Insurance company. Ca department of insurance agent and broker overview, license status 10 biggest insurance companies with berkshire hathaway leading the pack, these are the 10 biggest insurance companies by revenue. auto, home, business insurance & more | mercury insurance get protected today for auto, home, business, and more with mercury insurance. customized coverage, low rates, excellent service, and 24/7 claims service. consumer insurance search results - cis search insurance companies and subsidiaries with cis company search. verify names in your policy or contact your insurance department. best car insurance companies of october 2023 find the best auto insurance companies with our expert evaluation of rates, coverage features, complaints, collision claims grades, and website usability. see our 2023 top picks. chubb in the u.s. chubb is the world’s largest publicly traded property & casualty insurance company, serving consumers & companies of all sizes. get a quote today. coinsurance - glossary summary home.