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5019 · Idemitsu Kosan
This is a quantitative scorecard. The numbers below are read directly from Idemitsu Kosan’s EDINET filing, in yen. The Japanese-language narrative, what the business does, its risks, what changed this year, is not machine-read here, so we do not paraphrase it. Find it on EDINET (code 5019) →
The record
What the business has done across the cycle, read straight from the EDINET filing: the multi-year record, and the walk from reported profit to the cash an owner could take out.
The record, 2017–2026
realized figures from each filing · older years to the left| 2017’17 | 2018’18 | 2019’19 | 2020’20 | 2021’21 | 2022’22 | 2023’23 | 2024’24 | 2025’25 | 2026’26 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Income statement | ||||||||||
| ¥3.19T | ¥3.73T | ¥4.43T | ¥6.05T | ¥4.56T | ¥6.69T | ¥9.46T | ¥8.72T | ¥9.19T | ¥8.11T | RevenueRevenue |
| — | — | — | 7% | 12% | — | — | — | 8% | 9% | Gross marginGross mgn |
| — | — | — | 7% | 9% | — | — | — | 6% | 7% | SG&A / revenueSG&A/rev |
| — | — | — | 0% | 0% | — | — | — | 0% | 0% | R&D / revenueR&D/rev |
| ¥135.2B | ¥201.3B | ¥179.3B | (¥3.9B) | ¥140.1B | ¥434.5B | ¥282.4B | ¥346.3B | ¥162.2B | ¥212.2B | Operating incomeOp. inc. |
| 4.2% | 5.4% | 4.1% | −0.1% | 3.1% | 6.5% | 3.0% | 4.0% | 1.8% | 2.6% | Operating marginOp. mgn |
| ¥88.2B | ¥162.3B | ¥81.5B | (¥22.9B) | ¥34.9B | ¥279.5B | ¥253.6B | ¥228.5B | ¥104.1B | ¥171.9B | Net incomeNet inc. |
| Cash flow & returns | ||||||||||
| ¥53.5B | ¥136.8B | ¥151.0B | (¥32.7B) | ¥170.5B | ¥146.1B | (¥32.8B) | ¥377.4B | ¥476.7B | ¥392.4B | Operating cash flowOp. cash |
| ¥70.2B | ¥67.9B | ¥61.6B | ¥94.9B | ¥98.2B | ¥104.8B | ¥104.4B | ¥99.2B | ¥95.7B | ¥96.0B | DepreciationDeprec. |
| (¥104.8B) | (¥93.5B) | ¥8.0B | (¥104.7B) | ¥37.4B | (¥238.2B) | (¥390.9B) | ¥49.7B | ¥277.0B | ¥124.5B | Working capital & otherWC & other |
| ¥41.5B | ¥58.1B | ¥76.3B | ¥118.6B | ¥121.1B | ¥94.7B | ¥85.6B | ¥70.9B | ¥86.6B | ¥154.9B | CapexCapex |
| 1.3% | 1.6% | 1.7% | 2.0% | 2.7% | 1.4% | 0.9% | 0.8% | 0.9% | 1.9% | Capex / revenueCapex/rev |
| ¥12.1B | ¥78.7B | ¥74.8B | (¥151.4B) | ¥49.4B | ¥51.4B | (¥118.4B) | ¥306.5B | ¥390.2B | ¥296.5B | Owner earningsOwner earn. |
| 0.4% | 2.1% | 1.7% | −2.5% | 1.1% | 0.8% | −1.3% | 3.5% | 4.2% | 3.7% | Owner earnings marginOE mgn |
| ¥12.1B | ¥78.7B | ¥74.8B | (¥151.4B) | ¥49.4B | ¥51.4B | (¥118.4B) | ¥306.5B | ¥390.2B | ¥237.6B | Free cash flowFCF |
| 0.4% | 2.1% | 1.7% | −2.5% | 1.1% | 0.8% | −1.3% | 3.5% | 4.2% | 2.9% | Free cash flow marginFCF mgn |
| ¥8.0B | ¥12.3B | ¥18.5B | ¥34.0B | ¥41.7B | ¥35.7B | ¥50.6B | ¥40.2B | ¥46.1B | ¥44.2B | Dividends paidDiv. paid |
| ¥0 | ¥1M | ¥55.9B | ¥13.2B | ¥25M | ¥33M | ¥13.1B | ¥57.4B | ¥165.3B | ¥2.3B | BuybacksBuybacks |
| 7% | 9% | 8% | -0% | 5% | 13% | 7% | 9% | 5% | 6% | ROICROIC |
| 14% | 18% | 9% | -2% | 3% | 19% | 16% | 13% | 7% | 11% | Return on equityROE |
