{
  "spec_version": "3",
  "endpoint": "shareholders",
  "stock_code": "2331",
  "company_name": "ALSOK",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/2331/shareholders/",
  "api_url": "/api/2331/shareholders.json",
  "updated": "2026-08-13",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/2331/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": "綜合商事㈱",
      "shareholding_ratio": 7.24,
      "shares_held": 7388000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 2,
      "name": "埼玉機器㈱",
      "shareholding_ratio": 5.17,
      "shares_held": 5283000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 3,
      "name": "綜合警備保障従業員持株会",
      "shareholding_ratio": 4.75,
      "shares_held": 4853000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 4,
      "name": "みずほ信託銀行㈱退職給付信託みずほ銀行口再信託受託者資産管理サービス信託銀行㈱",
      "shareholding_ratio": 4.17,
      "shares_held": 4261000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 5,
      "name": "かまくら商事㈱",
      "shareholding_ratio": 4.06,
      "shares_held": 4150000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 6,
      "name": "日本トラスティ・サービス信託銀行㈱（信託口）(注)１",
      "shareholding_ratio": 3.68,
      "shares_held": 3763000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 7,
      "name": "損害保険ジャパン日本興亜㈱",
      "shareholding_ratio": 3.37,
      "shares_held": 3441000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 8,
      "name": "東京海上日動火災保険㈱",
      "shareholding_ratio": 3.35,
      "shares_held": 3420000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 9,
      "name": "村井 温",
      "shareholding_ratio": 2.92,
      "shares_held": 2985000
    },
    {
      "FY": "FY15",
      "period": "2016/3",
      "rank": 10,
      "name": "きずな商事㈱",
      "shareholding_ratio": 2.89,
      "shares_held": 2950000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 1,
      "name": "綜合商事㈱",
      "shareholding_ratio": 7.24,
      "shares_held": 7388000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 2,
      "name": "埼玉機器㈱",
      "shareholding_ratio": 5.17,
      "shares_held": 5283000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 3,
      "name": "綜合警備保障従業員持株会",
      "shareholding_ratio": 4.45,
      "shares_held": 4550000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 4,
      "name": "みずほ信託銀行㈱退職給付信託みずほ銀行口再信託受託者資産管理サービス信託銀行㈱",
      "shareholding_ratio": 4.17,
      "shares_held": 4261000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 5,
      "name": "かまくら商事㈱",
      "shareholding_ratio": 4.06,
      "shares_held": 4150000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 6,
      "name": "日本トラスティ・サービス信託銀行㈱（信託口）(注)１",
      "shareholding_ratio": 3.63,
      "shares_held": 3706000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 7,
      "name": "日本マスタートラスト信託銀行㈱（信託口）(注)１",
      "shareholding_ratio": 3.2,
      "shares_held": 3274000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 8,
      "name": "きずな商事㈱",
      "shareholding_ratio": 2.89,
      "shares_held": 2950000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 9,
      "name": "村井 温",
      "shareholding_ratio": 2.82,
      "shares_held": 2885000
    },
    {
      "FY": "FY16",
      "period": "2017/3",
      "rank": 10,
      "name": "東京海上日動火災保険㈱",
      "shareholding_ratio": 2.79,
      "shares_held": 2850000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 1,
      "name": "綜合商事㈱",
      "shareholding_ratio": 7.29,
      "shares_held": 7388000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 2,
      "name": "埼玉機器㈱",
      "shareholding_ratio": 5.21,
      "shares_held": 5283000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 3,
      "name": "綜合警備保障従業員持株会",
      "shareholding_ratio": 4.21,
      "shares_held": 4269000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 4,
      "name": "みずほ信託銀行㈱退職給付信託みずほ銀行口再信託受託者資産管理サービス信託銀行㈱",
      "shareholding_ratio": 4.2,
      "shares_held": 4261000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 5,
      "name": "かまくら商事㈱",
      "shareholding_ratio": 4.09,
      "shares_held": 4150000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 6,
      "name": "日本マスタートラスト信託銀行㈱（信託口）(注)",
      "shareholding_ratio": 3.69,
      "shares_held": 3739000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 7,
      "name": "日本トラスティ・サービス信託銀行㈱（信託口）(注)",
      "shareholding_ratio": 3.37,
      "shares_held": 3421000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 8,
      "name": "きずな商事㈱",
      "shareholding_ratio": 2.91,
