{
  "spec_version": "3",
  "endpoint": "shareholders",
  "stock_code": "5481",
  "company_name": "山陽特殊製鋼",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/5481/shareholders/",
  "api_url": "/api/5481/shareholders.json",
  "updated": "2026-08-29",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/5481/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": "FY16",
      "period": "2017/3",
      "rank": 1,
      "name": "新日鐵住金株式会社",
      "shareholding_ratio": 14.51,
      "shares_held": 24256000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 2,
      "name": "山陽特殊製鋼共栄会",
      "shareholding_ratio": 6.35,
      "shares_held": 10620000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 3,
      "name": "日本精工株式会社",
      "shareholding_ratio": 4.47,
      "shares_held": 7470000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "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)",
      "shareholding_ratio": 4.27,
      "shares_held": 7128000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 5,
      "name": "日本マスタートラスト信託銀行株式会社(信託口)",
      "shareholding_ratio": 4.09,
      "shares_held": 6829000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 6,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 3.41,
      "shares_held": 5696000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 7,
      "name": "株式会社みずほ銀行",
      "shareholding_ratio": 2.18,
      "shares_held": 3642000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 8,
      "name": "GOVERNMENT OF NORWAY（常任代理人 シティバンク、エヌ・エイ）",
      "shareholding_ratio": 2.06,
      "shares_held": 3445000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 9,
      "name": "伊藤忠丸紅鉄鋼株式会社",
      "shareholding_ratio": 1.86,
      "shares_held": 3108000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 10,
      "name": "DFA INTL SMALL CAP VALUEPORTFOLIO（常任代理人 シティバンク、エヌ・エイ）",
      "shareholding_ratio": 1.71,
      "shares_held": 2864000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 1,
      "name": "新日鐵住金株式会社",
      "shareholding_ratio": 15.06,
      "shares_held": 4851000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 2,
      "name": "山陽特殊製鋼共栄会",
      "shareholding_ratio": 6.92,
      "shares_held": 2228000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 3,
      "name": "日本精工株式会社",
      "shareholding_ratio": 4.64,
      "shares_held": 1494000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 4,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 3.54,
      "shares_held": 1139000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "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)",
      "shareholding_ratio": 2.84,
      "shares_held": 914000
    },
    {
      "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": 2.63,
      "shares_held": 846000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 7,
      "name": "株式会社みずほ銀行",
      "shareholding_ratio": 2.26,
      "shares_held": 728000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 8,
      "name": "NORTHERN TRUST CO.(AVFC) RE-HCR00（常任代理人 香港上海銀行東京支店）",
      "shareholding_ratio": 2.08,
      "shares_held": 668000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 9,
      "name": "伊藤忠丸紅鉄鋼株式会社",
      "shareholding_ratio": 1.93,
      "shares_held": 621000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 10,
      "name": "DFA INTL SMALL CAP VALUEPORTFOLIO（常任代理人 シティバンク、エヌ・エイ東京支店）",
      "shareholding_ratio": 1.89,
      "shares_held": 608000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 1,
      "name": "新日鐵住金株式会社",
      "shareholding_ratio": 51.34,
      "shares_held": 28863000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 2,
      "name": "山陽特殊製鋼共栄会",
      "shareholding_ratio": 4.12,
      "shares_held": 2319000
    },
    {
      "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": 2.81,
      "shares_held": 1579000
    },
    {
      "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": 2.62,
      "shares_held": 1473000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 5,
      "name": "日本精工株式会社",
      "shareholding_ratio": 2.61,
      "shares_held": 1467000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 6,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 2.03,
      "shares_held": 1139000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 7,
      "name": "株式会社みずほ銀行",
      "shareholding_ratio": 1.3,
      "shares_held": 728000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 8,
      "name": "NORTHERN TRUST CO.(AVFC) RE-HCR00（常任代理人 香港上海銀行東京支店）",
      "shareholding_ratio": 1.29,
      "shares_held": 725000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 9,
      "name": "伊藤忠丸紅鉄鋼株式会社",
      "shareholding_ratio": 1.11,
      "shares_held": 621000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 10,
      "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": 1.09,
      "shares_held": 610000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 1,
      "name": "日本製鉄株式会社",
      "shareholding_ratio": 52.97,
      "shares_held": 28863000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 2,
      "name": "山陽特殊製鋼共栄会",
      "shareholding_ratio": 4.44,
      "shares_held": 2418000
    },
    {
      "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": 2.31,
      "shares_held": 1258000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "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": 2.21,
      "shares_held": 1206000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 5,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 2.09,
      "shares_held": 1139000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 6,
      "name": "NORTHERN TRUST CO.(AVFC) RE-HCR00（常任代理人 香港上海銀行東京支店）",
      "shareholding_ratio": 1.72,
      "shares_held": 935000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 7,
      "name": "日本精工株式会社",
      "shareholding_ratio": 1.42,
      "shares_held": 772000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 8,
      "name": "株式会社みずほ銀行",
      "shareholding_ratio": 1.34,
      "shares_held": 728000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 9,
      "name": "山陽特殊製鋼従業員持株会",
      "shareholding_ratio": 1.24,
      "shares_held": 674000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 10,
      "name": "伊藤忠丸紅鉄鋼株式会社",
      "shareholding_ratio": 1.14,
      "shares_held": 621000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 1,
      "name": "日本製鉄株式会社",
      "shareholding_ratio": 52.97,
      "shares_held": 28863000
    },
    {
      "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": 5.55,
      "shares_held": 3024000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 3,
      "name": "山陽特殊製鋼共栄会",
      "shareholding_ratio": 4.56,
      "shares_held": 2488000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "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": 3.6,
