The investment seeks inflation protection and maximize total returns. The fund will pursue its investment objective by investing in a universe of U.S. and foreign debt securities, including inflation-protected securities, and derivative instruments. It primarily invests in securities that mature within twenty years from the date of settlement, but may, as in the case of mortgage-backed securities, invest in securities with longer maturities. Under normal circumstances, the fund will generally maintain a weighted average duration between three and ten years.