Under normal circumstances, the Fund invests at least 80 percent of its net assets plus any borrowings for investment purposes in mortgage-backed securities. The Fund defines MBS as any agency or non-agency residential or commercial mortgage-backed security and any futures contract, forward agreement, swap contract, or option linked to the preceding The Fund is an actively managed exchange-traded fund that seeks to achieve its investment objectives by investing primarily in MBSs issued by the Government National Mortgage Association, Federal National Mortgage Association and Federal Home Loan Mortgage Corporation.