Freddie Mac is a government-sponsored enterprise based in the United States, primarily engaged in the finance sector, with a focus on lending and mortgage brokerage. Founded in 1970, the company plays a significant role in the real estate market by providing liquidity, stability, and affordability to the housing market. Freddie Mac's published documents include guides and research articles that address various aspects of mortgage financing and economic trends. Notably, the company produces the Primary Mortgage Market Survey (PMMS), which has been a standard for tracking mortgage interest rates since 1971. Recent enhancements to the PMMS methodology aim to improve the accuracy and relevance of mortgage rate data in response to evolving market conditions. Additionally, Freddie Mac has released playbooks related to the transition from LIBOR and COFI, offering guidance on the implications of these changes for mortgage products. Overall, Freddie Mac's expertise encompasses mortgage rate analysis, economic research, and practical resources for navigating the complexities of the mortgage market.