{
  "commentary": [
    {
      "heading": null,
      "paragraphs": [
        "FY79時点では三菱銀行9.81%・三菱信託銀行7.15%・明治生命6.99%・三菱商事3.49%と三菱グループ親密株主に常陽銀行など旧来の取引銀行が並ぶ構成だった。",
        "FY24では日本マスタートラスト信託銀行19.15%、SG/INV9.40%、日本カストディ銀行5.47%へ刷新され、機関化が進む一方で明治安田生命5.35%や常陽銀行1.86%など三菱・旧取引筋の系譜は残存している。"
      ]
    }
  ],
  "shareholders": [
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行(株)(信託口)",
      "shareholding_ratio": 7.43,
      "shares_held": 29819000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 2,
      "name": "日本トラスティ・サービス信託銀行(株)(信託口)",
      "shareholding_ratio": 7.36,
      "shares_held": 29518000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 3,
      "name": "明治安田生命保険(相)",
      "shareholding_ratio": 4.87,
      "shares_held": 19537000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 4,
      "name": "日本トラスティ・サービス信託銀行(株)（信託口９）",
      "shareholding_ratio": 2.57,
      "shares_held": 10308000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 5,
      "name": "(株)三菱東京UFJ銀行",
      "shareholding_ratio": 1.84,
      "shares_held": 7378000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 6,
      "name": "(株)常陽銀行",
      "shareholding_ratio": 1.69,
      "shares_held": 6801000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 7,
      "name": "日本生命保険(相)",
      "shareholding_ratio": 1.67,
      "shares_held": 6709000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 8,
      "name": "BNYML - NON TREATY ACCOUNT(常任代理人 (株)三菱東京UFJ銀行決済事業部)",
      "shareholding_ratio": 1.66,
      "shares_held": 6661000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 9,
      "name": "東京海上日動火災保険(株)",
      "shareholding_ratio": 1.5,
      "shares_held": 6041000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 10,
      "name": "三菱UFJ信託銀行(株)",
      "shareholding_ratio": 1.36,
      "shares_held": 5481000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行(株)(信託口)",
      "shareholding_ratio": 8.06,
      "shares_held": 32295000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 2,
      "name": "日本トラスティ・サービス信託銀行(株)(信託口)",
      "shareholding_ratio": 6.07,
      "shares_held": 24344000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 3,
      "name": "明治安田生命保険(相)",
      "shareholding_ratio": 4.87,
      "shares_held": 19537000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 4,
      "name": "日本トラスティ・サービス信託銀行(株)（信託口９）",
      "shareholding_ratio": 2.09,
      "shares_held": 8364000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 5,
      "name": "(株)三菱東京ＵＦＪ銀行",
      "shareholding_ratio": 1.84,
      "shares_held": 7378000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 6,
      "name": "(株)常陽銀行",
      "shareholding_ratio": 1.7,
      "shares_held": 6801000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 7,
      "name": "日本生命保険(相)",
      "shareholding_ratio": 1.67,
      "shares_held": 6710000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 8,
      "name": "NORTHERN TRUST CO. (AVFC) RE THE KILTEARN GLOBAL EQUITY FUND（常任代理人：香港上海銀行東京支店）",
      "shareholding_ratio": 1.67,
      "shares_held": 6709000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 9,
      "name": "日本トラスティ・サービス信託銀行(株)（信託口５）",
      "shareholding_ratio": 1.6,
      "shares_held": 6402000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 10,
      "name": "東京海上日動火災保険(株)",
      "shareholding_ratio": 1.51,
      "shares_held": 6042000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行(株)（信託口）",
      "shareholding_ratio": 10.2,
      "shares_held": 40453000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 2,
      "name": "日本トラスティ・サービス信託銀行(株)（信託口）",
      "shareholding_ratio": 7.91,
      "shares_held": 31379000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 3,
      "name": "明治安田生命保険(相)",
      "shareholding_ratio": 4.92,
      "shares_held": 19537000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 4,
      "name": "(株)三菱東京ＵＦＪ銀行",
      "shareholding_ratio": 1.86,
      "shares_held": 7378000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 5,
      "name": "STATE STREET BANK AND TRUST COMPANY 505001(常任代理人 (株)みずほ銀行決済事業部)",
      "shareholding_ratio": 1.84,
      "shares_held": 7285000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 6,
      "name": "(株)常陽銀行",
      "shareholding_ratio": 1.71,
      "shares_held": 6801000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 7,
