As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 23.12% |
|---|---|
| Individuals | 12.86% |
| Top 10 holders | 69.87% |
| Total shareholders | 4,664 |
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.
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.
| Investor category | Holding % | Shareholders |
|---|---|---|
| Other corporations | 43.47% | 107 |
| Foreign institutions | 23.12% | 585 |
| Financial institutions | 19.73% | 20 |
| Individuals & others | 12.86% | 3,902 |
| Securities firms | 0.81% | 30 |
| Foreign individuals | 0.01% | 20 |
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.
| S.No. | Shareholder | Shares | Stake % |
|---|---|---|---|
| 1 | 有限会社光パワー | 12,736,000 | 29.06% |
| 2 | 野村信託銀行株式会社(信託口2052286) | 4,500,000 | 10.27% |
| 3 | 株式会社鹿児島東インド会社 | 3,300,000 | 7.53% |
| 4 | 日本マスタートラスト信託銀行株式会社(信託口) | 2,624,000 | 5.99% |
| 5 | 合同会社光パワー本家 | 2,352,000 | 5.37% |
| 6 | 株式会社日本カストディ銀行(信託口) | 1,288,000 | 2.94% |
| 7 | 重田 康光 | 1,198,000 | 2.73% |
| 8 | 玉村 剛史 | 1,064,000 | 2.43% |
| 9 | THE CHASE MANHATTAN BANK N. A. LONDONSECS LENDING OMNIBUS ACCOUNT (常任代理人)株式会社みずほ銀行 | 949,000 | 2.17% |
| 10 | STATE STREET BANK AND TRUST COMPANY 505001(常任代理人)株式会社みずほ銀行 | 602,000 | 1.38% |
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.