Prospectus                                  [RIVERSOURCE INVESTMENTS(SM) LOGO]

RiverSource(SM)
Stock Fund

Prospectus Nov. 29, 2005

>  RiverSource Stock Fund (formerly AXP(R)Stock Fund) seeks to provide
   shareholders with current income and growth of capital.

As with all mutual funds, the Securities and Exchange Commission has not
approved or disapproved these securities or passed upon the adequacy of this
prospectus. Any representation to the contrary is a criminal offense.

You may qualify for sales charge discounts on purchases of Class A shares.
Please notify your financial advisor or investment professional if you have
other accounts holding shares of RiverSource funds to determine whether you
qualify for a sales charge discount. See "Buying and Selling Shares" for more
information.

Not FDIC Insured o May Lose Value o No Bank Guarantee



Table of Contents

The Fund                                            3p

Objective                                           3p

Principal Investment Strategies                     3p

Principal Risks                                     4p

Past Performance                                    5p

Fees and Expenses                                   8p

Other Investment Strategies and Risks               9p

Fund Management and Compensation                   11p

Buying and Selling Shares                          16p

Transactions Through Unaffiliated
   Financial Intermediaries                        16p

Valuing Fund Shares                                17p

Investment Options                                 17p

Purchasing Shares                                  19p

Sales Charges                                      22p

Exchanging/Selling Shares                          27p

Distributions and Taxes                            31p

Dividends and Capital Gain Distributions           31p

Reinvestments                                      31p

Taxes                                              32p

Master/Feeder Structure                            33p

Financial Highlights                               34p

CORPORATE REORGANIZATION

On Sept. 30, 2005, Ameriprise Financial, Inc. (Ameriprise Financial) (formerly
American Express Financial Corporation) was spun off to shareholders of its
parent corporation, American Express Company (American Express), and is now a
separate public company, trading under the ticker symbol AMP. Ameriprise
Financial provides administrative services to the Fund and is the parent company
of the Fund's investment manager, RiverSource Investments, LLC; the Fund's
distributor, Ameriprise Financial Services, Inc. (formerly American Express
Financial Advisors Inc.); the Fund's transfer agent, RiverSource Service
Corporation (formerly American Express Client Service Corporation); and the
Fund's custodian, Ameriprise Trust Company (formerly American Express Trust
Company). On Oct. 1, 2005, the Fund changed its name, such that it no longer
bears the AXP(R) brand. The Fund now bears the RiverSource(SM) brand. Ameriprise
Financial and its subsidiaries are no longer affiliated with American Express.

The Board of Trustees has approved the merger of RiverSource Stock Fund into
RiverSource Disciplined Equity Fund (formerly AXP(R) Quantitative Large Cap
Equity Fund). The merger is subject to approval by shareholders of RiverSource
Stock Fund. It is currently anticipated that proxy materials regarding the
merger will be distributed to shareholders in December 2005, and that a meeting
for shareholders to consider the merger will be held in February 2006.

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The Fund

OBJECTIVE

RiverSource Stock Fund (the Fund) seeks to provide shareholders with current
income and growth of capital. Because any investment involves risk, achieving
this objective cannot be guaranteed.

The Fund seeks to achieve its objective by investing all of its assets in a
master portfolio (Portfolio) rather than by directly investing in and managing
its own portfolio of securities. The Portfolio has the same objective and
investment policies as the Fund. The Fund's Board of Directors (Board) has
approved the withdrawal of the Fund's assets from the Portfolio, which is
expected to be completed in late 2005 or early 2006. After that date, the Fund
will invest directly in and manage its own portfolio of securities rather than
investing in the Portfolio. For more information, see "Master/Feeder Structure."

PRINCIPAL INVESTMENT STRATEGIES

The Fund's assets primarily are invested in common stocks and securities
convertible into common stocks. Under normal market conditions, at least 80% of
the Fund's net assets are invested in these securities. In pursuit of its income
objective, the Fund will invest in income-producing equity securities (such as
convertible securities and preferred stocks) and short-term debt instruments
(such as commercial paper). The Fund will provide shareholders with at least 60
days' notice of any change in the 80% policy.

In pursuit of the Fund's objective, the investment manager (RiverSource
Investments, LLC) uses two different approaches to the selection of equity
investments.

With respect to approximately 50% of the Fund's portfolio, the investment
manager uses a traditional stock selection methodology and chooses investments
by:

o  Considering opportunities and risks by reviewing overall market conditions
   and industry outlook.

o  Identifying market trends that the investment manager believes will lead to
   good long-term growth potential.

o  Identifying companies with strong, sustainable earnings growth based on:

   o effective management, as demonstrated by overall performance,

   o competitive market position, and

   o financial strength.

o  Focusing on those companies that the investment manager considers to be blue
   chips. Blue chip stocks are issued by companies with a market capitalization
   of at least $1 billion, an established management, a history of consistent
   earnings and a leading position within their respective industries.

o  Identifying investments that contribute to portfolio diversification.

o  Identifying income-producing securities.

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In evaluating whether to sell a security, the investment manager considers,
among other factors, whether:

   o The security is overvalued relative to other potential investments.

   o The security has reached the investment manager's price objective.

   o The company has met the investment manager's earnings and/or growth
     expectations.

   o Political, economic or other events could affect the company's performance.

With respect to approximately 50% of the Fund's portfolio, the investment
manager uses proprietary quantitative methods based on sophisticated statistical
analysis and chooses investments by:

The universe of stocks from which the investment manager selects the Fund's
investments will be those included in the Fund's benchmark, the Standard &
Poor's 500 Index (S&P 500 Index). Through extensive analysis of the domestic
equity markets, the investment manager has identified characteristics of certain
stocks that have historically outperformed their benchmarks. The Fund will hold
both growth and value stocks. Characteristics used to select stocks for the Fund
include:

o  Superior growth characteristics such as:

   o strong earnings growth,

   o positive earnings that exceed expectations published by third-party
     business analysts,

   o consistency of earnings, and

   o strong positive price trend.

o  Superior value characteristics based on analysis of current stock prices
   relative to estimates of future prices.

In selecting the stocks from the S&P 500 Index for the Fund's portfolio, the
investment manager employs a rigorous process for evaluating the relationship
between the risk associated with each security and its potential for positive
returns. This process includes factors such as:

o  Limits on positions relative to the benchmark through overweighting or
   underweighting.

o  Limits on sector and industry allocations relative to the benchmark.

o  Limits on size of holdings relative to market liquidity.

PRINCIPAL RISKS

Please remember that with any mutual fund investment you may lose money.
Principal risks associated with an investment in the Fund include:

Active Management Risk. The Fund is actively managed and its performance
therefore will reflect in part the ability of the portfolio managers to make
investment decisions that are suited to achieving the Fund's investment
objective. Due to its active management, the Fund could underperform other
mutual funds with similar investment objectives.

Issuer Risk. An issuer may perform poorly, and therefore, the value of its
stocks and bonds may decline. Poor performance may be caused by poor management
decisions, competitive pressures, breakthroughs in technology, reliance on
suppliers, labor problems or shortages, corporate restructurings, fraudulent
disclosures, or other factors.

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Market Risk. The market value of securities may fall or fail to rise. Market
risk may affect a single issuer, sector of the economy, industry, or the market
as a whole. The market value of securities may fluctuate, sometimes rapidly and
unpredictably. This risk is generally greater for small and mid-sized companies,
which tend to be more vulnerable to adverse developments. In addition, focus on
a particular style, for example, investment in growth or value securities, may
cause the Fund to underperform other mutual funds if that style falls out of
favor with the market. The quantitative methodology employed by the investment
manager has been extensively tested using historical securities market data, but
has only recently begun to be used to manage open-end mutual funds. There can be
no assurance that the methodology will enable the Fund to achieve its objective.

PAST PERFORMANCE

The following bar chart and table provide some illustration of the risks of
investing in the Fund by showing, respectively:

o  how the Fund's performance has varied for each full calendar year shown on
   the bar chart, and

o  how the Fund's average annual total returns compare to recognized indexes
   shown on the table.

Both the bar chart and the table assume that all distributions have been
reinvested. The performance of different classes varies because of differences
in sales charges and other fees and expenses. How the Fund has performed in the
past (before and after taxes) does not indicate how the Fund will perform in the
future. Performance reflects any fee waivers/expense caps in effect for the
periods reported. In the absence of such fee waivers/expense caps, performance
would have been lower. See "Fees and Expenses" for any current fee
waivers/expense caps.

Bar Chart. Class A share information is shown in the bar chart; the sales charge
for Class A shares is not reflected in the bar chart.

Table. The table shows total returns from hypothetical investments in Class A,
Class B, Class C and Class Y shares of the Fund. These returns are compared to
the indexes shown for the same periods. Past performance for Class Y for the
periods prior to March 20, 1995 may be calculated based on the performance of
Class A, adjusted to reflect differences in sales charges, but not differences
in annual Fund operating expenses. For purposes of the performance calculation
in the table we assumed:

o  the maximum sales charge for Class A shares,

o  sales at the end of the period and deduction of the applicable contingent
   deferred sales charge (CDSC) for Class B and Class C shares,

o  no sales charge for Class Y shares, and

o  no adjustments for taxes paid by an investor on the reinvested income and
   capital gains.

