Under normal market conditions, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in securities issued by mid-capitalization companies. It typically invests in a portfolio of 50 to 90 companies. Although the fund will invest primarily in U.S. companies, it may invest up to 15% of its assets in non-U.S. companies that are classified as “developed” by MSCI, Inc. (“MSCI”).