|
（単位：千株）
|
2016/03
|
2017/03
|
2018/03
|
2019/03
|
2020/03
|
2021/03
|
2022/03
|
2023/03
|
2024/03
|
2025/03
|
|
イワブチ取引先持株会
|
|
|
|
|
8.23%
|
8.62%
|
9.08%
|
9.73%
|
10.09%
|
10.41%
|
|
住友商事
|
|
|
|
|
8.38%
|
5.59%
|
4.65%
|
4.66%
|
4.66%
|
4.66%
|
|
松井証券
|
|
|
|
|
-
|
-
|
-
|
-
|
4.87%
|
3.87%
|
|
公益財団法人光奨学会
|
|
|
|
|
3.54%
|
3.54%
|
3.54%
|
3.54%
|
3.54%
|
3.54%
|
|
イワブチグループ従業員持株会
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
3.48%
|
|
常陽銀行
|
|
|
|
|
3.34%
|
3.34%
|
3.34%
|
3.34%
|
3.34%
|
3.34%
|
|
日本製鉄
|
|
|
|
|
2.98%
|
2.98%
|
2.98%
|
2.98%
|
2.98%
|
2.98%
|
|
三井住友信託銀行
|
|
|
|
|
3.54%
|
3.54%
|
2.91%
|
2.83%
|
2.83%
|
2.83%
|
|
光岡 毅
|
|
|
|
|
-
|
-
|
-
|
2.12%
|
2.12%
|
2.12%
|
|
損害保険ジャパン
|
|
|
|
|
-
|
3.71%
|
3.15%
|
1.58%
|
-
|
1.58%
|
|
イワブチ従業員持株会
|
|
|
|
|
3.47%
|
3.71%
|
3.89%
|
3.63%
|
3.45%
|
-
|
|
INTERACTIVE BROKERS LLC
|
|
|
|
|
-
|
-
|
-
|
1.68%
|
1.76%
|
-
|
|
光岡 毅
|
|
|
|
|
2.27%
|
2.27%
|
2.19%
|
-
|
-
|
-
|
|
野村信託銀行
|
|
|
|
|
-
|
-
|
1.99%
|
-
|
-
|
-
|
|
山口プレス工業
|
|
|
|
|
1.52%
|
1.52%
|
-
|
-
|
-
|
-
|
|
損害保険ジャパン日本興亜
|
|
|
|
|
3.7%
|
-
|
-
|
-
|
-
|
-
|
|
新日鐵住金
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
光通信
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
みずほ銀行
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
計
|
|
|
|
|
40.97%
|
38.82%
|
37.72%
|
36.09%
|
39.64%
|
38.81%
|