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5p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


After-Tax Returns

After-tax returns are shown only for Class A shares. After-tax returns for the
other classes will vary. After-tax returns are calculated using the highest
historical individual federal marginal income tax rate and do not reflect the
impact of state and local taxes. Actual after-tax returns will depend on your
tax situation and most likely will differ from the returns shown in the table.
If you hold your shares in a tax-deferred account, such as a 401(k) plan or an
IRA, the after-tax returns do not apply to you since you will not incur taxes
until you begin to withdraw from your account.

The return after taxes on distributions for a period may be the same as the
return before taxes for the same period if there were no distributions or if the
distributions were small. The return after taxes on distributions and sale of
Fund shares for a period may be greater than the return before taxes for the
same period if there was a tax loss realized on sale of Fund shares. The benefit
of the tax loss (since it can be used to offset other gains) may result in a
higher return.

[BAR CHART]

                            CLASS A SHARE PERFORMANCE
                            (based on calendar years)

+25.73% +19.41% +25.26% +19.28% +16.61% -7.40% -13.91% -22.23%  +26.21% +6.48%
  1995    1996    1997    1998     1999   2000    2001    2002    2003   2004

During the periods shown in the bar chart, the highest return for a calendar
quarter was +19.31% (quarter ended Dec. 31, 1998) and the lowest return for a
calendar quarter was -15.21% (quarter ended Sept. 30, 2002).

The 5.75% sales charge applicable to Class A shares of the Fund is not reflected
in the bar chart; if reflected, returns would be lower than those shown. The
performance of other classes may vary from that shown because of differences in
expenses.

The Fund's Class A year-to-date return at Sept. 30, 2005 was +4.27%.

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6p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS




Average Annual Total Returns (for periods ended Dec. 31, 2004)

                                                                                                 Since              Since
                                                        1 year       5 years    10 years    inception (B&Y)     inception (C)
RiverSource Stock:
   Class A
                                                                                                   
      Return before taxes                               +0.36%       -4.72%       +7.46%          N/A                N/A
      Return after taxes on distributions               -0.13%       -5.63%       +5.65%          N/A                N/A
      Return after taxes on distributions
      and sale of fund shares                           +0.22%       -4.35%       +5.72%          N/A                N/A
   Class B
      Return before taxes                               +0.67%       -4.66%        N/A         +6.84%(a)             N/A
   Class C
      Return before taxes                               +4.63%         N/A         N/A            N/A             -4.21%(b)
   Class Y
      Return before taxes                               +6.66%       -3.43%        N/A         +7.82%(a)             N/A
S&P 500 Index (reflects no deduction
for fees, expenses or taxes)                           +10.88%       -2.30%      +12.07%      +11.33%(c)          -2.46%(d)
Lipper Large-Cap Core Funds Index                       +8.29%       -2.98%      +10.26%       +9.68%(c)          -3.71%(d)


(a) Inception date is March 20, 1995.

(b) Inception date is June 26, 2000.

(c) Measurement period started April 1, 1995.

(d) Measurement period started July 1, 2000.

The Standard & Poor's 500 Index (S&P 500 Index), an unmanaged index of common
stocks, is frequently used as a general measure of market performance. The index
reflects reinvestment of all distributions and changes in market prices, but
excludes brokerage commissions or other fees.

The Lipper Large-Cap Core Funds Index includes the 30 largest large-cap core
funds tracked by Lipper Inc. The index's returns include net reinvested
dividends. The Fund's performance is currently measured against this index for
purposes of determining the performance incentive adjustment. See "Fund
Management and Compensation" for more information.

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7p   --   RIVERSOURCE STOCK FUND   --   2005 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)                             0.48%    0.48%   0.48%    0.48%
Distribution (12b-1) fees                      0.25%    1.00%   1.00%    0.00%
Other expenses(e)                              0.20%    0.23%   0.23%    0.29%
Total                                          0.93%    1.71%   1.71%    0.77%

(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 0.02% 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.

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8p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


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)                                   $664        $855      $1,061      $1,656
Class B                                      $674(b)     $939(b)   $1,129(b)   $1,817(c)
Class C                                      $274(b)     $539      $  929      $2,024
Class Y                                      $ 79        $246      $  429      $  958


(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)                                   $664        $855      $1,061      $1,656
Class B                                      $174        $539      $  929      $1,817(b)
Class C                                      $174        $539      $  929      $2,024
Class Y                                      $ 79        $246      $  429      $  958


(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.

OTHER INVESTMENT STRATEGIES AND RISKS

Other Investment Strategies. In addition to the principal investment strategies
previously described, the Fund may invest in other securities and may use other
investment strategies that are not principal investment strategies.
Additionally, the Fund may use derivatives (financial instruments where value
depends upon, or is derived from, the value of something else) such as futures,
options, and forward contracts, to produce incremental earnings, to hedge
existing positions and to increase flexibility. Just as with securities in which
the Fund invests directly, derivatives are subject to a number of risks,
including market, liquidity, interest rate and credit risk. In addition, gains
or losses involving derivatives may be substantial, because a relatively small
price movement in the underlying security, currency or index may result in a
substantial gain or loss for the Fund using derivatives. Even though the Fund's
policies permit the use of derivatives in this manner, the portfolio managers
are not required to use derivatives. For more information on strategies and
holdings, and the risks of such strategies, including other derivative
instruments that the Fund may use, see the Fund's SAI and its annual and
semiannual reports.

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Unusual Market Conditions. During unusual market conditions, the Fund may
temporarily invest more of its assets in money market securities than during
normal market conditions. Although investing in these securities would serve
primarily to avoid losses, this type of investing also could prevent the Fund
from achieving its investment objective. During these times, the portfolio
managers may make frequent securities trades that could result in increased
fees, expenses and taxes, and decreased performance.

Portfolio Turnover. Trading of securities may produce capital gains, which are
taxable to shareholders when distributed. Active trading may also increase the
amount of commissions or mark-ups paid to broker-dealers that the Fund pays when
it buys and sells securities. The Fund's historical portfolio turnover rate,
which measures how frequently the Fund buys and sells investments, is shown in
the "Financial Highlights."

Securities Transaction Commissions. Securities transactions involve the payment
by the Fund of brokerage commissions to broker-dealers, on occasion as
compensation for research or brokerage services (commonly referred to as "soft
dollars"), as the portfolio managers buy and sell securities for the Fund in
pursuit of its objective. A description of the policies governing the Fund's
securities transactions and the dollar value of brokerage commissions paid by
the Fund are set forth in the SAI. The brokerage commissions set forth in the
SAI do not include implied commissions or mark-ups (implied commissions) paid by
the Fund for principal transactions (transactions made directly with a dealer or
other counterparty), including most fixed income securities and certain
derivatives. In addition, brokerage commissions do not reflect other elements of
transaction costs, including the extent to which the Fund's purchase and sale
transactions may cause the market to move and change the market price for an
investment.

Although brokerage commissions and implied commissions are not reflected in the
expense table under "Fees and Expenses," they are reflected in the total return
of the Fund.

Directed Brokerage. The Fund's Board of Directors (Board) has adopted a policy
prohibiting the investment manager, or any subadviser, from considering sales of
shares of the Fund as a factor in the selection of broker-dealers through which
to execute securities transactions.

Additional information regarding securities transactions can be found in the
SAI.

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10p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


FUND MANAGEMENT AND COMPENSATION

Investment Manager

RiverSource Investments, LLC (the investment manager or RiverSource
Investments), 200 Ameriprise Financial Center, Minneapolis, Minnesota 55474, is
the investment manager to the RiverSource funds, and is a wholly owned
subsidiary of Ameriprise Financial, Inc. (Ameriprise Financial). Ameriprise
Financial is a financial planning and financial services company that has been
offering solutions for clients' asset accumulation, income management and
protection needs for more than 110 years. In addition to managing investments
for all of the RiverSource funds, RiverSource Investments manages investments
for itself and its affiliates. For institutional clients, RiverSource
Investments and its affiliates provide investment management and related
services, such as separate account asset management, institutional trust and
custody, and employee benefit plan administration, as well as other investment
products. For all of its clients, RiverSource Investments seeks to allocate
investment opportunities in an equitable manner. See the SAIfor more
information.

The Portfolio pays RiverSource Investments a fee for managing is assets. The
Fund pays its proportionate share of the fee. Under the Investment Management
Services Agreement (Agreement), the fee for the most recent fiscal year was
0.48% of the Portfolio's average daily net assets, including an adjustment under
the terms of a performance incentive arrangement. The adjustment is computed by
comparing the Fund's performance to the performance of an index of comparable
funds published by Lipper Inc. The index against which the Fund's performance is
currently measured for purposes of the performance incentive adjustment is the
Lipper Large-Cap Core Funds Index. In certain circumstances, the Fund's Board
may approve a change in the index. The maximum adjustment (increase or decrease)
is 0.12% of the Portfolio's average net assets on an annual basis. Under the
Agreement, the Portfolio also pays taxes, brokerage commissions, and nonadvisory
expenses. A discussion regarding the basis for the Board approving the Agreement
is available in the Fund's most recent shareholder report.

