|
（単位：千株）
|
2016/03
|
2017/03
|
2018/03
|
2019/03
|
2020/03
|
2021/03
|
2022/03
|
2023/03
|
2024/03
|
2025/03
|
|
三井金属鉱業
|
|
|
|
|
31.39%
|
32.26%
|
31.69%
|
31.71%
|
31.73%
|
31.74%
|
|
ナカボーテック取引先持株会
|
|
|
|
|
7.62%
|
8.1%
|
8.34%
|
8.64%
|
9.05%
|
8.87%
|
|
麻生
|
|
|
|
|
6%
|
6.34%
|
6.23%
|
6.24%
|
6.24%
|
6.24%
|
|
ナカボーテック社員持株会
|
|
|
|
|
6.35%
|
6.67%
|
5.62%
|
5.78%
|
5.22%
|
5.3%
|
|
日本生命保険相互会社
|
|
|
|
|
2.71%
|
2.78%
|
2.73%
|
2.74%
|
2.74%
|
2.74%
|
|
中川 哲央
|
|
|
|
|
2.58%
|
2.65%
|
2.61%
|
2.61%
|
2.61%
|
2.61%
|
|
ワイズ
|
|
|
|
|
2%
|
2.06%
|
2.02%
|
2.03%
|
2.03%
|
2.03%
|
|
三井住友信託銀行
|
|
|
|
|
2%
|
2.06%
|
2.02%
|
2.03%
|
1.96%
|
1.62%
|
|
三井住友銀行
|
|
|
|
|
2%
|
2.06%
|
2.02%
|
2.03%
|
1.9%
|
1.44%
|
|
川部 英子
|
|
|
|
|
-
|
1.14%
|
1.07%
|
1.03%
|
1.01%
|
0.99%
|
|
福田商事
|
|
|
|
|
2.09%
|
-
|
-
|
-
|
-
|
-
|
|
佐藤 兼義
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
計
|
|
|
|
|
64.8%
|
66.18%
|
64.42%
|
64.86%
|
64.53%
|
63.63%
|