AGNC Investment Corp operates as a real estate investment trust REIT in the United States The company invests in residential mortgage passthrough securities and collateralized mortgage obligations for which the principal and interest payments are guaranteed by the United States governmentsponsored enterprise or by the United States government agency It funds its investments primarily through collateralized borrowings structured as repurchase agreements The company has elected to be taxed as a REIT under the Internal Revenue Code of 1986 and would not be subject to federal corporate income taxes if it distributes at least 90 of its taxable income to its stockholders The company was formerly known as American Capital Agency Corp and changed its name to AGNC Investment Corp in September 2016 AGNC Investment Corp was incorporated in 2008 and is headquartered in Bethesda Maryland