Portfolio Manager(s). The portfolio managers responsible for the day-to-day
management of the Portfolio are:

Dimitris J. Bertsimas, Senior Portfolio Manager

o  Managed the Portfolio since 2004.

o  Joined RiverSource Investments (previously American Express Financial
   Corporation (AEFC)) as a portfolio manager in 2002.

o  Co-founded Dynamic Ideas, LLC, a consulting firm specializing in the
   development of quantitative tools for the asset management industry, where he
   served as Managing Partner, 1999 to 2002. Currently, Boeing Professor of
   Operations Research, Sloan School of Management and the Operations Research
   Center, MIT.

o  Began investment career as a consultant to asset managers in 1993; became
   portfolio manager in 2002.

o  MS and Ph.D., MIT.

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Gina K. Mourtzinou, Portfolio Manager

o  Managed the Portfolio since 2004.

o  Joined RiverSource Investments (previously AEFC) as a portfolio manager in
   2002.

o  Co-founded Dynamic Ideas, LLC, a consulting firm specializing in the
   development of quantitative tools for the asset management industry, where
   she served as Vice President of Research and Analytics, 1999 to 2002.

o  Began investment career as a consultant to asset managers in 1996; became
   portfolio manager in 2002.

o  Ph.D., MIT.

Scott Mullinix, CFA, Associate Portfolio Manager

o  Managed the Portfolio since 2004.

o  Rejoined RiverSource Investments (previously AEFC) in 2004, having previously
   spent time with AEFC as portfolio manager, 2001 to 2002 and as an associate
   portfolio manager, 1999 to 2001.

o  Analyst, Deephaven Capital LLC, a domestic-based hedge fund firm, May 2002 to
   May 2004.

o  Began investment career in 1989.

o  MBA, University of Minnesota.

Mr. Mullinix provides direct day-to-day management of the portion of the Fund
based on traditional stock selection methodology, and Mr. Bertsimas and Ms.
Mourtzinou provide day-to-day management of the portion of the Fund based on
proprietary quantitative methods.

The SAI provides additional information about portfolio manager compensation,
management of other accounts and ownership of shares in the Fund.

Additional Services and Compensation

As described above, RiverSource Investments receives compensation for acting as
the Fund's investment manager. RiverSource Investments and its affiliates also
receive compensation for providing other services to the Fund.

Administration Services. Ameriprise Financial, 200 Ameriprise Financial Center,
Minneapolis, Minnesota 55474, provides or compensates others to provide
administrative services to the RiverSource funds. These services include
administrative, accounting, treasury, and other services. Fees paid by the Fund
for these services are included under "Other expenses" in the expense table
under "Fees and Expenses."

Custody Services. Ameriprise Trust Company, 200 Ameriprise Financial Center,
Minneapolis, Minnesota 55474 (the custodian or Ameriprise Trust Company),
provides custody services to all but a limited number of the RiverSource funds,
for which U.S. Bank National Association provides custody services. In addition,
Ameriprise Trust Company is paid for certain transaction fees and out-of-pocket
expenses incurred while providing services to the funds. Fees paid by the Fund
for these services are included under "Other expenses" in the expense table
under "Fees and Expenses."

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12p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Distribution Services. Ameriprise Financial Services, Inc., 70100 Ameriprise
Financial Center, Minneapolis, Minnesota 55474 (the distributor or Ameriprise
Financial Services), provides underwriting and distribution services to the
RiverSource funds. Under the Distribution Agreement and related distribution and
shareholder servicing plan(s), the distributor receives distribution and
shareholder servicing fees. The distributor pays a portion of these fees to
financial advisors and retains a portion of these fees to support its
distribution and shareholder servicing activity. For third party sales, the
distributor re-allows a portion of these fees to the financial intermediaries
that sell Fund shares and provide services to shareholders, and retains a
portion of these fees to support its distribution and shareholder servicing
activity. Fees paid by the Fund for these services are set forth under
"Distribution (12b-1) fees" in the expense table under "Fees and Expenses." More
information on how these fees are used is set forth under "Investment Options"
and in the SAI. The distributor also administers any sales charges paid by an
investor at the time of purchase or at the time of sale (deferred sales charge).
See "Shareholder Fees (fees paid directly from your investment)" under "Fees and
Expenses" for the scheduled sales charge of each share class. See "Buying and
Selling Shares" for variations in the scheduled sales charges, and for how these
sales charges are used by the distributor. See "Other Investment Strategies and
Risks" for Fund policy regarding directed brokerage.

Transfer Agency Services. RiverSource Service Corporation, 70100 Ameriprise
Financial Center, Minneapolis, Minnesota 55474 (the transfer agent or
RiverSource Service Corporation), provides or compensates others to provide
transfer agency services to the RiverSource funds. The RiverSource funds pay the
transfer agent a fee, which varies by share class, as set forth in the SAI and
reimburses the transfer agent for its out-of-pocket expenses incurred while
providing these transfer agency services to the funds. Fees paid by the Fund for
these services are included under "Other expenses" in the expense table under
"Fees and Expenses." RiverSource funds are primarily sold through Ameriprise
Financial Services which is allocated a portion of these fees for providing
services to Fund shareholders. RiverSource Service Corporation may also pay a
portion of these fees to other financial intermediaries that provide
sub-recordkeeping and other services to Fund shareholders.

The SAI provides additional information about the services provided and the fee
schedules for the agreements set forth above.

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13p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Payments to Financial Intermediaries

RiverSource Investments and its affiliates may make additional cash payments out
of their own resources to financial intermediaries, such as broker-dealers,
banks, qualified plan administrators and recordkeepers, or other institutions,
including inter-company allocation of resources to affiliated broker-dealers
such as Ameriprise Financial Services (financial intermediaries) in connection
with the sale of shares of the Fund and/or the provision of services to the Fund
or its shareholders. These payments may create an incentive for the financial
intermediary, its employees or registered representatives to recommend or sell
shares of the Fund to its customers. These payments and inter-company
allocations are in addition to any 12b-1 distribution and/or shareholder service
fees or other amounts paid by the Fund under distribution or shareholder
servicing plans, or paid by the Fund for shareholder account maintenance,
sub-accounting or recordkeeping services provided directly by the financial
intermediary providing such services. In exchange for these payments and
inter-company allocations, RiverSource Investments and its affiliates may
receive preferred access to registered representatives of a financial
intermediary (for example, the ability to make presentations in branch offices
or at conferences) or preferred access to customers of the financial
intermediary (for example, the ability to advertise or directly interact with
the financial intermediary's customers in order to sell the Fund). These
arrangements are sometimes referred to as "revenue sharing payments." In some
cases, these arrangements may create an incentive for a financial intermediary
or its representatives to recommend or sell shares of a fund and may create a
conflict of interest between a financial intermediary's financial interest and
its duties to its customers. Please contact the financial intermediary through
which you are purchasing shares of the Fund for details about any payments it
may receive in connection with the sale of Fund shares or the provision of
services to the Fund.

These payments and inter-company allocations are usually calculated based on a
percentage of fund sales, and/or as a percentage of fund assets attributable to
a particular financial intermediary. These payments may also be negotiated based
on other criteria or factors including, but not limited to, the financial
intermediary's affiliation with the investment manager, its reputation in the
industry, its ability to attract and retain assets, its access to target
markets, its customer relationships and the scope and quality of services it
provides. The amount of payment or inter-company allocation may vary by
financial intermediary and by type of sale (e.g., purchases of different share
classes or purchases of the Fund through a qualified plan or through a wrap
program), and may be significant.

From time to time, RiverSource Investments and its affiliates may make other
payments, including non-cash compensation, to financial intermediaries or their
representatives in the form of gifts of nominal value, occasional meals,
tickets, or other entertainment, support for due diligence trips, training and
educational meetings or conference sponsorships, support for recognition
programs, and other forms of non-cash compensation permissible under regulations
to which these financial intermediaries and their representatives are subject.

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14p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Additional Management Information

Manager of Manager Exemption. The Fund operates under an order from the
Securities and Exchange Commission that permits RiverSource Investments, subject
to the approval of the Board, to appoint a subadviser or change the terms of a
subadvisory agreement for the Fund without first obtaining shareholder approval.
The order permits the Fund to add or change unaffiliated subadvisers or the fees
paid to subadvisers from time to time without the expense and delays associated
with obtaining shareholder approval of the change.

Affiliated Funds-of-Funds. RiverSource Investments also serves as investment
manager to the RiverSource Portfolio Builder Funds (Portfolio Builder Funds), a
group of six funds-of-funds that provide asset-allocation services to
shareholders by investing in shares of other RiverSource funds, including the
Fund. The Fund may experience relatively large purchases or redemptions from the
Portfolio Builder Funds. Although RiverSource Investments seeks to minimize the
impact of these transactions by structuring them over a reasonable period of
time, the Fund may experience increased expenses as it buys and sells securities
to manage transactions for the Portfolio Builder Funds. In addition, because the
Portfolio Builder Funds may own a substantial portion of the Fund, a redemption
by the Portfolio Builder Funds could cause the Fund's expense ratio to increase
as the Fund's fixed costs would be spread over a smaller asset base. RiverSource
Investments monitors expense levels and is committed to offering funds that are
competitively priced. RiverSource Investments will report to the Fund's Board on
the steps it has taken to manage any potential conflicts.

Fund Holdings Disclosure. The Fund's Board has adopted policies and procedures
that govern the timing and circumstances of disclosure to shareholders and third
parties of information regarding the securities owned by the Fund. A description
of these policies and procedures is included in the Fund's SAI.

