{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "8725",
  "company_name": "MS&ADインシュアランスグループホールディングス",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/8725/",
  "api_url": "/api/8725/decisions.json",
  "updated": "2026-08-05",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/8725/",
  "count": 3,
  "description": "Index of this company's management decisions. One decision = one endpoint: follow api_url for the full dossier (background, the decision itself, outcome, quoted primary sources and references).",
  "decisions": [
    {
      "slug": "msad-integration-2009",
      "url": "/tse/8725/decisions/msad-integration-2009/",
      "api_url": "/api/8725/decisions/msad-integration-2009.json",
      "year": 2009,
      "month": 1,
      "type": "reorganization",
      "tags": [
        "ma-merger",
        "cp-holdings"
      ],
      "title": "三井住友海上・あいおい・ニッセイ同和の3社統合とMS&ADインシュアランスグループの結成",
      "subtitle": "東京海上・損保ジャパンの統合が進むなか、財閥系・トヨタ系・日本生命系という異質な3損保を、なぜ一つの持株会社へ束ねたか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "amlin-acquisition-2015",
      "url": "/tse/8725/decisions/amlin-acquisition-2015/",
      "api_url": "/api/8725/decisions/amlin-acquisition-2015.json",
      "year": 2015,
      "month": 9,
      "type": "acquisition",
      "tags": [
        "ma-crossborder-out",
        "gl-entry"
      ],
      "title": "英アムリン買収によるロイズ市場への本格参入",
      "subtitle": "国内損保が成熟するなか、MS&ADは約6,420億円でロイズ第2位のアムリンをどう取りに行ったか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "ms-aioi-merger-2025",
      "url": "/tse/8725/decisions/ms-aioi-merger-2025/",
      "api_url": "/api/8725/decisions/ms-aioi-merger-2025.json",
      "year": 2025,
      "month": 3,
      "type": "merger",
      "tags": [
        "ma-merger"
      ],
      "title": "三井住友海上とあいおいニッセイ同和損保の合併発表とMS&AD損保2社統合（2025年）",
      "subtitle": "なぜMS&ADは15年併存させた中核損保2社を、いま一つに束ね直すのか？",
      "status": "agreed",
      "status_label": "合併発表"
    }
  ],
  "by_type": [
    {
      "key": "acquisition",
      "count": 1,
      "url": "/api/8725/decisions/by-type/acquisition.json"
    },
    {
      "key": "merger",
      "count": 1,
      "url": "/api/8725/decisions/by-type/merger.json"
    },
    {
      "key": "reorganization",
      "count": 1,
      "url": "/api/8725/decisions/by-type/reorganization.json"
    }
  ],
  "by_decade": [
    {
      "key": "2000s",
      "count": 1,
      "url": "/api/8725/decisions/by-decade/2000s.json"
    },
    {
      "key": "2010s",
      "count": 1,
      "url": "/api/8725/decisions/by-decade/2010s.json"
    },
    {
      "key": "2020s",
      "count": 1,
      "url": "/api/8725/decisions/by-decade/2020s.json"
    }
  ]
}