The fund tracks an index of investment-grade securities issued or guaranteed by the US Treasury. The index holds USD-denominated Treasurys with inflation-linked principal and interest. Securities must have maturities between zero and five years. The index is market-value-weighted and is rebalanced monthly. The fund aims to hold fixed income securities in parallel proportions as they are reflected in the index. The Manager may also opt to use a sampling strategy, which uses quantitative analysis to select bonds that resemble index constituents in terms of key risk factors, performance attributes, industry weightings, market capitalization and other appropriate financial characteristics. The fund is also offered as CAD-hedged units and as USD units.