{
  "spec_version": "3",
  "endpoint": "shareholders",
  "stock_code": "1950",
  "company_name": "日本電設工業",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/1950/shareholders/",
  "api_url": "/api/1950/shareholders.json",
  "updated": "2026-08-17",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/1950/shareholders/",
  "source": {
    "primary": [
      "有価証券報告書（大株主の状況）"
    ],
    "extraction": "EDINET の XBRL から機械抽出。1990 年代以前は旧有価証券報告書・年鑑類からの転記",
    "row_field": "source",
    "caveat": "持株比率は各期の開示値そのまま。信託口の名寄せは行っていない"
  },
  "shareholders": [
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 1,
      "name": "東日本旅客鉄道株式会社",
      "shareholding_ratio": 17.75,
      "shares_held": 11598000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 2,
      "name": "日本トラスティ・サービス信託銀行株式会社",
      "shareholding_ratio": 7.91,
      "shares_held": 5166000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 3,
      "name": "日本電設工業共済会",
      "shareholding_ratio": 4.7,
      "shares_held": 3073000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 4,
      "name": "日本コンクリート工業株式会社",
      "shareholding_ratio": 4.65,
      "shares_held": 3040000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 5,
      "name": "みずほ信託銀行株式会社退職給付信託 みずほ銀行口再信託受託者 資産管理サービス信託銀行株式会社",
      "shareholding_ratio": 4.64,
      "shares_held": 3031000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 6,
      "name": "ＮＤＫグループ従業員持株会",
      "shareholding_ratio": 3.54,
      "shares_held": 2309000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 7,
      "name": "日本マスタートラスト信託銀行株式会社",
      "shareholding_ratio": 3.05,
      "shares_held": 1994000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 8,
      "name": "Ｊ．Ｐ． ＭＯＲＧＡＮ ＢＡＮＫ ＬＵＸＥＭＢＯＵＲＧ Ｓ．Ａ． ３８０５７８（株式会社みずほ銀行決済営業部）",
      "shareholding_ratio": 2.89,
      "shares_held": 1890000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 9,
      "name": "新日本空調株式会社",
      "shareholding_ratio": 1.53,
      "shares_held": 1000000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 10,
      "name": "株式会社岡村製作所",
      "shareholding_ratio": 1.29,
      "shares_held": 840000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 1,
      "name": "東日本旅客鉄道株式会社",
      "shareholding_ratio": 17.75,
      "shares_held": 11598000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 2,
      "name": "日本トラスティ・サービス信託銀行株式会社",
      "shareholding_ratio": 7.91,
      "shares_held": 5165000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 3,
      "name": "日本電設工業共済会",
      "shareholding_ratio": 4.7,
      "shares_held": 3073000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 4,
      "name": "日本コンクリート工業株式会社",
      "shareholding_ratio": 4.65,
      "shares_held": 3040000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 5,
      "name": "みずほ信託銀行株式会社退職給付信託 みずほ銀行口再信託受託者 資産管理サービス信託銀行株式会社",
      "shareholding_ratio": 4.64,
      "shares_held": 3031000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 6,
      "name": "ＮＤＫグループ従業員持株会",
      "shareholding_ratio": 3.48,
      "shares_held": 2272000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 7,
      "name": "日本マスタートラスト信託銀行株式会社",
      "shareholding_ratio": 3.15,
      "shares_held": 2058000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 8,
      "name": "Ｊ．Ｐ． ＭＯＲＧＡＮ ＢＡＮＫ ＬＵＸＥＭＢＯＵＲＧ Ｓ．Ａ． ３８０５７８（株式会社みずほ銀行決済営業部）",
      "shareholding_ratio": 2.64,
      "shares_held": 1722000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 9,
      "name": "新日本空調株式会社",
      "shareholding_ratio": 1.53,
      "shares_held": 1000000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 10,
      "name": "株式会社岡村製作所",
      "shareholding_ratio": 1.29,
      "shares_held": 840000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 1,
      "name": "東日本旅客鉄道株式会社",
      "shareholding_ratio": 18.85,
      "shares_held": 11598000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 2,
      "name": "日本トラスティ・サービス信託銀行株式会社",
      "shareholding_ratio": 9.16,
      "shares_held": 5637000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 3,
      "name": "日本電設工業共済会",
      "shareholding_ratio": 5,
      "shares_held": 3073000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 4,
      "name": "日本コンクリート工業株式会社",
      "shareholding_ratio": 4.94,
      "shares_held": 3040000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 5,
