Yamaichi Securities

Parking discretionary-account losses, and moving them off balance sheet through unconsolidated subsidiaries (1991)

Key decision·1991· Yamaichi Securities — the full company history →

A promise made to hold its rank, made larger than the firm

Yamaichi promised returns beyond what it could actually earn, for the reason that it could not afford to fall behind the other three on assets under management. The yield guarantee itself was a habit that had spread across the industry; it was not this firm’s invention. The divergence came at the point when markets broke and the promises could not be kept. When ¥45.6 billion of compensation came to light in 1991, the industry was handed one chance to settle up. Choosing not to empty the drawer then, and instead moving the remainder from outside the fiscal-year end to outside consolidation, is the choice that came back six years later as ¥264.8 billion.

Yet folding this into a story of concealment by a handful of executives misses something. The Ministry of Finance knew of the parking from 1991 and did not move in; the internal investigation report even records testimony that a bureau chief urged an early resolution. Inside the firm, a vice-president who argued for putting every loss on the books was transferred to an affiliate. Where a personnel practice of shipping dissenters out to the branches and the affiliates met a supervisor’s willingness to look away, the result was a state in which only a few people could see the whole thing at all.

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 Yamaichi Securities


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Data API

Yamaichi Securities’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/8602/manifest.json Resource index
GET /api/8602/history.json History overview
GET /api/8602/timeline.json Chronology
GET /api/decisions.json All management decisions (index)
GET /api/8602/decisions.json Management decisions (index)
GET /api/8602/decisions/{slug}.json One decision (full dossier)
GET /api/8602/executives.json Executives
GET /api/8602/shareholders.json Major shareholders
GET /api/8602/financials.json Financial statements
GET /api/8602/financials-longterm.json Long-term results
GET /api/8602/segments.json Business segments
GET /api/8602/regions.json Sales by region
GET /api/8602/workforce.json Workforce