Idemitsu Kosan

The first outside capital in thirty-seven years — and a listing cancelled by one word from the chairman (2000)

Key decision·2000· Idemitsu Kosan — the full company history →

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


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