大株主
| （単位：千株） | 2016/03 | 2017/03 | 2018/03 | 2019/03 | 2020/03 | 2021/03 | 2022/03 | 2023/03 | 2024/03 | 2025/03 |
|---|---|---|---|---|---|---|---|---|---|---|
| 日本電設工業 | 2,095 11.63% | 2,095 11.63% | 2,095 11.78% | 2,095 11.78% | 2,095 11.78% | 2,095 11.78% | 2,095 11.78% | 2,095 11.78% | 2,095 11.78% | 2,395 14.93% |
| 大同信号取引先持株会 | 711 3.95% | 763 4.24% | 792 4.46% | 828 4.66% | 855 4.81% | 833 4.68% | 864 4.86% | 786 4.42% | 816 4.59% | 851 5.31% |
| 朝日生命保険相互会社 | 715 3.97% | 715 3.97% | 715 4.02% | 715 4.02% | 715 4.02% | 715 4.02% | 715 4.02% | 715 4.02% | 715 4.02% | 715 4.46% |
| みずほ銀行 | 875 4.86% | 875 4.86% | 875 4.92% | 875 4.92% | 875 4.92% | 875 4.92% | 875 4.92% | 875 4.92% | 875 4.92% | 683 4.26% |
| 日本リーテック | 655 3.64% | 655 3.64% | 655 3.69% | 655 3.69% | 655 3.69% | 655 3.69% | 655 3.69% | 655 3.69% | 655 3.69% | 655 4.09% |
| 大同信号従業員持株会 | 565 3.18% | 606 3.78% | ||||||||
| 光パワー | 598 3.36% | 598 3.36% | 598 3.36% | 598 3.73% | ||||||
| 三井住友銀行 | 840 4.67% | 840 4.67% | 840 4.73% | 840 4.73% | 840 4.73% | 840 4.73% | 840 4.73% | 840 4.73% | 840 4.73% | 588 3.67% |
| 重田 康光 | 538 3.02% | 538 3.02% | 538 3.02% | 538 3.02% | 531 3.31% | |||||
| 大同信号共済会 | 503 2.79% | 503 3.14% | ||||||||
| 第一生命保険 | 821 4.56% | 821 4.56% | 821 4.61% | 821 4.61% | 821 4.61% | 821 4.61% | 821 4.61% | 821 4.61% | 821 4.61% | |
| 日新火災海上保険 | 555 3.08% | 555 3.08% | 555 3.12% | 555 3.12% | 555 3.12% | 555 3.12% | 555 3.12% | 555 3.12% | 555 3.12% | |
| 三菱UFJ銀行 | 544 3.06% | 544 3.06% | 544 3.06% | 544 3.06% | 544 3.06% | |||||
| 三菱東京UFJ銀行 | 544 3.02% | 544 3.02% | 544 3.06% | |||||||
| 戸部 政彦 | 538 2.99% | |||||||||
| 計 | 8,353 46.36% | 8,371 46.46% | 8,434 47.41% | 8,470 47.61% | 8,497 47.76% | 8,475 47.64% | 8,566 48.15% | 8,488 47.71% | 8,539 48% | 8,128 50.66% |