American Capital Mortgage Investment Corp. operates as a real estate investment trust (REIT) in the United States. The company invests in, finances, and manages a portfolio of mortgage-related investments, such as agency residential mortgage-backed securities, non-agency mortgage investments, and other mortgage-related investments. Its residential mortgage-backed securities (RMBS) include residential mortgage pass-through certificates and collateralized mortgage obligations; non-agency mortgage investments comprise RMBS backed by residential mortgages, as well as prime and non-prime residential mortgage loans; and other mortgage-related investments include mortgage servicing rights, commercial mortgage-backed securities, mortgage REIT equity securities, commercial mortgage-backed securities, commercial mortgage loans, mortgage-related derivatives. The company has elected to be taxed as a REIT and it would not be subject to federal income tax, provided it distributes at least 90% of its taxable income to its shareholders. American Capital Mortgage Investment Corp. was incorporated in 2011 and is based in Bethesda, Maryland.