The fund generally will invest at least 80% of its total assets in the components that comprise the index. The index is designed to measure the performance of U.S. dollar-denominated, investment grade corporate bonds that are SEC-registered securities, Section 3(a)(2) securities under the Securities Act of 1933 (“Securities Act”), or Rule 144A securities under the Securities Act and whose issuers are public companies domiciled in the United States.