Chimera Investment Corp. is a real estate investment trust, which engages in the business of investing in a portfolio of mortgage assets, including residential mortgage loans, Agency residential mortgage-backed securities (RMBS), Non-Agency RMBS, Agency commercial mortgage-backed securities (CMBS), and other real estate-related assets. It operates through the following segments: Investment Portfolio and Residential Origination. The Investment Portfolio segment consists of investments and third-party advisory services activities.