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AMI Insurance began in Christchurch, New Zealand, in 1926 as the South Island Motor Union (SIMU), and grew to be the second biggest residential insurer in New Zealand. It was, before the buy-out from IAG New Zealand Ltd, a Mutual insurance company, meaning it was owned by its policy holders.

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Combined Insurance is a global provider of supplemental insurance, including accident insurance, life insurance and critical care coverage. Combined Insurance operates in North America, Latin America, Europe and the Pacific. The company is headquartered in Chicago, Illinois.

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FMG Insurance is a mutual insurance company in New Zealand that was established from a merger of the Farmers' Mutual Insurance Association, Taranaki Farmers' Mutual Insurance Association and Primary Industries Insurance Company Limited in 1978. The company is incorporated under the Farmers’ Mutual Group Act 2007 and can trace its origins back to the original farmer's fire mutual organisations established in 1905.

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IAG New Zealand is an insurance company based in New Zealand, and is a subsidiary of Insurance Australia Group. The head office is in Auckland, New Zealand. The company also has several offices throughout the country.

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NZI or New Zealand Insurance is a major insurance company in New Zealand. NZI was formed in Auckland by 1859 as the New Zealand Insurance Company and is one of New Zealand's largest and longest-serving fire and general insurance brands.

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The Promina Group, an Australian and New Zealand insurance company (2003–07), formerly had listing on the Australian and New Zealand stock-exchanges. Suncorp-Metway Limited took over full ownership of the group in 2007.

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State Insurance is an insurance company based in New Zealand. As of 2011, "State" serves as a business division of IAG New Zealand Limited, a subsidiary of Insurance Australia Group.

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Tower is a New Zealand-based insurance company which provides fire and general insurance.

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Vero Insurance is an Australian insurance company. Founded in 2003, it is one of the largest insurance companies in Australia.