Roughly 3,900 companies are listed in Japan. The great majority of them file only in Japanese. If you do not read Japanese, their revenue, operating income and balance sheet are effectively invisible to you — not because the information is secret, but because nobody translates it.
This site publishes those figures in English. Nothing more, and deliberately nothing more.
It contains no investment advice, no recommendations, no price targets and no opinion on whether any security is worth owning. If you are looking for a view, this is the wrong place. What is here is what the companies themselves filed.
Japanese statutory filings are published as XBRL — structured, machine-readable data — alongside the human-readable documents. Every number on this site is read directly from that XBRL and rendered without manual transcription:
Amounts in XBRL are absolute yen values, so the unit confusion that comes from reading Japanese financial tables — where figures are often printed in millions or thousands — does not arise here.
Where a company did not disclose an item, the page says so rather than substituting an estimate. Banks and insurers, for instance, do not report “revenue” in the ordinary sense, and that gap is shown as a gap.
If a figure here does not match the original filing, that is a defect and we want to know. Each company page links to the source document so the two can be compared directly.
This site is written by Motoyoshi Murakami — a pen name. The name belongs to a sixteenth-century commander of the Murakami fleet, who knew the straits of the Seto Inland Sea well enough to charge for passage through them. It seemed a reasonable thing to borrow.
The author spent many years at financial institutions in Japan, then moved to Singapore to work closer to the markets themselves, and spent a further eight years at a Japanese financial institution there. They now run their own equity portfolio and read Japanese filings daily as part of that work. Both of those things matter here: the first is why the accounting conventions in these filings are second nature, and the second is why the site covers what it covers.
The pen name is not an attempt to avoid accountability. Writing publicly about markets under a legal name would create difficulties given that background, and the alternative — not publishing at all — seemed worse. What replaces a name is this: every figure on the site is traceable to the filing it came from, and every company page links to it. You do not have to trust the author to check the work. That is the whole design.
The author invests in Japanese equities personally and may hold positions in companies covered here. Because this site publishes only figures the companies themselves filed, and expresses no view on any security, this does not shape the content — but it is stated for completeness rather than left to be discovered.
EDINET content is used under Japan's Public Data License 1.0, which permits reuse with attribution. Quarterly data is provided through EDINET DB. Attribution for both appears in the footer of every page.