      "name": "みずほ信託銀行株式会社退職給付信託 みずほ銀行口再信託受託者 資産管理サービス信託銀行株式会社",
      "shareholding_ratio": 4.93,
      "shares_held": 3031000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 6,
      "name": "日本マスタートラスト信託銀行株式会社",
      "shareholding_ratio": 3.93,
      "shares_held": 2416000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 7,
      "name": "ＮＤＫグループ従業員持株会",
      "shareholding_ratio": 3.54,
      "shares_held": 2179000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 8,
      "name": "Ｊ．Ｐ． ＭＯＲＧＡＮ ＢＡＮＫ ＬＵＸＥＭＢＯＵＲＧ Ｓ．Ａ． ３８０５７８（株式会社みずほ銀行決済営業部）",
      "shareholding_ratio": 3.02,
      "shares_held": 1857000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 9,
      "name": "新日本空調株式会社",
      "shareholding_ratio": 1.63,
      "shares_held": 1000000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 10,
      "name": "株式会社岡村製作所",
      "shareholding_ratio": 1.37,
      "shares_held": 840000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 1,
      "name": "東日本旅客鉄道株式会社",
      "shareholding_ratio": 18.85,
      "shares_held": 11598000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 2,
      "name": "日本トラスティ・サービス信託銀行株式会社",
      "shareholding_ratio": 10,
      "shares_held": 6153000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 3,
      "name": "日本電設工業共済会",
      "shareholding_ratio": 5,
      "shares_held": 3073000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 4,
      "name": "日本コンクリート工業株式会社",
      "shareholding_ratio": 4.94,
      "shares_held": 3040000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 5,
      "name": "みずほ信託銀行株式会社退職給付信託 みずほ銀行口再信託受託者 資産管理サービス信託銀行株式会社",
      "shareholding_ratio": 4.93,
      "shares_held": 3031000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 6,
      "name": "日本マスタートラスト信託銀行株式会社",
      "shareholding_ratio": 4.56,
      "shares_held": 2807000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 7,
      "name": "ＮＤＫグループ従業員持株会",
      "shareholding_ratio": 3.45,
      "shares_held": 2125000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 8,
      "name": "Ｊ．Ｐ． ＭＯＲＧＡＮ ＢＡＮＫ ＬＵＸＥＭＢＯＵＲＧ Ｓ．Ａ． ３８０５７８（株式会社みずほ銀行決済営業部）",
      "shareholding_ratio": 3.11,
      "shares_held": 1912000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 9,
      "name": "新日本空調株式会社",
      "shareholding_ratio": 1.63,
      "shares_held": 1000000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 10,
      "name": "株式会社オカムラ",
      "shareholding_ratio": 1.37,
      "shares_held": 840000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 1,
      "name": "東日本旅客鉄道株式会社",
      "shareholding_ratio": 18.85,
      "shares_held": 11598000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 2,
      "name": "日本トラスティ・サービス信託銀行株式会社",
      "shareholding_ratio": 9.55,
      "shares_held": 5872000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 3,
      "name": "日本マスタートラスト信託銀行株式会社",
      "shareholding_ratio": 5.63,
      "shares_held": 3465000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 4,
      "name": "日本電設工業共済会",
      "shareholding_ratio": 5,
      "shares_held": 3073000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 5,
      "name": "日本コンクリート工業株式会社",
      "shareholding_ratio": 4.94,
      "shares_held": 3040000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 6,
      "name": "みずほ信託銀行株式会社退職給付信託 みずほ銀行口再信託受託者 資産管理サービス信託銀行株式会社",
      "shareholding_ratio": 4.93,
      "shares_held": 3031000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 7,
      "name": "ＮＤＫグループ従業員持株会",
      "shareholding_ratio": 3.46,
      "shares_held": 2127000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 8,
      "name": "Ｊ．Ｐ． ＭＯＲＧＡＮ ＢＡＮＫ ＬＵＸＥＭＢＯＵＲＧ Ｓ．Ａ． ３８０５７８（株式会社みずほ銀行決済営業部）",
      "shareholding_ratio": 2.4,
      "shares_held": 1479000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 9,
      "name": "新日本空調株式会社",
      "shareholding_ratio": 1.63,
      "shares_held": 1000000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 10,
      "name": "ＮＯＲＴＨＥＲＮ ＴＲＵＳＴ ＣＯ．（ＡＶＦＣ） ＲＥ ＵＫＤＵ ＵＣＩＴＳ ＣＬＩＥＮＴＳ ＮＯＮ ＬＥＮＤＩＮＧ １０ ＰＣＴ ＴＲＥＡＴＹ ＡＣＣＯＵＮＴ（香港上海銀行東京支店 カストディ業務部）",
      "shareholding_ratio": 1.44,
      "shares_held": 888000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 1,
      "name": "東日本旅客鉄道株式会社",
      "shareholding_ratio": 18.85,
