American Century Small Company Fund I Class

Over

Under normal market conditions, the fund will invest at least 80% of its net assets in stocks of smaller-capitalization U.S. companies. The portfolio managers consider small companies to be those that, at the time of investment, have a market capitalization not greater than that of the largest company in the Russell 2000® Index. The fund may invest in equity securities issued by real estate investment trusts (REITs).