Freddie Mac is engaged in purchasing residential mortgages and mortgage-related securities in the secondary mortgage market and securitizing them into mortgage-related securities that can be sold to investors. The Company purchases single-family and multifamily mortgage-related securities for its mortgage-related investments portfolio. It also purchases multifamily residential mortgages in the secondary mortgage market and hold those loans either for investment or sale. Freddie Mac finances purchases of its mortgage-related securities and mortgage loans, and manages its interest-rate and other market risks, primarily by issuing a variety of debt instruments and entering into derivative contracts in the capital markets. The Company operates in three segments: Investments, Single-family Guarantee and Multifamily.