax rate21.0%
  • Terminal growth2.50%
  • Projection period5 years
  • FCF growth0.0%
  • Starting free cash flow$317.7M
$26.4
assumptions (8)
  • Risk-free rate (10Y Treasury)5.00%
  • Equity risk premium5.00%
  • Beta (β)1.00
  • Equity share of capital85.0%
  • Debt spread over risk-free1.50%
  • Tax rate21.0%
  • Normalized earnings$304.7M
  • Growth assumed0.0%
$18.83
assumptions (1)
  • Graham multiplier (P/E × P/B)22.5×

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 years0.0%
Discount rate (WACC)9.27%
Terminal growth2.5%
At your growth, a share is worth $41.61
The three cases
Bear0.0%$41.61
Base0.0%$41.61
Bull5.0%$50.6

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

Default growth 0.0%= 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.

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Sources — the receipts
  1. 20-F filed 2024-03-13 · period ending 2021-12-31 · accession 0000950157-24-000400 (Revenues)
  2. 20-F filed 2025-03-19 · period ending 2022-12-31 · accession 0000950157-25-000241 (Revenues)
  3. 20-F filed 2026-03-19 · periods ending 2023-12-31, 2024-12-31, 2025-12-31 · accession 0000950157-26-000397 (Revenues)
  4. 20-F filed 2024-03-13 · period ending 2021-12-31 · accession 0000950157-24-000400 (NetIncomeLoss)
  5. 20-F filed 2025-03-19 · period ending 2022-12-31 · accession 0000950157-25-000241 (NetIncomeLoss)
  6. 20-F filed 2026-03-19 · periods ending 2023-12-31, 2024-12-31, 2025-12-31 · accession 0000950157-26-000397 (NetIncomeLoss)
  7. 20-F filed 2024-03-13 · period ending 2021-12-31 · accession 0000950157-24-000400 (NetCashProvidedByUsedInOperatingActivities)
  8. 20-F filed 2025-03-19 · period ending 2022-12-31 · accession 0000950157-25-000241 (NetCashProvidedByUsedInOperatingActivities)
  9. 20-F filed 2026-03-19 · periods ending 2023-12-31, 2024-12-31, 2025-12-31 · accession 0000950157-26-000397 (NetCashProvidedByUsedInOperatingActivities)
  10. 20-F filed 2024-03-13 · period ending 2021-12-31 · accession 0000950157-24-000400 (PaymentsToAcquirePropertyPlantAndEquipment)
  11. 20-F filed 2025-03-19 · period ending 2022-12-31 · accession 0000950157-25-000241 (PaymentsToAcquirePropertyPlantAndEquipment)
  12. 20-F filed 2026-03-19 · periods ending 2023-12-31, 2024-12-31, 2025-12-31 · accession 0000950157-26-000397 (PaymentsToAcquirePropertyPlantAndEquipment)
  13. 20-F filed 2024-03-13 · period ending 2021-12-31 · accession 0000950157-24-000400 (CashAndCashEquivalentsAtCarryingValue)
  14. 20-F filed 2025-03-19 · period ending 2022-12-31 · accession 0000950157-25-000241 (CashAndCashEquivalentsAtCarryingValue)
  15. 20-F filed 2026-03-19 · periods ending 2023-12-31, 2024-12-31, 2025-12-31 · accession 0000950157-26-000397 (CashAndCashEquivalentsAtCarryingValue)