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Native name  | 三井住友海上グループホールディングス株式会社 | 
|---|---|
| Type | Public (K.K) | 
| TYO: 8725 | |
| Industry | Insurance | 
| Founded | October 21, 1918 (as Taishō Marine and Fire Insurance Co.)  October 2001 (merger of Mitsui Marine & Fire Insurance Co. and The Sumitomo Marine & Fire Insurance)  | 
| Fate | Merged | 
| Successor | MS&AD Insurance Group | 
| Headquarters | Tokyo, Japan | 
Area served  | Worldwide | 
Key people  | Yoshiaki Shin, Chairman Toshiaki Egashira, President  | 
| Revenue | |
Number of employees  | 20,237 (2008) | 
| Subsidiaries | Ceylinco Insurance (15%)[1] | 
| Website | ms-ad-hd | 

Mitsui Sumitomo Insurance Group Holdings, Inc. (三井住友海上グループホールディングス株式会社, Mitsui Sumitomo Kaijō Gurūpu Hōrudingusu Kabushiki-Kaisha) is a Japanese insurance holding company headquartered in Tokyo, Japan.
MSIG was formed in 2001 from the merger of Mitsui Marine & Fire Insurance Co. (itself descended from the Taishō Marine and Fire Insurance Co. founded in 1918) and The Sumitomo Marine & Fire Insurance. In 2010, April Aioi Insurance Co., Ltd., Nissay Dowa General Insurance Co., Ltd., merged into MSIG, making the group's name changed in to MS&AD Insurance Group Holdings, Inc.. According to this business integration, MS&AD has become the largest property insurance company in Japan, with market share of 33% in 2013.[2]
On 8 September 2015, it was announced that Mitsui Sumitomo had agreed to buy the UK insurance firm Amlin for £3.5bn.[3]
Group companies
Non-life insurance
Life insurance
- Mitsui Sumitomo Kirameki Life Insurance Co., Ltd.
 - Mitsui Sumitomo MetLife insurance Co., Ltd.
 
Companies not based in Japan
- Amlin, plc
 - Cholamandalam MS General Insurance
 - MSIG Insurance Europe AG
 - MSIG Insurance Vietnam Company Limited
 - MS Frontier Reinsurance Ltd.
 - Mitsui Sumitomo Reinsurance Ltd.
 - Mitsui Sumitomo Insurance London Management Ltd.
 - MSI GuaranteedWeather, LLC
 - part, llc
 - Mitsui Sumitomo Insurance – Oceania
 
Financial services
- Sumitomo Mitsui Asset Management Co., Ltd.
 - MITSUI SUMITOMO INSURANCE Venture Capital Co., Ltd.
 
Risk-related businesses
- InterRisk Research Institute & Consulting, Inc.
 - MITSUI SUMITOMO INSURANCE Care Network Co., Ltd.
 - American Appraisal Japan Co., Ltd.
 
Annual Reports
References
- ↑ "Ceylinco Insurance Annual Report 2019" (PDF). www.cdn.cse.lk. Colombo Stock Exchange. Retrieved March 2, 2020.
 - ↑ MS&AD Insurance Inc. . 2013.
 - ↑ "Mitsui Sumitomo to buy insurer Amlin for £3.5bn". FT. 8 September 2015. Retrieved 1 October 2015.
 

