As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 5.58% |
|---|---|
| Individuals | 57.89% |
| Top 10 holders | 51.90% |
| Total shareholders | 861 |
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 |
|---|---|---|
| Individuals & others | 57.89% | 772 |
| Other corporations | 23.24% | 47 |
| Financial institutions | 11.85% | 7 |
| Foreign institutions | 5.58% | 17 |
| Securities firms | 1.38% | 14 |
| Foreign individuals | 0.05% | 4 |
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 | 坪井 典明 | 604,000 | 13.21% |
| 2 | 有限会社坪井 | 556,000 | 12.16% |
| 3 | 光通信KK投資事業有限責任組合無限責任組合員光通信株式会社 | 297,000 | 6.50% |
| 4 | 日本生命保険相互会社 | 234,000 | 5.11% |
| 5 | 株式会社三井住友銀行 | 169,000 | 3.69% |
| 6 | 大伸化学従業員持株会 | 136,000 | 2.98% |
| 7 | 丸善石油化学株式会社 | 130,000 | 2.84% |
| 8 | INTERACTIVEBROKERS LLC(常任代理人 インタラクティブ・ブローカーズ証券株式会社) | 92,000 | 2.01% |
| 9 | DEUTSCHE BANK AG,SINGAPORE A/C CLIENTS (TREATY) | 82,000 | 1.80% |
| 10 | 株式会社三菱UFJ銀行 | 73,000 | 1.60% |
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.