Redwood Trust, Inc. engages in the business of investing in mortgages and other real estate-related assets. It operates through the segments: Residential Lending, Business Purpose Lending, Multifamily Investments, Third-Party Residential Investments, and Corporate. The Residential Lending segment consists of a mortgage loan conduit that acquires residential loans from third-party originators for subsequent sale, securitization, or transfer into the investment portfolio. The Business Purpose Lending segment includes the platform that originates and acquires business purpose residential loans. The Multifamily Investments segment refers to the investments in securities collateralized by multifamily mortgage loans, as well as other investments in multifamily mortgages and related assets. The Third-Party Residential Investments segment contains the investment in residential mortgage-backed securities (RMBS) issued by third parties, investments in Freddie Mac securitizations. The company was founded by George E. Bull III, Douglas B. Hansen and Frederick H. Borden on April 11, 1994 and is headquartered in Mill Valley, CA.