| 13% | 17% | 7% | −5% | −1% | 17% | 12% | 10% | 4% | 8% | Retained to equityRetained/eq |
| Balance sheet | ||||||||||
| ¥90.1B | ¥86.8B | ¥90.7B | ¥129.3B | ¥131.0B | ¥139.0B | ¥103.1B | ¥136.9B | ¥164.3B | ¥157.1B | Cash & investmentsCash+inv |
| ¥327.4B | ¥486.2B | ¥453.3B | ¥593.7B | ¥602.7B | ¥870.5B | ¥841.8B | ¥919.0B | ¥817.3B | ¥841.8B | ReceivablesReceiv. |
| ¥430.9B | ¥535.6B | ¥586.6B | ¥622.9B | ¥694.5B | ¥1.06T | ¥1.31T | ¥1.38T | ¥1.27T | ¥1.38T | InventoryInvent. |
| ¥331.6B | ¥429.6B | ¥399.2B | ¥475.7B | ¥530.7B | ¥840.8B | ¥697.3B | ¥793.8B | ¥824.4B | ¥852.6B | Accounts payablePayables |
| ¥426.7B | ¥592.3B | ¥640.7B | ¥741.0B | ¥766.5B | ¥1.09T | ¥1.45T | ¥1.50T | ¥1.26T | ¥1.36T | Operating working capitalOper. WC |
| ¥959.8B | ¥1.21T | ¥1.23T | ¥1.55T | ¥1.67T | ¥2.37T | ¥2.73T | ¥2.92T | ¥2.65T | ¥2.97T | Current assetsCur. assets |
| ¥1.14T | ¥1.16T | ¥1.20T | ¥1.65T | ¥1.62T | ¥2.06T | ¥2.16T | ¥2.19T | ¥2.10T | ¥2.35T | Current liabilitiesCur. liab. |
| 0.8× | 1.0× | 1.0× | 0.9× | 1.0× | 1.1× | 1.3× | 1.3× | 1.3× | 1.3× | Current ratioCurr. ratio |
| ¥7.6B | ¥6.7B | ¥7.2B | ¥167.1B | ¥159.0B | ¥149.7B | ¥140.5B | ¥131.2B | ¥124.3B | ¥129.8B | GoodwillGoodwill |
| ¥2.64T | ¥2.92T | ¥2.89T | ¥3.89T | ¥3.95T | ¥4.60T | ¥4.87T | ¥5.01T | ¥4.78T | ¥5.33T | Total assetsAssets |
| ¥1.05T | ¥892.0B | ¥949.9B | ¥1.30T | ¥1.28T | ¥1.34T | ¥1.46T | ¥1.30T | ¥1.20T | ¥1.36T | Total debtDebt |
| ¥960.6B | ¥805.2B | ¥859.2B | ¥1.17T | ¥1.15T | ¥1.20T | ¥1.35T | ¥1.16T | ¥1.03T | ¥1.21T | Net debt / (cash)Net debt |
| 14.6× | 20.9× | 20.7× | -0.3× | 11.7× | 38.8× | 18.5× | 17.1× | 9.7× | 11.7× | Interest coverageInt. cov. |
| ¥619.9B | ¥905.9B | ¥878.9B | ¥1.04T | ¥1.03T | ¥1.44T | ¥1.63T | ¥1.81T | ¥1.49T | ¥1.63T | Shareholders’ equityEquity |
| Per share | ||||||||||
| 800M | 1.04B | 1.04B | 1.49B | 1.49B | 1.49B | 1.49B | 1.39B | 1.36B | 1.29B | Shares out (diluted)Shares |
| ¥3987.93 | ¥3587.20 | ¥4254.95 | ¥4059.47 | ¥3059.53 | ¥4489.81 | ¥6349.40 | ¥6260.91 | ¥6767.08 | ¥6289.75 | Revenue / shareRev/sh |
| ¥110.20 | ¥156.06 | ¥78.32 | ¥-15.40 | ¥23.45 | ¥187.67 | ¥170.31 | ¥164.09 | ¥76.62 | ¥133.40 | EPS (diluted)EPS |
| ¥15.11 | ¥75.65 | ¥71.89 | ¥-101.63 | ¥33.17 | ¥34.49 | ¥-79.51 | ¥220.11 | ¥287.31 | ¥230.04 | Owner earnings / shareOE/sh |
| ¥15.11 | ¥75.65 | ¥71.89 | ¥-101.63 | ¥33.17 | ¥34.49 | ¥-79.51 | ¥220.11 | ¥287.31 | ¥184.34 | Free cash flow / shareFCF/sh |
| ¥10.00 | ¥11.84 | ¥17.75 | ¥22.85 | ¥28.00 | ¥24.00 | ¥33.99 | ¥28.88 | ¥33.97 | ¥34.30 | Dividends / shareDiv/sh |
| ¥51.82 | ¥55.85 | ¥73.32 | ¥79.66 | ¥81.29 | ¥63.61 | ¥57.46 | ¥50.88 | ¥63.73 | ¥120.17 | Cap. spending / shareCapex/sh |
| ¥774.91 | ¥871.09 | ¥845.13 | ¥695.63 | ¥690.62 | ¥964.54 | ¥1093.99 | ¥1301.51 | ¥1100.51 | ¥1261.85 | Book value / shareBVPS |
The diluted share count moved ×1.43 into 2020 — shares issued, not a split the totals corroborate — and the per-share figures carry the counts as filed.
