The investment seeks investment results that correspond generally to the price and yield (before the fund's fees and expenses) of an equity index called the NASDAQ® Clean Edge® Green Energy IndexSM. The fund will normally invest at least 90% of its net assets (including investment borrowings) in the common stocks and depositary receipts that comprise the index. The index is designed to track the performance of small, mid and large capitalization clean energy companies that are publicly traded in the United States. It is non-diversified.