The Fund invests, under normal circumstances, at least 80 percentage of the Fund's investable assets in bonds. For purposes of this policy, bonds include all fixed income securities, including but not limited to debt obligations issued by the U.S. government and its agencies, corporate debt securities, mortgage-related securities and asset-backed securities (including collateralized debt obligations and collateralized loan obligations). In pursuit of this policy, the Fund may invest a large percentage of its investable assets in securities included in the Bloomberg US Aggregate Bond Index