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      "shareholding_ratio": 4.48,
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      "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）",
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      "rank": 6,
      "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": 2.3,
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      "company_name_at_period": "三共",
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      "shareholding_ratio": 2.3,
      "shares_held": 3816000,
      "total_shares": 165600000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "三共",
      "rank": 6,
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      "shares_held": 3791000,
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      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "三共",
      "rank": 7,
      "name": "三井銀行",
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      "shares_held": 3162000,
      "total_shares": 165600000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "三共",
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      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "三共",
      "rank": 9,
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      "shares_held": 3022000,
      "total_shares": 165600000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY79",
      "period": "1980/3",
      "company_name_at_period": "三共",
      "rank": 10,
      "name": "呉羽化学工業",
      "shareholding_ratio": 1.81,
      "shares_held": 3000000,
      "total_shares": 165600000,
      "source": "企業系列総覧 1981年版"
    },
    {
      "FY": "FY05",
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      "company_name_at_period": "第一三共",
      "rank": 1,
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      "total_shares": null,
      "source": "有価証券報告書（2006年3月期）"
    },
    {
      "FY": "FY05",
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      "company_name_at_period": "第一三共",
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      "source": "有価証券報告書（2006年3月期）"
    },
    {
      "FY": "FY05",
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      "company_name_at_period": "第一三共",
      "rank": 3,
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      "source": "有価証券報告書（2006年3月期）"
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    {
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      "source": "有価証券報告書（2006年3月期）"
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      "source": "有価証券報告書（2006年3月期）"
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      "source": "有価証券報告書（2006年3月期）"
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      "source": "有価証券報告書（2006年3月期）"
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      "source": "有価証券報告書（2010年3月期）"
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      "source": "有価証券報告書（2010年3月期）"
    },
    {
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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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      "source": "有価証券報告書（2010年3月期）"
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      "source": "有価証券報告書（2010年3月期）"
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      "source": "有価証券報告書（2010年3月期）"
    },
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      "period": "2015/3",
      "company_name_at_period": "第一三共",
      "rank": 1,
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      "source": "有価証券報告書（2015年3月期）"
    },
    {
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      "period": "2015/3",
      "company_name_at_period": "第一三共",
      "rank": 2,
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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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      "rank": 4,
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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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}
