The investment seeks to track the S&P Global Infrastructure IndexTM. The index is designed to track performance of the stocks of large infrastructure companies in developed or emerging markets. The fund generally will invest at least 80% of its assets in the component securities of its underlying index and in investments that have economic characteristics that are substantially identical to the component securities of its underlying index and may invest up to 20% of its assets in certain futures, options and swap contracts, cash and cash equivalents,.