1) Lehman Brothers
Lehman Brothers, an innovator in global finance, serves the financial needs of corporations, governments and municipalities, institutional clients, and high net worth individuals worldwide. We maintain leadership positions in equity and fixed income sales, trading and research, investment banking and investment management.
http://www.lehman.com/
2) Fannie Mae
Fannie Mae provides stability, liquidity, and affordability to the nation's housing finance system under all economic conditions. We exist to expand affordable housing and bring global capital to local communities in order to serve the U.S. housing market.
Fannie Mae has a federal charter and operates in America's secondary mortgage market to ensure that mortgage bankers and other lenders have enough funds to lend to home buyers at low rates. Our job is to help those who house America.
Fannie Mae was created in 1938, under President Franklin D. Roosevelt, at a time when millions of families could not become homeowners, or risked losing their homes, for lack of a consistent supply of mortgage funds across America.
http://www.fanniemae.com/index.jhtml
3) Freddie Mac
Freddie Mac's mission is to provide liquidity, stability and affordability to the housing market.
Congress defined this mission in our 1970 charter [PDF 54K], which lays the foundation of our business and the ideals that power our goals.
Our mission forms the framework for our business lines, shapes the products we bring to market and drives the services we provide to the nation's housing and mortgage industry. Everything we do comes back to making America's mortgage markets liquid and stable and increasing opportunities for homeownership and affordable rental housing across the nation.
http://www.freddiemac.com/