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 | 2026/03 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 日本マスタートラスト信託銀行 | 554 2.38% | 708 3.05% | 873 3.76% | 1,201 5.16% | 3,011 12.93% | 2,530 10.87% | 5,347 11.64% | 4,236 9.32% | |||
| STATE STREET BANK AND TRUST COMPANY | 3,673 8% | 4,192 9.22% | |||||||||
| 日本カストディ銀行 | 635 2.73% | 669 2.87% | 1,614 6.93% | 1,563 6.72% | 3,008 6.55% | 2,556 5.62% | |||||
| BANK LOMBARD ODIER AND CO LTD GENEVA | 1,206 5.18% | 2,413 5.25% | 2,413 5.31% | ||||||||
| 第一生命保険 | 1,200 5.07% | 1,200 5.07% | 1,200 5.16% | 1,200 5.16% | 1,200 5.16% | 1,200 5.16% | 1,200 5.16% | 1,200 5.15% | 1,200 5.15% | 2,400 5.22% | 2,400 5.28% |
| 理研計器協力会社持株会 | 1,251 5.29% | 1,261 5.33% | 1,049 4.51% | 1,043 4.49% | 1,061 4.57% | 1,085 4.67% | 1,085 4.66% | 1,090 4.68% | 1,040 4.47% | 2,057 4.48% | 1,983 4.36% |
| みずほ銀行 | 1,135 4.8% | 1,135 4.8% | 1,135 4.88% | 1,135 4.88% | 1,135 4.88% | 1,135 4.88% | 1,135 4.88% | 1,135 4.88% | 950 4.08% | 1,800 3.92% | 1,800 3.96% |
| 長野計器 | 711 3% | 711 3% | 711 3.06% | 711 3.06% | 711 3.06% | 711 3.06% | 711 3.05% | 711 3.05% | 711 3.05% | 1,422 3.1% | 1,422 3.13% |
| 三井住友銀行 | 837 3.54% | 837 3.54% | 837 3.6% | 837 3.6% | 837 3.6% | 837 3.6% | 837 3.6% | 837 3.6% | 837 3.59% | 1,327 2.89% | 1,327 2.92% |
| BNYM AS AGT/CLTS 10 PERCENT | 1,306 2.88% | ||||||||||
| 理研計器従業員持株会 | 887 3.75% | 890 3.76% | 789 3.39% | 748 3.22% | 772 3.32% | 766 3.29% | 709 3.05% | 693 2.98% | 676 2.9% | 1,292 2.81% | |
| SSBTC CLIENT OMNIBUS ACCOUNT | 538 2.31% | 1,076 4.62% | |||||||||
| Goldman Sachs Bank Europe SE, Luxembourg Branch | 1,301 5.59% | 1,290 5.54% | 1,206 5.18% | ||||||||
| 日本マスタートラスト信託銀行株式会社（信託口 | 2,611 11.22% | ||||||||||
| THE SFP VALUE REALIZATION MASTER FUND LTD. | 1,680 7.23% | 1,681 7.23% | 1,479 6.36% | 1,608 6.91% | |||||||
| GOLDMAN SACHS INTERNATIONAL | 1,018 4.31% | 1,215 5.23% | 1,189 5.12% | 1,177 5.07% | |||||||
| THE CHASE MANHATTAN BANK, N.A. LONDON SPECIAL OMNIBUS SECS LENDING ACCOUNT | 614 2.64% | ||||||||||
| BBH FOR FIDELITY PURITAN TR: FIDELITY SR INTRINSIC OPPORTUNITIES FUND | 550 2.37% | 550 2.37% | |||||||||
| THE SFP VALUE REALIZATION MASTER FUND LIMITED | 1,658 7.01% | 1,675 7.21% | |||||||||
| BNY GCM CLIENT ACCOUNT JPRD AC ISG | 1,986 8.4% | ||||||||||
| THE CHASE MANHATTAN BANK， N．A． LONDON SPECIAL OMNIBUS SECS LENDING ACCOUNT | 767 3.24% | ||||||||||
| KBL EPB S．A． | 501 2.12% | ||||||||||
| 損害保険ジャパン日本興亜 | 982 4.15% | ||||||||||
| 日本トラスティ・サービス信託銀行 | 916 3.87% | ||||||||||
| ザ チェース マンハッタン バンク エヌエイ ロンドン スペシャル オムニバス エス エル アカウント | 752 3.18% | ||||||||||
| 計 | 10,332 43.67% | 10,309 43.57% | 9,717 41.79% | 9,802 42.16% | 10,064 43.28% | 10,351 44.5% | 11,857 50.9% | 12,038 51.7% | 11,791 50.64% | 24,742 53.86% | 23,638 52% |