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15p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Buying and Selling Shares

TRANSACTIONS THROUGH UNAFFILIATED FINANCIAL INTERMEDIARIES

Where authorized by the distributor, shares of the Fund may be available through
certain 401(k) or other qualified plans, banks, broker-dealers or other
institutions (financial intermediaries). These financial intermediaries may
charge you additional fees for the services they provide and they may have
different policies not described in this prospectus. Some policy differences may
include different minimum investment amounts, exchange privileges, fund choices
and cutoff times for investments. Additionally, recordkeeping, transaction
processing and payments of distributions relating to your account may be
performed by the financial intermediaries or their representatives through whom
shares are held. Since the Fund may not have a record of your transactions, you
should always contact the financial intermediary through whom you purchased the
Fund to make changes to or give instructions concerning your account or to
obtain information about your account. The Fund and the distributor are not
responsible for the failure of one of these financial intermediaries to carry
out its obligations to its customers.

Availability and Transferability of Fund Shares. Please consult your investment
professional or financial intermediary to determine availability of the Fund.
Currently, RiverSource funds may be purchased or sold through affiliated
broker-dealers of RiverSource Investments, including Ameriprise Financial
Services and Securities America, Inc. (Securities America) and through a limited
number of unaffiliated institutions. If you set up an account at another
financial intermediary, you will not be able to transfer RiverSource fund
holdings to that account unless that institution has obtained a selling
agreement with the distributor of the RiverSource funds. If you set up an
account with an unaffiliated financial intermediary that does not have and is
unable to obtain, such a selling agreement, you must either maintain your
position with Ameriprise or sell your shares, paying any applicable deferred
sales charge. Please be aware that transactions in taxable accounts would
generate a taxable event and may result in an increased income tax liability.

For more information, please call RiverSource Service Corporation at (888)
791-3380.

The public offering price for Class A shares of the Fund is the net asset value
(NAV) plus a sales charge, and for Class B, C, and Y shares, the NAV. Orders in
good form are priced at the NAV next determined after you place your order. Good
form or good order means that your instructions have been received in the form
required by the distributor. This may include, for example, providing the fund
name and account number, the amount of the transaction and all required
signatures. For more information, refer to the sections on "Purchasing Shares"
and "Exchanging/Selling Shares," or contact your financial advisor or investment
professional. If you buy or sell shares through an authorized financial
intermediary, consult that firm to determine its procedures for accepting and
processing orders. The financial intermediary may charge a fee for its services.

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16p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


VALUING FUND SHARES

The NAV is the value of a single share of the Fund. The NAV is determined by
dividing the value of the Fund's assets, minus any liabilities, by the number of
shares outstanding. The NAV is calculated as of the close of business on the New
York Stock Exchange (NYSE), normally 4:00 p.m. Eastern time, on each day that
the NYSE is open. The Fund's securities are valued primarily on the basis of
market quotations obtained from outside pricing services approved and monitored
under procedures adopted by the Board. Certain short-term securities with
maturities of 60 days or less are valued at amortized cost.

When reliable market quotations are not readily available, securities are priced
at fair value based on procedures adopted by the Board. These procedures are
also used when the value of a security held by the Fund is materially affected
by events that occur after the close of the primary market on which the security
is traded but prior to the time as of which the Fund's NAV is determined.
Valuing securities at fair value involves reliance on judgment. The fair value
of a security is likely to differ from any available quoted or published price.

Foreign investments are valued in U.S. dollars. Some of the Fund's securities
may be listed on foreign exchanges that trade on weekends or other days when the
Fund does not price its shares. In that event, the NAV of the Fund's shares may
change on days when shareholders will not be able to purchase or sell the Fund's
shares.

INVESTMENT OPTIONS

1. Class A shares are sold to the public with a sales charge at the time of
   purchase and an annual distribution and shareholder servicing (12b-1) fee of
   0.25%.

2. Class B shares are sold to the public with a contingent deferred sales charge
   (CDSC) and an annual distribution and shareholder servicing (12b-1) fee of
   1.00%.

3. Class C shares are sold to the public without a sales charge at the time of
   purchase and with an annual distribution and shareholder servicing (12b-1)
   fee of 1.00%. Class C shares redeemed within one year after purchase may be
   subject to a CDSC.

4. Class Y shares are sold to qualifying institutional investors without a sales
   charge or distribution fee, but with a separate shareholder servicing fee of
   0.10%. Please see the SAI for information on eligibility requirements to
   purchase Class Y shares.

The distribution and shareholder servicing fees for Class A, Class B and Class C
shares are subject to the requirements of Rule 12b-1 under the Investment
Company Act of 1940, as amended, and are used to reimburse the distributor for
certain expenses it incurs in connection with distributing the Fund's shares and
providing services to Fund shareholders. These expenses include payment of
distribution and shareholder servicing fees to financial intermediaries that
sell shares of the Fund. Financial intermediaries receive shareholder servicing
fees equal to 0.25% of the average daily net assets of Class A, Class B and
Class C shares sold and held through them. For Class A and Class B shares, the
distributor begins to pay these fees immediately after purchase. For Class C
shares, the distributor begins to pay these fees one year after purchase.
Financial intermediaries also receive distribution fees equal to 0.75% of the
average daily net assets of Class C shares sold and held through them, which the
distributor begins to pay one year after purchase. For Class B shares, the
Fund's distributor retains the 0.75% distribution fee in order to finance the
payment of sales commissions to financial

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17p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


intermediaries that sell Class B shares, and to pay for other distribution
related expenses. Financial intermediaries may compensate their financial
advisors and investment professionals with the shareholder servicing and
distribution fees paid to them by the distributor.

The shareholder servicing fees for Class Y shares are used to reimburse the
distributor for providing services and assistance to shareholders regarding
ownership of their shares or their accounts.

The Fund also offers an additional class of shares, Class I, exclusively to
certain institutional investors. Class I shares are made available through a
separate prospectus supplement provided to investors eligible to purchase the
shares.

Investment options summary

The Fund offers different classes of shares. There are differences among the
fees and expenses for each class. Not everyone is eligible to buy every class.
After determining which classes you are eligible to buy, decide which class best
suits your needs. Your financial advisor or investment professional can help you
with this decision.

The following table shows the key features of each class:

                  Class A          Class B         Class C       Class Y
- ----------------- ---------------- --------------- ------------- ---------------
Availability      Available to     Available to    Available     Limited to
                  all investors.   all investors.  to all        qualifying
                                                   investors.    institutional
                                                                 investors.
- ----------------- ---------------- --------------- ------------- ---------------
Initial Sales     Yes. Payable     No. Entire      No. Entire    No. Entire
Charge            at time of       purchase        purchase      purchase
                  purchase.        price is        price is      price is
                  Lower sales      invested in     invested in   invested in
                  charge for       shares of the   shares of     shares of the
                  larger           Fund.           the Fund.     Fund.
                  investments.
- ----------------- ---------------- --------------- ------------- ---------------

Deferred Sales    On purchases     Maximum 5%      1% CDSC may   None.
Charge            over             CDSC during     apply if
                  $1,000,000, 1%   the first       you sell
                  CDSC may apply   year            your shares
                  if you sell      decreasing to   within one
                  your shares      0% after six    year after
                  within one       years.          purchase.
                  year after
                  purchase.
- ----------------- ---------------- --------------- ------------- ---------------
12b-1             Yes. 0.25%       Yes. 1.00%      Yes. 1.00%    Yes. 0.10%
Distribution
Fee and/or
Shareholder
Service Fee*
- ----------------- ---------------- --------------- ------------- ---------------
Conversion to     N/A              Yes,            No.           No.
Class A                            automatically
                                   in ninth year
                                   of ownership.
- ----------------- ---------------- --------------- ------------- ---------------

*  The Fund has adopted a plan under Rule 12b-1 of the Investment Company Act of
   1940, as amended, that allows it to pay distribution and shareholder
   servicing-related expenses for the sale of Class A, Class B and Class C
   shares. The Fund has also adopted a separate shareholder servicing plan to
   pay for servicing-related expenses related to Class Y shares. Because these
   fees are paid out of the Fund's assets on an on-going basis, over time, these
   fees will increase the cost of your investment and may cost you more than
   paying other types of distribution (sales) or servicing charges.

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18p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Should you purchase Class A, Class B or Class C shares?

If your investments in RiverSource funds total $100,000 or more, Class A shares
may be the better option because the sales charge is reduced for larger
purchases. If you qualify for a waiver of the sales charge, Class A shares will
be the best option.

If you invest less than $100,000, consider how long you plan to hold your
shares. Class B shares have a higher annual distribution fee than Class A shares
and a CDSC for six years. Class B shares convert to Class A shares in the ninth
year of ownership. Class B shares purchased through reinvested dividends and
distributions also will convert to Class A shares in the same proportion as the
other Class B shares.

Class C shares also have a higher annual distribution fee than Class A shares.
Class C shares have no sales charge if you hold the shares for longer than one
year. Unlike Class B shares, Class C shares do not convert to Class A. As a
result, you will pay a 1% distribution fee for as long as you hold Class C
shares. If you choose a deferred sales charge option (Class B or Class C), you
should consider the length of time you intend to hold your shares. To help you
determine which investment is best for you, consult your financial advisor or
investment professional.

For more information, see the SAI.

