As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 1.55% |
|---|---|
| Individuals | 40.99% |
| Top 10 holders | 70.34% |
| Total shareholders | 1,149 |
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 | 53.65% | 20 |
| Individuals & others | 40.99% | 1,086 |
| Securities firms | 3.14% | 18 |
| Foreign institutions | 1.55% | 10 |
| Financial institutions | 0.44% | 1 |
| Foreign individuals | 0.23% | 14 |
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 | 株式会社誠インベスト | 670,800 | 33.34% |
| 2 | 株式会社誠リサーチ | 160,000 | 7.95% |
| 3 | 株式会社ホームリサーチ | 131,800 | 6.55% |
| 4 | 小 島 俊 雄 | 120,000 | 5.97% |
| 5 | 小 島 一 誠 | 104,000 | 5.17% |
| 6 | 株式会社不死鳥インベスト | 70,000 | 3.48% |
| 7 | 小 島 朝 子 | 48,000 | 2.39% |
| 8 | 水 田 真 貴 子 | 40,000 | 1.99% |
| 9 | 竹 俊 美 | 40,000 | 1.99% |
| 10 | 誠建設工業社員持株会 | 30,400 | 1.51% |
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.