ARMOUR Residential REIT, Inc. operates as a real estate investment trust, which engages in the investment in business of investing in fixed rate, hybrid adjustable rate and adjustable rate residential mortgage backed securities. It also invests in residential mortgage backed securities issued or guaranteed by a United States government-sponsored entity such as the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation or guaranteed by the Government National Mortgage Administration. The company was founded on February 5, 2008 and is headquartered in Vero Beach, FL.