      "shares_held": 11598000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 2,
      "name": "株式会社日本カストディ銀行",
      "shareholding_ratio": 9.1,
      "shares_held": 5596000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 3,
      "name": "日本マスタートラスト信託銀行株式会社",
      "shareholding_ratio": 6.75,
      "shares_held": 4154000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 4,
      "name": "日本電設工業共済会",
      "shareholding_ratio": 5,
      "shares_held": 3073000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 5,
      "name": "日本コンクリート工業株式会社",
      "shareholding_ratio": 4.94,
      "shares_held": 3040000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 6,
      "name": "みずほ信託銀行株式会社退職給付信託 みずほ銀行口再信託受託者 株式会社日本カストディ銀行",
      "shareholding_ratio": 4.93,
      "shares_held": 3031000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 7,
      "name": "ＮＤＫグループ従業員持株会",
      "shareholding_ratio": 3.44,
      "shares_held": 2114000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 8,
      "name": "Ｊ．Ｐ． ＭＯＲＧＡＮ ＢＡＮＫ ＬＵＸＥＭＢＯＵＲＧ Ｓ．Ａ． ３８０５７８（常任代理人 株式会社みずほ銀行決済営業部）",
      "shareholding_ratio": 2.04,
      "shares_held": 1257000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 9,
      "name": "新日本空調株式会社",
      "shareholding_ratio": 1.63,
      "shares_held": 1000000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 10,
      "name": "株式会社オカムラ",
      "shareholding_ratio": 1.37,
      "shares_held": 840000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 1,
      "name": "東日本旅客鉄道株式会社",
      "shareholding_ratio": 18.85,
      "shares_held": 11598000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 2,
      "name": "日本マスタートラスト信託銀行株式会社",
      "shareholding_ratio": 11.66,
      "shares_held": 7173000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 3,
      "name": "日本電設工業共済会",
      "shareholding_ratio": 5,
      "shares_held": 3073000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 4,
      "name": "日本コンクリート工業株式会社",
      "shareholding_ratio": 4.94,
      "shares_held": 3040000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 5,
      "name": "みずほ信託銀行株式会社退職給付信託 みずほ銀行口再信託受託者 株式会社日本カストディ銀行",
      "shareholding_ratio": 4.93,
      "shares_held": 3031000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 6,
      "name": "ＮＤＫグループ従業員持株会",
      "shareholding_ratio": 3.52,
      "shares_held": 2166000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 7,
      "name": "株式会社日本カストディ銀行",
      "shareholding_ratio": 3.09,
      "shares_held": 1900000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 8,
      "name": "Ｊ．Ｐ． ＭＯＲＧＡＮ ＢＡＮＫ ＬＵＸＥＭＢＯＵＲＧ Ｓ．Ａ． ３８１５７２（常任代理人 株式会社みずほ銀行決済営業部）",
      "shareholding_ratio": 2.1,
      "shares_held": 1290000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 9,
      "name": "新日本空調株式会社",
      "shareholding_ratio": 1.63,
      "shares_held": 1000000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 10,
      "name": "株式会社オカムラ",
      "shareholding_ratio": 1.37,
      "shares_held": 840000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 1,
      "name": "東日本旅客鉄道株式会社",
      "shareholding_ratio": 18.85,
      "shares_held": 11598000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 2,
      "name": "日本マスタートラスト信託銀行株式会社",
      "shareholding_ratio": 10.92,
      "shares_held": 6719000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 3,
      "name": "日本電設工業共済会",
      "shareholding_ratio": 5,
      "shares_held": 3073000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 4,
      "name": "日本コンクリート工業株式会社",
      "shareholding_ratio": 4.94,
      "shares_held": 3040000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 5,
      "name": "みずほ信託銀行株式会社退職給付信託 みずほ銀行口再信託受託者 株式会社日本カストディ銀行",
      "shareholding_ratio": 4.93,
      "shares_held": 3031000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 6,
      "name": "ＮＤＫグループ従業員持株会",
      "shareholding_ratio": 3.6,
      "shares_held": 2212000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 7,
      "name": "株式会社日本カストディ銀行",
      "shareholding_ratio": 3.49,
      "shares_held": 2147000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 8,
      "name": "Ｊ．Ｐ． ＭＯＲＧＡＮ ＢＡＮＫ ＬＵＸＥＭＢＯＵＲＧ Ｓ．Ａ． ３８１５７２（常任代理人 株式会社みずほ銀行決済営業部）",
      "shareholding_ratio": 2.1,
      "shares_held": 1289000
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