Sekisui Kasei Co.,Ltd.
TSE Prime
Shareholding pattern
As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 9.50% |
|---|---|
| Individuals | 40.50% |
| Top 10 holders | 52.06% |
| Total shareholders | 9,613 |
Who owns the company
Share of voting unitsIndividuals & others 40.5%Other corporations 30.11%Financial institutions 17.26%Foreign institutions 9.5%Securities firms 2.57%Foreign individuals 0.06%
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 | 40.50% | 9,339 |
| Other corporations | 30.11% | 113 |
| Financial institutions | 17.26% | 15 |
| Foreign institutions | 9.50% | 88 |
| Securities firms | 2.57% | 27 |
| Foreign individuals | 0.06% | 31 |
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 | 積水化学工業株式会社 | 9,855,000 | 21.61% |
| 2 | 日本マスタートラスト信託銀行株式会社（信託口）（注２） | 3,741,000 | 8.21% |
| 3 | 積水化成品従業員持株会 | 2,005,000 | 4.40% |
| 4 | 積水樹脂株式会社 | 1,419,000 | 3.11% |
| 5 | 株式会社エフピコ | 1,348,000 | 2.96% |
| 6 | 株式会社三菱ＵＦＪ銀行 | 1,327,000 | 2.91% |
| 7 | 積水化成品取引先持株会 | 1,189,000 | 2.61% |
| 8 | 第一生命保険株式会社（常任代理人 株式会社日本カストディ銀行） | 985,000 | 2.16% |
| 9 | 株式会社日本カストディ銀行（信託口）（注２） | 974,000 | 2.14% |
| 10 | INTERACTIVE BROKERS LLC（常任代理人 インタラクティブ・ブローカーズ証券株式会社） | 888,000 | 1.95% |
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.