The Fund provides exposure to U.S. real estate investment trusts (REITs) with short-term lease agreements which may exhibit less price sensitivity to interest rate changes than REITs with longer-term lease agreements. The Fund seeks to track the investment results, before fees and expenses, of the Dow Jones U.S. Select Short-Term REIT Index which is composed of U.S. exchange-traded equity REITs that concentrate their holdings in apartment buildings, hotels, self-storage facilities and manufactured home properties which typically have shorter lease terms than REITs that invest in other sectors.