AG Mortgage Investment Trust, Inc. is a real estate investment trust (REIT) focused on investing in, acquiring and managing a diversified portfolio of residential mortgage assets, other real estate-related securities and financial assets, which it refers to as its target assets. The Company is externally managed and advised by AG REIT Management, LLC. It has invested in residential mortgage-backed securities (RMBS), for which a United States government agency, such as the Government National Mortgage Association (Ginnie Mae), or a federally-chartered corporation, such as the Federal National Mortgage Association (Fannie Mae), or the Federal Home Loan Mortgage Corporation (Freddie Mac), guarantees payments of principal and interest on the securities. Its Agency RMBS investments include mortgage pass-through securities and may include collateralized mortgage obligations (CMOs). Its non-Agency RMBS investments may include fixed-and floating-rate securities, including investment grade.