Under normal circumstances, at least 80% of the fund"s net assets, plus the amount of any borrowings for investment purposes, will be invested in the component securities of the index. The index is comprised of USD-denominated bonds. The index deconstructs the USD-denominated bond market, as represented by USD-denominated, taxable bonds that are rated either investment grade or high yield, into one of the five categories of debt. The fund is non-diversified.