The Fund's investment strategy focuses on Growth with 0.8% total expense ratio. The minimum amount to invest in American Century Mutual Funds, Inc: Heritage Fund; Class I Shares is $5,000,000 on a standard taxable account. American Century Mutual Funds, Inc: Heritage Fund; Class I Shares seeks long-term capital growth by investing in companies whose earnings and revenues are growing at an accelerated rate. Firms exhibiting these accelerated rates will, in the view of Fund Management, have a greater potential of increasing in value over the long-term.