Redwood Trust is a specialty finance company in the US that operates through three segments: Residential Mortgage Banking, Business Purpose Mortgage Banking, and Investment Portfolio. The company acquires residential loans from third-party originators for sale, securitization, or transfer to its investment portfolio. It also originates and acquires business purpose loans, invests in securities retained from securitization activities, and qualifies as a real estate investment trust (REIT) for federal income tax purposes.