| The Invesco VRDO Tax-Free ETF (Fund) is based on the ICE US Municipal AMT-Free VRDO Constrained Index (Index). The Fund generally will invest at least 80% of its total assets in U.S. dollar tax-exempt variable rate demand obligations (VRDOs). The Index tracks the performance of U.S. dollar tax-exempt VRDOs that are publicly issued by U.S. states and territories, and their political subdivisions, and that have interest rates that reset daily, weekly or monthly. 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 on the last calendar day of the month. Effective at the close of markets on March 24, 2021, the Fund s name, underlying index, index provider, objective and strategy changed. The Fund s name changed from the Invesco VRDO Tax-Free Weekly ETF to the Invesco VRDO Tax-Free ETF, its Underlying Index changed from the Bloomberg U.S. Municipal AMT-Free Weekly VRDO Index to the ICE US Municipal AMT-Free VRDO Constrained Index, the index provider changed from Bloomberg to ICE Data Indices. |