ATOM CORPORATION
TSE Standard
Shareholding pattern
As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 2.21% |
|---|---|
| Individuals | 55.07% |
| Top 10 holders | 43.18% |
| Total shareholders | 195,754 |
Who owns the company
Share of voting unitsIndividuals & others 55.07%Other corporations 41.85%Foreign institutions 2.21%Financial institutions 0.41%Securities firms 0.36%Foreign individuals 0.11%
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 | 55.07% | 194,464 |
| Other corporations | 41.85% | 770 |
| Foreign institutions | 2.21% | 103 |
| Financial institutions | 0.41% | 7 |
| Securities firms | 0.36% | 15 |
| Foreign individuals | 0.11% | 395 |
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 | 株式会社コロワイド | 79,544,000 | 41.19% |
| 2 | ＢＮＹ ＧＣＭ ＣＬＩＥＮＴ ＡＣＣＯＵＮＴ ＪＰＲＤ ＡＣ ＩＳＧ （ＦＥ－ＡＣ）（常任代理人 株式会社三菱ＵＦＪ銀行決済事業部） | 1,873,000 | 0.97% |
| 3 | 株式会社足利銀行 | 500,000 | 0.26% |
| 4 | 野村證券株式会社 | 359,000 | 0.19% |
| 5 | ＳＩＸ ＳＩＳ ＦＯＲ ＳＷＩＳＳ ＮＡＴＩＯＮＡＬ ＢＡＮＫ （常任代理人 株式会社三菱ＵＦＪ銀行決済事業部） | 225,000 | 0.12% |
| 6 | 井上 ヒロ子 | 208,000 | 0.11% |
| 7 | 株式会社大光 | 178,000 | 0.09% |
| 8 | 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） | 164,000 | 0.09% |
| 9 | アトム取引先持株会 | 162,000 | 0.08% |
| 10 | ＢＮＹＭ ＳＡ／ＮＶ ＦＯＲ ＢＮＹＭ ＦＯＲ ＢＮＹＭ ＧＣＭ ＣＬＩＥＮＴ ＡＣＣＴＳ Ｍ ＩＬＭ ＦＥ（常任代理人 株式会社三菱ＵＦＪ銀行決済事業部） | 146,000 | 0.08% |
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.