Federal National Mortgage Association is a government-sponsored company, which engages in the provision of liquidity for purchases of homes and financing of multifamily rental housing and refinancing existing mortgages. The company is headquartered in Washington, Washington Dc and currently employs 8,100 full-time employees. The firm is a government-sponsored, stockholder-owned corporation, chartered by Congress to provide liquidity and stability to the United States housing market. Its segments include Single-Family and Multifamily. The Single-Family business operates in the secondary mortgage market relating to loans secured by properties containing four or fewer residential dwelling units. The Multifamily business operates in the secondary mortgage market relating to loans secured by properties containing five or more residential units. The company engages in three categories of mortgage securitization transactions: lender swap transactions, portfolio securitization transactions, and structured securitization transactions. The company funds its business through the issuance of short-term and long-term debt securities in the domestic and international capital markets.