PURCHASING SHARES

Financial intermediaries are required by law to obtain certain personal
information from each person who opens an account in order to verify the
identity of the person. As a result, when you open an account you will be asked
to provide your name, permanent street address, date of birth, and Social
Security or Employer Identification number. You may also be asked for other
identifying documents or information. If you do not provide this information,
the Fund, or the financial intermediary through which you are investing in the
Fund, may not be able to open an account for you. If the Fund or if the
financial intermediary through which you are investing in the Fund is unable to
verify your identity, your account may be closed, or other steps may be taken,
as deemed appropriate.

To purchase shares with a financial intermediary other than Ameriprise Financial
Services, please consult your financial intermediary. See "Transactions Through
Unaffiliated Financial Intermediaries" for more information. The following
section explains RiverSource funds policies and how you can purchase Fund shares
from Ameriprise Financial Services.

If you do not have an existing RiverSource fund account with Ameriprise
Financial Services, you will need to establish a brokerage account. Your
financial advisor or investment professional will help you fill out and submit
an application. Once your account is set up, you can choose among several
convenient ways to invest.

When you purchase, your order will be priced at the next NAV calculated after
your order is accepted by the Fund. If your application does not specify which
class of shares you are purchasing, we will assume you are investing in Class A
shares.

Important: When you open an account, you must provide your correct Taxpayer
Identification Number (TIN), which is either your Social Security or Employer
Identification number.

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19p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


If you do not provide and certify the correct TIN, you could be subject to
backup withholding of 28% of taxable distributions and proceeds from certain
sales and exchanges. You also could be subject to further penalties, such as:

o  a $50 penalty for each failure to supply your correct TIN,

o  a civil penalty of $500 if you make a false statement that results in no
   backup  withholding, and

o  criminal penalties for falsifying information.

You also could be subject to backup withholding, if the IRS notifies us to do
so, because you failed to report required interest or dividends on your tax
return.

How to determine the correct TIN

For this type of account:       Use the Social Security or Employer
                                Identification number of:
- ------------------------------- -------------------------------------------
Individual or joint account     The individual or one of the owners
                                listed on the joint account
- ------------------------------- -------------------------------------------
Custodian account of a minor    The minor
(Uniform Gifts/Transfers to
Minors Act)
- ------------------------------- -------------------------------------------
A revocable living trust        The grantor-trustee (the person who puts
                                the money into the trust)
- ------------------------------- -------------------------------------------
An irrevocable trust, pension   The legal entity (not the personal
trust or estate                 representative or trustee, unless no
                                legal entity is designated in the account
                                title)
- ------------------------------- -------------------------------------------
Sole proprietorship or          The owner
single-owner LLC
- ------------------------------- -------------------------------------------
Partnership or multi-member     The partnership
LLC
- ------------------------------- -------------------------------------------

Corporate or LLC electing       The corporation
corporate status  on Form 8832

- ------------------------------- -------------------------------------------
Association, club or            The organization
tax-exempt organization
- ------------------------------- -------------------------------------------

For details on TIN requirements, contact your financial advisor or investment
professional to obtain a copy of Form W-9, "Request for Taxpayer Identification
Number and Certification." You also may obtain the form on the Internet at
www.irs.gov.

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20p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Methods of purchasing shares

By mail

Once your account has been established, send your check to:

Ameriprise Financial Services
70200 Ameriprise Financial Center
Minneapolis, MN 55474

Minimum amounts
Initial investment:                 $2,000*
Additional investments:             $500**
Account balances:                   $300
Qualified account balances:         none

If your Fund account balance falls below $300 for any reason, including a market
decline, you will be asked to increase it to $300 or establish a scheduled
investment plan. If you do not do so within 30 days, your shares may be
automatically redeemed and the proceeds mailed to you.

  *  $1,000 for tax qualified accounts.

 **  $100 minimum add-on for existing mutual fund accounts outside of a
     brokerage account.

By scheduled investment plan

Minimum amounts
Initial investment:                 $2,000*
Additional investments:             $100**
Account balances:                   none (on a scheduled investment plan with
                                    monthly payments)

If your Fund account balance is below $2,000, you must make payments at least
monthly.

  *  $100 for accounts outside of a brokerage account.

 **  $50 minimum per payment for qualified accounts outside of a brokerage
     account.

By wire or electronic funds transfer

Please contact your financial advisor or investment professional for specific
instructions.

Minimum wire purchase amount: $1,000 or new account minimum, as applicable.

By telephone

If you have a brokerage account, you may use the money in your account to make
initial and subsequent purchases.

To place your order, call:

(800) 297-7378 for brokerage accounts

(800) 967-4377 for wrap accounts

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21p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


SALES CHARGES

Class A -- initial sales charge alternative

Your purchase price for Class A shares is generally the NAV plus a front-end
sales charge. Sales charges vary depending on the amount of your purchase. The
distributor receives the sales charge and re-allows a portion of the sales
charge to the financial intermediary through which you purchased the shares. The
distributor retains the balance of the sales charge. Sales charge* for Class A
shares:



                                                                    As a % of            Maximum re-allowance
Total market value          As a % of purchase price**         net amount invested     as a % of purchase price
                                                                                       
Up to $49,999                          5.75%                          6.10%                     5.00%
$50,000-$99,999                        4.75                           4.99                      4.00
$100,000-$249,999                      3.50                           3.63                      3.00
$250,000-$499,999                      2.50                           2.56                      2.15
$500,000-$999,999                      2.00                           2.04                      1.75
$1,000,000 or more***                  0.00                           0.00                      0.00


  *  Because of rounding in the calculation of the offering price, the portion
     of the sales charge retained by the distributor may vary and the actual
     sales charge you pay may be more or less than the sales charge calculated
     using these percentages.

 **  Offering price includes the sales charge.

***  Although there is no sales charge for purchases with a total market value
     over $1,000,000, and therefore no re-allowance, the distributor may pay a
     sales commission to a financial intermediary making a sale with a total
     market value of $1,000,000 to $3,000,000, a sales commission up to 1.00%;
     $3,000,000 to $10,000,000, a sales commission up to 0.50%; and $10,000,000
     or more, a sales commission up to 0.25%.

Rights of Accumulation

You may be able to reduce the sales charge on Class A shares, based on the
combined market value of your accounts.

The current market values of the following investments are eligible to be added
together for purposes of determining the sales charge on your purchase:

o  Your current investment in this Fund, and

o  Previous investments you and members of your primary household group have
   made in Class A, Class B or Class C shares in this and other RiverSource
   funds, provided your investment was subject to a sales charge.

   o Your primary household group consists of you, your spouse or domestic
     partner, and your unmarried children under age 21 sharing a mailing
     address. For purposes of this policy a domestic partner is an individual
     who shares your primary residence and with whom you own joint property. If
     you or any member of your primary household group elects to separate from
     the primary household group (for example, by asking that account statements
     be sent to separate addresses), your assets will no longer be combined for
     purposes of reducing your sales charge.

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22p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


The following accounts are eligible to be included in determining the sales
charge on your purchase:

o  Individual or joint accounts held outside of a brokerage account;

o  Individual or joint accounts held through a brokerage account;

o  Roth and traditional IRAs, SEPs, SIMPLEs and TSCAs, provided they are
   invested in Class A, Class B or Class C shares that are subject to a sales
   charge;

o  UGMA/UTMA accounts for which you, your spouse, or your domestic partner is
   parent or guardian of the minor child;

o  Revocable trust accounts for which you or a member of your primary household
   group, individually, is the beneficiary;

o  Accounts held in the name of your, your spouse's, or your domestic partner's
   sole proprietorship or single owner limited liability company or S
   corporation; and

o  Qualified retirement plan assets, provided that you are the sole owner of the
   business sponsoring the plan, are the sole participant (other than a spouse)
   in the plan, and have no intention of adding participants to the plan.

The following accounts are not eligible to be included in determining the sales
charge on your purchase:

o  Accounts of pension and retirement plans with multiple participants, such as
   401(k) plans (which are combined to reduce the sales charge for the entire
   pension or retirement plan and therefore are not used to reduce the sales
   charge for your individual accounts);

o  Investments in Class A shares where the sales charge is waived, for example,
   purchases through wrap accounts, including Ameriprise Strategic Portfolio
   Service Advantage (SPS);

o  Investments in Class D, Class E, or Class Y shares;

o  Investments in 529 plans, donor advised funds, variable annuities, variable
   life insurance products, wrap accounts or managed separate accounts; and

o  Charitable and irrevocable trust accounts.

If you purchase RiverSource fund shares through different channels or different
financial intermediaries, and you want to include those assets toward a reduced
sales charge, you must inform Ameriprise Financial Services, your financial
advisor or investment professional in writing about the other accounts when
placing your purchase order. When placing your purchase order, you must provide
your most recent account statement and contact information regarding the other
accounts. A financial intermediary other than Ameriprise Financial Services may
require additional information.

Unless you provide Ameriprise Financial Services, your financial advisor or your
investment professional in writing with information about all of the accounts
that may count toward a sales charge reduction, there can be no assurance that
you will receive all of the reductions for which you may be eligible.

For more information on rights of accumulation, please see the SAI.

