Radian Group Inc., through its subsidiaries, operates as a credit enhancement company in the United States. The company operates in two segments, Mortgage Insurance and Financial Guaranty. The Mortgage Insurance segment provides credit-related insurance coverage, primarily through private mortgage insurance that protects mortgage lenders from all or a portion of default-related losses on residential mortgage loans made to home buyers, as well as facilitates the sale of these mortgage loans in the secondary mortgage market; and risk management services to mortgage lending institutions. This segment focuses on providing domestic first-lien residential mortgage insurance products and services. It serves mortgage bankers, mortgage brokers, commercial banks, savings institutions, credit unions, and community banks. The Financial Guaranty segment provides financial guaranty insurance on its portfolio of public finance and structured finance credits. Radian Group Inc. was founded in 1977 and is headquartered in Philadelphia, Pennsylvania.