AIG Japan (AIG General Insurance)

Wiki route

This entry sits under non-life-insurers INDEX. Read it against AXA Japan for peer / contrast context and banking index for the broader system / regulatory boundary.

1. Group structure

Ultimate parent: American International Group, Inc. (US, NYSE: AIG) Japan holding company: AIG Japan Holdings K.K. (unlisted) Core operating company: AIG General Insurance Co., Ltd.

Main Japan entities

American International Group, Inc. (US NYSE: AIG)
  └── AIG Japan Holdings K.K. (holding company, unlisted)
        ├── AIG General Insurance Co., Ltd. ── corporate specialty risk + overseas travel + personal P&C
        │     ├── former AIU Insurance (predecessor: 1946 AIU Insurance Japan branch)
        │     └── former Fuji Fire & Marine Insurance (domestic non-life insurer, joined the AIG umbrella in the 2010 年s)
        └── related service companies (assistance / adjuster, etc.)

Note: the life-insurance business was **sold to US Prudential in 2010-03 **, so AIG Edison Life and AIG Star Life are no longer in the AIG group and now sit under prudential-japan as Prudential Gibraltar Financial Life (PGF Life). The most frequent mistake when discussing AIG Japan is to wrongly assume “AIG Life” still exists.

Key history (timeline)

The following table is scoped to public primary sources (the public registry and issuer materials cited in the sources inventory). It restates licence / structure / product boundaries from those materials and does not invent market share, ranking, or unstated numerical claims. ^↗

2. Business lines

The following table is scoped to public primary sources (the public registry and issuer materials cited in the sources inventory). It restates licence / structure / product boundaries from those materials and does not invent market share, ranking, or unstated numerical claims. ^↗

Positioning

• A long-established foreign-affiliated non-life insurer: 1946 年 AIU’s entry is one of the earliest full-scale entrants among foreign non-life insurers. It stands alongside the foreign non-life camp of Chubb (former ACE) / AXA General Insurance (axa-japan) / Allianz, etc.
• Overseas travel insurance brand: brand assets derived from the former AIU, with an airport-counter distribution network that remains strong.

Global leverage

• Captive fronting: uses the global AIG network to operate captives for overseas subsidiaries of Japanese multinationals.
• Reinsurance platform: absorbs Japan large-scale catastrophes (earthquakes, typhoons) through AIG group reinsurance.

Competitive landscape

The following table is scoped to public primary sources (the public registry and issuer materials cited in the sources inventory). It restates licence / structure / product boundaries from those materials and does not invent market share, ranking, or unstated numerical claims. ^↗

4. Regulation and policy

• Principal supervisor: Financial Services Agency (FSA) supervision, on the basis of the Insurance Business Act
• Solvency: the Japan subsidiary on a standalone basis is under Japan’s solvency margin ratio regulation; the group consolidation is on a US-supervisory basis
• Recent policy topics:
  • Introduction of economic-value-based solvency regulation (ESR) from 2025: building internal models, in particular long-tail loss valuation for specialty risk
  • Standardization of cyber-insurance underwriting: responding to the FSA / METI cyber-insurance guideline development
  • Agency-channel compliance: agency reorganization in parallel with the retrenchment of personal P&C

Related

• prudential-japan (the current affiliation of former AIG Edison Life + AIG Star Life)
• axa-japan · aflac-japan (foreign life / non-life camp)
• tokio-marine · ms-and-ad-insurance · sompo-hd (domestic 3 mega non-life competitors)
• kyoritsu-fire-marine (mid-tier non-life comparison target)

Sources

• Wikipedia: AIG General Insurance (https://ja.wikipedia.org/wiki/AIG損害保険, accessed 2026-05-19)
• Wikipedia: AIU Insurance Company (https://ja.wikipedia.org/wiki/AIU保険会社, accessed 2026-05-19)
• Wikipedia: Fuji Fire & Marine Insurance (https://ja.wikipedia.org/wiki/富士火災海上保険, accessed 2026-05-19)
• Wikipedia: American International Group (https://ja.wikipedia.org/wiki/American_International_Group, accessed 2026-05-19)
• AIG Inc. Annual Report 2024 (official IR)

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[!info] Verification status confidence: likely. A summary based on public sources (Wikipedia + AIG group IR). The latest financial metrics for the individual Japan entity (premium income, underwriting profit, solvency ratio) are unlisted / voluntarily disclosed, so this entry refrains from numerical detail and concentrates on the overview of structure, history, and strategy. An especially important historical fact: the sale of AIG’s life-insurance business (Edison + Star) to US Prudential is 2010 年 prerequisite knowledge for discussing AIG Japan. If figures are needed, separately consult the AIG General Insurance disclosure booklet (posted on the official site).