They are a publicly traded principal investment firm that acquires and holds mortgage-related and other assets.They acquire residential mortgage-backed securities, either issued by U.S. government agencies or guaranteed as to principal and interest by U.S. government agencies or U.S. government-sponsored entities. They are a Virginia corporation that is taxed as a C corporation for U.S. federal tax purposes and our principal executive offices are located at: Potomac Tower, 1001 Nineteenth Street North, Suite 1900, Arlington, Virginia, 22209.