Dynex Capital, Inc. is a mortgage real estate investment trust that invests in residential and commercial mortgage-backed securities (MBS) in the United States. Agency MBS carry a guaranty of principal payment from a U.S. government agency or government-sponsored entity such as Fannie Mae or Freddie Mac, while non-Agency MBS have no such guaranty of principal or interest. The company has qualified as a real estate investment trust for federal income tax purposes and generally would not be subject to federal income taxes if it distributes at least 90% of its taxable income to shareholders. Incorporated in 1987, it is headquartered in Glen Allen, Virginia.