|
（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
|
|
アトミクス取引先持株会
|
|
|
|
|
|
15.19%
|
15.79%
|
16.53%
|
17.32%
|
17.14%
|
17.65%
|
|
東京中小企業投資育成
|
|
|
|
|
|
12.52%
|
12.52%
|
12.52%
|
12.52%
|
12.22%
|
12.22%
|
|
日本マスタートラスト信託銀行
|
|
|
|
|
|
1.89%
|
1.89%
|
1.89%
|
1.89%
|
1.85%
|
1.85%
|
|
西川 正洋
|
|
|
|
|
|
-
|
-
|
5.01%
|
5.01%
|
4.89%
|
4.89%
|
|
ナラサキライン
|
|
|
|
|
|
2.4%
|
2.4%
|
2.4%
|
2.4%
|
2.35%
|
2.35%
|
|
東洋テック
|
|
|
|
|
|
2.25%
|
2.25%
|
2.25%
|
2.25%
|
2.2%
|
2.2%
|
|
アトミクス社員持株会
|
|
|
|
|
|
1.9%
|
1.83%
|
1.88%
|
1.83%
|
1.89%
|
2%
|
|
楠本化成
|
|
|
|
|
|
1.89%
|
1.89%
|
1.89%
|
1.89%
|
1.85%
|
1.85%
|
|
ケーシー工業
|
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
1.74%
|
|
日本カストディ銀行
|
|
|
|
|
|
5.74%
|
5.74%
|
5.74%
|
5.74%
|
4.58%
|
-
|
|
西 川 正 洋
|
|
|
|
|
|
5.01%
|
5.01%
|
-
|
-
|
-
|
-
|
|
西川不動産
|
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
日本トラスティ・サービス信託銀行
|
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
光通信
|
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
計
|
|
|
|
|
|
54.12%
|
54.4%
|
55.05%
|
55.71%
|
56.07%
|
53.79%
|