The investment seeks to track the investment results (before fees and expenses) of the Nasdaq BulletShares® USD Emerging Markets Debt 2024 Index (the underlying index). The fund generally will invest at least 80% of its total assets in securities that comprise the underlying index. The underlying index is designed to represent the performance of a held-to-maturity portfolio of U.S. dollar-denominated emerging markets bonds with maturities or, in some cases, effective maturities in the year 2024 (collectively, 2024 Bonds). The fund is non-diversified.