The Fund seeks to track the investment results of the BlackRock High Yield Systematic Bond Index (the Underlying Index), which consists of U.S. dollar-denominated, high yield (as determined by BlackRock Index Services, LLC (the Index Provider)) corporate bonds. Component securities include publicly-issued debt of U.S. corporate issuers, U.S. dollar-denominated, publicly issued debt of non-U.S. corporate issuers, and bonds offered pursuant to Rule 144A under the Securities Act of 1933, as amended (the 1933 Act) with or without registration rights. As of February 29, 2024, a significant portion of the Underlying Index is represented by securities of companies in the consumer cyclical, energy and financials industries or sectors. The components of the Underlying Index are likely to change over time.