Common Securitization Solutions (CSS) is a financial technology company established as a joint venture between Fannie Mae and Freddie Mac under the direction of the Federal Housing Finance Agency (FHFA). Its core mission is to operate the Common Securitization Platform (CSP), a modern, single-platform infrastructure for issuing and managing Uniform Mortgage-Backed Securities (UMBS) and other mortgage-backed securities. By providing this utility, CSS aims to increase efficiency, liquidity, and transparency in the secondary mortgage market, ultimately supporting the stability of the U.S. housing finance system. The company was formed in 2014 as a key initiative following the 2008 financial crisis to reform and strengthen the housing market.

Founded in

United States