The investment seeks to provide investment results that correspond generally to the price and yield performance, before fees and expenses, of the Solactive MLP & Energy Infrastructure Index. The fund invests at least 80% of its total assets in the securities of the index. It also invests at least 80% of its total assets in securities of master limited partnerships and energy infrastructure corporations. The fund's 80% investment policies are non-fundamental and require 60 days prior written notice to shareholders before they can be changed. The index tracks the performance of midstream energy infrastructure MLPs and corporations. It is non-diversified.