In 2024, UnitedHealth once again topped the rankings with the highest revenue and absolute profit. But the real profitability winners were Progressive and AIG, which turned leaner operations into industry-leading margins of more than 14%. For others, the story was different: Cigna and Centene eked out margins of barely 2%, despite sitting among the top 10 by size.
The numbers, drawn from Insurance Business’ Top US Insurance Companies by Market Cap dashboard, reveal a widening gap between scale and efficiency. The median profit margin, which sank to 3.9% in 2023, rebounded last year to 6.3% - still shy of its 2021 peak. And expenses have been growing faster than revenue across the group, raising questions about whether size is buying growth or simply higher costs.
For actuaries and finance teams, the implications are direct. Larger revenue bases are not consistently translating into stronger margins. Health insurers wrestle with higher medical costs and utilization, while P&C carriers confront auto severity and catastrophe losses. Across the board, expense creep threatens to undercut pricing discipline just as the market hardens.
The underlying report offers a profitability map of the top carriers - who’s earning the most, who’s most efficient, and how the gap between the two is widening. For insurers, investors, and regulators, the lessons could shape the next three years of planning.
