Running a business is a risk The Travelers Companies will insure. While it does offer personal auto and homeowners insurance, the company's largest segment is commercial property/casualty insurance to businesses big and small. It is one of the largest business insurers in the US, providing commercial auto, property, workers' compensation, marine, and general and financial liability coverage to companies in North America (the largest percentage of business) and the UK. The company also offers surety and fidelity bonds as well as professional and management liability coverage for commercial operations.