Nationstar Mortgage Holdings Inc. provides servicing, origination and transaction based services principally to single-family residences throughout the United States. The Company operates through three segments: Servicing, Originations and Xome. The Company also operate an integrated residential loan origination platform that is primarily focused on customer retention. The Company provides residential mortgage services in the United States conducting operations through its Nationstar Mortgage and Champion Mortgage brands. Servicing primarily involves loan administration, payment processing, mortgage escrow account administration, collection of insurance premiums, response to homeowner inquiries and loss mitigation solutions. The Company originates residential mortgage loans through both the Greenlight Financial Services and Nationstar Mortgage brands. Its Xome subsidiary offers an array of complementary services related to the purchase and disposition of residential real estate.