      "name": "STATE STREET BANK WEST CLIENT - TREATY 505234(常任代理人 (株)みずほ銀行決済営業部)",
      "shareholding_ratio": 1.69,
      "shares_held": 6723000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 8,
      "name": "日本トラスティ・サービス信託銀行(株)（信託口５）",
      "shareholding_ratio": 1.68,
      "shares_held": 6659000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 9,
      "name": "CHASE MANHATTAN BANK GTS CLIENTS ACCOUNT ESCROW(常任代理人 (株)みずほ銀行決済営業部)",
      "shareholding_ratio": 1.58,
      "shares_held": 6274000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 10,
      "name": "東京海上日動火災保険(株)",
      "shareholding_ratio": 1.52,
      "shares_held": 6042000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行(株)（信託口）",
      "shareholding_ratio": 11.5,
      "shares_held": 45672000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 2,
      "name": "日本トラスティ・サービス信託銀行(株)（信託口）",
      "shareholding_ratio": 7.9,
      "shares_held": 31378000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 3,
      "name": "明治安田生命保険(相)",
      "shareholding_ratio": 4.9,
      "shares_held": 19537000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 4,
      "name": "(株)三菱ＵＦＪ銀行",
      "shareholding_ratio": 1.9,
      "shares_held": 7378000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 5,
      "name": "日本トラスティ・サービス信託銀行(株)（信託口５)",
      "shareholding_ratio": 1.7,
      "shares_held": 6836000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 6,
      "name": "(株)常陽銀行",
      "shareholding_ratio": 1.7,
      "shares_held": 6801000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 7,
      "name": "日本トラスティ・サービス信託銀行(株)（信託口９）",
      "shareholding_ratio": 1.6,
      "shares_held": 6267000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 8,
      "name": "三菱ＵＦＪ信託銀行(株)",
      "shareholding_ratio": 1.4,
      "shares_held": 5481000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 9,
      "name": "ＪＰモルガン証券株式会社",
      "shareholding_ratio": 1.4,
      "shares_held": 5455000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "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": 1.4,
      "shares_held": 5403000
    },
    {
      "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": 12.5,
      "shares_held": 45881000
    },
    {
      "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": 5.5,
      "shares_held": 20106000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 3,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 5.3,
      "shares_held": 19537000
    },
    {
      "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７）",
      "shareholding_ratio": 2.1,
      "shares_held": 7692000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 5,
      "name": "株式会社三菱ＵＦＪ銀行",
      "shareholding_ratio": 2,
      "shares_held": 7378000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 6,
      "name": "株式会社常陽銀行",
      "shareholding_ratio": 1.8,
      "shares_held": 6801000
    },
    {
      "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": 1.8,
      "shares_held": 6598000
    },
    {
      "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": 1.4,
      "shares_held": 5074000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 9,
      "name": "株式会社静岡銀行",
      "shareholding_ratio": 1.4,
      "shares_held": 4996000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 10,
      "name": "三菱重工業株式会社",
      "shareholding_ratio": 1.3,
      "shares_held": 4828000
    },
    {
      "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": 12.7,
      "shares_held": 46821000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 2,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 5.3,
      "shares_held": 19537000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 3,
      "name": "株式会社日本カストディ銀行（信託口）",
      "shareholding_ratio": 5.3,
      "shares_held": 19474000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 4,
      "name": "株式会社三菱UFJ銀行",
      "shareholding_ratio": 1.9,
      "shares_held": 7009000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 5,
      "name": "株式会社常陽銀行",
      "shareholding_ratio": 1.8,
      "shares_held": 6801000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 6,
      "name": "株式会社日本カストディ銀行（信託口７）",
      "shareholding_ratio": 1.8,
      "shares_held": 6437000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 7,
      "name": "SSBTC CLIENT OMNIBUS ACCOUNT (常任代理人 香港上海銀行東京支店)",
      "shareholding_ratio": 1.6,
