{
  "spec_version": "3",
  "endpoint": "shareholders",
  "stock_code": "8334",
  "company_name": "群馬銀行",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/8334/shareholders/",
  "api_url": "/api/8334/shareholders.json",
  "updated": "2026-09-05",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/8334/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": "日本トラスティ・サービス信託銀行株式会社（信託口）",
      "shareholding_ratio": 3.67,
      "shares_held": 17307000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 2,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 2.57,
      "shares_held": 12148000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 3,
      "name": "群馬銀行従業員持株会",
      "shareholding_ratio": 2.54,
      "shares_held": 11988000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 4,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 2.34,
      "shares_held": 11056000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 5,
      "name": "住友生命保険相互会社",
      "shareholding_ratio": 2.26,
      "shares_held": 10657000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 6,
      "name": "日本マスタートラスト信託銀行株式会社（信託口）",
      "shareholding_ratio": 2.21,
      "shares_held": 10451000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 7,
      "name": "東京海上日動火災保険株式会社",
      "shareholding_ratio": 1.69,
      "shares_held": 7977000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 8,
      "name": "株式会社三菱東京ＵＦＪ銀行",
      "shareholding_ratio": 1.65,
      "shares_held": 7803000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 9,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口９）",
      "shareholding_ratio": 1.63,
      "shares_held": 7708000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 10,
      "name": "日本生命保険相互会社",
      "shareholding_ratio": 1.61,
      "shares_held": 7608000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 1,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口）",
      "shareholding_ratio": 3.74,
      "shares_held": 17623000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 2,
      "name": "群馬銀行従業員持株会",
      "shareholding_ratio": 2.62,
      "shares_held": 12342000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 3,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 2.57,
      "shares_held": 12148000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 4,
      "name": "日本マスタートラスト信託銀行株式会社（信託口）",
      "shareholding_ratio": 2.52,
      "shares_held": 11880000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 5,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口９）",
      "shareholding_ratio": 2.35,
      "shares_held": 11074000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 6,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 2.34,
      "shares_held": 11056000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 7,
      "name": "住友生命保険相互会社",
      "shareholding_ratio": 2.26,
      "shares_held": 10657000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 8,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口５）",
      "shareholding_ratio": 1.71,
      "shares_held": 8054000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 9,
      "name": "東京海上日動火災保険株式会社",
      "shareholding_ratio": 1.69,
      "shares_held": 7977000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 10,
      "name": "株式会社三菱東京ＵＦＪ銀行",
      "shareholding_ratio": 1.65,
      "shares_held": 7803000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 1,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口）",
      "shareholding_ratio": 4.45,
      "shares_held": 19337000
    },
    {
      "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（信託口９）",
      "shareholding_ratio": 4.34,
      "shares_held": 18862000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 3,
      "name": "日本マスタートラスト信託銀行株式会社（信託口）",
      "shareholding_ratio": 3.91,
      "shares_held": 16986000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 4,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 2.79,
      "shares_held": 12148000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 5,
      "name": "群馬銀行従業員持株会",
      "shareholding_ratio": 2.75,
      "shares_held": 11961000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 6,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 2.54,
      "shares_held": 11056000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 7,
      "name": "住友生命保険相互会社",
      "shareholding_ratio": 2.45,
      "shares_held": 10657000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 8,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口５）",
      "shareholding_ratio": 1.76,
      "shares_held": 7654000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 9,
      "name": "日本生命保険相互会社",
      "shareholding_ratio": 1.75,
      "shares_held": 7608000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 10,
      "name": "東洋製罐グループホールディングス株式会社",
      "shareholding_ratio": 1.68,
      "shares_held": 7330000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 1,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口）",
      "shareholding_ratio": 4.51,
      "shares_held": 19291000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 2,
      "name": "日本マスタートラスト信託銀行株式会社（信託口）",
      "shareholding_ratio": 4.06,
      "shares_held": 17344000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 3,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口9）",
      "shareholding_ratio": 3.76,
      "shares_held": 16051000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 4,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 2.84,
      "shares_held": 12148000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 5,
      "name": "群馬銀行従業員持株会",
      "shareholding_ratio": 2.8,
      "shares_held": 11983000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 6,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 2.59,
      "shares_held": 11056000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 7,
      "name": "住友生命保険相互会社",
      "shareholding_ratio": 2.49,
      "shares_held": 10657000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 8,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口4）",
      "shareholding_ratio": 1.81,
      "shares_held": 7754000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 9,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口5）",
      "shareholding_ratio": 1.8,
      "shares_held": 7723000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 10,
      "name": "日本生命保険相互会社",
      "shareholding_ratio": 1.78,
      "shares_held": 7608000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行株式会社（信託口）",
      "shareholding_ratio": 5.34,
      "shares_held": 22404000
    },
    {
      "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（信託口)",
