The investment seeks to track the investment results (before fees and expenses) of the Nasdaq BulletShares® USD Corporate Bond 2028 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 will typically include between 20-400 securities and is designed to represent the performance of a held-to-maturity portfolio of U.S. dollar-denominated investment grade corporate bonds with maturities or, in some cases, "effective maturities" in the year 2028 (collectively, "2028 Bonds"). The fund is non-diversified.