Summary Prospectus March 1, 2025

American Century Investments Ultra Fund

Investor Class: TWCUX

1 Class: TWUIX

Y Class: AULYX

A Class: TWUAX

C Class: TWCCX

R Class: AULRX

R5 Class: AULGX

R6 Class: AULDX

G Class: AULNX

Before you invest, you may want to review the fund's prospect, which contains more information about the fund and its risks. You can find the fund's prospect, reports to shareholders, and other information about the fund online at the web addresses listed

newaci_logoblkf39.jpg