The fund invests in a broad, diversified portfolio of securities of small and medium capitalization companies traded on a principal U.S. exchange or U.S. over-the-counter market, and securities of small and medium capitalization non-U.S. companies in foreign countries, including emerging market countries. Under normal circumstances, the fund invests at least 80% of its net assets, including borrowings for investment purposes, in securities of small and medium capitalization companies.