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  "domain": "insurance",
  "title": "Japan non-life big-three reinsurance and cat overlay matrix",
  "entry_type": "wiki_entry",
  "frontmatter": {
    "title": "Japan non-life big-three reinsurance and cat overlay matrix",
    "aliases": [
      "japan-nonlife-big-three-reinsurance-cat-matrix",
      "Japan non-life big three cat matrix",
      "Tokio Marine MSAD Sompo reinsurance overlay",
      "Japan P&C big three cat overlay",
      "Japan non-life cat reinsurance comparison",
      "日本 損保 big three 再保険 比較",
      "Japan non-life big three combined ratio matrix",
      "Japan non-life big three ESR sensitivity"
    ],
    "domain": "insurance",
    "type": null,
    "created": "2026-05-25",
    "last_updated": "2026-07-30",
    "last_tended": "2026-07-30",
    "review_by": "2026-11-25",
    "confidence": "likely",
    "tags": [
      "insurance",
      "matrix",
      "non-life",
      "esr",
      "reinsurance",
      "japan",
      "catastrophe",
      "P&C"
    ],
    "status": "active",
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    "related": [],
    "note": null,
    "sources": [
      "https://www.fsa.go.jp/policy/economic_value-based_solvency/index.html",
      "https://www.iaisweb.org/activities-topics/insurance-capital-standard",
      "https://www.sonpo.or.jp/about/gaiyo/",
      "https://www.tokiomarinehd.com/en/ir/download/annual_report.html",
      "https://www.ms-ad-hd.com/en/ir/library/disclosure.html",
      "https://www.sompo-hd.com/en/ir/data/annual/"
    ]
  },
  "summary": "The \"Japan non-life big three\" — Tokio Marine Holdings, MS&AD Insurance Group Holdings, and Sompo Holdings — share a Japan-domiciled, multi-line P&C franchise but differ on five overlay axes that drive the analytical readings: catastrophe exposure by peril, reinsurance-program shape, overseas specia",
  "headings": [
    "Japan non-life big-three reinsurance and cat overlay matrix",
    "TL;DR",
    "Wiki route",
    "Why this matrix matters",
    "Tokio Marine Holdings — overseas-led specialty franchise",
    "MS&AD Insurance Group Holdings — dual-domestic and mobility-tilted",
    "Sompo Holdings — domestic-core with overseas specialty",
    "Cat-peril, reinsurance, and overseas overlay",
    "Combined-ratio and ESR sensitivity decomposition",
    "Big comparison matrix table"
  ],
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