Federal Home Loan Mortgage Corporation operates in the secondary mortgage market in the United States. The company purchases residential mortgage loans originated by lenders, as well as invests in mortgage loans and mortgage-related securities. It operates in three segments: Single-Family Guarantee, Multifamily, and Investments. The Single-Family Guarantee segment purchases, securitizes, and guarantees single-family loans originated by its seller/servicers; and manages single-family mortgage credit risk. This segment serves lenders, including mortgage banking companies, commercial banks, community banks, credit unions, other non-depository financial institutions, housing finance agencies (HFAs), and savings institutions. The Multifamily segment engages in purchase, securitization, and guarantee activities in multifamily loans and securities; issuance of multifamily K Certificates; issuing and guarantying other securitization products; and provision of other mortgage-related guarantees, as well as post-construction financing to apartment project operators. The Investments segment invests principally in mortgage-related securities and single-family performing loans. It serves state and local governments, insurance companies, money managers, central banks, depository institutions, and pension funds. Federal Home Loan Mortgage Corporation was founded in 1970 and is based in McLean, Virginia.