Mercari

Redefining smartphone CtoC with a fixed price: founding Mercari (2013)

Key decision·2013· Mercari — the full company history →

A founding designed for speed and the number-one spot, not size

The heart of this founding decision was not a response to constraints of capital or technology, but the recasting of the very form of consumer-to-consumer trade on a smartphone-first basis. Japanese CtoC since Yahoo Auctions had assumed the auction; President Yamada discarded the bid-up format and chose a flea market where the seller sets a fixed “buy-it-now” price. A settled price speeds the buyer’s decision, raises the turnover of listing and buying, and moves person-to-person trade from a special act toward an everyday one. Prioritizing a “snappy,” practical smartphone experience over polish — even rebuilding from HTML5 to insist on native — shows a founder placing market fit above all. Rather than fighting existing players for share, Mercari set out to launch a whole new category; there the character of this decision shows.

That said, this founding design was also the prototype of the later growth model. The stance of prioritizing the number-one position led on to aggressive fundraising that accepted dilution and to large-scale advertising including television. In network-effect CtoC, the side that takes scale first gains the edge; but a high fixed-cost structure that pours most of revenue into advertising narrows the room for adjustment once growth slows. That the US business — which carried the smartphone-CtoC model established in Japan — booked cumulative write-downs exceeding $91.1M (¥10bn) also points to the problem lurking behind the “take scale first” idea chosen at founding. The 2013 choice to bet on speed and scale and open a new market was a starting point that prepared, at once, both Mercari’s later strength and its later difficulty.

Revenue and net margin, FY2008–FY2018

Revenue in ¥ bn (bars) and net margin in % (line), for the years around the decision. Shaded columns are FY2013 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 Mercari


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

Mercari’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/4385/manifest.json Resource index
GET /api/4385/history.json History overview
GET /api/4385/timeline.json Chronology
GET /api/decisions.json All management decisions (index)
GET /api/4385/decisions.json Management decisions (index)
GET /api/4385/decisions/{slug}.json One decision (full dossier)
GET /api/4385/executives.json Executives
GET /api/4385/shareholders.json Major shareholders
GET /api/4385/financials.json Financial statements
GET /api/4385/financials-longterm.json Long-term results
GET /api/4385/segments.json Business segments
GET /api/4385/regions.json Sales by region
GET /api/4385/workforce.json Workforce