Allstate

Allstate posts $57B in revenue, ranking as the largest publicly traded US P&C insurer. Based in Northbrook, IL, and known as "You're in good hands" since 1931, it covers 16M+ households with auto, home, and commercial policies. Its combined ratio of 93.5% in 2023 outperformed Berkshire Hathaway's P&C segment by 2.3 points, driving strong returns.