Open Door Inc.
TSE Standard
Shareholding pattern
As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 0.43% |
|---|---|
| Individuals | 75.74% |
| Top 10 holders | 76.35% |
| Total shareholders | 9,798 |
Who owns the company
Share of voting unitsIndividuals & others 75.74%Other corporations 18.3%Financial institutions 3.37%Securities firms 1.31%Foreign individuals 0.85%Foreign institutions 0.43%
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.
Ownership Trend
Holding %, recent yearsForeign institutionsFinancial institutionsIndividualsOther corporationsSecurities firms
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.
Ownership detail
| Investor category | Holding % | Shareholders |
|---|---|---|
| Individuals & others | 75.74% | 9,564 |
| Other corporations | 18.30% | 49 |
| Financial institutions | 3.37% | 8 |
| Securities firms | 1.31% | 22 |
| Foreign individuals | 0.85% | 112 |
| Foreign institutions | 0.43% | 43 |
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.
Largest shareholders
| S.No. | Shareholder | Shares | Stake % |
|---|---|---|---|
| 1 | 関根 大介 | 15,991,000 | 51.56% |
| 2 | 株式会社くふうカンパニーホールディングス | 2,173,500 | 7.00% |
| 3 | 株式会社ザ・パス・インベストメント | 1,740,000 | 5.61% |
| 4 | 株式会社CHINTAI | 1,598,000 | 5.15% |
| 5 | 日本マスタートラスト信託銀行株式会社（信託口） | 908,700 | 2.93% |
| 6 | 佐藤 茂 | 690,000 | 2.22% |
| 7 | 李 炳燦 | 249,700 | 0.80% |
| 8 | 野村證券株式会社（常任代理人 株式会社三井住友銀行） | 132,229 | 0.42% |
| 9 | DAICHI WAKABAYASHI（常任代理人 みずほ証券株式会社） | 130,000 | 0.41% |
| 10 | 佐々木 肇 | 78,800 | 0.25% |
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.