      "shares_held": 1964000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 5,
      "name": "山陽特殊製鋼従業員持株会",
      "shareholding_ratio": 1.44,
      "shares_held": 784000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 6,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 1.17,
      "shares_held": 639000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 7,
      "name": "伊藤忠丸紅鉄鋼株式会社",
      "shareholding_ratio": 1.14,
      "shares_held": 621000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 8,
      "name": "株式会社三菱ＵＦＪ銀行",
      "shareholding_ratio": 1.04,
      "shares_held": 569000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 9,
      "name": "三井住友信託銀行株式会社",
      "shareholding_ratio": 1.03,
      "shares_held": 566000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 10,
      "name": "第一生命保険株式会社",
      "shareholding_ratio": 0.89,
      "shares_held": 487000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 1,
      "name": "日本製鉄株式会社",
      "shareholding_ratio": 52.97,
      "shares_held": 28863000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 2,
      "name": "株式会社日本カストディ銀行(信託口)",
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      "shares_held": 3399000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "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": 6.23,
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    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 4,
      "name": "山陽特殊製鋼共栄会",
      "shareholding_ratio": 4.76,
      "shares_held": 2597000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 5,
      "name": "山陽特殊製鋼従業員持株会",
      "shareholding_ratio": 1.47,
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    },
    {
      "FY": "FY21",
      "period": "2022/3",
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      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 1.17,
      "shares_held": 639000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 7,
      "name": "伊藤忠丸紅鉄鋼株式会社",
      "shareholding_ratio": 1.14,
      "shares_held": 621000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 8,
      "name": "株式会社三菱ＵＦＪ銀行",
      "shareholding_ratio": 1.04,
      "shares_held": 569000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 9,
      "name": "三井住友信託銀行株式会社",
      "shareholding_ratio": 1.03,
      "shares_held": 566000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 10,
      "name": "J.P.MORGAN SECURETIES PLC FOR AND ON BEHALF OF ITS CLIENTS JPMSP RE CLIENT ASSETS-SETT ACCT",
      "shareholding_ratio": 0.9,
      "shares_held": 492000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 1,
      "name": "日本製鉄株式会社",
      "shareholding_ratio": 52.98,
      "shares_held": 28863000
    },
    {
      "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": 6.93,
      "shares_held": 3775000
    },
    {
      "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": 5.93,
      "shares_held": 3229000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 4,
      "name": "山陽特殊製鋼共栄会",
      "shareholding_ratio": 4.93,
      "shares_held": 2688000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 5,
      "name": "山陽特殊製鋼従業員持株会",
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    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 6,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 1.17,
      "shares_held": 639000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 7,
      "name": "伊藤忠丸紅鉄鋼株式会社",
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    },
    {
      "FY": "FY22",
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      "rank": 8,
      "name": "株式会社三菱ＵＦＪ銀行",
      "shareholding_ratio": 1.05,
      "shares_held": 569000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 9,
      "name": "DFA INTL SMALL CAP VALUEPORTFOLIO（常任代理人シティバンク、エヌ・エイ東京支店）",
      "shareholding_ratio": 0.96,
      "shares_held": 525000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 10,
      "name": "三井住友信託銀行株式会社",
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      "shares_held": 483000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 1,
      "name": "日本製鉄株式会社",
      "shareholding_ratio": 52.98,
      "shares_held": 28863000
    },
    {
      "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": 7.17,
      "shares_held": 3908000
    },
    {
      "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": 6.07,
      "shares_held": 3306000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 4,
      "name": "山陽特殊製鋼共栄会",
      "shareholding_ratio": 5.09,
      "shares_held": 2771000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 5,
      "name": "山陽特殊製鋼従業員持株会",
      "shareholding_ratio": 1.43,
      "shares_held": 777000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 6,
      "name": "伊藤忠丸紅鉄鋼株式会社",
      "shareholding_ratio": 1.14,
      "shares_held": 621000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 7,
      "name": "野村信託銀行株式会社(投信口)",
      "shareholding_ratio": 0.95,
      "shares_held": 516000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 8,
      "name": "DFA INTL SMALL CAP VALUEPORTFOLIO（常任代理人シティバンク、エヌ・エイ東京支店）",
      "shareholding_ratio": 0.91,
      "shares_held": 498000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 9,
      "name": "株式会社三井住友銀行",
      "shareholding_ratio": 0.88,
      "shares_held": 479000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 10,
      "name": "株式会社三菱ＵＦＪ銀行",
      "shareholding_ratio": 0.78,
      "shares_held": 427000
    }
  ],
  "categories": [
    {
      "FY": "FY16",
      "period": "2017/3",
      "category_key": "government",
      "category": "政府・地方公共団体",
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    },
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      "category": "金融機関",
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      "shares_units": 47301,
      "ratio": 28.43
    },
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      "FY": "FY16",
      "period": "2017/3",
      "category_key": "financial_service",
      "category": "金融商品取引業者",
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      "shares_units": 1944,
      "ratio": 1.17
    },
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      "FY": "FY16",
      "period": "2017/3",
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      "category": "その他の法人",
      "shareholders": 216,
      "shares_units": 50080,
      "ratio": 30.11
    },
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    },
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      "FY": "FY16",
      "period": "2017/3",
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      "category": "外国法人等（個人）",
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    },
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