大株主の所有状況（株式数、持株比率）
[{"name":"東日本旅客鉄道株式会社","value":2761000,"percentage":19.75},{"name":"日本マスタートラスト信託銀行株式会社（信託口）","value":1697000,"percentage":12.14},{"name":"鹿島建設株式会社","value":470000,"percentage":3.36},{"name":"株式会社日本カストディ銀行（信託口）","value":389000,"percentage":2.79},{"name":"鉄建職員持株会","value":287000,"percentage":2.06},{"name":"鉄建取引先持株会","value":202000,"percentage":1.45},{"name":"JP JPMSE LUX RE NOMURA INT PLC 1 EQ CO（常任代理人 株式会社三菱UFJ銀行決済事業部）","value":173000,"percentage":1.24},{"name":"株式会社三菱UFJ銀行","value":169000,"percentage":1.21},{"name":"東海旅客鉄道株式会社","value":150000,"percentage":1.07},{"name":"JP MORGAN CHASE BANK 385781（常任代理人 株式会社みずほ銀行決済営業部）","value":142000,"percentage":1.02}]
上位10株主の持株比率合計は46.09%です。
所有者別構成（単元数、持株比率）
[{"name":"金融機関","value":28397,"percentage":19.06},{"name":"金融商品取引業者","value":1860,"percentage":1.25},{"name":"その他の法人","value":39904,"percentage":26.79},{"name":"個人以外","value":0,"percentage":8.22},{"name":"個人","value":0,"percentage":0.01},{"name":"個人その他","value":66536,"percentage":44.67}]