Dropping the So-net prefix to become M3 (2009)
Changing the sign, and the loosening of control
A change of name alters nothing inside a company. What M3 let go of in January 2010 was a four-character prefix; the parent holding 56.5% of the voting rights stayed, and so did the arrangement by which paid content was billed through the parent’s systems. That the disclosure documents nevertheless spoke of establishing an independent brand suggests the external name had become the explanation of the business itself. A company standing between doctors and drug makers, setting out to buy physician communities abroad, is hard to explain under the banner of a telecoms service.
The sequence is instructive too. In most parent-subsidiary listings the capital is tidied up first and the name follows as a consequence. At M3 the name left first, and the parent relinquished control three years later. Given that the governance machinery — a board with a majority of directors from outside the parent — had been put in place early, the renaming looks less like a declaration of independence than like bringing the label into line with a reality that already existed. The question of when to change the sign overlaps with the question of how a company wants to explain itself.
Revenue and net margin, FY2004–FY2014
Revenue in ¥ bn (bars) and net margin in % (line), for the years around the decision. Shaded columns are FY2009 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 M3
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
M3’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/2413/manifest.json | Resource index |
| GET | /api/2413/history.json | History overview |
| GET | /api/2413/timeline.json | Chronology |
| GET | /api/decisions.json | All management decisions (index) |
| GET | /api/2413/decisions.json | Management decisions (index) |
| GET | /api/2413/decisions/{slug}.json | One decision (full dossier) |
| GET | /api/2413/executives.json | Executives |
| GET | /api/2413/shareholders.json | Major shareholders |
| GET | /api/2413/financials.json | Financial statements |
| GET | /api/2413/financials-longterm.json | Long-term results |
| GET | /api/2413/segments.json | Business segments |
| GET | /api/2413/regions.json | Sales by region |
| GET | /api/2413/workforce.json | Workforce |