Redwood Trust Inc is a specialty finance firm based in Mill Valley, California, focusing on mortgage and investment services across the United States. It operates in three main areas: acquiring residential loans for sale or securitization, originating loans for residential property investors, and managing an investment portfolio that includes a variety of housing-related assets. As a real estate investment trust (REIT), Redwood Trust benefits from certain tax advantages, allowing it to focus on expanding its residential and investor mortgage banking services alongside its diverse investment activities since its inception in 1994.