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23p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Letter of Intent (LOI)

Generally, if you intend to invest $50,000 or more over a period of 13 months,
you may be able to reduce the front-end sales charges for investments in Class A
shares by completing and filing a LOI form. The LOI becomes effective only after
the form is processed in good order by the distributor. An LOI can be backdated
up to a maximum of 90 days. If the LOI is backdated, you may include prior
investments in Class A shares that were charged a front-end sales load toward
the LOI commitment amount. If the LOI is backdated, the 13 month period begins
on the date of the earliest purchase included in the LOI.

Holdings More than 90 Days Old. Purchases made more than 90 days before your LOI
is processed by the distributor will not be counted towards the commitment
amount of the LOI and cannot be used as the starting point for the LOI. While
these purchases cannot be included in an LOI, they may help you obtain a reduced
sales charge on future purchases as described in "Rights of Accumulation."

Notification Obligation. If purchasing shares in a brokerage account or through
a financial intermediary, you must request the reduced sales charge when you buy
shares. If you do not complete and file the LOI form, or do not request the
reduced sales charge at the time of purchase, you will not be eligible for the
reduced sales charge.

For more details on LOIs, please contact your financial advisor, investment
professional or see the SAI.

Waivers of the sales charge for Class A shares

Sales charges do not apply to:

o  current or retired Board members, officers or employees of the Fund or
   Ameriprise Financial or its subsidiaries, their spouses or domestic partners,
   children and parents.

o  current or retired Ameriprise Financial Services financial advisors,
   employees of financial advisors, their spouses or domestic partners, children
   and parents.

o  portfolio managers employed by subadvisors of the RiverSource funds,
   including their spouses or domestic partners, children and parents.

o  registered representatives and other employees of financial intermediaries
   having a sub-distribution agreement with the distributor, including their
   spouses, domestic partners, children and parents.

o  qualified employee benefit plans offering participants daily access to
   RiverSource funds. Eligibility must be determined in advance. For assistance,
   please contact your financial advisor or investment professional.
   Participants in certain qualified plans where the initial sales charge is
   waived may be subject to a deferred sales charge of up to 4%.

o  shareholders who have at least $1 million in RiverSource funds. If the
   investment is sold within one year after purchase, a CDSC of 1% may be
   charged.

o  direct rollovers from Ameriprise Retirement Services, provided that the
   rollover involves a transfer of Class Y shares in this Fund to Class A shares
   in this Fund.

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24p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


o  purchases made:

   o with dividend or capital gain distributions from this Fund or from the same
     class of another RiverSource fund,

   o through or under a wrap fee product or other investment product sponsored
     by the distributor or another authorized broker-dealer, investment advisor,
     bank or investment professional,

   o within a segregated separate account offered by Nationwide Life Insurance
     Company or Nationwide Life and Annuity Insurance Company,

   o through American Express Personal Trust Services' Asset-Based pricing
     alternative, provided by American Express Bank, FSB.

o  shareholders whose original purchase was in a Strategist fund merged into a
   RiverSource fund in 2000.

Policies related to reducing or waiving the sales charge may be modified or
withdrawn at any time.

Unless you provide Ameriprise Financial Services, your financial advisor or
investment professional with information in writing about all of the factors
that may count toward a waiver of the sales charge, there can be no assurance
that you will receive all of the waivers for which you may be eligible.

You also may view this information about sales charges and breakpoints free of
charge on the Fund's website. Go to www.riversource.com/roa and click on the
hyperlink "Sales Charge Discount Information."

Class B and Class C -- contingent deferred sales charge (CDSC) alternative

For Class B, the CDSC is based on the sale amount and the number of years --
including the year of purchase -- between purchase and sale. The following table
shows how CDSC percentages on sales decline:

If the sale is made during the:             The CDSC percentage rate is:*
First year                                               5%
Second year                                              4%
Third year                                               4%
Fourth year                                              3%
Fifth year                                               2%
Sixth year                                               1%
Seventh year                                             0%

*  Because of rounding in the calculation, the portion of the CDSC retained by
   the distributor may vary and the actual CDSC you pay may be more or less than
   the CDSC calculated using these percentages.

Although there is no front-end sales charge when you buy Class B shares, the
distributor pays a sales commission of 4% to financial intermediaries that sell
Class B shares. A portion of this commission may, in turn, be paid to your
financial advisor. The distributor receives any CDSC imposed when you sell your
Class B shares.

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25p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Purchases made prior to May 21, 2005 age on a calendar year basis. Purchases
made beginning May 21, 2005 age on a daily basis. For example, a purchase made
on Nov. 12, 2004 will complete its first year on Dec. 31, 2004 under calendar
year aging. However, a purchase made on Nov. 12, 2005 will complete its first
year on Nov. 11, 2006 under daily aging.

For Class B shares purchased prior to May 21, 2005, those shares will convert to
Class A shares in the ninth calendar year of ownership. For Class B shares
purchased beginning May 21, 2005, those shares will convert to Class A shares
one month after the completion of the eighth year of ownership.

For Class C, a 1% CDSC may be charged if you sell your shares within one year
after purchase. Although there is no front-end sales charge when you buy Class C
shares, the distributor pays a sales commission of 1% to financial
intermediaries that sell Class C shares. A portion of this commission may, in
turn, be paid to your financial advisor. The distributor receives any CDSC
imposed when you sell your Class C shares.

For both Class B and Class C, if the amount you sell causes the value of your
investment to fall below the cost of the shares you have purchased, the CDSC
will be based on the lower of the cost of those shares purchased or market
value. Because the CDSC is imposed only on sales that reduce your total purchase
payments, you do not have to pay a CDSC on any amount that represents
appreciation in the value of your shares, income earned by your shares, or
capital gains.

In addition, the CDSC on your sale, if any, will be based on your oldest
purchase payment. The CDSC on the next amount sold will be based on the next
oldest purchase payment.

Example

Assume you had invested $10,000 in Class B shares and that your investment had
appreciated in value to $12,000 after 3 1/2 years, including reinvested
dividends and capital gain distributions. You could sell up to $2,000 worth of
shares without paying a CDSC ($12,000 current value less $10,000 purchase
amount). If you sold $2,500 worth of shares, the CDSC would apply to the $500
representing part of your original purchase price. The CDSC rate would be 3%
because the sale was made during the fourth year after the purchase.

Waivers of the CDSC for Class B shares

The CDSC will be waived on sales of shares:

o  in the event of the shareholder's death,

o  held in trust for an employee benefit plan, or

o  held in IRAs or certain qualified plans if Ameriprise Trust Company is the
   custodian, such as Keogh plans, tax-sheltered custodial accounts or corporate
   pension plans, provided that the shareholder is:

   o at least 59 1/2 years old AND

   o taking a retirement distribution (if the sale is part of a transfer to an
     IRA or qualified plan, or a custodian-to-custodian transfer, the CDSC will
     not be waived) OR

   o selling under an approved substantially equal periodic payment
     arrangement.

Waivers of the CDSC for Class C shares

The CDSC will be waived on sales of shares in the event of the shareholder's
death.

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26p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


EXCHANGING/SELLING SHARES

To sell or exchange shares held with financial intermediaries other than
Ameriprise Financial Services, please consult your financial intermediary. See
"Transactions Through Unaffiliated Financial Intermediaries" for more
information. The following section explains policies of the RiverSource funds on
how you can exchange or sell shares held with Ameriprise Financial Services.

Exchanges

You may exchange your Fund shares at no charge for shares of the same class of
any other publicly offered RiverSource fund. Exchanges into RiverSource
Tax-Exempt Money Market Fund may only be made from Class A shares. For complete
information on the other fund, including fees and expenses, read that fund's
prospectus carefully. Your exchange will be priced at the next NAV calculated
after your transaction request is received in good order.

Market timing is frequent or short-term trading by certain shareholders intended
to profit at the expense of other shareholders by selling shares of a fund
shortly after purchase. Market timing may adversely impact a fund's performance
by preventing the investment manager from fully investing the assets of the
fund, diluting the value of shares held by long-term shareholders, or increasing
the fund's transaction costs.

See "Valuing Fund Shares" for a discussion of the Fund's policy on fair value
pricing, which is intended, in part, to reduce the frequency and effect of
market timing.

The Fund's Board has adopted a policy that is designed to detect and deter
market timing. The Fund seeks to enforce this policy as follows:

o  The Fund tries to distinguish market timing from trading that it believes is
   not harmful, such as periodic rebalancing for purposes of asset allocation or
   dollar cost averaging. Under the Fund's procedures, there is no set number of
   transactions in the Fund that constitutes market timing. Even one purchase
   and subsequent sale by related accounts may be market timing. Generally, the
   Fund seeks to restrict the exchange privilege of an investor who makes more
   than three exchanges into or out of the Fund in any 90-day period. Accounts
   held by a retirement plan an institution for the benefit of its participants
   or clients, which typically engage in daily transactions, are not subject to
   this limit. The Fund seeks the assistance of financial intermediaries in
   applying similar restrictions on the sub-accounts of their participants or
   clients.

o  If an investor's trading activity is determined to be market timing or
   otherwise harmful to existing shareholders, the Fund reserves the right to
   modify or discontinue the investor's exchange privilege or reject the
   investor's purchases or exchanges, including purchases or exchanges accepted
   by a financial intermediary. The Fund may treat accounts it believes to be
   under common control as a single account for these purposes, although it may
   not be able to identify all such accounts.

o  Although the Fund does not knowingly permit market timing, it cannot
   guarantee that it will be able to identify and restrict all short-term
   trading activity. The Fund receives purchase and sale orders through
   financial intermediaries where market timing activity may not always be
   successfully detected.

