Who are the winners in total premiums written in 2018, among property & casualty insurers? The National Association of Insurance Commissioners (NAIC) released data this week that provides property & casualty insurance market share information and identifies the leading insurance writers in several key lines of business. The 2018 market share data include countrywide direct written premiums for the top 25 groups and companies as reported on the state page of the annual financial statement for insurers that report to the NAIC. |

Over $670 billion direct premiums written in 2018

With 96.55% of property & casualty insurance companies reporting to date, direct premiums written for all lines of business are $670,262,757,463. The top 10 P&C companies reporting to date have a cumulative market share of 47.79%. The reports reflect data filed by insurers as of March 4 and will be refreshed daily through March 11 and then each Monday throughout March. The full 2018 Market Share Reports for Property/Casualty Groups and Companies will be available this summer and will contain more in-depth information. |

About the NAIC

The NAIC is the United States standard-setting and regulatory support organization created and governed by the chief insurance regulators from the 50 states, the District of Columbia and five U.S. territories. Through the NAIC, state insurance regulators establish standards and best practices, conduct peer review, and coordinate their regulatory oversight. NAIC staff supports these efforts and represents the collective views of state regulators domestically and internationally. NAIC members, together with the central resources of the NAIC, form the national system of state-based insurance regulation in the U.S. Check out the slideshow above for the rankings of the 25 top P&C groups and companies for all lines in 2018. Related: Top 15 P&C groups in 2017, as ranked by the NAIC The top 100 P&C insurance groups in 2017 NAIC names 2019 committee chairs and vice chairs