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      "shares_held": 94753000
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      "period": "2020/3",
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      "name": "STATE STREET BANK AND TRUST COMPANY 505001 （常任代理人 株式会社みずほ 銀行決済営業部）",
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      "name": "日本トラスティ・サービス 信託銀行株式会社（信託口９）",
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      "shares_held": 2651000
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      "period": "2020/3",
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      "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）",
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      "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": 0.89,
      "shares_held": 1834000
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    {
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      "period": "2020/3",
      "rank": 10,
      "name": "SSBTC CLIENT OMNIBUS ACCOUNT （常任代理人 香港上海銀行 東京支店 カストディ業務部）",
      "shareholding_ratio": 0.85,
      "shares_held": 1755000
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      "period": "2021/3",
      "rank": 1,
      "name": "東京電力パワーグリッド株式会社",
      "shareholding_ratio": 46.38,
      "shares_held": 94753000
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      "name": "日本マスタートラスト 信託銀行株式会社（信託口）",
      "shareholding_ratio": 5.15,
      "shares_held": 10537000
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      "rank": 3,
      "name": "株式会社日本カストディ銀行（信託口）",
      "shareholding_ratio": 3.44,
      "shares_held": 7042000
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      "name": "関電工グループ従業員持株会",
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      "shares_held": 5994000
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      "period": "2021/3",
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      "shares_held": 4061000
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      "period": "2021/3",
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      "name": "STATE STREET BANK AND TRUST COMPANY 505001 （常任代理人 株式会社みずほ 銀行決済営業部）",
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      "shares_held": 2436000
    },
    {
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      "period": "2021/3",
      "rank": 7,
      "name": "THE BANK OF NEW YORK, TREATY JASDEC ACCOUNT （常任代理人 株式会社三菱UFJ銀行）",
      "shareholding_ratio": 1.04,
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    },
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      "period": "2021/3",
      "rank": 8,
      "name": "GOVERNMENT OF NORWAY （常任代理人 シティバンク、エヌ・エイ東京支店）",
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    },
    {
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      "period": "2021/3",
      "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）",
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      "shares_held": 1584000
    },
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      "name": "株式会社日本カストディ銀行（信託口５）",
      "shareholding_ratio": 0.76,
      "shares_held": 1563000
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      "rank": 1,
      "name": "東京電力パワーグリッド株式会社",
      "shareholding_ratio": 46.37,
      "shares_held": 94753000
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      "period": "2022/3",
      "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": 7.94,
      "shares_held": 16228000
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    {
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      "rank": 3,
      "name": "株式会社日本カストディ銀行（信託口）",
      "shareholding_ratio": 3.55,
      "shares_held": 7267000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 4,
      "name": "関電工グループ従業員持株会",
      "shareholding_ratio": 3.07,
      "shares_held": 6273000
    },
    {
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      "period": "2022/3",
      "rank": 5,
      "name": "株式会社みずほ銀行",
      "shareholding_ratio": 1.98,
      "shares_held": 4061000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 6,
      "name": "STATE STREET BANK AND TRUST COMPANY 505001 （常任代理人 株式会社みずほ 銀行決済営業部）",
      "shareholding_ratio": 1.26,
      "shares_held": 2592000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 7,
      "name": "THE BANK OF NEW YORK, TREATY JASDEC ACCOUNT （常任代理人 株式会社三菱UFJ銀行）",
      "shareholding_ratio": 1.19,
      "shares_held": 2437000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 8,
      "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": 0.7,
      "shares_held": 1430000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 9,
      "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": 0.68,
      "shares_held": 1405000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 10,
      "name": "高砂熱学工業株式会社",
      "shareholding_ratio": 0.64,
      "shares_held": 1318000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 1,
      "name": "東京電力パワーグリッド株式会社",
      "shareholding_ratio": 46.36,
      "shares_held": 94753000
    },
    {
      "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（信託口）",
      "shareholding_ratio": 7.62,
      "shares_held": 15584000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 3,
      "name": "株式会社日本カストディ銀行 （信託口）",
      "shareholding_ratio": 3.85,
      "shares_held": 7872000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 4,
      "name": "関電工グループ従業員持株会",
      "shareholding_ratio": 3.14,
      "shares_held": 6429000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 5,
      "name": "STATE STREET BANK AND TRUST COMPANY 505001 （常任代理人 株式会社みずほ 銀行決済営業部）",
      "shareholding_ratio": 1.5,
      "shares_held": 3070000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 6,
      "name": "THE BANK OF NEW YORK, TREATY JASDEC ACCOUNT （常任代理人 株式会社三菱UFJ銀行）",
      "shareholding_ratio": 1.34,
      "shares_held": 2744000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 7,
      "name": "株式会社みずほ銀行",
      "shareholding_ratio": 1.06,
      "shares_held": 2177000
    },
    {
      "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": 0.72,
      "shares_held": 1471000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 9,
      "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": 0.71,
      "shares_held": 1452000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 10,
      "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": 0.66,
      "shares_held": 1354000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 1,
      "name": "東京電力パワーグリッド株式会社",
      "shareholding_ratio": 46.36,
      "shares_held": 94753000
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    {
      "FY": "FY23",
      "period": "2024/3",
      "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": 8.15,
      "shares_held": 16665000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 3,
      "name": "株式会社日本カストディ銀行 （信託口）",
      "shareholding_ratio": 4.8,
      "shares_held": 9816000
    },
    {
      "FY": "FY23",
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