SK JAPAN CO.,LTD.
TSE Standard
Shareholding pattern
As reported in the annual securities report, 2026-02-28.
| Foreign institutions | 8.48% |
|---|---|
| Individuals | 52.65% |
| Top 10 holders | 59.31% |
| Total shareholders | 5,013 |
Who owns the company
Share of voting unitsIndividuals & others 52.65%Other corporations 33.3%Foreign institutions 8.48%Securities firms 4.67%Financial institutions 0.86%Foreign individuals 0.04%
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 | 52.65% | 4,903 |
| Other corporations | 33.30% | 44 |
| Foreign institutions | 8.48% | 36 |
| Securities firms | 4.67% | 13 |
| Financial institutions | 0.86% | 5 |
| Foreign individuals | 0.04% | 12 |
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 | 株式会社ラウンドワン | 2,688,462 | 32.05% |
| 2 | 久保 泰子 | 400,000 | 4.77% |
| 3 | 久保 千晶 | 400,000 | 4.77% |
| 4 | 八百 博徳 | 299,356 | 3.57% |
| 5 | RE FUND 107-CLIENT AC （常任代理人 シティバンク、エヌ・エイ東京支店） | 248,300 | 2.96% |
| 6 | 鈴木 康友 | 231,800 | 2.76% |
| 7 | 小沼 滋紀 | 222,800 | 2.66% |
| 8 | 株式会社 | 202,228 | 2.41% |
| 9 | 佐々木 嶺一 | 149,800 | 1.79% |
| 10 | 松田 忠夫 | 131,926 | 1.57% |
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.