The investment seeks to track the investment results (before fees and expenses) of the Invesco BulletShares® Municipal Bond 2030 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 measure the performance of a portfolio of U.S. dollar denominated investment-grade municipal bonds with maturities in the year 2030 or, in some cases, effective maturities in the year 2030. It does not purchase all of the securities in the index; instead, the fund utilizes a sampling methodology to seek to achieve its investment objective. It is non-diversified.