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.

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Quick Facts Native name, Company type ...

Mitsui Sumitomo Insurance Group Holdings, Inc.

Native name	三井住友海上グループホールディングス株式会社
Company type	Public (K.K)
Traded as	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	JP¥ 2,137,603 million (FY 2007)
Net income	JP¥ 40,027 million (FY 2007)
Number of employees	20,237 (2008)
Subsidiaries	Ceylinco Insurance (15%)[1]
Website	ms-ad-hd.com/en

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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]

• MSIG Annual Report 2008
• MSIG Annual Report 2014