Prospectus Supplement
Dated Oct. 3, 2005*
RiverSource(SM) Stock Fund (Nov. 29, 2004) S-6351-99 Y
SEPARATION FROM AMERICAN EXPRESS COMPANY
On Sept. 30, 2005, Ameriprise Financial, Inc. (Ameriprise Financial) became an
independent company with no affiliation to American Express Company and is
now trading as a separate public company under the ticker symbol AMP.
Ameriprise Financial and its subsidiaries provide a variety of services to the
RiverSource Mutual Funds:
- --------------------------------------------- ------------------------------- --------------------------
Company Name (Effective Aug. 1, 2005) Former Name/Service Provider Services
- --------------------------------------------- ------------------------------- --------------------------
Ameriprise Financial, Inc. American Express Financial Administrative Services
Corporation
- --------------------------------------------- ------------------------------- --------------------------
RiverSource Investments, LLC Services previously provided Investment Management
by American Express Financial Services
Corporation
- --------------------------------------------- ------------------------------- --------------------------
Ameriprise Financial Services, Inc. American Express Financial Distribution Services
Advisors Inc.
- --------------------------------------------- ------------------------------- --------------------------
RiverSource Service Corporation American Express Client Transfer Agent Services
Service Corporation
- --------------------------------------------- ------------------------------- --------------------------
Ameriprise Trust Company American Express Trust Company Custodian Services
- --------------------------------------------- ------------------------------- --------------------------
On Oct. 1, 2005, the Fund changed its name from AXP Stock Fund to RiverSource
Stock Fund.
ADDITIONAL UPDATE
At a Board of Directors meeting on January 12-13, 2005, the directors of the
Fund determined that it was in the best interests of shareholders to withdraw
the Fund's assets from the master portfolio structure. The steps to withdraw
from the master portfolio and establish an independent portfolio of securities
for the Fund are expected to be completed in late 2005 or early 2006.
RiverSource Investments, LLC, the investment manager to the master portfolio,
will continue to serve as investment manager to the Fund under the same terms
and conditions.
S-6351-25 A (10/05)
Valid until next update.
* Destroy Nov. 29, 2005
The fees and expenses table and expense examples contained in the Fund's
prospectus, which describe the fees and expenses you may pay if you buy and hold
shares of the Fund, have been updated, adjusted to reflect current fees. The
updated fees and expenses table and expense examples referenced below replaces
those in the Fund's current prospectus.
FEES AND EXPENSES
Fund investors pay various expenses. The table below describes the fees and
expenses that you may pay if you buy and hold shares of the Fund. Expenses are
based on the Fund's most recent fiscal year, adjusted to reflect current fees.
Shareholder Fees (fees paid directly from your investment)
Class A Class B Class C Class Y
Maximum sales charge (load) imposed on purchases(a)
(as a percentage of offering price) 5.75% none none none
Maximum deferred sales charge (load) imposed on sales
(as a percentage of offering price at time of purchase) none(b) 5% 1% none
Annual Fund Operating Expenses(c) (expenses that are deducted from Fund assets)
As a percentage of average daily net assets: Class A Class B Class C Class Y
Management fees(d) 0.46% 0.46% 0.46% 0.46%
Distribution (12b-1) fees 0.25% 1.00% 1.00% 0.00%
Other expenses(e) 0.20% 0.23% 0.23% 0.29%
Total 0.91% 1.69% 1.69% 0.75%
(a) This charge may be reduced depending on the value of your total investments
in RiverSource funds. See "Sales Charges."
(b) For Class A purchases over $1,000,000 on which no sales charge is assessed,
a 1% sales charge may apply if you sell your shares within one year after
purchase.
(c) Both in this table and the following example Fund operating expenses
include expenses charged by both the Fund and its Portfolio as described
under "Fund Management and Compensation."
(d) Includes the impact of a performance incentive adjustment fee that
decreased the management fee by 0.03% for the most recent fiscal year. The
index against which the Fund's performance is measured for purposes of
determining the performance incentive adjustment is the Lipper Large-Cap
Core Funds Index. See "Fund Management and Compensation" for more
information.
(e) Other expenses include an administrative services fee, a transfer agency
fee, a custody fee and other nonadvisory expenses and, for Class Y shares,
a shareholder service fee.
-- 2 --
Examples
These examples are intended to help you compare the cost of investing in the
Fund with the cost of investing in other mutual funds.
These examples assume that you invest $10,000 in the Fund for the time periods
indicated and then redeem all of your shares at the end of those periods. These
examples also assume that your investment has a 5% return each year and that the
Fund's operating expenses remain the same. Although your actual costs may be
higher or lower, based on these assumptions your costs would be:
1 year 3 years 5 years 10 years
Class A(a) $663 $849 $1,051 $1,634
Class B $672(b) $933(b) $1,119(b) $1,795(c)
Class C $272(b) $533 $ 919 $2,003
Class Y $ 77 $240 $ 418 $ 934
(a) Includes a 5.75% sales charge.
(b) Includes the applicable CDSC.
(c) Based on conversion of Class B shares to Class A shares in the ninth year of
ownership.
You would pay the following expenses if you did not redeem your shares:
1 year 3 years 5 years 10 years
Class A(a) $663 $849 $1,051 $1,634
Class B $172 $533 $ 919 $1,795(b)
Class C $172 $533 $ 919 $2,003
Class Y $ 77 $240 $ 418 $ 934
(a) Includes a 5.75% sales charge.
(b) Based on conversion of Class B shares to Class A shares in the ninth year of
ownership.
-- 3 --