The investment seeks to provide investment results that correspond generally to the price and yield performance of an index that tracks the U.S. high yield municipal bond market and to provide income that is exempt from federal income taxes. The fund employs a sampling strategy in seeking to track the performance of the S&P Municipal Yield Index. It generally invests at least 80% of total assets in the securities comprising the index or in securities that the Sub-Adviser determines have economic characteristics that are substantially identical to the economic characteristics of the securities that comprise the index. The fund is non-diversified.