Nationstar Mortgage Holdings Inc is a specialty finance company that earns fees through the delivery of quality servicing, origination, and transaction based services principally related to single-family residences throughout the United States. Nationstar provides services to homeowners, home buyers, home sellers, and real estate investors. The company operates through three segments: Servicing, Originations, and Xome. The vast majority of its revenue is derived from its Servicing segment. Its Originations segment primarily originates conventional residential mortgage loans in all 50 states and the District of Columbia. Its Xome segment is a residential real estate technology company.