Federal National Mortgage Association (Fannie Mae) is a government-sponsored enterprise (GSE) chartered by the United States Congress to support liquidity and stability in the secondary mortgage market, where mortgage loans are purchased and sold. The Company participates in the secondary mortgage market by purchasing mortgage loans and mortgage-related securities for its mortgage portfolio. It also makes other investments that increase the supply of affordable housing. The Company is organized in three business segments: Single-Family Credit Guaranty, Housing and Community Development (HCD), and Capital Markets.