THREE is a new kind of insurance product, but we're not exactly new to the insurance business. We're part of the Berkshire Hathaway group of insurance companies, one of the largest insurance groups in the world. Berkshire Hathaway has been in the insurance business since 1967 when it purchased National Indemnity Company (which was founded in 1940). Your THREE policy is supported by a 90% quota share reinsurance agreement from National Indemnity Company, the largest property/casualty company in the world as measured by net worth.