Sumitomo Electric Industries

Buying a German harness maker and all of Sumitomo Wiring Systems (2006)

Key decision·2006· Sumitomo Electric Industries — the full company history →

Deciding whom you are a company that sells to

To read these two years only as overseas M&A that bought additional share is to miss the point. What the acquisition of Volkswagen Bordnetze brought was less production equipment than a customer — the European carmakers that following Japanese manufacturers abroad had never reached. After president Matsumoto Masayoshi said at the end of 2004 that “20% share is already in sight,” what remained was not a share figure but a choice about whom the company would be selling to.

The customers it bought did not turn into profit at once. In the year to March 2009 the automotive segment’s operating profit fell to ¥6.1 billion, as falling demand coincided with the cost of reorganising and relocating harness plants in Europe and North America. Because Sumitomo Wiring Systems had been made a wholly owned subsidiary the year before, that pain was absorbed inside the group alone, without minority shareholders in Yokkaichi. Whether buying in works out shows up not in the year of the purchase but in how well the following few years are endured.

Revenue and net margin, FY2001–FY2011

Revenue in ¥ bn (bars) and net margin in % (line), for the years around the decision. Shaded columns are FY2006 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 Sumitomo Electric Industries


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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Data API

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Method Endpoint Returns
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GET /api/5802/manifest.json Resource index
GET /api/5802/history.json History overview
GET /api/5802/timeline.json Chronology
GET /api/decisions.json All management decisions (index)
GET /api/5802/decisions.json Management decisions (index)
GET /api/5802/decisions/{slug}.json One decision (full dossier)
GET /api/5802/executives.json Executives
GET /api/5802/shareholders.json Major shareholders
GET /api/5802/financials.json Financial statements
GET /api/5802/financials-longterm.json Long-term results
GET /api/5802/segments.json Business segments
GET /api/5802/regions.json Sales by region
GET /api/5802/workforce.json Workforce