Which insurance companies does Berkshire Hathaway own?

Which insurance companies does Berkshire Hathaway own?

Among the insurance companies Berkshire Hathaway owns are Berkshire Hathaway GUARD Insurance Companies, Berkshire Hathaway Specialty Insurance, Gateway Underwriters Agency, GEICO, General RE, MedPro Group, National Indemnity Company, and United States Liability Insurance Group.

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