Federal Home Loan Mortgage Corporation, commonly known as Freddie Mac, is a prominent entity operating within the secondary mortgage market across the United States. Its core activities involve acquiring residential mortgage loans, encompassing both individual dwellings and multi-unit properties, which are initially generated by various lending institutions. Additionally, it dedicates capital to mortgage-backed instruments and related financial products. The organization's operations are structured into two main divisions: Single-family and Multifamily. The Single-family segment is tasked with the procurement, securitization, and backing of loans for single-family residences. It additionally supervises the credit risk associated with these mortgages and oversees its portfolio of mortgage-linked investments, single-family securitization efforts, and treasury operations. This division extends its services to a broad array of financial entities, including mortgage banking firms, various categories of commercial and regional banks, local credit unions, housing finance authorities, thrift institutions, and non-bank financial organizations. The Multifamily segment, conversely, concentrates on the acquisition, sale, securitization, and endorsement of loans and securities tied to multi-unit properties. This involves issuing specific "K" and "SB" certificates, as well as developing and guaranteeing other securitized offerings and credit risk transfer instruments, alongside providing diverse mortgage-related assurances. Its customer base encompasses banks, other deposit-taking entities, insurance providers, asset management firms, national banks, retirement funds, state and local government bodies, real estate investment trusts (REITs), brokerage houses, and a wide spectrum of lending organizations. Established in 1970, the corporation's primary business location is in McLean, Virginia.