The first outside capital in thirty-seven years — and a listing cancelled by one word from the chairman (2000)
What lay between principle and capital
Idemitsu Akira used to explain the founding-era idea that “capital is ideally zero” by saying that capital is really people: if the staff are developed, the money that is needed will follow. The principle bought a real freedom — the ability to commit to long-horizon capital spending without owing an explanation to shareholders. Its inseparable other face was the absence of any route to raise equity from the market in a crisis. In 1998 it was the second face that mattered. Once the banks lost the capacity to expand lending, funding that rested on borrowing alone hit a wall. The preferred-share compromise was a way of splitting the difference between two demands: admitting the weakness while giving up none of the control.
Revenue and net margin, FY1995–FY2005
Revenue in ¥ bn (bars) and net margin in % (line), for the years around the decision. Shaded columns are FY2000 onwards — after it was taken.
Source: securities reports
Read the full dossier in Japanese →
The Japanese edition carries the complete record of this decision — the situation that forced it, the options weighed, what actually followed, and the sources behind every claim.
Other key decisions at Idemitsu Kosan
- 1911 Founding Idemitsu Shokai in Moji: from peddling machine oil to the sea and the continent (1911)
- 1953 Standing against the international oil cartel: the independent line (1953)
- 2005 A company that idealized the owner-run shop lists on the Tokyo Stock Exchange (2006)
- 2017 A 30% public offering against the founding family’s opposition to the Showa Shell merger (2017)
Yen amounts are converted at the average rate of each figure’s own year — not today’s rate; the revenue chart is shown in yen. Exchange rates & sources — the full ¥/US$ table →
Disclaimer
- This page is provided for general information only and is not investment advice, nor a recommendation to buy or sell any security.
- Figures are compiled independently and include our own estimates, approximations and machine-processed data; we make no warranty as to their accuracy or completeness.
- Sources are primarily each company’s securities reports and other public filings, but errors and omissions may remain.
- Any use of this information is at the reader’s own risk. Past performance does not indicate future results.
- Company names, logos and other marks belong to their respective owners.
Data API
Idemitsu Kosan’s history, financials, executives and
shareholders are published as static JSON — no key, plain GET.
Full specification →
| Method | Endpoint | Returns |
|---|---|---|
| GET | /api/companies.json | All companies |
| GET | /api/5019/manifest.json | Resource index |
| GET | /api/5019/history.json | History overview |
| GET | /api/5019/timeline.json | Chronology |
| GET | /api/decisions.json | All management decisions (index) |
| GET | /api/5019/decisions.json | Management decisions (index) |
| GET | /api/5019/decisions/{slug}.json | One decision (full dossier) |
| GET | /api/5019/executives.json | Executives |
| GET | /api/5019/shareholders.json | Major shareholders |
| GET | /api/5019/financials.json | Financial statements |
| GET | /api/5019/financials-longterm.json | Long-term results |
| GET | /api/5019/segments.json | Business segments |
| GET | /api/5019/regions.json | Sales by region |
| GET | /api/5019/workforce.json | Workforce |