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27p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Other exchange policies:

o  Exchanges must be made into the same class of shares of the new fund.

o  If your exchange creates a new account, it must satisfy the minimum
   investment amount for new purchases.

o  Once we receive your exchange request, you cannot cancel it.

o  Shares of the new fund may not be used on the same day for another exchange.

o  If your shares are pledged as collateral, the exchange will be delayed until
   written approval is received from the secured party.

Selling Shares

You may sell your shares at any time. The payment will be mailed within seven
days after your request is received in good order.

When you sell shares, the amount you receive may be more or less than the amount
you invested. Your sale price will be the next NAV calculated after your request
is received in good order, minus any applicable CDSC.

Repurchases. You can change your mind after requesting a sale and use all or
part of the proceeds to purchase new shares in the same account from which you
sold. If you reinvest in Class A, you will purchase the new shares at NAV rather
than the offering price on the date of a new purchase. If you reinvest in Class
B or Class C, any CDSC you paid on the amount you are reinvesting also will be
reinvested. To take advantage of this waiver, you must send a written request
within 90 days of the date your sale request was processed and include your
account number. This privilege may be limited or withdrawn at any time and use
of this option may have tax consequences.

The Fund reserves the right to redeem in kind.

For more details and a description of other sales policies, please see the SAI.

If you decide to sell your shares within 30 days of a telephoned-in address
change, a written request is required.

Important: Payments sent by a bank authorization, check or money order that are
not guaranteed may take up to ten days to clear. This may cause your scheduled
arrangement or unscheduled request to fail to process if the requested amount
includes unguaranteed funds.

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28p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Ways to request an exchange or sale of shares

By regular or express mail

Ameriprise Financial Services
70200 Ameriprise Financial Center
Minneapolis, MN 55474

Include in your letter:

o  your account number

o  the name of the fund(s)

o  the class of shares to be exchanged or sold

o  your Social Security number or Employer Identification number

o  the dollar amount or number of shares you want to exchange or sell

o  specific instructions regarding delivery or exchange destination

o  signature(s) of registered account owner(s) (All signatures may be required.
   Contact your financial advisor or Ameriprise Financial Services for more
   information.)

o  any paper certificates of shares you hold

Payment will be mailed to the address of record and made payable to the names
listed on the account, unless your request specifies differently and is signed
by all owners.

The express mail delivery charges you pay will vary depending on domestic or
international delivery instructions.

By telephone

(800) 297-7378 for brokerage accounts

(800) 967-4377 for wrap accounts

(800) 862-7919 for non-brokerage/wrap accounts

o  Reasonable procedures will be used to confirm authenticity of telephone
   exchange or sale requests.

o  Telephone exchange and sale privileges automatically apply to all accounts
   except custodial, corporate or qualified retirement accounts. You may request
   that these privileges NOT apply by writing the distributor. Each registered
   owner must sign the request.

o  Acting on your instructions, your financial advisor may conduct telephone
   transactions on your behalf.

o  Telephone privileges may be modified or discontinued at any time.

Minimum sale amount:                        $100

Maximum sale amount:                        $100,000

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29p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


By wire

You can wire money from your account to your bank account. Contact your
financial advisor or Ameriprise Financial Services at the above numbers for
additional information.

o  Minimum amount: $1,000

o  Pre-authorization is required.

o  A service fee may be charged against your account for each wire sent.

By scheduled payout plan

o  Minimum payment: $100*

o  Contact your financial advisor or Ameriprise Financial Services to set up
   regular payments.

o  Purchasing new shares while under a payout plan may be disadvantageous
   because of the sales charges.

* Minimum is $50 in a non-brokerage/wrap account.

Electronic transactions

The ability to initiate transactions via the internet may be unavailable or
delayed at certain times (for example, during periods of unusual market
activity). The Fund and the distributor are not responsible for any losses
associated with unexecuted transactions. In addition, the Fund and the
distributor are not responsible for any losses resulting from unauthorized
transactions if reasonable security measures are followed to validate the
investor's identity. The Fund may modify or discontinue electronic privileges at
any time.

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30p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Distributions and Taxes

As a shareholder you are entitled to your share of the Fund's net income and net
gains. The Fund distributes dividends and capital gains to qualify as a
regulated investment company and to avoid paying corporate income and excise
taxes.

DIVIDENDS AND CAPITAL GAIN DISTRIBUTIONS

The Fund's net investment income is distributed to you as dividends. Dividends
may be composed of qualifying dividend income, which is eligible for
preferential tax rates under current tax law, as well as other ordinary dividend
income, which may include non-qualifying dividends, interest income and
short-term capital gains. Capital gains are realized when a security is sold for
a higher price than was paid for it. Each realized capital gain or loss is
long-term or short-term depending on the length of time the Fund held the
security. Realized capital gains and losses offset each other. The Fund offsets
any net realized capital gains by any available capital loss carryovers. Net
short-term capital gains are included in net investment income. Net realized
long-term capital gains, if any, are distributed by the end of the calendar year
as capital gain distributions.

REINVESTMENTS

Dividends and capital gain distributions are automatically reinvested in
additional shares in the same class of the Fund, unless:

o  you request distributions in cash, or

o  you direct the Fund to invest your distributions in the same class of any
   publicly offered RiverSource fund for which you have previously opened an
   account.

We reinvest the distributions for you at the next calculated NAV after the
distribution is paid.

If you choose cash distributions, you will receive cash only for distributions
declared after your request has been processed.

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31p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


TAXES

Distributions are subject to federal income tax and may be subject to state and
local taxes in the year they are declared. You must report distributions on your
tax returns, even if they are reinvested in additional shares.

If you buy shares shortly before the record date of a distribution, you may pay
taxes on money earned by the Fund before you were a shareholder. You will pay
the full pre-distribution price for the shares, then receive a portion of your
investment back as a distribution, which may be taxable.

For tax purposes, an exchange is considered a sale and purchase, and may result
in a gain or loss. A sale is a taxable transaction. If you sell shares for less
than their cost, the difference is a capital loss. If you sell shares for more
than their cost, the difference is a capital gain. Your gain may be short term
(for shares held for one year or less) or long term (for shares held for more
than one year).

You may not create a tax loss, based on paying a sales charge, by exchanging
shares within 91 days of purchase. If you buy Class A shares and within 91 days
exchange into another fund, you may not include the sales charge in your
calculation of tax gain or loss on the sale of the first fund you purchased. The
sales charge may be included in the calculation of your tax gain or loss on a
subsequent sale of the second fund you purchased. For more information, see the
SAI.

Selling shares held in an IRA or qualified retirement account may subject you to
federal taxes, penalties and reporting requirements. Please consult your tax
advisor.

Important: This information is a brief and selective summary of some of the tax
rules that apply to this Fund. Because tax matters are highly individual and
complex, you should consult a qualified tax advisor.

- --------------------------------------------------------------------------------
32p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Master/Feeder Structure

This Fund uses a master/feeder structure. This means that the Fund (a feeder
fund) invests all of its assets in the Portfolio (the master fund). The
master/feeder structure offers the potential for reduced costs because it
spreads fixed costs of portfolio management over a larger pool of assets. The
Fund may withdraw its assets from the Portfolio at any time if the Fund's board
determines that it is best. In that event, the board would consider what action
should be taken, including whether to hire an investment advisor to manage the
Fund's assets directly or to invest all of the Fund's assets in another pooled
investment entity. Here is an illustration of the structure:

                        Investors buy shares in the Fund
                                       |
                                       V
                      The Fund buys units in the Portfolio
                                       |
                                       V
          The Portfolio invests in securities, such as stocks or bonds

Other feeders may include mutual funds and institutional accounts. These feeders
buy the Portfolio's securities on the same terms and conditions as the Fund and
pay their proportionate share of the Portfolio's expenses. However, their
operating costs and sales charges are different from those of the Fund.
Therefore, the investment returns for other feeders are different from the
returns of the Fund.

At a meeting held on January 12-13, 2005, the Fund's Board determined that it
was in the best interests of shareholders to withdraw the Fund's assets from the
master/feeder structure. The necessary steps to finalize the withdrawal are
expected to be completed in late 2005 or early 2006. After that date, the Fund
will invest directly in and manage its own portfolio of securities rather than
investing in a master portfolio. RiverSource Investments, the investment manager
to the master portfolio, will continue to serve as investment manager to the
Fund under the same terms and conditions.

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33p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


Financial Highlights

The financial highlights tables are intended to help you understand the Fund's
financial performance. Certain information reflects financial results for a
single Fund share. The total returns in the tables represent the rate that an
investor would have earned or lost on an investment in the Fund (assuming
reinvestment of all dividends and distributions). This information has been
audited by KPMG LLP, whose report, along with the Fund's financial statements,
is included in the annual report which, if not included with this prospectus, is
available upon request.



