As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 28.01% |
|---|---|
| Individuals | 32.60% |
| Top 10 holders | 43.92% |
| Total shareholders | 7,397 |
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 | 32.60% | 6,812 |
| Foreign institutions | 28.01% | 187 |
| Financial institutions | 22.29% | 22 |
| Other corporations | 16.08% | 344 |
| Securities firms | 1.01% | 29 |
| Foreign individuals | 0.00% | 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.
| S.No. | Shareholder | Shares | Stake % |
|---|---|---|---|
| 1 | 日本マスタートラスト信託銀行株式会社 | 2,615,000 | 12.31% |
| 2 | ユアサ炭協持株会 | 998,000 | 4.69% |
| 3 | 野村信託銀行株式会社 | 931,000 | 4.38% |
| 4 | BNYM AS AGT/CLTS 10PERCENT(常任代理人 株式会社三菱UFJ銀行) | 861,000 | 4.05% |
| 5 | 株式会社日本カストディ銀行 | 797,000 | 3.75% |
| 6 | 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 代表取締役 高橋 正人 | 780,000 | 3.67% |
| 7 | 東部ユアサやまずみ持株会 | 655,000 | 3.08% |
| 8 | 西部ユアサやまずみ持株会 | 627,000 | 2.95% |
| 9 | ユアサ商事社員持株会 | 537,000 | 2.52% |
| 10 | STATE STREET BANK AND TRUST COMPANY 505223(常任代理人 株式会社みずほ銀行決済営業部) | 536,000 | 2.52% |
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.