Share counts before 2024 are restated ×5 for a stock split, so per-share figures sit on one basis.
| 9-yr | 5-yr | |
|---|---|---|
| Revenue / share | +5.2%/yr | +15.5%/yr |
| Owner earnings / share | +35.3%/yr | +47.3%/yr |
| EPS | +2.1%/yr | +41.6%/yr |
| Dividends / share | +14.7%/yr | +4.1%/yr |
| Capital spending / share | +9.8%/yr | +8.1%/yr |
| Book value / share | +5.6%/yr | +12.8%/yr |
Net income is the accountant's number; owner earnings is the cash an owner could take out. The walk between them, off the cash-flow statement, and whether the gap is widening or holding.
In fiscal 2026 the business earned ¥296.5B of owner earnings, the operating cash left after the ¥96.0B it takes just to hold its position. It put ¥58.9B more into growth; free cash flow, after that spending, was ¥237.6B.
| FY2026 | FY2025 | FY2024 | FY2023 | FY2022 | |
|---|---|---|---|---|---|
| Reported net income | ¥171.9B | ¥104.1B | ¥228.5B | ¥253.6B | ¥279.5B |
| Depreciation & amortizationnon-cash charge added back | +¥96.0B | +¥95.7B | +¥99.2B | +¥104.4B | +¥104.8B |
| Working capital & othertiming of cash in and out, other non-cash items | +¥124.5B | +¥277.0B | +¥49.7B | −¥390.9B | −¥238.2B |
| Cash from operations | ¥392.4B | ¥476.7B | ¥377.4B | (¥32.8B) | ¥146.1B |
| Maintenance capital expenditurethe spending needed just to hold position and volume | −¥96.0B | −¥86.6B | −¥70.9B | −¥85.6B | −¥94.7B |
| Owner earnings | ¥296.5B | ¥390.2B | ¥306.5B | (¥118.4B) | ¥51.4B |
| Growth capital expenditurediscretionary; spent to get bigger, not to stand still | −¥58.9B | — | — | — | — |
| Free cash flow | ¥237.6B | ¥390.2B | ¥306.5B | (¥118.4B) | ¥51.4B |
| Owner-earnings marginowner earnings ÷ revenue | 4% | 4% | 4% | -1% | 1% |
Owner earnings is the cash an owner could pull out without starving the business: operating cash less the maintenance capital it must spend to hold its position (here about ¥96.0B, roughly its depreciation, the rate its assets wear out). The other ¥58.9B of its capital spending is growth it chose, not upkeep it owed; charged only with the maintenance it must do, the business earns well more than the year's free cash flow shows.
Maintenance capex is estimated as depreciation where a growing business invests above it; free cash flow is the figure the scorecard's free-cash margin reads.
Quality & stewardship
Returns, the balance sheet, and stewardship. The same checks the US pages run, in yen.
Owner’s Scorecard
Will it survive?
- Can it pay its interest? 11.7×ComfortableOperating income ¥212.2B ÷ interest expense ¥18.1B
What this means
Operating profit covers interest with the kind of margin Graham wanted for a defensive holding. Necessary, not sufficient, it says solvent, not cheap.