Class A
Per share income and capital changes(a)
Fiscal period ended Sept. 30,                                               2005       2004        2003        2002       2001
                                                                                                        
Net asset value, beginning of period                                      $18.02     $16.60      $14.47      $17.86     $27.12
                                                                          ------     ------      ------      ------     ------
Income from investment operations:
Net investment income (loss)                                                 .24        .20         .18         .17        .20
Net gains (losses) (both realized and unrealized)                           2.02       1.41        2.13       (3.39)     (6.47)
                                                                          ------     ------      ------      ------     ------
Total from investment operations                                            2.26       1.61        2.31       (3.22)     (6.27)
                                                                          ------     ------      ------      ------     ------
Less distributions:
Dividends from net investment income                                        (.25)      (.19)       (.18)       (.17)      (.18)
Distributions from realized gains                                             --         --          --          --      (2.81)
                                                                          ------     ------      ------      ------     ------
Total distributions                                                         (.25)      (.19)       (.18)       (.17)     (2.99)
                                                                          ------     ------      ------      ------     ------
Net asset value, end of period                                            $20.03     $18.02      $16.60      $14.47     $17.86
                                                                          ------     ------      ------      ------     ------
Ratios/supplemental data
Net assets, end of period (in millions)                                   $1,466     $1,596      $1,651      $1,599     $2,277
Ratio of expenses to average daily net assets(b)                            .91%       .89%        .92%        .92%       .87%
Ratio of net investment income (loss) to average daily net assets          1.26%      1.06%       1.12%        .93%       .88%
Portfolio turnover rate (excluding short-term securities)                   132%        76%         68%         86%        87%
Total return(c)                                                           12.58%      9.72%      16.03%     (18.20%)   (24.87%)


(a)  For a share outstanding throughout the period. Rounded to the nearest cent.

(b)  Expense ratio is based on total expenses of the Fund before reduction of
     earnings credits on cash balances.

(c)  Total return does not reflect payment of a sales charge.

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34p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS




Class B
Per share income and capital changes(a)
Fiscal period ended Sept. 30,                                               2005       2004        2003        2002       2001
                                                                                                        
Net asset value, beginning of period                                      $17.86     $16.44      $14.34      $17.70     $26.90
                                                                          ------     ------      ------      ------     ------
Income from investment operations:
Net investment income (loss)                                                 .09        .05         .06         .03        .01
Net gains (losses) (both realized and unrealized)                           2.00       1.42        2.10       (3.36)     (6.39)
                                                                          ------     ------      ------      ------     ------
Total from investment operations                                            2.09       1.47        2.16       (3.33)     (6.38)
                                                                          ------     ------      ------      ------     ------
Less distributions:
Dividends from net investment income                                        (.09)      (.05)       (.06)       (.03)      (.01)
Distributions from realized gains                                             --         --          --          --      (2.81)
                                                                          ------     ------      ------      ------     ------
Total distributions                                                         (.09)      (.05)       (.06)       (.03)     (2.82)
                                                                          ------     ------      ------      ------     ------
Net asset value, end of period                                            $19.86     $17.86      $16.44      $14.34     $17.70
                                                                          ------     ------      ------      ------     ------
Ratios/supplemental data
Net assets, end of period (in millions)                                      $97       $146        $190        $210       $306
Ratio of expenses to average daily net assets(b)                           1.69%      1.67%       1.69%       1.69%      1.64%
Ratio of net investment income (loss) to average daily net assets           .51%       .27%        .35%        .15%       .11%
Portfolio turnover rate (excluding short-term securities)                   132%        76%         68%         86%        87%
Total return(c)                                                           11.72%      8.91%      15.09%     (18.84%)   (25.48%)


(a)  For a share outstanding throughout the period. Rounded to the nearest cent.

(b)  Expense ratio is based on total expenses of the Fund before reduction of
     earnings credits on cash balances.

(c)  Total return does not reflect payment of a sales charge.

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35p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS




Class C
Per share income and capital changes(a)
Fiscal period ended Sept. 30,                                               2005       2004        2003        2002       2001
                                                                                                        
Net asset value, beginning of period                                      $17.79     $16.39      $14.30      $17.66     $26.88
                                                                          ------     ------      ------      ------     ------
Income from investment operations:
Net investment income (loss)                                                 .09        .06         .07         .04        .04
Net gains (losses) (both realized and unrealized)                           1.99       1.39        2.09       (3.36)     (6.41)
                                                                          ------     ------      ------      ------     ------
Total from investment operations                                            2.08       1.45        2.16       (3.32)     (6.37)
                                                                          ------     ------      ------      ------     ------
Less distributions:
Dividends from net investment income                                        (.09)      (.05)       (.07)       (.04)      (.04)
Distributions from realized gains                                             --         --          --          --      (2.81)
                                                                          ------     ------      ------      ------     ------
Total distributions                                                         (.09)      (.05)       (.07)       (.04)     (2.85)
                                                                          ------     ------      ------      ------     ------
Net asset value, end of period                                            $19.78     $17.79      $16.39      $14.30     $17.66
                                                                          ------     ------      ------      ------     ------
Ratios/supplemental data
Net assets, end of period (in millions)                                       $3         $3          $3          $2         $2
Ratio of expenses to average daily net assets(b)                           1.69%      1.67%       1.70%       1.71%      1.64%
Ratio of net investment income (loss) to average daily net assets           .51%       .29%        .32%        .14%       .16%
Portfolio turnover rate (excluding short-term securities)                   132%        76%         68%         86%        87%
Total return(c)                                                           11.72%      8.87%      15.11%     (18.84%)   (25.47%)


(a)  For a share outstanding throughout the period. Rounded to the nearest cent.

(b)  Expense ratio is based on total expenses of the Fund before reduction of
     earnings credits on cash balances.

(c)  Total return does not reflect payment of a sales charge.

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36p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS




Class Y
Per share income and capital changes(a)
Fiscal period ended Sept. 30,                                               2005       2004        2003        2002       2001
                                                                                                        
Net asset value, beginning of period                                      $18.01     $16.59      $14.46      $17.86     $27.13
                                                                          ------     ------      ------      ------     ------
Income from investment operations:
Net investment income (loss)                                                 .27        .23         .20         .20        .23
Net gains (losses) (both realized and unrealized)                           2.03       1.41        2.14       (3.40)     (6.47)
                                                                          ------     ------      ------      ------     ------
Total from investment operations                                            2.30       1.64        2.34       (3.20)     (6.24)
                                                                          ------     ------      ------      ------     ------
Less distributions:
Dividends from net investment income                                        (.28)      (.22)       (.21)       (.20)      (.22)
Distributions from realized gains                                             --         --          --          --      (2.81)
                                                                          ------     ------      ------      ------     ------
Total distributions                                                         (.28)      (.22)       (.21)       (.20)     (3.03)
                                                                          ------     ------      ------      ------     ------
Net asset value, end of period                                            $20.03     $18.01      $16.59      $14.46     $17.86
                                                                          ------     ------      ------      ------     ------
Ratios/supplemental data
Net assets, end of period (in millions)                                     $332       $438        $520        $490       $694
Ratio of expenses to average daily net assets(b)                            .75%       .73%        .76%        .76%       .71%
Ratio of net investment income (loss) to average daily net assets          1.44%      1.23%       1.28%       1.08%      1.04%
Portfolio turnover rate (excluding short-term securities)                   132%        76%         68%         86%        87%
Total return(c)                                                           12.83%      9.90%      16.23%     (18.12%)   (24.77%)


(a)  For a share outstanding throughout the period. Rounded to the nearest cent.

(b)  Expense ratio is based on total expenses of the Fund before reduction of
     earnings credits on cash balances.

(c)  Total return does not reflect payment of a sales charge.

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37p   --   RIVERSOURCE STOCK FUND   --   2005 PROSPECTUS


This Fund, along with the other RiverSource funds, is distributed by Ameriprise
Financial Services, Inc. and can be purchased from Ameriprise Financial Services
or from a limited number of other authorized financial intermediaries. The Fund
can be found under the "RiverSource" banner in most mutual fund quotations.

Additional information about the Fund and its investments is available in the
Fund's SAI, and annual and semiannual reports to shareholders. In the Fund's
annual report, you will find a discussion of market conditions and investment
strategies that significantly affected the Fund's performance during its most
recent fiscal year. The SAI is incorporated by reference in this prospectus. For
a free copy of the SAI, the annual report, or the semiannual report, or to
request other information about the Fund or make a shareholder inquiry, contact
your financial advisor, investment professional or Ameriprise Financial
Services.

Ameriprise Financial Services
70100 Ameriprise Financial Center
Minneapolis, MN 55474
(800) 862-7919
TTY: (800) 846-4852

RiverSource Investments Website address:
riversource.com/investments

You may review and copy information about the Fund, including the SAI, at the
Securities and Exchange Commission's (Commission) Public Reference Room in
Washington, D.C. (for information about the public reference room call
1-202-942-8090). Reports and other information about the Fund are available on
the EDGAR Database on the Commission's Internet site at www.sec.gov. Copies of
this information may be obtained, after paying a duplicating fee, by electronic
request at the following E-mail address: publicinfo@sec.gov, or by writing to
the Public Reference Section of the Commission, Washington, D.C. 20549-0102.

Investment Company Act File #811-498

Ticker Symbol
Class A: INSTX    Class B:IDSBX
Class C: --       Class I:--
Class Y: IDSYX

[RIVERSOURCE INVESTMENTS(SM) LOGO]

RiverSource Investments
200 Ameriprise Financial Center
Minneapolis, MN 55474

                                                             S-6351-99 Z (11/05)