The data for NU Property & Casualty's annual Top 100 and Heads of the Lines lists are provided by S&P Global Market Intelligence.

Net premiums written reported in the graphic below are based on the National Association of Insurance Commissioners' (NAIC) statutory P&C statement filings filed by U.S. individual insurance companies, which may include business written outside the U.S., if reported on those NAIC statements.

Look for additional survey results later this week on PropertyCasualty360, as well as the complete package in the July issue of NU Property & Casualty magazine.