The investment seeks to replicate as closely as possible, before fees and expenses, the price and yield performance of the S&P Green Bond U.S. Dollar Select Index (the index). The fund normally invests at least 80% of its total assets in securities that comprise the fund's benchmark index. The index is comprised of bonds issued for qualified green purposes and seeks to measure the performance of U.S. dollar denominated green-labeled bonds issued globally. The fund is non-diversified.