ARMOUR Residential REIT, Inc.( ARMOUR) is an externally-managed Maryland corporation managed by ARMOUR Residential REIT, Inc. The Company invests primarily in hybrid adjustable rate, adjustable rate and fixed rate residential mortgage backed securities (RMBS). These securities are issued or guaranteed by a United States Government-sponsored entity (GSE), such as the Federal National Mortgage Association (Fannie Mae) or the Federal Home Loan Mortgage Corporation (Freddie Mac), or are guaranteed by the Government National Mortgage Administration (Ginnie Mae) collectively, Agency Securities. From time to time, a portion of its portfolio may be invested in unsecured notes and bonds issued by United States Government-chartered entities, collectively, Agency Debt. As of December 31, 2012, Agency Securities account for 100% of its portfolio.