{
  "spec_version": "3",
  "endpoint": "shareholders",
  "stock_code": "4205",
  "company_name": "日本ゼオン",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4205/shareholders/",
  "api_url": "/api/4205/shareholders.json",
  "updated": "2026-08-12",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/4205/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": "横浜ゴム株式会社",
      "shareholding_ratio": 9.57,
      "shares_held": 22682000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 2,
      "name": "株式会社みずほ銀行 （常任代理人 資産管理サービス信託銀行株式会社）",
      "shareholding_ratio": 4.77,
      "shares_held": 11310000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "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）",
      "shareholding_ratio": 4.38,
      "shares_held": 10387000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 4,
      "name": "朝日生命保険相互会社 （常任代理人 資産管理サービス信託銀行株式会社）",
      "shareholding_ratio": 3.24,
      "shares_held": 7679000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 5,
      "name": "全国共済農業協同組合連合会 (常任代理人 日本マスタートラスト信託銀行株式会社）",
      "shareholding_ratio": 3.14,
      "shares_held": 7450000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 6,
      "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": 2.72,
      "shares_held": 6443000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 7,
      "name": "旭化成ケミカルズ株式会社",
      "shareholding_ratio": 2.72,
      "shares_held": 6438000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 8,
      "name": "日本マスタートラスト信託銀行株式会社（信託口）",
      "shareholding_ratio": 2.27,
      "shares_held": 5381000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 9,
      "name": "農林中央金庫",
      "shareholding_ratio": 1.69,
      "shares_held": 4000000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 10,
      "name": "古河電気工業株式会社",
      "shareholding_ratio": 1.54,
      "shares_held": 3641000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 1,
      "name": "横浜ゴム株式会社",
      "shareholding_ratio": 9.57,
      "shares_held": 22682000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 2,
      "name": "株式会社みずほ銀行 （常任代理人 資産管理サービス信託銀行株式会社）",
      "shareholding_ratio": 4.67,
      "shares_held": 11066000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "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）",
      "shareholding_ratio": 3.92,
      "shares_held": 9287000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 4,
      "name": "朝日生命保険相互会社 （常任代理人 資産管理サービス信託銀行株式会社）",
      "shareholding_ratio": 3.24,
      "shares_held": 7679000
    },
    {
      "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": 3,
      "shares_held": 7112000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 6,
      "name": "全国共済農業協同組合連合会 (常任代理人 日本マスタートラスト信託銀行株式会社）",
      "shareholding_ratio": 2.94,
      "shares_held": 6970000
    },
    {
      "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（信託口）",
      "shareholding_ratio": 2.73,
      "shares_held": 6480000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 8,
      "name": "旭化成株式会社",
      "shareholding_ratio": 2.72,
      "shares_held": 6438000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 9,
      "name": "農林中央金庫",
      "shareholding_ratio": 1.69,
      "shares_held": 4000000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 10,
      "name": "日本ゼオン取引先持株会",
      "shareholding_ratio": 1.54,
      "shares_held": 3659000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 1,
      "name": "横浜ゴム株式会社",
      "shareholding_ratio": 10.22,
      "shares_held": 22682000
    },
    {
      "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）",
      "shareholding_ratio": 4.77,
      "shares_held": 10588000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 3,
      "name": "株式会社みずほ銀行 （常任代理人 資産管理サービス信託銀行株式会社）",
      "shareholding_ratio": 4.32,
      "shares_held": 9600000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 4,
      "name": "朝日生命保険相互会社 （常任代理人 資産管理サービス信託銀行株式会社）",
      "shareholding_ratio": 3.46,
      "shares_held": 7679000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 5,
      "name": "全国共済農業協同組合連合会 (常任代理人 日本マスタートラスト信託銀行株式会社）",
