Mercury General is a property and casualty insurance holding company that operates multiple insurance subsidiaries specializing in personal automobile insurance, which represents the majority of its premium volume. The company serves individual policyholders across multiple states, primarily in California, offering personal auto insurance alongside complementary products including homeowners, commercial property, and umbrella coverage. Mercury General generates revenue through net premiums earned on its insurance policies, investment income from a substantial portfolio of fixed-income and equity securities, and reinsurance cost recovery mechanisms, with profitability driven by rate approvals, policy growth, and favorable claims experience.