The investment seeks to track the investment results (before fees and expenses) of the Russell 2000® Invesco Dynamic Multifactor Index. The fund generally will invest at least 80% of its total assets in the securities that comprise the underlying index. The underlying index is designed to select equity securities from within the Russell 2000 Index, which measures the performance of 2,000 small-capitalization companies in the United States. The fund is non-diversified.