      "shares_held": 6013000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 8,
      "name": "株式会社静岡銀行",
      "shareholding_ratio": 1.4,
      "shares_held": 4996000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 9,
      "name": "三菱重工業株式会社",
      "shareholding_ratio": 1.3,
      "shares_held": 4828000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 10,
      "name": "日本生命保険相互会社",
      "shareholding_ratio": 1.3,
      "shares_held": 4697000
    },
    {
      "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": 20.3,
      "shares_held": 74622000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 2,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 5.3,
      "shares_held": 19537000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 3,
      "name": "株式会社日本カストディ銀行（信託口）",
      "shareholding_ratio": 5.3,
      "shares_held": 19356000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 4,
      "name": "SSBTC CLIENT OMNIBUS ACCOUNT(常任代理人 香港上海銀行東京支店)",
      "shareholding_ratio": 1.9,
      "shares_held": 7154000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 5,
      "name": "株式会社三菱ＵＦＪ銀行",
      "shareholding_ratio": 1.9,
      "shares_held": 7009000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 6,
      "name": "株式会社常陽銀行",
      "shareholding_ratio": 1.7,
      "shares_held": 6121000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 7,
      "name": "STATE STREET BANK AND TRUST COMPANY 505001(株式会社みずほ銀行決済営業部)",
      "shareholding_ratio": 1.4,
      "shares_held": 5110000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 8,
      "name": "株式会社静岡銀行",
      "shareholding_ratio": 1.4,
      "shares_held": 4996000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 9,
      "name": "日本生命保険相互会社",
      "shareholding_ratio": 1.3,
      "shares_held": 4697000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 10,
      "name": "JP MORGAN CHASE BANK 385781(株式会社みずほ銀行決済営業部)",
      "shareholding_ratio": 1.1,
      "shares_held": 4213000
    },
    {
      "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": 19.6,
      "shares_held": 67752000
    },
    {
      "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": 5.9,
      "shares_held": 20399000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 3,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 5.1,
      "shares_held": 17584000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 4,
      "name": "STATE STREET BANK AND TRUST COMPANY 505001(株式会社みずほ銀行決済営業部)",
      "shareholding_ratio": 2.1,
      "shares_held": 7409000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 5,
      "name": "株式会社三菱ＵＦＪ銀行",
      "shareholding_ratio": 2,
      "shares_held": 7009000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 6,
      "name": "株式会社常陽銀行",
      "shareholding_ratio": 1.8,
      "shares_held": 6121000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 7,
      "name": "SSBTC CLIENT OMNIBUS ACCOUNT(常任代理人 香港上海銀行東京支店)",
      "shareholding_ratio": 1.7,
      "shares_held": 6003000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 8,
      "name": "HSBC BANK PLC A/C M AND G (ACS)(常任代理人 香港上海銀行東京支店)",
      "shareholding_ratio": 1.5,
      "shares_held": 5252000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 9,
      "name": "株式会社静岡銀行",
      "shareholding_ratio": 1.4,
      "shares_held": 4996000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 10,
      "name": "日本生命保険相互会社",
      "shareholding_ratio": 1.4,
      "shares_held": 4697000
    },
    {
      "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": 19.09,
      "shares_held": 66147000
    },
    {
      "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": 5.53,
      "shares_held": 19158000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 3,
      "name": "明治安田生命保険相互会社",
      "shareholding_ratio": 5.08,
      "shares_held": 17584000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 4,
      "name": "STATE STREET LONDON CARE OF STATE STREET BANK AND TRUST, BOSTON SSBTC A/C UK LONDON BRANCH CLIENTS－UNITED KINGDOM(常任代理人 香港上海銀行東京支店)",
      "shareholding_ratio": 2.47,
      "shares_held": 8556000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 5,
      "name": "株式会社三菱UFJ銀行",
      "shareholding_ratio": 2.02,
      "shares_held": 7009000
    },
    {
      "FY": "FY23",
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      "period": "1961/3",
      "company_name_at_period": "日本光学工業",
