ALPHA SYSTEMS INC.
TSE Prime
Shareholding pattern
As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 15.27% |
|---|---|
| Individuals | 57.23% |
| Top 10 holders | 80.12% |
| Total shareholders | 3,103 |
Who owns the company
Share of voting unitsIndividuals & others 57.23%Financial institutions 15.34%Foreign institutions 15.27%Other corporations 11.5%Securities firms 0.67%
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 | 57.23% | 2,976 |
| Financial institutions | 15.34% | 12 |
| Foreign institutions | 15.27% | 60 |
| Other corporations | 11.50% | 29 |
| Securities firms | 0.67% | 23 |
| Foreign individuals | 0.00% | 3 |
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 | 石川 義昭 | 4,802,000 | 34.20% |
| 2 | NOMURA CUSTODY NOMINEES LIMITED OMNIBUS－FULLY PAID（CASHPB）（常任代理人 野村證券株式会社） | 1,393,000 | 9.92% |
| 3 | アルファシステムズ従業員持株会 | 1,304,000 | 9.29% |
| 4 | 株式会社オルビック | 895,000 | 6.38% |
| 5 | 株式会社日本カストディ銀行（信託口） | 864,000 | 6.16% |
| 6 | 日本マスタートラスト信託銀行株式会社（信託口） | 669,000 | 4.76% |
| 7 | 株式会社シー・アール・シー | 530,000 | 3.77% |
| 8 | 石川 有子 | 396,000 | 2.82% |
| 9 | NORTHERN TRUST CO. （AVFC）RE IEDU UCITS CLIENTS NON LENDING 15 PCT TREATY ACCOUNT（常任代理人 香港上海銀行東京支店） | 240,000 | 1.70% |
| 10 | 株式会社きらぼし銀行 | 158,000 | 1.12% |
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.