White Mountains Insurance Group Ltd is engaged in the business of making opportunistic and value-oriented acquisitions of businesses and assets in the insurance, financial services, and related sectors, operating these businesses and assets through its subsidiaries and, if and when attractive exit valuations become available, disposing of these businesses and assets. The company conducts its business in four areas: municipal bond insurance, property and casualty insurance and reinsurance, capital solutions for asset and wealth management firms, and other operations. White Mountains's municipal bond insurance business is conducted through its subsidiary.