      "rank": 3,
      "name": "日本証券金融",
      "shareholding_ratio": 6.1,
      "shares_held": 748000,
      "total_shares": 12230000,
      "source": "株式会社年鑑 昭和37年版"
    },
    {
      "FY": "FY60",
      "period": "1961/3",
      "company_name_at_period": "日本光学工業",
      "rank": 4,
      "name": "三菱銀行",
      "shareholding_ratio": 4,
      "shares_held": 495000,
      "total_shares": 12230000,
      "source": "株式会社年鑑 昭和37年版"
    },
    {
      "FY": "FY60",
      "period": "1961/3",
      "company_name_at_period": "日本光学工業",
      "rank": 5,
      "name": "三菱信託銀行",
      "shareholding_ratio": 3.5,
      "shares_held": 431000,
      "total_shares": 12230000,
      "source": "株式会社年鑑 昭和37年版"
    },
    {
      "FY": "FY60",
      "period": "1961/3",
      "company_name_at_period": "日本光学工業",
      "rank": 6,
      "name": "旭硝子",
      "shareholding_ratio": 2.5,
      "shares_held": 300000,
      "total_shares": 12230000,
      "source": "株式会社年鑑 昭和37年版"
    },
    {
      "FY": "FY60",
      "period": "1961/3",
      "company_name_at_period": "日本光学工業",
      "rank": 7,
      "name": "東京海上火災",
      "shareholding_ratio": 2.3,
      "shares_held": 280000,
      "total_shares": 12230000,
      "source": "株式会社年鑑 昭和37年版"
    },
    {
      "FY": "FY60",
      "period": "1961/3",
      "company_name_at_period": "日本光学工業",
      "rank": 8,
      "name": "野村証券",
      "shareholding_ratio": 2.2,
      "shares_held": 269000,
      "total_shares": 12230000,
      "source": "株式会社年鑑 昭和37年版"
    },
    {
      "FY": "FY60",
      "period": "1961/3",
      "company_name_at_period": "日本光学工業",
      "rank": 9,
      "name": "大和銀行(信託部)",
      "shareholding_ratio": 1.6,
      "shares_held": 200000,
      "total_shares": 12230000,
      "source": "株式会社年鑑 昭和37年版"
    },
    {
      "FY": "FY60",
      "period": "1961/3",
      "company_name_at_period": "日本光学工業",
      "rank": 10,
      "name": "常陽銀行",
      "shareholding_ratio": 1.3,
      "shares_held": 158000,
      "total_shares": 12230000,
      "source": "株式会社年鑑 昭和37年版"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "日本光学工業",
      "rank": 1,
      "name": "三菱銀行",
      "shareholding_ratio": 10,
      "shares_held": 11458700,
      "total_shares": null,
      "source": "日本企業要覧 1975年版"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "日本光学工業",
      "rank": 2,
      "name": "三菱信託銀行",
      "shareholding_ratio": 6.5,
      "shares_held": 7450331,
      "total_shares": null,
      "source": "日本企業要覧 1975年版"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "日本光学工業",
      "rank": 3,
      "name": "三菱商事",
      "shareholding_ratio": 5.47,
      "shares_held": 6270331,
      "total_shares": null,
      "source": "日本企業要覧 1975年版"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "日本光学工業",
      "rank": 4,
      "name": "明治生命保険",
      "shareholding_ratio": 4.8,
      "shares_held": 5500000,
      "total_shares": null,
      "source": "日本企業要覧 1975年版"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "日本光学工業",
      "rank": 5,
      "name": "旭硝子",
      "shareholding_ratio": 3.78,
      "shares_held": 4325750,
      "total_shares": null,
      "source": "日本企業要覧 1975年版"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "日本光学工業",
      "rank": 6,
      "name": "東京海上火災保険",
      "shareholding_ratio": 2.81,
      "shares_held": 3213865,
      "total_shares": null,
      "source": "日本企業要覧 1975年版"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "日本光学工業",
      "rank": 7,
      "name": "常陽銀行",
      "shareholding_ratio": 2.36,
      "shares_held": 2705560,
      "total_shares": null,
      "source": "日本企業要覧 1975年版"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "日本光学工業",
      "rank": 8,
      "name": "第一生命保険",
      "shareholding_ratio": 2.26,
      "shares_held": 2588300,
      "total_shares": null,
      "source": "日本企業要覧 1975年版"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "日本光学工業",
      "rank": 9,
      "name": "三菱重工業",
      "shareholding_ratio": 2.06,
      "shares_held": 2359500,
      "total_shares": null,
      "source": "日本企業要覧 1975年版"
    },
    {
      "FY": "FY74",
      "period": "1975/3",
      "company_name_at_period": "日本光学工業",
      "rank": 10,
      "name": "エーレンライヒ・フォト・オプテイカル・インダストリー",
      "shareholding_ratio": 1.92,
      "shares_held": 2200000,
      "total_shares": null,
      "source": "日本企業要覧 1975年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "日本光学工業",
      "rank": 1,
