MGIC Investment Corp provides private mortgage insurance, other mortgage credit risk management solutions, and ancillary services. The insurance premiums that these customers pay for the protection accounts for close to majority of the company's total revenue. Investment income accounts for the remaining revenue. The company sells its insurance products in all 50 states of the United States and in Puerto Rico. Its greatest exposure is in California, Florida, Texas, Pennsylvania, Ohio, Illinois, Virginia, North Carolina, Georgia and New York.