大株主の所有状況（株式数、持株比率）
[{"name":"伊藤忠丸紅鉄鋼株式会社","value":2500000,"percentage":"21.1"},{"name":"株式会社神戸製鋼所","value":2066000,"percentage":"17.43"},{"name":"NOMURA INTERNATIONAL PLCA/C JAPAN FLOW （常任代理人 野村證券株式会社）","value":176000,"percentage":"1.48"},{"name":"廣村 健太郎","value":173000,"percentage":"1.47"},{"name":"日本製線株式会社","value":168000,"percentage":"1.42"},{"name":"林 勇一郎","value":145000,"percentage":"1.22"},{"name":"PHILLIP SECURITIES CLIENTS (RETAIL) （常任代理人 フィリップ証券株式会社）","value":138000,"percentage":"1.16"},{"name":"鈴木 和見","value":132000,"percentage":"1.12"},{"name":"アマテイ従業員持株会","value":124000,"percentage":"1.05"},{"name":"モルガン・スタンレーMUFG証券株式会社","value":118000,"percentage":"1.0"}]
上位10株主の持株比率合計は48.45%です。
所有者別構成（単元数、持株比率）
[{"name":"個人その他","value":63414,"percentage":"51.51"},{"name":"その他の法人","value":50716,"percentage":"41.19"},{"name":"個人以外","value":0,"percentage":"3.62"},{"name":"金融商品取引業者","value":4143,"percentage":"3.36"},{"name":"個人","value":0,"percentage":"0.16"},{"name":"金融機関","value":190,"percentage":"0.15"}]