      "shares_held": 2950000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 9,
      "name": "村井 温",
      "shareholding_ratio": 2.84,
      "shares_held": 2885000
    },
    {
      "FY": "FY17",
      "period": "2018/3",
      "rank": 10,
      "name": "㈱SMBC信託銀行（㈱三井住友銀行退職給付信託口）",
      "shareholding_ratio": 2.7,
      "shares_held": 2735000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 1,
      "name": "綜合商事㈱",
      "shareholding_ratio": 7.29,
      "shares_held": 7388000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 2,
      "name": "埼玉機器㈱",
      "shareholding_ratio": 5.21,
      "shares_held": 5283000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 3,
      "name": "日本マスタートラスト信託銀行㈱（信託口）(注)",
      "shareholding_ratio": 4.38,
      "shares_held": 4442000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 4,
      "name": "みずほ信託銀行㈱退職給付信託みずほ銀行口再信託受託者資産管理サービス信託銀行㈱",
      "shareholding_ratio": 4.2,
      "shares_held": 4261000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 5,
      "name": "かまくら商事㈱",
      "shareholding_ratio": 4.09,
      "shares_held": 4150000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 6,
      "name": "綜合警備保障従業員持株会",
      "shareholding_ratio": 4.08,
      "shares_held": 4138000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 7,
      "name": "日本トラスティ・サービス信託銀行㈱（信託口）(注)",
      "shareholding_ratio": 3.49,
      "shares_held": 3542000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 8,
      "name": "STATE STREET BANK AND TRUST COMPANY505223 (常任代理人 ㈱みずほ銀行決済営業部)",
      "shareholding_ratio": 3.07,
      "shares_held": 3110000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 9,
      "name": "きずな商事㈱",
      "shareholding_ratio": 2.91,
      "shares_held": 2950000
    },
    {
      "FY": "FY18",
      "period": "2019/3",
      "rank": 10,
      "name": "村井 温",
      "shareholding_ratio": 2.84,
      "shares_held": 2885000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 1,
      "name": "綜合商事㈱",
      "shareholding_ratio": 7.29,
      "shares_held": 7388000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 2,
      "name": "日本マスタートラスト信託銀行㈱（信託口）(注)",
      "shareholding_ratio": 5.52,
      "shares_held": 5590000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 3,
      "name": "埼玉機器㈱",
      "shareholding_ratio": 5.21,
      "shares_held": 5283000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 4,
      "name": "日本トラスティ・サービス信託銀行㈱（信託口）(注)",
      "shareholding_ratio": 4.96,
      "shares_held": 5029000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 5,
      "name": "みずほ信託銀行㈱退職給付信託みずほ銀行口再信託受託者資産管理サービス信託銀行㈱",
      "shareholding_ratio": 4.2,
      "shares_held": 4261000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 6,
      "name": "かまくら商事㈱",
      "shareholding_ratio": 4.09,
      "shares_held": 4150000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 7,
      "name": "綜合警備保障従業員持株会",
      "shareholding_ratio": 3.8,
      "shares_held": 3853000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 8,
      "name": "きずな商事㈱",
      "shareholding_ratio": 2.91,
      "shares_held": 2950000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 9,
      "name": "村井 温",
      "shareholding_ratio": 2.84,
      "shares_held": 2885000
    },
    {
      "FY": "FY19",
      "period": "2020/3",
      "rank": 10,
      "name": "STATE STREET BANK AND TRUST COMPANY505223 (常任代理人 ㈱みずほ銀行決済営業部)",
      "shareholding_ratio": 2.79,
      "shares_held": 2829000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 1,
      "name": "綜合商事㈱",
      "shareholding_ratio": 7.29,
      "shares_held": 7388000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 2,
      "name": "日本マスタートラスト信託銀行㈱（信託口）(注)",
      "shareholding_ratio": 6.31,
      "shares_held": 6390000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 3,
      "name": "埼玉機器㈱",
      "shareholding_ratio": 5.21,
      "shares_held": 5283000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 4,
      "name": "㈱日本カストディ銀行（信託口）(注)",
      "shareholding_ratio": 5.11,
      "shares_held": 5177000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 5,
      "name": "かまくら商事㈱",
      "shareholding_ratio": 4.09,
      "shares_held": 4150000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 6,
      "name": "綜合警備保障従業員持株会",
      "shareholding_ratio": 3.66,
      "shares_held": 3712000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 7,
      "name": "みずほ信託銀行㈱退職給付信託みずほ銀行口再信託受託者㈱日本カストディ銀行",
