The Invesco BulletShares 2023 High Yield Corporate Bond ETF (Fund) is based on the Nasdaq Bulletshares USD High Yield Corporate Bond 2023 Index (Index). The Fund will invest at least 80% of its total assets in corporate bonds that comprise the Index. The Index is designed to represent the performance of a held-to-maturity portfolio of US dollar-denominated, high yield corporate bonds with effective maturities in 2023. The Fund does not purchase all of the securities in the Index; instead, the Fund utilizes a 'sampling' methodology to seek to achieve its investment objective. The Fund and the Index are rebalanced monthly.