The index utilizes certain environmental, social, and governance (“ESG”) criteria to select from the securities included in a modified version of the Bloomberg 1-5 Year U.S. Aggregate Index, which is designed to broadly capture the 1-5 year U.S. investment grade, taxable fixed income market. Under normal market conditions, the fund invests at least 80% of the sum of its net assets and the amount of any borrowings for investment purposes in component securities of the index.