Large shareholding report Japan: what the 5% rule files, and what we hold
Japan's Financial Instruments and Exchange Act requires anyone crossing 5% of a listed company's voting rights to file a large shareholding report (大量保有報告書) with the local finance bureau within five business days, and to file a change report on each 1% move. The filings are public on EDINET the day they land.
What this box holds, and where each number comes from
| Source file | Filings | Issuers | Covers |
|---|---|---|---|
| data/jp/jp_large_shareholding.parquet | 5,792 | 1,133 | 2020-01-27 to 2026-09-04 |
Counts are rows in the named file as at the build on 2026-09-07, not an estimate of the register. A register we reach in windows is a floor, so where a source caps a query the figure understates and never overstates.
This page also answers: large shareholding reporting system japan; activist investors japan success.
Every filing named here is a public disclosure made by the holder to a regulator. Nothing on this page is a recommendation, and a filing is a record of what somebody already did.