Under normal circumstances, the Fund invests at least 80% of its net assets in equity securities of mid-cap companies. For thesepurposes, mid-cap companies are those companies that, at the time of purchase of the securities, have total marketcapitalization within the range of (i) companies included in the Russell MidCap Growth Index or the S&P MidCap 400 Index, asreported by the index at the most recent quarter end, or (ii) $1 billion to $30 billion. Both indexes are designed to track theperformance of medium-capitalization stocks. At December 31, 2020, the companies in the Russell MidCap Growth Index rangedfrom $623 million to $59.7 billion and the companies in the S&P MidCap 400 Index ranged from $1.47 billion to $22.2 billion.Because of the Funds long-term approach to investing, it could have a significant portion of its assets invested in securities ofissuers that have appreciated beyond the market capitalization thresholds noted. Equity securities include common or preferredstocks that are listed on U.S. exchanges.