497 1 c58484be497.txt FORM 497 PROSPECTUS SUPPLEMENT -- JUNE 3, 2010 FUND (PROSPECTUS EFFECTIVE DATE) MATERIAL NUMBER RiverSource Disciplined Equity Fund (Sept. 29, 2009) S-6263-99 J Effective July 3, 2010, the following change is hereby made to the Fund's prospectus: The description of the portfolio managers responsible for the Fund's day-to-day portfolio management, as described under the caption "Fund Management and Compensation - Investment Manager" is superseded and replaced with the following: Portfolio Manager. The portfolio manager responsible for the day-to-day management of the Fund is: Brian M. Condon, Portfolio Manager - Managed the Fund since May 2010. - Joined the investment manager in May 2010 when it acquired the long-term asset management business of Columbia Management Group, where he worked as an investment professional since 1999. - Began investment career in 1993. - BA from Bryant College and MS in finance from Bentley College. The rest of the section remains unchanged. S-6263-5 A (6/10)