The investment seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Russell 2000 Index (the "underlying index"). The fund generally invests at least 90% of its assets in securities of the underlying index and in depositary receipts representing securities of the underlying index. The underlying index measures the performance of the small-capitalization sector of the U.S. equity market. The underlying index includes issuers representing approximately 10% of the total market capitalization of all publicly-traded U.S. equity securities.