SMTH pursues its investment objective by investing, under normal circumstances, at least 80% of its net assets (plus any borrowings for investment purposes) in bonds. Bonds include, but are not limited to, government notes and bonds, corporate bonds, convertible bonds, commercial and residential mortgage-backed securities and zero-coupon bonds. The Fund will target a weighted average effective duration +/- 40% of the current effective duration of the Bloomberg US Aggregate Bond Index.