Strategy. American Century Investment Management, Inc. (the Sub-Adviser) serves as the Funds sub-adviser. The Sub-Adviser is responsible for the day-to-day management of the Funds assets. The Sub-Adviser looks for stocks, which includes common stock and may include preferred stock or other types of stocks, of medium-sized companies it believes will increase in value over time, using the Funds investment strategy. In implementing this strategy, the Sub-Adviser makes its investment decisions based primarily on its analysis of individual companies, rather than on broad economic forecasts. Management of the Fund is based on the belief that securities of issuers in a growing industry can sustain above average earnings growth. Under normal market conditions, the Funds portfolio will primarily consist of securities of companies … Show more… American Century Investment Management, Inc. (the Sub-Adviser) serves as the Funds sub-adviser. The Sub-Adviser is responsible for the day-to-day management of the Funds assets. The Sub-Adviser looks for stocks, which includes common stock and may include preferred stock or other types of stocks, of medium-sized companies it believes will increase in value over time, using the Funds investment strategy. In implementing this strategy, the Sub-Adviser makes its investment decisions based primarily on its analysis of individual companies, rather than on broad economic forecasts. Management of the Fund is based on the belief that securities of issuers in a growing industry can sustain above average earnings growth. Under normal market conditions, the Funds portfolio will primarily consist of securities of companies with attractive returns on invested capital that are demonstrating business improvement. Analytical indicators helping to identify signs of business improvement may include accelerating earnings or revenue growth rates, increasing cash flows, or other indications of the relative strength of a companys business. These techniques help the Sub-Adviser make decisions about buying or holding the stocks of companies it believes have favorable growth prospects and selling the stocks of companies whose characteristics no longer meet the Sub-Adviser's criteria. The Fund will usually purchase common stocks of companies that are medium-sized at the time of purchase, but it will purchase securities of smaller- and larger-sized companies as well. Also, although the Sub-Adviser intends to invest the Funds assets primarily in U.S. securities, the Fund may invest in securities of foreign companies when these securities meet the Sub-Advisers standards of selection. The Sub-Adviser does not intend to concentrate weight in particular sectors. Show less