大株主の所有状況（株式数、持株比率）
[{"name":"公益財団法人古岡奨学会","value":5555000,"percentage":"13.15"},{"name":"日本マスタートラスト信託銀行株式会社（信託口）","value":4469000,"percentage":"10.58"},{"name":"BNP PARIBAS LUXEMBOURG/2S/JASDEC/JANUS HENDERSON HORIZON FUND（常任代理人 香港上海銀行東京支店）","value":1202000,"percentage":"2.84"},{"name":"株式会社三井住友銀行","value":1200000,"percentage":"2.84"},{"name":"学研従業員持株会","value":1191000,"percentage":"2.82"},{"name":"株式会社河合楽器製作所","value":994000,"percentage":"2.35"},{"name":"株式会社日本カストディ銀行（信託口）","value":967000,"percentage":"2.29"},{"name":"株式会社日本政策投資銀行","value":948000,"percentage":"2.24"},{"name":"学研ビジネスパートナー持株会","value":921000,"percentage":"2.18"},{"name":"株式会社広済堂ホールディングス","value":689000,"percentage":"1.63"}]
上位10株主の持株比率合計は42.92%です。
所有者別構成（単元数、持株比率）
[{"name":"個人その他","value":180703,"percentage":"40.56"},{"name":"その他の法人","value":107251,"percentage":"24.07"},{"name":"金融機関","value":87994,"percentage":"19.75"},{"name":"個人以外","value":0,"percentage":"12.88"},{"name":"金融商品取引業者","value":12020,"percentage":"2.7"},{"name":"個人","value":0,"percentage":"0.05"}]