IBIJ is part of iShares TIPS Term Bond suite. The fund tracks the performance of a held-to-maturity portfolio consisting of market value-weighted US Treasury inflation-protected securities with maturities between January 1, 2033, and October 15, 2033. Instead of the perpetual maturity range of a typical bond fund, IBIJ provides exposure to a specific maturity date, similar to an individual bond. As the fund approaches its maturity date, duration and YTM will continue to decline. On its target date, the fund will unwind and return capital to shareholders. This structure permits the fund to be used as a building block for a bond ladder, or to plan for a future need. The underlying index rebalances on the last calendar day of each month.