The investment seeks to track the investment results (before fees and expenses) of the S&P 500® Top 50 Index (the "underlying index"). The fund generally will invest at least 90% of its total assets in the securities that comprise the underlying index. The index provider compiles, maintains and calculates the underlying index, which consists of the 50 largest companies in the S&P 500® Index based on float-adjusted market capitalization. The underlying index's components are weighted by float-adjusted market capitalization. The fund is non-diversified.