The investment seeks to provide investment results that correspond generally to the price and yield performance of the Solactive MLP & Energy Infrastructure Index. The fund invests at least 80% of its total assets in the securities of the underlying 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 it can be changed. The underlying index tracks the performance of MLPs and energy infrastructure corporations. It is non-diversified.