      "shareholding_ratio": 4.76,
      "shares_held": 19998000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 3,
      "name": "群馬銀行従業員持株会",
      "shareholding_ratio": 3.01,
      "shares_held": 12633000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 4,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口9）",
      "shareholding_ratio": 2.81,
      "shares_held": 11815000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 5,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 2.63,
      "shares_held": 11056000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 6,
      "name": "住友生命保険相互会社",
      "shareholding_ratio": 2.54,
      "shares_held": 10657000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 7,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口5）",
      "shareholding_ratio": 1.88,
      "shares_held": 7887000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 8,
      "name": "日本トラスティ・サービス信託銀行株式会社（信託口4）",
      "shareholding_ratio": 1.84,
      "shares_held": 7747000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 9,
      "name": "日本生命保険相互会社",
      "shareholding_ratio": 1.81,
      "shares_held": 7608000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 10,
      "name": "JP MORGAN CHASE BANK 385151(常任代理人 株式会社みずほ銀行決済営業部)",
      "shareholding_ratio": 1.75,
      "shares_held": 7380000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行株式会社（信託口）",
      "shareholding_ratio": 6.9,
      "shares_held": 29024000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 2,
      "name": "株式会社日本カストディ銀行（信託口）",
      "shareholding_ratio": 5.01,
      "shares_held": 21069000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 3,
      "name": "群馬銀行従業員持株会",
      "shareholding_ratio": 3.12,
      "shares_held": 13146000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 4,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 2.63,
      "shares_held": 11056000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 5,
      "name": "住友生命保険相互会社",
      "shareholding_ratio": 2.53,
      "shares_held": 10657000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 6,
      "name": "株式会社日本カストディ銀行（信託口4）",
      "shareholding_ratio": 1.93,
      "shares_held": 8117000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 7,
      "name": "日本生命保険相互会社",
      "shareholding_ratio": 1.81,
      "shares_held": 7608000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 8,
      "name": "東洋製罐グループホールディングス株式会社",
      "shareholding_ratio": 1.74,
      "shares_held": 7330000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 9,
      "name": "株式会社日本カストディ銀行（信託口9）",
      "shareholding_ratio": 1.65,
      "shares_held": 6970000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 10,
      "name": "株式会社日本カストディ銀行（信託口5）",
      "shareholding_ratio": 1.48,
      "shares_held": 6224000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行株式会社（信託口）",
      "shareholding_ratio": 14.5,
      "shares_held": 59552000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 2,
      "name": "株式会社日本カストディ銀行（信託口）",
      "shareholding_ratio": 4.1,
      "shares_held": 16844000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 3,
      "name": "群馬銀行従業員持株会",
      "shareholding_ratio": 3.25,
      "shares_held": 13371000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 4,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 2.69,
      "shares_held": 11056000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 5,
      "name": "住友生命保険相互会社",
      "shareholding_ratio": 2.59,
      "shares_held": 10657000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 6,
      "name": "東洋製罐グループホールディングス株式会社",
      "shareholding_ratio": 1.78,
      "shares_held": 7330000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 7,
      "name": "日本生命保険相互会社",
      "shareholding_ratio": 1.57,
      "shares_held": 6467000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 8,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 1.44,
      "shares_held": 5948000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 9,
      "name": "株式会社日本カストディ銀行（信託口4）",
      "shareholding_ratio": 1.31,
      "shares_held": 5391000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 10,
      "name": "STATE STREET BANK WEST CLIENT-TREATY 505234（常任代理人 株式会社みずほ銀行決済営業部）",
      "shareholding_ratio": 1.22,
      "shares_held": 5035000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行株式会社(信託口)",
      "shareholding_ratio": 14.1,
      "shares_held": 57338000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 2,
      "name": "株式会社日本カストディ銀行(信託口)",
      "shareholding_ratio": 4.93,
      "shares_held": 20074000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 3,
      "name": "群馬銀行従業員持株会",
      "shareholding_ratio": 3.2,
      "shares_held": 13019000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 4,
      "name": "住友生命保険相互会社",
      "shareholding_ratio": 2.62,
      "shares_held": 10657000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 5,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 2.58,
      "shares_held": 10504000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 6,
      "name": "東洋製罐グループホールディングス株式会社",
      "shareholding_ratio": 1.8,
      "shares_held": 7330000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 7,
      "name": "日本生命保険相互会社",
      "shareholding_ratio": 1.59,
      "shares_held": 6467000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 8,
      "name": "DFA INTL SMALL CAP VALUE PORTFOLIO(常任代理人 シティバンク、エヌ・エイ 東京支店)",
      "shareholding_ratio": 1.36,
      "shares_held": 5541000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 9,
      "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)",
      "shareholding_ratio": 1.32,
      "shares_held": 5397000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 10,
      "name": "株式会社日本カストディ銀行(信託口4)",
      "shareholding_ratio": 1.3,
      "shares_held": 5319000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行株式会社(信託口)",
      "shareholding_ratio": 13.77,
      "shares_held": 54056000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 2,
      "name": "株式会社日本カストディ銀行(信託口)",
      "shareholding_ratio": 6.63,
      "shares_held": 26047000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 3,
      "name": "群馬銀行従業員持株会",
      "shareholding_ratio": 2.9,
      "shares_held": 11396000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 4,
      "name": "住友生命保険相互会社",
      "shareholding_ratio": 2.71,
      "shares_held": 10657000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 5,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 2.39,
      "shares_held": 9398000
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