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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 井上 徳造 | 1,868 12.61% | 1,868 12.61% | 1,868 12.68% | 2,049 14.28% | 2,049 14.28% | 2,049 14.28% | 2,049 14.28% | 2,049 14.28% | ||
| ギガパレス | 1,472 9.91% | 1,472 9.91% | 1,472 9.94% | 1,472 9.94% | 1,472 9.99% | 1,472 10.26% | 1,472 10.26% | 1,472 10.26% | 1,472 10.26% | 1,472 10.26% |
| UH Partners 2 | 1,379 9.61% | 1,379 9.61% | ||||||||
| 光通信 | 1,446 9.82% | 1,446 10.08% | 1,446 10.08% | 1,185 8.26% | 1,185 8.26% | 1,185 8.26% | ||||
| 公益財団法人アイコム電子通信工学振興財団 | 1,000 6.73% | 1,000 6.73% | 1,000 6.75% | 1,000 6.75% | 1,000 6.78% | 1,000 6.97% | 1,000 6.97% | 1,000 6.97% | 1,000 6.97% | 1,000 6.97% |
| 日本マスタートラスト信託銀行 | 363 2.44% | 457 3.08% | 436 2.95% | 628 4.24% | 721 4.9% | 497 3.47% | 681 4.74% | 700 4.88% | 655 4.57% | 681 4.75% |
| JVCケンウッド | 445 3% | 445 3% | 445 3.01% | 445 3.01% | 445 3.02% | 445 3.1% | 445 3.1% | 445 3.1% | 445 3.1% | 445 3.1% |
| アイコム従業員持株会 | 267 1.81% | 299 2.08% | 319 2.23% | 335 2.33% | 343 2.39% | 358 2.5% | ||||
| 住友不動産 | 357 2.49% | 357 2.49% | 357 2.49% | 357 2.49% | 357 2.49% | |||||
| 明治安田生命保険相互会社 | 326 2.27% | |||||||||
| 日本カストディ銀行 | 434 3.03% | |||||||||
| UHPartners2 | 1,047 7.3% | 1,379 9.61% | 1,379 9.61% | |||||||
| 明治安田生命保険 | 326 2.19% | 326 2.19% | 326 2.2% | 326 2.2% | 326 2.21% | 326 2.27% | 326 2.27% | 326 2.27% | ||
| 日本トラスティ・サ－ビス信託銀行 | 503 3.41% | |||||||||
| 三菱UFJ銀行 | 243 1.65% | 243 1.65% | ||||||||
| SSBTC CLIENT OMNIBUS ACCOUNT | 1,166 7.87% | |||||||||
| GOLDMAN, SACHS& CO.REG | 258 1.75% | 259 1.75% | ||||||||
| 広島銀行 | 240 1.61% | 240 1.62% | 240 1.62% | |||||||
| STATE STREET BANK AND TRUST COMPANY | 1,885 12.69% | 1,926 12.97% | 1,621 10.94% | |||||||
| 三菱東京UFJ銀行 | 243 1.64% | 243 1.65% | ||||||||
| 井上徳造 | 1,868 12.58% | 1,868 12.58% | ||||||||
| UBS AG LONDON A/C IPB SEGREGATED CLIENT ACCOUNT | 256 1.72% | 266 1.79% | ||||||||
| 日本トラスティ・サービス信託銀行 | 314 2.11% | |||||||||
| JP MORGAN CHASE BANK | 304 2.04% | |||||||||
| 計 | 8,236 55.46% | 8,246 55.53% | 7,913 53.4% | 7,650 51.63% | 8,294 56.28% | 8,942 62.3% | 9,477 66.03% | 9,250 64.46% | 9,322 64.95% | 9,255 64.49% |