As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 5.58% |
|---|---|
| Individuals | 18.90% |
| Top 10 holders | 81.45% |
| Total shareholders | 5,040 |
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 | 74.27% | 45 |
| Individuals & others | 18.90% | 4,884 |
| Foreign institutions | 5.58% | 69 |
| Securities firms | 0.83% | 18 |
| Financial institutions | 0.37% | 3 |
| Foreign individuals | 0.05% | 21 |
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 | 株式会社光通信代表取締役 重田 康光 | 17,706,100 | 59.56% |
| 2 | 株式会社HCMAアルファ代表取締役 和田 英明 | 3,870,200 | 13.02% |
| 3 | MSIP CLIENT SECURITIES(常任代理人 モルガン・スタンレーMUFG証券株式会社) | 566,900 | 1.91% |
| 4 | 村田機械株式会社代表取締役 村田 大介 | 496,200 | 1.67% |
| 5 | 根岸 欣司 | 407,700 | 1.37% |
| 6 | INTERACTIVE BROKERS 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) | 360,300 | 1.21% |
| 7 | 平﨑 敏之 | 338,200 | 1.14% |
| 8 | 山本 博之 | 181,900 | 0.61% |
| 9 | NTT・TCリース株式会社 | 156,000 | 0.52% |
| 10 | エフティグループ取引先持株会 | 129,500 | 0.44% |
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.