Under normal circumstances, the fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in the securities of the underlying index. The underlying index, as presently constituted, is designed to track the performance of the top 50 U.S. listed and domiciled companies based on a “Market Leader Score” within the S&P 500® Index that generate at least 50% of their revenues from the United States. The fund is non-diversified.