MFA Financial, Inc., together with its subsidiaries, operates as a real estate investment trust in the United States. It operates through two segments: Mortgage-Related Assets and Lima One. The Mortgage-Related Assets segment primarily invests in and manages a diversified portfolio of residential whole loans, including nonqualified mortgage loans, business purpose loans such as single-family rental loans, single-family and multifamily transitional loans, legacy re-performing and non-performing loans, and agency-eligible investor loans. This segment also invests in residential mortgage-backed securities, including agency MBS, non-agency MBS, and credit risk transfer securities. The Lima One segment includes a stand-alone mortgage origination and servicing business; and originates and servic…