RIKEN KEIKI CO.,LTD.
TSE Prime
Shareholding pattern
As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 33.06% |
|---|---|
| Individuals | 20.32% |
| Top 10 holders | 52.00% |
| Total shareholders | 2,572 |
Who owns the company
Share of voting unitsForeign institutions 33.06%Financial institutions 32.11%Individuals & others 20.32%Other corporations 14.04%Securities firms 0.47%Foreign individuals 0.01%
How to read this: each slice is a group of investors. Foreign and financial institutions are professional money; individuals are retail shareholders; other corporations are usually business partners holding strategic stakes. A large institutional slice generally means heavier analyst coverage and more trading volume.
Ownership Trend
Holding %, recent yearsForeign institutionsFinancial institutionsIndividualsOther corporationsSecurities firms
How to read this: each line shows how one investor group's share has moved over recent years. A rising foreign or institutional line can signal growing professional interest; a falling one the opposite. Japanese companies disclose ownership once a year, so these are annual points — read the direction over several years rather than a single step.
Ownership detail
| Investor category | Holding % | Shareholders |
|---|---|---|
| Foreign institutions | 33.06% | 179 |
| Financial institutions | 32.11% | 18 |
| Individuals & others | 20.32% | 2,267 |
| Other corporations | 14.04% | 86 |
| Securities firms | 0.47% | 19 |
| Foreign individuals | 0.01% | 3 |
How to read this: a high foreign or institutional share often means the stock is widely researched and more liquid; a high individual share means retail investors hold most of the company. Percentages are of voting units.
Largest shareholders
| S.No. | Shareholder | Shares | Stake % |
|---|---|---|---|
| 1 | 日本マスタートラスト信託銀行株式会社（信託口） | 4,236,000 | 9.32% |
| 2 | STATE STREET BANK AND TRUST COMPANY 505001（常任代理人 株式会社みずほ銀行 決済営業部） | 4,192,000 | 9.22% |
| 3 | 株式会社日本カストディ銀行（信託口） | 2,556,000 | 5.62% |
| 4 | BANK LOMBARD ODIER AND CO LTD GENEVA（常任代理人 株式会社三菱UFJ銀行） | 2,413,000 | 5.31% |
| 5 | 第一生命保険株式会社 | 2,400,000 | 5.28% |
| 6 | 理研計器協力会社持株会 | 1,983,000 | 4.36% |
| 7 | 株式会社みずほ銀行 | 1,800,000 | 3.96% |
| 8 | 長野計器株式会社 | 1,422,000 | 3.13% |
| 9 | 株式会社三井住友銀行 | 1,327,000 | 2.92% |
| 10 | BNYM AS AGT/CLTS 10 PERCENT（常任代理人 株式会社三菱UFJ銀行） | 1,306,000 | 2.88% |
Trust banks such as Master Trust and Custody Bank appear at the top of most Japanese registers: they hold shares on behalf of many underlying funds rather than owning them outright.