TPG Mortgage Investment Trust, Inc. operates as a residential mortgage real estate investment trust in the United States. Its investment portfolio includes residential investments such as non-agency loans, agency-eligible loans, home equity loans, re-performing and non-performing loans, and non-agency residential mortgage-backed securities, as well as commercial loans and commercial mortgage-backed securities. The company qualifies as a real estate investment trust for federal income tax purposes and generally would not be subject to federal corporate income taxes if it distributes at least 90% of its taxable income to its stockholders. Formerly known as AG Mortgage Investment Trust, Inc., it changed its name to TPG Mortgage Investment Trust, Inc. in December 2025, was incorporated in 2011, is based in New York, New York, and operates as a subsidiary of TPG Inc.