The fund will invest at least 80% of its assets in the component securities of the underlying index, and it will invest at least 90% of its assets in fixed income securities of the types included in the underlying index. The index consists of U.S. dollar-denominated, investment-grade securities publicly issued by U.S. and non-U.S. corporate issuers that have $300 million or more of outstanding face value at the time of inclusion.