The index measures the performance of investment-grade corporate bonds of both U.S. and non-U.S. issuers that are U.S. dollar-denominated and publicly issued in the U.S. domestic market and have a remaining maturity of greater than or equal to one year and less than five years. The fund will invest at least 80% of its assets in the component securities of the index, and the fund will invest at least 90% of its assets in fixed income securities of the types included in the underlying index that BFA believes will help the fund track the index.