{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "3391",
  "company_name": "ツルハホールディングス",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/3391/",
  "api_url": "/api/3391/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/3391/",
  "count": 4,
  "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": "federated-ma-nationwide-2010s",
      "url": "/tse/3391/decisions/federated-ma-nationwide-2010s/",
      "api_url": "/api/3391/decisions/federated-ma-nationwide-2010s.json",
      "year": 2007,
      "month": 5,
      "type": "acquisition",
      "tags": [
        "ma-rollup"
      ],
      "title": "連邦型M&Aによる全国チェーン化 ── くすりの福太郎からドラッグイレブンまで",
      "subtitle": "北海道で寡占を築いた地方チェーンは、なぜ買収した会社の屋号を残したまま全国へ広げたのか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "president-transition-pb-pivot-2020",
      "url": "/tse/3391/decisions/president-transition-pb-pivot-2020/",
      "api_url": "/api/3391/decisions/president-transition-pb-pivot-2020.json",
      "year": 2020,
      "month": 6,
      "type": "governance",
      "tags": [
        "gv-succession",
        "gv-family",
        "st-brand"
      ],
      "title": "連邦型の「放任」からグループシナジーへ、鶴羽順社長の方針転換",
      "subtitle": "買収先の裁量を尊んで全国へ広げた連邦型を、創業家出身の鶴羽順社長はなぜ「放任」と呼んで手を入れたか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "tsuruha-welcia-2025",
      "url": "/tse/3391/decisions/tsuruha-welcia-2025/",
      "api_url": "/api/3391/decisions/tsuruha-welcia-2025.json",
      "year": 2025,
      "month": 4,
      "type": "merger",
      "tags": [
        "ma-merger",
        "cp-holdings"
      ],
      "title": "ツルハホールディングスとウエルシアホールディングスの経営統合（2025年・イオン主導）",
      "subtitle": "なぜイオンは2社を束ね、国内最大のドラッグストア連合はどのように生まれようとしているのか？",
      "status": "agreed",
      "status_label": "成立予定"
    },
    {
      "slug": "welcia-integration-aeon-2025",
      "url": "/tse/3391/decisions/welcia-integration-aeon-2025/",
      "api_url": "/api/3391/decisions/welcia-integration-aeon-2025.json",
      "year": 2025,
      "month": null,
      "type": "alliance",
      "tags": [
        "ma-merger",
        "cp-delisting"
      ],
      "title": "ウエルシア統合とイオンによる子会社化",
      "subtitle": "統合の主体でありながらイオンの子会社になる——2兆円の首位連合を築く選択と、支配権の移転",
      "status": "implemented",
      "status_label": "実施"
    }
  ],
  "by_type": [
    {
      "key": "acquisition",
      "count": 1,
      "url": "/api/3391/decisions/by-type/acquisition.json"
    },
    {
      "key": "alliance",
      "count": 1,
      "url": "/api/3391/decisions/by-type/alliance.json"
    },
    {
      "key": "governance",
      "count": 1,
      "url": "/api/3391/decisions/by-type/governance.json"
    },
    {
      "key": "merger",
      "count": 1,
      "url": "/api/3391/decisions/by-type/merger.json"
    }
  ],
  "by_decade": [
    {
      "key": "2000s",
      "count": 1,
      "url": "/api/3391/decisions/by-decade/2000s.json"
    },
    {
      "key": "2020s",
      "count": 3,
      "url": "/api/3391/decisions/by-decade/2020s.json"
    }
  ]
}