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 provides residential loan services in the United States. The Company also operates an integrated residential loan origination platform that is primarily focused on customer retention. Its Xome subsidiary offers an array of complementary services related to the purchase and disposition of residential real estate. It provides non-bank services and residential mortgage services in the United States conducting operations through its Nationstar Mortgage and Champion Mortgage brands. It originates and purchases conventional mortgage loans conforming to the underwriting standards of the government sponsored entities, which it collectively refers to as Agency loans. The Xome segment is a provider of technology and data-enhanced solutions.