- How heavy is the debt, net of cash? ¥1.21T · 5.7× operating profitHeavy net debtCash ¥157.1B − debt ¥1.36T
What this means
Netting ¥157.1B of cash and short-term investments against ¥1.36T of debt leaves ¥1.21T owed, about 5.7× a year's operating profit (6.4× on the gross debt, before the cash). Net debt is the leverage figure that matters: the cash is already set against the debt. Strategic or illiquid investments aren't counted here.
- Long (60+ days)DSO 38 + DIO 68 − DPO 42 days
What this means
Days cash is tied up between paying suppliers and collecting from customers. Lower is better; a long cycle means growth itself eats cash.
Is it a good business?
- Below average through the cycle10-yr median, range -0%–13%; 6% latest = NOPAT ¥167.6B ÷ invested capital ¥2.83TIndustry peers: median 6%
What this means
The rate the business earns on the money tied up in it, Buffett's north star, because over time a stock tracks the ROIC beneath it. Above ~15% sustained hints at a moat; a return below the cost of capital (~8%) erodes value as a business grows rather than building it — the test Buffett weighs most. The headline is the median of the last 10 years (it ran 6% most recently), so one peak or trough year doesn't set the verdict. Asset-light businesses (R&D expensed, little capital) read artificially high, pair this with Owner Earnings.
- Thin, recently turned positivelatest ¥296.5B = operating cash ¥392.4B − maintenance capex ¥96.0B; positive each of the last 3 years, after an earlier loss stretch (10-yr median 1%)Industry peers: median 6%
What this means
What an owner could take out without starving the business: operating cash less the maintenance capital it must spend to hold its position — Buffett's owner earnings. That's 4% of revenue this year, a 1% median across 10 years.
- Cash-backedCash from ops ¥392.4B ÷ net income ¥171.9B
What this means
How much of reported profit showed up as operating cash. Above 1× is reassuring; well below suggests earnings lean on accruals. One year is noisy, growth and working-capital swings distort it, and this is operating cash, not free cash. Watch the multi-year trend.
How is the cash used?
- Reinvests most of itDividends + buybacks ¥46.5B ÷ Owner Earnings ¥296.5B
What this means
Of ¥296.5B Owner Earnings, ¥46.5B (16%) went back to shareholders, ¥44.2B dividends, ¥2.3B buybacks. Returning most of it is the mark of a mature business with little left to reinvest at a high return; reinvesting most could mean a long runway, or empire-building. The split doesn't say which; the return earned on it (see ROIC) does.
- Investing or harvesting? 1.61×ExpandingCapex ¥154.9B ÷ depreciation ¥96.0B
What this means
Descriptive, not a grade. Above ~1× means investing faster than assets wear out (growth, or, sustained for years, today's earnings carrying less depreciation than tomorrow's will). Below means spending less than it's wearing out (efficiency, or a melting asset base). The ratio won't tell you which; the filings will.
Durability & moat, 2017–2026
Whether the record’s returns held, and what the capital reinvested earned.
- Profitable years 9 of 10
What this means
Lost money in 1 year(s), look at what happened there before trusting the average.
- Return on capital ≥ 15% 0 of 10 yrs
What this means
A moat shows up as a high return on invested capital that holds year after year, not one good vintage.
- Operating margin 5% → 3% (3-yr avg ends)
What this means
Through the cycle the operating margin slipped — about 5% early to 3% lately, median 3% — competition or costs are biting in.
- Reinvestment, incremental ROIC 5%
What this means
Reinvested capital came back at only a modest incremental return — near the cost of capital, where extra growth adds little per dollar. The record shows whether it is a soft stretch or a thinning moat.
- Owner earnings growth +25%/yr
What this means
Owner earnings grew about 25% a year over the record.
- Worst year 2020 · −0.1% op. margin
What this means
Operations went underwater in 2020, understand why before trusting the good years.
- Dividend record rising
What this means
Paid and raised the dividend across the record, the continuity Graham prized.
All figures as filed; the source filing is linked above.
How the cash was used, 2017–2026
Over the record, the business generated ¥1.84T of operating cash; how management split it reads as a balanced allocator, splitting cash between the business, owners, and the balance sheet.
- Reinvested¥908.1B · 49%
- Dividends¥331.4B · 18%
- Buybacks¥307.2B · 17%
- Retained (debt / cash)¥292.2B · 16%
- Returned to owners¥638.6B
65% of the owner earnings the business produced over the span, ¥331.4B as dividends and ¥307.2B as buybacks.
