Freddie Mac, officially known as the Federal Home Loan Mortgage Corporation, is a government-sponsored enterprise established by the U.S. Congress in 1970. Its main goal is to enhance liquidity, stability, and affordability in the U.S. housing market. Freddie Mac achieves this by purchasing mortgages from lenders, converting them into mortgage-backed securities (MBS), and selling these securities to various investors. It guarantees timely payments of principal and interest on these MBS, which helps replenish lenders' funds and supports the issuance of new mortgages.

Freddie Mac primarily serves mortgage lenders, including banks and financial institutions, by providing them with capital to fund home loans. It also plays a significant role in the housing market by increasing the availability of mortgage credit, which benefits homebuyers. Regulated by the Federal Housing Finance Agency, Freddie Mac is a vital component of the U.S. housing finance system, ensuring a reliable supply of mortgage funds nationwide.