Open House Group Co.,Ltd.
TSE Prime
Shareholding pattern
As reported in the annual securities report, 2025-09-30.
| Foreign institutions | 35.42% |
|---|---|
| Individuals | 48.89% |
| Top 10 holders | 69.58% |
| Total shareholders | 4,874 |
Who owns the company
Share of voting unitsIndividuals & others 48.89%Foreign institutions 35.42%Financial institutions 13.44%Securities firms 2.14%Other corporations 0.1%Foreign individuals 0.01%
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 | 48.89% | 4,393 |
| Foreign institutions | 35.42% | 351 |
| Financial institutions | 13.44% | 23 |
| Securities firms | 2.14% | 25 |
| Other corporations | 0.10% | 66 |
| Foreign individuals | 0.01% | 16 |
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 | 荒井 正昭 | 38,237,200 | 33.97% |
| 2 | いちごトラスト・ピーティーイー・リミテッド(常任代理人香港上海銀行東京支店) | 15,242,100 | 13.54% |
| 3 | 日本マスタートラスト信託銀行株式会社(信託口) | 9,867,800 | 8.76% |
| 4 | 株式会社日本カストディ銀行(信託口) | 3,303,000 | 2.93% |
| 5 | JP MORGAN CHASE BANK 385864(常任代理人株式会社みずほ銀行） | 2,960,492 | 2.63% |
| 6 | JP MORGAN CHASE BANK 385632(常任代理人株式会社みずほ銀行） | 2,204,660 | 1.95% |
| 7 | 特定有価証券信託受託者株式会社ＳＭＢＣ信託銀行 | 2,200,000 | 1.95% |
| 8 | 今村 仁司 | 1,708,700 | 1.51% |
| 9 | STATE STREET BANK AND TRUST COMPANY 505001(常任代理人株式会社みずほ銀行） | 1,368,981 | 1.21% |
| 10 | モルガン・スタンレーMUFG証券株式会社 | 1,276,138 | 1.13% |
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.