The fund is an actively managed exchange-traded fund ("ETF") that invests in U.S.-listed equity securities of small- and mid-capitalization companies. Under normal circumstances, the fund will invest at least 80% of its net assets (plus any borrowings for investment purposes) in small- and mid-capitalization companies. The equity securities held by the fund must be listed on a U.S. exchange and may include common stocks of U.S. companies, American Depositary Receipts ("ADRs"), and real estate investment trusts ("REITs").