大株主の所有状況（株式数、持株比率）
[{"name":"住友電気工業株式会社","value":51534000,"percentage":"49.64"},{"name":"マルヤス工業株式会社","value":8901000,"percentage":"8.57"},{"name":"日本マスタートラスト信託銀行株式会社(信託口)","value":5660000,"percentage":"5.45"},{"name":"住友理工共栄持株会","value":2857000,"percentage":"2.75"},{"name":"住友理工社員持株会","value":1924000,"percentage":"1.85"},{"name":"株式会社日本カストディ銀行(信託口)","value":1923000,"percentage":"1.85"},{"name":"フコク物産株式会社","value":1119000,"percentage":"1.08"},{"name":"MSIP CLIENT SECURITIES(常任代理人 モルガン・スタンレーMUFG証券株式会社)","value":1035000,"percentage":"1.0"},{"name":"STATE STREET BANK AND TRUST COMPANY 505223(常任代理人 株式会社みずほ銀行)","value":929000,"percentage":"0.9"},{"name":"BNP PARIBAS LUXEMBOURG/2S/JASDEC/FIM /LUXEMBOURGFUNDS/UCITS ASSETS(常任代理人 香港上海銀行東京支店)","value":730000,"percentage":"0.7"}]
上位10株主の持株比率合計は73.79%です。
所有者別構成（単元数、持株比率）
[{"name":"その他の法人","value":656171,"percentage":"63.1"},{"name":"個人以外","value":0,"percentage":"15.61"},{"name":"個人その他","value":116667,"percentage":"11.22"},{"name":"金融機関","value":86069,"percentage":"8.28"},{"name":"金融商品取引業者","value":18543,"percentage":"1.78"},{"name":"個人","value":0,"percentage":"0.01"}]