      "name": "三菱銀行",
      "shareholding_ratio": 9.81,
      "shares_held": 11236000,
      "total_shares": 114587000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "日本光学工業",
      "rank": 2,
      "name": "三菱信託銀行",
      "shareholding_ratio": 7.15,
      "shares_held": 8187000,
      "total_shares": 114587000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "日本光学工業",
      "rank": 3,
      "name": "明治生命保険",
      "shareholding_ratio": 6.99,
      "shares_held": 8004000,
      "total_shares": 114587000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "日本光学工業",
      "rank": 4,
      "name": "旭硝子",
      "shareholding_ratio": 3.78,
      "shares_held": 4325000,
      "total_shares": 114587000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "日本光学工業",
      "rank": 5,
      "name": "三菱商事",
      "shareholding_ratio": 3.49,
      "shares_held": 4000000,
      "total_shares": 114587000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "日本光学工業",
      "rank": 6,
      "name": "東京海上火災保険",
      "shareholding_ratio": 3.24,
      "shares_held": 3713000,
      "total_shares": 114587000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "日本光学工業",
      "rank": 7,
      "name": "常陽銀行",
      "shareholding_ratio": 2.54,
      "shares_held": 2905000,
      "total_shares": 114587000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "日本光学工業",
      "rank": 8,
      "name": "第一生命保険",
      "shareholding_ratio": 2.5,
      "shares_held": 2869000,
      "total_shares": 114587000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "日本光学工業",
      "rank": 9,
      "name": "日本生命保険",
      "shareholding_ratio": 2.37,
      "shares_held": 2720000,
      "total_shares": 114587000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "日本光学工業",
      "rank": 10,
      "name": "三井信託銀行",
      "shareholding_ratio": 2.36,
      "shares_held": 2703000,
      "total_shares": 114587000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY05",
      "period": "2006/3",
      "company_name_at_period": "ニコン",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行",
      "shareholding_ratio": 6.95,
      "shares_held": 25702000,
      "total_shares": null,
      "source": "有価証券報告書（2006年3月期）"
    },
    {
      "FY": "FY05",
      "period": "2006/3",
      "company_name_at_period": "ニコン",
      "rank": 2,
      "name": "ステートストリートバンクアンドトラストカンパニー",
      "shareholding_ratio": 6.11,
      "shares_held": 22601000,
      "total_shares": null,
      "source": "有価証券報告書（2006年3月期）"
    },
    {
      "FY": "FY05",
      "period": "2006/3",
      "company_name_at_period": "ニコン",
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      "name": "明治安田生命保険",
      "shareholding_ratio": 5.56,
      "shares_held": 20565000,
      "total_shares": null,
      "source": "有価証券報告書（2006年3月期）"
    },
    {
      "FY": "FY05",
      "period": "2006/3",
      "company_name_at_period": "ニコン",
      "rank": 4,
      "name": "日本トラスティ・サービス信託銀行",
      "shareholding_ratio": 5.06,
      "shares_held": 18736000,
      "total_shares": null,
      "source": "有価証券報告書（2006年3月期）"
    },
    {
      "FY": "FY05",
      "period": "2006/3",
      "company_name_at_period": "ニコン",
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      "name": "ザチェースマンハッタンバンクエヌエイロンドン",
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      "total_shares": null,
      "source": "有価証券報告書（2006年3月期）"
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    {
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      "name": "三菱東京UFJ銀行",
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      "source": "有価証券報告書（2006年3月期）"
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    {
      "FY": "FY05",
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      "company_name_at_period": "ニコン",
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      "name": "東京海上日動火災保険",
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      "shares_held": 10067000,
      "total_shares": null,
      "source": "有価証券報告書（2006年3月期）"
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    {
      "FY": "FY05",
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      "name": "三菱UFJ信託銀行",
      "shareholding_ratio": 2.47,
      "shares_held": 9134000,
      "total_shares": null,
      "source": "有価証券報告書（2006年3月期）"
    },
    {
      "FY": "FY05",
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      "rank": 9,
      "name": "日本生命保険",
