|
（単位：千株）
|
2016/02
|
2017/02
|
2018/02
|
2019/02
|
2020/02
|
2021/02
|
2022/02
|
2023/02
|
2024/02
|
2025/02
|
|
学研ホールディングス
|
|
|
|
|
37.65%
|
39.69%
|
39.42%
|
40.04%
|
40.11%
|
49.03%
|
|
梅田 威男
|
|
|
|
|
10.23%
|
5.36%
|
5.33%
|
3.61%
|
3.61%
|
4.42%
|
|
ウィザス
|
|
|
|
|
2.07%
|
2.18%
|
2.17%
|
2.2%
|
2.21%
|
3.92%
|
|
市進グループ社員持株会
|
|
|
|
|
4.07%
|
3.99%
|
3.98%
|
2.77%
|
2.67%
|
2.74%
|
|
ブルースカイ
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
2.45%
|
|
千葉銀行
|
|
|
|
|
2.32%
|
2.44%
|
2.43%
|
2.46%
|
1.46%
|
1.79%
|
|
田代 英壽
|
|
|
|
|
1.41%
|
1.49%
|
1.48%
|
1%
|
1%
|
1.22%
|
|
下屋 俊裕
|
|
|
|
|
-
|
-
|
-
|
0.56%
|
0.64%
|
0.78%
|
|
横田 浩二
|
|
|
|
|
-
|
-
|
-
|
0.57%
|
0.57%
|
0.69%
|
|
朝賀 万紀
|
|
|
|
|
-
|
-
|
0.52%
|
-
|
0.55%
|
0.67%
|
|
学究社
|
|
|
|
|
20.38%
|
21.47%
|
21.32%
|
21.66%
|
21.7%
|
-
|
|
エデュ・リサーチ・アジア
|
|
|
|
|
0.56%
|
0.73%
|
0.72%
|
0.64%
|
-
|
-
|
|
東方地所
|
|
|
|
|
0.49%
|
0.52%
|
0.52%
|
-
|
-
|
-
|
|
進学会ホールディングス
|
|
|
|
|
1.14%
|
1.17%
|
-
|
-
|
-
|
-
|
|
河端 真一
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
あけぼの事務所
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
金野 光宏
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
増進会出版社
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
進学会
|
|
|
|
|
-
|
-
|
-
|
-
|
-
|
-
|
|
計
|
|
|
|
|
80.32%
|
79.04%
|
77.89%
|
75.51%
|
74.56%
|
67.77%
|