The fund invests in a variety of CAD-denominated bonds issued in Canada with maturities greater than one year. The fund includes government (including Crown Corporations), provincial, and corporate bonds. The index draws from the FTSE Canada Universe Bond Index (parent index). Coupons must be equal to or less than 1.2 times the bonds YTM at the time of addition to the index. In addition, eligible securities must be investment-grade with a rating of BBB or higher. Index constituents are adjusted so that the index duration and sector profile closely match that of the parent index. The index is rebalanced quarterly. ZDB aims to hold securities in parallel proportions as they are reflected in the index.