      "shareholding_ratio": 2.37,
      "shares_held": 8769000,
      "total_shares": null,
      "source": "有価証券報告書（2006年3月期）"
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    {
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      "shares_held": 6801000,
      "total_shares": null,
      "source": "有価証券報告書（2006年3月期）"
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      "company_name_at_period": "ニコン",
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      "shareholding_ratio": 8.99,
      "shares_held": 36039000,
      "total_shares": null,
      "source": "有価証券報告書（2010年3月期）"
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    {
      "FY": "FY09",
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      "company_name_at_period": "ニコン",
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      "name": "日本トラスティ・サービス信託銀行（信託口）",
      "shareholding_ratio": 6.58,
      "shares_held": 26382000,
      "total_shares": null,
      "source": "有価証券報告書（2010年3月期）"
    },
    {
      "FY": "FY09",
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      "name": "明治安田生命保険",
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      "shares_held": 20565000,
      "total_shares": null,
      "source": "有価証券報告書（2010年3月期）"
    },
    {
      "FY": "FY09",
      "period": "2010/3",
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      "total_shares": null,
      "source": "有価証券報告書（2010年3月期）"
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    {
      "FY": "FY09",
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      "source": "有価証券報告書（2010年3月期）"
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    {
      "FY": "FY09",
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      "source": "有価証券報告書（2010年3月期）"
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    {
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      "name": "東京海上日動火災保険",
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      "source": "有価証券報告書（2010年3月期）"
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    {
      "FY": "FY09",
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      "source": "有価証券報告書（2010年3月期）"
    },
    {
      "FY": "FY09",
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      "rank": 9,
      "name": "日本生命保険",
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      "total_shares": null,
      "source": "有価証券報告書（2010年3月期）"
    },
    {
      "FY": "FY09",
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      "total_shares": null,
      "source": "有価証券報告書（2010年3月期）"
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    {
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      "company_name_at_period": "ニコン",
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    },
    {
      "FY": "FY14",
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      "company_name_at_period": "ニコン",
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      "source": "有価証券報告書（2015年3月期）"
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    {
      "FY": "FY14",
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      "company_name_at_period": "ニコン",
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      "name": "明治安田生命保険",
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      "shares_held": 19537000,
      "total_shares": null,
      "source": "有価証券報告書（2015年3月期）"
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    {
      "FY": "FY14",
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      "source": "有価証券報告書（2015年3月期）"
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    {
      "FY": "FY14",
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      "source": "有価証券報告書（2015年3月期）"
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    {
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    {
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    {
      "FY": "FY14",
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      "name": "東京海上日動火災保険",
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      "source": "有価証券報告書（2015年3月期）"
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    {
      "FY": "FY14",
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      "source": "有価証券報告書（2015年3月期）"
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    {
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      "source": "有価証券報告書（2015年3月期）"
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}