MFA Financial, Inc. is a real estate investment trust (REIT). The Company is engaged in the real estate finance business.The Company, through subsidiaries, invests in residential mortgage assets, including Agency mortgage backed securities (MBS), Non-Agency MBS and residential whole loans. The Company's business objective is to deliver shareholder value through the generation of distributable income and through asset performance linked to residential mortgage credit fundamentals. The Company's Agency MBS portfolio consists of Hybrids, 15-year fixed-rate mortgages and adjustable-rate mortgages (ARMs). The Hybrid loans have initial a fixed-rate periods at origination of three, five, seven or 10 years. The Non-Agency MBS portfolio primarily consists of Legacy Non-Agency MBS and MBS collateralized by re-performing and non-performing loans (RPL/NPL MBS).