PORT INC.
TSE Growth
Shareholding pattern
As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 16.97% |
|---|---|
| Individuals | 65.86% |
| Top 10 holders | 57.94% |
| Total shareholders | 5,369 |
Who owns the company
Share of voting unitsIndividuals & others 65.86%Foreign institutions 16.97%Other corporations 6.08%Financial institutions 5.65%Securities firms 5.42%Foreign individuals 0.01%
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 | 65.86% | 5,222 |
| Foreign institutions | 16.97% | 54 |
| Other corporations | 6.08% | 62 |
| Financial institutions | 5.65% | 3 |
| Securities firms | 5.42% | 19 |
| Foreign individuals | 0.01% | 9 |
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 | 春日 博文 | 4,148,000 | 31.63% |
| 2 | 株式会社日本カストディ銀行（信託口） | 611,000 | 4.66% |
| 3 | BNY GCM CLIENT ACCOUNT JPRD AC ISG (FE-AC)(常任代理人 株式会社三菱ＵＦＪ銀行) | 574,000 | 4.38% |
| 4 | NOMURA PB NOMINEES LIMITED OMNIBUS-MARGIN (CASHPB)(常任代理人 野村證券株式会社) | 447,000 | 3.41% |
| 5 | 丸山 侑佑 | 391,000 | 2.98% |
| 6 | セントラル短資株式会社 | 341,000 | 2.60% |
| 7 | 新沼 吾史 | 300,000 | 2.29% |
| 8 | 株式会社ＳＢＩ証券 | 299,000 | 2.28% |
| 9 | 株式会社チェンジホールディングス | 269,000 | 2.05% |
| 10 | 西村 裕二 | 217,000 | 1.66% |
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.