SPK CORPORATION
TSE Prime
Shareholding pattern
As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 7.99% |
|---|---|
| Individuals | 58.33% |
| Top 10 holders | 45.87% |
| Total shareholders | 12,931 |
Who owns the company
Share of voting unitsIndividuals & others 58.33%Financial institutions 16.17%Other corporations 16.14%Foreign institutions 7.99%Securities firms 1.31%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 | 58.33% | 12,643 |
| Financial institutions | 16.17% | 11 |
| Other corporations | 16.14% | 142 |
| Foreign institutions | 7.99% | 80 |
| Securities firms | 1.31% | 30 |
| Foreign individuals | 0.06% | 25 |
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） | 958,000 | 9.49% |
| 2 | UH Partners 2 投資事業有限責任組合 | 750,000 | 7.43% |
| 3 | 光通信KK投資事業有限責任組合 | 652,000 | 6.46% |
| 4 | SPK社員持株会 | 497,000 | 4.93% |
| 5 | 株式会社UH Partners 3 | 488,000 | 4.84% |
| 6 | 株式会社日本カストディ銀行（信託口） | 414,000 | 4.11% |
| 7 | 渡部 和子 | 303,000 | 3.00% |
| 8 | 日本生命保険相互会社 | 233,000 | 2.31% |
| 9 | BNYM RE BNYMLB RE GPP CLIENT MONEY AND ASSETS AC(常任代理人 株式会社三菱UFJ銀行) | 190,000 | 1.89% |
| 10 | ミヤコ自動車工業株式会社 | 142,000 | 1.41% |
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.