- Source of fundingOperating cash
Operating cash covered reinvestment and returns; over the span debt rose ¥311.6B and cash and short-term investments rose ¥67.0B.
- Average price paid for buybacks—
Buybacks ran ¥307.2B over the span, but the filings don't tag the share count needed to deduce the average price paid.
- Net change in share count61.1%
The diluted count rose from 800M to 1289M: issuance (stock pay, deals) outran any buybacks, so owners were diluted on net.
- Dividend record¥34.30/sh
Paid in 10 of the years on record, the per-share dividend growing about 15% a year. It was cut at least once along the way.
- Return on what it retained37%
Of the earnings it kept rather than paid out (¥742.9B over the span), annual owner earnings (first three years vs last three) grew ¥275.9B, so each retained ¥1 added about 0.37 of yearly owner earnings. Buffett's test, run on owner earnings instead of market value.
Buybacks are gross of stock issued to staff; the share-count line above is the net of that, the figure that decides whether owners gained. The average price paid blends a year of purchases (and any accelerated repurchase), so it is close, not exact. The record of where the cash went and on what terms.
Inverting the record
Invert: instead of why Idemitsu Kosan is a good business, the question is what would make owning it a mistake, and whether those marks are in the record. Disconfirming tests across 2017–2026.
1 of the 5 tests turned up something to look into; the other 4 came back clean.
- Look hereDid the share count rise anyway?61.1%
Diluted shares grew 61.1% over 2017–2026, even as the company spent ¥307.2B on buybacks. The repurchases were outrun by issuance — to staff, in a raise, or in a deal — and the filing says which; owners' slice still shrank. Read the buyback line beside this one, not on its own.
- Is it less profitable than it was?
- Did debt outgrow the business?
- Did reported profit become cash?
- Did receivables and inventory outpace sales?
Each test is read from the filings and is noisy alone; a flag can mark a cyclical trough or a year of heavy investment as easily as a problem. The filing says which.
The price
What a price would have to assume, set against the record above.
What the price implies
reverse-DCFType today's close and see the owner-earnings growth you'd have to believe to justify it, beside what Idemitsu Kosan has delivered.
Idemitsu Kosan’s latest year runs above its own through-cycle margin — the reported figure may flatter a peak. So the tool opens on the through-cycle base, Graham’s averaging cutting both ways; clear the toggle below to read the latest year exactly as reported.
Through the cycle, Idemitsu Kosan earns about ¥112.4B on its 1.4% median owner-earnings margin. This year’s 3.7% margin runs above that; the reported figure may flatter a peak you'd be paying on. Normalize, below, values the price on that through-cycle figure rather than the latest year. It comes pre-checked here for that reason, the same rule that already normalizes a trough; clear it to price the year as filed.
—
9.0% = the 4.55% 10-year Treasury (Jul 15, 2026) + 4.45 points of equity premium. The rate you require is yours to set.
Enter a price above to run it.
A dated snapshot of the price you typed, the assumptions you set, and what the page showed for them. A snapshot is never edited after it is saved. Your notebook is yours alone — the commitment states what is stored and what we will never do.
Graham capped the multiple at 15×; Buffett and Munger let that rule go: a wonderful business can deserve 50× if the thesis holds. The gate marks the bargain-hunter's floor.
Prefilled with the 10-year Treasury (4.55%, as of Jul 15, 2026). Edit it for today’s exact figure, or a AAA corporate yield.
Graham measured a stock against the bond you could own instead, the heart of his margin of safety. Enter a price above to weigh the owner-earnings yield against this bond.
Free cash flow ¥237.6B on 1289M diluted shares; net debt ¥1.21T. The base opens on the through-cycle figure (the latest year sits above the record’s own median, and Graham’s averaging cuts both ways); clear Normalize to use the year as filed. Net of stock comp treats option pay as the expense it is. Capex (¥154.9B) runs well above depreciation (¥96.0B), so this is a build-out; Steady-state swaps total capex for maintenance (≈ depreciation), lifting the base to about ¥296.5B, the cash it would throw off if it stopped expanding. The dials set the multiple a growth belief justifies; the price, and every dollar on this page, is yours.
Figures from EDINET, the Financial Services Agency’s disclosure system, the same kind of filing the US pages draw from EDGAR. A separate pool: these names never pass through the US industry classifier.
Manual order: ← 4911 its page in the Manual 5020 →
Industry order: the Refining & Marketing chapter 5020 →