      "shareholding_ratio": 3.23,
      "shares_held": 7180000
    },
    {
      "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（信託口）",
      "shareholding_ratio": 3.04,
      "shares_held": 6751000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 7,
      "name": "旭化成株式会社",
      "shareholding_ratio": 2.9,
      "shares_held": 6438000
    },
    {
      "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９）",
      "shareholding_ratio": 2.43,
      "shares_held": 5403000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 9,
      "name": "ＧＯＶＥＲＮＭＥＮＴ ＯＦ ＮＯＲＷＡＹ （常任代理人 シティバンク、エヌ・エイ東京支店）",
      "shareholding_ratio": 2.09,
      "shares_held": 4642000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 10,
      "name": "農林中央金庫",
      "shareholding_ratio": 1.8,
      "shares_held": 4000000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 1,
      "name": "横浜ゴム株式会社",
      "shareholding_ratio": 10.38,
      "shares_held": 22682000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 2,
      "name": "株式会社みずほ銀行 （常任代理人 資産管理サービス信託銀行株式会社）",
      "shareholding_ratio": 4.39,
      "shares_held": 9600000
    },
    {
      "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）",
      "shareholding_ratio": 4.34,
      "shares_held": 9481000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "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": 4,
      "shares_held": 8745000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 5,
      "name": "全国共済農業協同組合連合会 (常任代理人 日本マスタートラスト信託銀行株式会社）",
      "shareholding_ratio": 3.75,
      "shares_held": 8200000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 6,
      "name": "朝日生命保険相互会社 （常任代理人 資産管理サービス信託銀行株式会社）",
      "shareholding_ratio": 3.51,
      "shares_held": 7679000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 7,
      "name": "ＢＮＹ ＧＣＭ ＣＬＩＥＮＴ ＡＣＣＯＵＮＴ ＪＰＲＤ ＡＣ Ｉ ＳＧ （ＦＥ－ＡＣ） （常任代理人 株式会社三菱ＵＦＪ銀行）",
      "shareholding_ratio": 3.05,
      "shares_held": 6674000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 8,
      "name": "旭化成株式会社",
      "shareholding_ratio": 2.95,
      "shares_held": 6438000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 9,
      "name": "農林中央金庫",
      "shareholding_ratio": 1.83,
      "shares_held": 4000000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 10,
      "name": "日本ゼオン取引先持株会",
      "shareholding_ratio": 1.67,
      "shares_held": 3648000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 1,
      "name": "横浜ゴム株式会社",
      "shareholding_ratio": 10.38,
      "shares_held": 22682000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "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": 5,
      "shares_held": 10922000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "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）",
      "shareholding_ratio": 4.49,
      "shares_held": 9806000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 4,
      "name": "株式会社みずほ銀行 （常任代理人 資産管理サービス信託銀行株式会社）",
      "shareholding_ratio": 4.39,
      "shares_held": 9600000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 5,
      "name": "全国共済農業協同組合連合会 (常任代理人 日本マスタートラスト信託銀行株式会社）",
      "shareholding_ratio": 3.52,
      "shares_held": 7700000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 6,
      "name": "朝日生命保険相互会社 （常任代理人 資産管理サービス信託銀行株式会社）",
      "shareholding_ratio": 3.51,
      "shares_held": 7679000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 7,
      "name": "旭化成株式会社",
      "shareholding_ratio": 2.95,
      "shares_held": 6438000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 8,
      "name": "ＢＮＹ ＧＣＭ ＣＬＩＥＮＴ ＡＣＣＯＵＮＴ ＪＰＲＤ ＡＣ Ｉ ＳＧ （ＦＥ－ＡＣ） （常任代理人 株式会社三菱ＵＦＪ銀行）",
      "shareholding_ratio": 2.71,
      "shares_held": 5921000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 9,
      "name": "農林中央金庫",
      "shareholding_ratio": 1.83,
      "shares_held": 4000000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 10,
      "name": "日本ゼオン取引先持株会",
      "shareholding_ratio": 1.73,
      "shares_held": 3783000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 1,
      "name": "横浜ゴム株式会社",
