Systena

Absorbing Catena and becoming Systena (2010)

Key decision·2010· Systena — the full company history →

The danger of having one customer

One can read this merger as a reversal in which the smaller side swallowed the larger. Following the disclosed sequence, though, the reversal itself does not look like the objective. System Pro’s problem was not its growth rate but the structure in which a quarter of sales was held by a single company. In a business where revenue grows as engineers are added, the pace of hiring is set not by your own judgement but by the customer’s development plan. Raising the shareholding over three years and finally proceeding to a merger can be seen as the sequence required to undo that dependence.

Even so, the air thin-client service put forward as a reason for the merger stopped being described as a pillar of the business afterwards. What actually told was not the new venture explained as a concept, but the financial-sector customers the old Catena held and the sales force that sold to them. The gap between the stated rationale and what proved effective in hindsight reveals the character of this decision. Given that a company which broke its concentration on one customer has, in the 2020s, chosen a new concentration in next-generation mobility, the question of whether to lean toward specialization or toward spreading customers keeps returning to this firm.

Revenue and net margin, FY2005–FY2015

Revenue in ¥ bn (bars) and net margin in % (line), for the years around the decision. Shaded columns are FY2010 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 Systena


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 →


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  • Sources are primarily each company’s securities reports and other public filings, but errors and omissions may remain.
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Data API

Systena’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/2317/manifest.json Resource index
GET /api/2317/history.json History overview
GET /api/2317/timeline.json Chronology
GET /api/decisions.json All management decisions (index)
GET /api/2317/decisions.json Management decisions (index)
GET /api/2317/decisions/{slug}.json One decision (full dossier)
GET /api/2317/executives.json Executives
GET /api/2317/shareholders.json Major shareholders
GET /api/2317/financials.json Financial statements
GET /api/2317/financials-longterm.json Long-term results
GET /api/2317/segments.json Business segments
GET /api/2317/regions.json Sales by region
GET /api/2317/workforce.json Workforce