      "shareholding_ratio": 2.92,
      "shares_held": 2961000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 8,
      "name": "きずな商事㈱",
      "shareholding_ratio": 2.91,
      "shares_held": 2950000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 9,
      "name": "村井 温",
      "shareholding_ratio": 2.84,
      "shares_held": 2885000
    },
    {
      "FY": "FY20",
      "period": "2021/3",
      "rank": 10,
      "name": "㈱SMBC信託銀行（㈱三井住友銀行退職給付信託口）",
      "shareholding_ratio": 2.7,
      "shares_held": 2735000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行㈱（信託口）(注)",
      "shareholding_ratio": 12.06,
      "shares_held": 12218000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 2,
      "name": "綜合商事㈱",
      "shareholding_ratio": 7.29,
      "shares_held": 7388000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 3,
      "name": "㈱日本カストディ銀行（信託口）(注)",
      "shareholding_ratio": 5.28,
      "shares_held": 5352000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 4,
      "name": "埼玉機器㈱",
      "shareholding_ratio": 5.21,
      "shares_held": 5283000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 5,
      "name": "かまくら商事㈱",
      "shareholding_ratio": 4.09,
      "shares_held": 4150000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 6,
      "name": "綜合警備保障従業員持株会",
      "shareholding_ratio": 3.51,
      "shares_held": 3558000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 7,
      "name": "みずほ信託銀行㈱退職給付信託みずほ銀行口再信託受託者㈱日本カストディ銀行",
      "shareholding_ratio": 2.92,
      "shares_held": 2961000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 8,
      "name": "きずな商事㈱",
      "shareholding_ratio": 2.91,
      "shares_held": 2950000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 9,
      "name": "村井 温",
      "shareholding_ratio": 2.84,
      "shares_held": 2885000
    },
    {
      "FY": "FY21",
      "period": "2022/3",
      "rank": 10,
      "name": "㈱SMBC信託銀行（三井住友信託銀行㈱退職給付信託口）",
      "shareholding_ratio": 2.7,
      "shares_held": 2735000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行㈱（信託口）(注)１",
      "shareholding_ratio": 12.48,
      "shares_held": 12640000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 2,
      "name": "㈱日本カストディ銀行（信託口）(注)１",
      "shareholding_ratio": 7.31,
      "shares_held": 7411000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 3,
      "name": "綜合商事㈱",
      "shareholding_ratio": 7.29,
      "shares_held": 7388000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 4,
      "name": "埼玉機器㈱",
      "shareholding_ratio": 5.21,
      "shares_held": 5283000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 5,
      "name": "かまくら商事㈱",
      "shareholding_ratio": 4.09,
      "shares_held": 4150000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 6,
      "name": "綜合警備保障従業員持株会",
      "shareholding_ratio": 3.49,
      "shares_held": 3541000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 7,
      "name": "みずほ信託銀行㈱退職給付信託みずほ銀行口再信託受託者㈱日本カストディ銀行",
      "shareholding_ratio": 2.92,
      "shares_held": 2961000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 8,
      "name": "きずな商事㈱",
      "shareholding_ratio": 2.91,
      "shares_held": 2950000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 9,
      "name": "村井 温",
      "shareholding_ratio": 2.84,
      "shares_held": 2885000
    },
    {
      "FY": "FY22",
      "period": "2023/3",
      "rank": 10,
      "name": "㈱SMBC信託銀行（㈱三井住友銀行退職給付信託口）",
      "shareholding_ratio": 2.7,
      "shares_held": 2735000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 1,
      "name": "日本マスタートラスト信託銀行㈱（信託口）(注)",
      "shareholding_ratio": 11.1,
      "shares_held": 55630000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 2,
      "name": "綜合商事㈱",
      "shareholding_ratio": 7.37,
      "shares_held": 36943000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 3,
      "name": "㈱日本カストディ銀行（信託口）(注)",
      "shareholding_ratio": 7.2,
      "shares_held": 36098000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 4,
      "name": "埼玉機器㈱",
      "shareholding_ratio": 5.27,
      "shares_held": 26419000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 5,
      "name": "きずな商事㈱",
      "shareholding_ratio": 5.22,
      "shares_held": 26150000
    },
    {
      "FY": "FY23",
      "period": "2024/3",
      "rank": 6,
      "name": "綜合警備保障従業員持株会",
      "shareholding_ratio": 3.46,
      "shares_held": 17332000
    },
    {
      "FY": "FY23",
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}