      "shareholding_ratio": 10.37,
      "shares_held": 22682000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "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": 5.99,
      "shares_held": 13105000
    },
    {
      "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": 5.07,
      "shares_held": 11089000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 4,
      "name": "株式会社みずほ銀行 （常任代理人 株式会社日本カストディ銀行）",
      "shareholding_ratio": 4.39,
      "shares_held": 9600000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 5,
      "name": "朝日生命保険相互会社 （常任代理人 株式会社日本カストディ銀行）",
      "shareholding_ratio": 3.51,
      "shares_held": 7679000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 6,
      "name": "旭化成株式会社",
      "shareholding_ratio": 2.94,
      "shares_held": 6438000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 7,
      "name": "全国共済農業協同組合連合会 （常任代理人 日本マスタートラスト信託銀行株式会社）",
      "shareholding_ratio": 2.59,
      "shares_held": 5675000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 8,
      "name": "農林中央金庫",
      "shareholding_ratio": 1.83,
      "shares_held": 4000000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 9,
      "name": "ＳＴＡＴＥ ＳＴＲＥＥＴ ＢＡＮＫ ＡＮＤ ＴＲＵＳＴ ＣＯＭＰＡＮＹ ５０５００１ （常任代理人 株式会社みずほ銀行）",
      "shareholding_ratio": 1.77,
      "shares_held": 3881000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 10,
      "name": "日本ゼオン取引先持株会",
      "shareholding_ratio": 1.72,
      "shares_held": 3770000
    },
    {
      "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": 12.82,
      "shares_held": 27456000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 2,
      "name": "横浜ゴム株式会社",
      "shareholding_ratio": 10.59,
      "shares_held": 22682000
    },
    {
      "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": 6.47,
      "shares_held": 13862000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 4,
      "name": "株式会社みずほ銀行 （常任代理人 株式会社日本カストディ銀行）",
      "shareholding_ratio": 4.48,
      "shares_held": 9600000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 5,
      "name": "朝日生命保険相互会社 （常任代理人 株式会社日本カストディ銀行）",
      "shareholding_ratio": 3.58,
      "shares_held": 7679000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 6,
      "name": "旭化成株式会社",
      "shareholding_ratio": 2.85,
      "shares_held": 6116000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 7,
      "name": "全国共済農業協同組合連合会 （常任代理人 日本マスタートラスト信託銀行株式会社）",
      "shareholding_ratio": 2.22,
      "shares_held": 4765000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 8,
      "name": "農林中央金庫",
      "shareholding_ratio": 1.87,
      "shares_held": 4000000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 9,
      "name": "日本ゼオン取引先持株会",
      "shareholding_ratio": 1.75,
      "shares_held": 3753000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 10,
      "name": "ＳＴＡＴＥ ＳＴＲＥＥＴ ＢＡＮＫ ＡＮＤ ＴＲＵＳＴ ＣＯＭＰＡＮＹ ５０５００１ （常任代理人 株式会社みずほ銀行）",
      "shareholding_ratio": 1.73,
      "shares_held": 3700000
    },
    {
      "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": 10.85,
      "shares_held": 22923000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 2,
      "name": "横浜ゴム株式会社",
      "shareholding_ratio": 8.88,
      "shares_held": 18757000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 3,
      "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": 7.25,
      "shares_held": 15325000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 4,
      "name": "株式会社日本カストディ銀行（信託口）",
      "shareholding_ratio": 5.58,
      "shares_held": 11796000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 5,
      "name": "株式会社みずほ銀行 （常任代理人 株式会社日本カストディ銀行）",
      "shareholding_ratio": 4.54,
      "shares_held": 9600000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 6,
      "name": "朝日生命保険相互会社 （常任代理人 株式会社日本カストディ銀行）",
      "shareholding_ratio": 3.63,
      "shares_held": 7679000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 7,
      "name": "旭化成株式会社",
      "shareholding_ratio": 2.64,
      "shares_held": 5579000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 8,
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