
The record
Mercari, Inc. listed its shares on the Tokyo Stock Exchange's Mothers market in June 2018, a market Japan Exchange Group's own English-language page, archived the year before Mercari's listing, describes in one sentence: Mothers is a market for growth companies that are looking to eventually list on the 1st Section. The 1st Section was, at the time, the exchange's senior board for established companies; Mothers required no comparable profit or scale history, trading a lower financial bar for a growth-company designation. Mercari's own investor relations pages identify the company's listed stock by a code tied to its Tokyo Stock Exchange quote, and the company remains subject to Japan's EDINET-based periodic disclosure regime once listed, filing the statutory securities report the Financial Instruments and Exchange Act requires.
What the documents establish
JPX's own archived description is the primary evidence that Mothers was defined, structurally, as a feeder market oriented toward an eventual move to the senior board, not as a permanent parallel tier of equal standing. That distinction is easy to lose in casual references to a Tokyo listing, which do not by themselves indicate market segment. JPX's current listing page shows the exchange has since replaced the old segment structure: TSE now operates the Prime, Standard and Growth Markets and the TOKYO PRO Market, with Prime reserved for companies with higher market capitalization, liquidity and governance standards, and Growth aimed at companies disclosing business plans for realizing high growth potential, language that echoes Mothers' original growth-market purpose under a new name.
The operating read
A reader encountering a Mothers-listed reference in an older document about a Japanese company should not read it as equivalent to today's Prime Market, or to the old 1st Section it was designed to feed into; the segment carried a distinctly lower bar aimed at growth-stage disclosure rather than blue-chip scale. Editorially, the safest practice when comparing Japanese listings across years is to check which of the exchange's segments, whether the old Mothers and 1st Section structure or the current Prime, Standard and Growth structure, applied at the specific date being described, since the names and the standards behind them have changed.
What to check before you decide
Before treating a historical Mothers listing as equivalent to a senior-board listing, check the following.
- Which market segment, by its name at the time, did the company list under, and what did JPX's own criteria for that segment require?
- Has the company since moved segments, for example graduating to the former 1st Section or the current Prime Market?
- Is the specific EDINET-filed securities report for the relevant period being checked, rather than a secondary summary of it?
Mercari's 2018 Mothers listing sits inside a market-segment history that JPX has since reorganized under its current structure, retrieved 16 September 2026, and the two structures should not be treated as interchangeable.
Sources & their limits
These are the existing record’s sources and retrieval dates, preserved from the archive. Source statements, historical events and editorial interpretation are distinct.
- Rules Applied after 10 years of Listing
JPX's own English page stating Mothers is a market for growth companies looking to eventually list on the 1st Section.
- New Listing
JPX's current English page stating TSE now operates the Prime, Standard and Growth Markets plus the TOKYO PRO Market, the structure that succeeded Mothers.
- Investor Relations
Mercari's own investor relations site identifies its listed stock by the code linked to its Tokyo Stock Exchange quote.