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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 日本マスタートラスト信託銀行 | 12,884 5.98% | 11,819 5.49% | 12,898 6.28% | 14,125 6.87% | 14,940 7.27% | 18,060 8.8% | 30,191 14.68% | 26,813 13.04% | 26,315 12.8% | 20,563 9.99% |
| 北洋銀行 | 10,215 4.74% | 10,215 4.74% | 10,215 4.97% | 10,215 4.97% | 10,215 4.97% | 10,215 4.98% | 10,215 4.97% | 10,215 4.97% | 10,215 4.97% | 10,215 4.96% |
| 日本カストディ銀行 | 2,867 1.4% | 3,210 1.56% | 2,863 1.39% | 2,822 1.37% | 7,006 3.4% | |||||
| 日本生命保険相互会社 | 9,039 4.2% | 9,039 4.2% | 8,135 3.96% | 7,231 3.52% | 7,231 3.52% | 7,231 3.52% | 7,231 3.52% | 7,231 3.52% | 7,231 3.52% | 6,147 2.99% |
| 北海道電力従業員持株会 | 4,063 1.89% | 4,137 1.92% | 4,213 2.05% | 4,338 2.11% | 4,627 2.25% | 4,997 2.43% | 5,344 2.6% | 5,602 2.72% | 5,477 2.66% | 5,015 2.44% |
| 北海道銀行 | 4,131 1.92% | 4,131 1.92% | 4,131 2.01% | 4,131 2.01% | 4,131 2.01% | 4,131 2.01% | 4,131 2.01% | 4,131 2.01% | 4,131 2.01% | 4,131 2.01% |
| 明治安田生命保険相互会社 | 4,048 1.88% | 4,048 1.88% | 4,048 1.97% | 4,048 1.97% | 4,048 1.97% | 4,048 1.97% | 4,048 1.97% | 4,048 1.97% | 4,048 1.97% | 4,048 1.97% |
| CGMI - PRIME FINANCE CLEARANCE SECURITIES ACCOUNT | 3,635 1.77% | |||||||||
| UBS AG LONDON A/C IPB SEGREGATED CLIENT ACCOUNT | 3,017 1.47% | |||||||||
| THE BANK OF NEW YORK MELLON | 2,886 1.4% | |||||||||
| HAYAT | 3,181 1.48% | 2,843 1.38% | ||||||||
| JPモルガン証券 | 2,695 1.31% | |||||||||
| みずほ銀行 | 4,226 1.96% | 4,226 1.96% | 4,226 2.06% | 4,226 2.06% | 4,226 2.06% | 4,226 2.06% | 4,226 2.05% | 4,226 2.06% | ||
| 那須 功 | 2,852 1.39% | 4,067 1.98% | ||||||||
| 日本トラスティ・サービス信託銀行 | 5,575 2.59% | 3,831 1.86% | 3,263 1.59% | 3,808 1.85% | ||||||
| モルガン・スタンレーMUFG証券 | 4,470 2.18% | |||||||||
| JPMCB NA ITS LONDONCLIENTS AC MORGAN STANLEY AND CO INTERNATIONAL LIMITED | 9,572 4.45% | |||||||||
| BNY GCM CLIENT ACCOUNT JPRD AC ISG | 5,924 2.75% | |||||||||
| 日本トラスティ・サービス信託 銀行 | 6,691 3.11% | |||||||||
| DEUTSCHE BANK AG LONDON-PB NON-TREATY CLIENTS 613 | 2,970 1.38% | |||||||||
| 計 | 61,447 28.54% | 68,685 31.9% | 61,140 29.75% | 61,173 29.77% | 62,938 30.63% | 67,182 32.72% | 78,699 38.27% | 75,912 36.92% | 75,025 36.49% | 66,661 32.4% |