OSG Corporation
TSE Prime
Shareholding pattern
As reported in the annual securities report, 2025-11-30.
| Foreign institutions | 18.94% |
|---|---|
| Individuals | 43.24% |
| Top 10 holders | 39.31% |
| Total shareholders | 8,716 |
Who owns the company
Share of voting unitsIndividuals & others 43.24%Financial institutions 25.73%Foreign institutions 18.94%Other corporations 10.46%Securities firms 1.64%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 | 43.24% | 8,011 |
| Financial institutions | 25.73% | 48 |
| Foreign institutions | 18.94% | 208 |
| Other corporations | 10.46% | 405 |
| Securities firms | 1.64% | 21 |
| Foreign individuals | 0.01% | 23 |
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 | 日本マスタートラスト信託銀行株式会社（信託口） | 7,098,000 | 8.64% |
| 2 | 株式会社日本カストディ銀行（信託口） | 5,343,000 | 6.50% |
| 3 | オーエスジーエージェント会 | 3,609,000 | 4.39% |
| 4 | MSIP CLIENT SECURITIES（常任代理人 モルガン・スタンレーMUFG証券株式会社） | 3,127,000 | 3.81% |
| 5 | オーエスジー持株会 | 2,620,000 | 3.19% |
| 6 | 公益財団法人大澤科学技術振興財団 | 2,450,000 | 2.98% |
| 7 | オーエスジー社員持株会 | 2,143,000 | 2.61% |
| 8 | 株式会社三井住友銀行 | 2,100,000 | 2.56% |
| 9 | 野村信託銀行株式会社（投信口） | 2,097,000 | 2.55% |
| 10 | STATE STREET BANK AND TRUST COMPANY 505103 （常任代理人 株式会社みずほ銀行決済営業部） | 1,710,000 | 2.08% |
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.