497 1 c58484fe497.txt 497 PROSPECTUS SUPPLEMENT -- JUNE 3, 2010 FUND (PROSPECTUS EFFECTIVE DATE) MATERIAL NUMBER RiverSource Disciplined Small and Mid Cap Equity Fund S-6505-99 F (Sept. 29, 2009) 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portfolio management, as described under the caption "Fund Management and Compensation - Investment Manager" is superseded and replaced with the following: Portfolio Managers. The portfolio managers responsible for the day-to-day management of the Fund are: Alfred F. Alley III, CFA, 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 June 2005. Prior to June 2005, Mr. Alley was a managing partner at Tandem Trading, LLC from October 2001 to June 2005. 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-6505-4 A (6/10) PROSPECTUS SUPPLEMENT -- JUNE 3, 2010 FUND (PROSPECTUS EFFECTIVE DATE) MATERIAL NUMBER RiverSource Disciplined Small Cap Value Fund (Sept. 29, 2009) S-6397-99 F Effective July 3, 2010, the following changes are 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portfolio management, as described under the caption "Fund Management and Compensation - Investment Manager" is superseded and replaced with the following: Portfolio Managers. The portfolio managers responsible for the day-to-day management of the Fund are: Alfred F. Alley III, CFA, 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 June 2005. Prior to June 2005, Mr. Alley was a managing partner at Tandem Trading, LLC from October 2001 to June 2005. 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-6397-5 A (6/10)