WANGER ADVISORS TRUST
485BPOS, 1997-04-25
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<PAGE>
 
    
  As filed with the Securities and Exchange Commission on April 25, 1997     
 
                                        Securities Act Registration No. 33-83548
                                        Investment Company Act File No. 811-8748
                                                                               
- ------------------------------------------------------------------------------- 
                       SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, D.C. 20549
- ------------------------------------------------------------------------------- 

                                   FORM N-1A
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
    
                        Post-Effective Amendment No. 4     

                                      and

        REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
    
                                Amendment No. 5     

                    ---------------------------------------
                                        
                             WANGER ADVISORS TRUST
                                 (Registrant)

                      227 West Monroe Street, Suite 3000
                           Chicago, Illinois  60606

                        Telephone number:  312/634-9200
                                        
                    ---------------------------------------

    Ralph Wanger                              Janet D. Olsen
    Wanger Advisors Trust                     Bell, Boyd & Lloyd
    227 West Monroe Street, Suite 3000        Three First National Plaza
    Chicago, Illinois  60606                  70 West Madison Street, Suite 3300
                                              Chicago, Illinois 60602-4207

                             (Agents for service)

                    --------------------------------------- 
                 Amending Parts A, B and C, and filing exhibits

                    ---------------------------------------
                                        

               It is proposed that this filing will become effective:
                    [ ] immediately upon filing pursuant to rule 485(b)
                    [X] on April 30, 1997 pursuant to rule 485(b)
                    [ ] 60 days after filing pursuant to rule 485(a)(1)
                    [ ] on _________ pursuant to rule 485(a)(1)
                    [ ] 75 days after filing pursuant to rule 485(a)(2)
                    [ ] on _________ pursuant to rule 485(a)(2)
 
- ------------------------------------------------------------------------------- 

Registrant has elected to register pursuant to Rule 24f-2 an indefinite number
of shares of beneficial interest of its series designated Wanger U.S. Small Cap
and Wanger International Small Cap.  On February 26, 1997, Registrant filed its
Rule 24f-2 Notice for the fiscal year ended December 31, 1996.

- ------------------------------------------------------------------------------- 

<PAGE>
 
                             WANGER ADVISORS TRUST

         Cross reference sheet pursuant to rule 495(a) of Regulation C

Item No.                                   Location or caption/*/
- -------                                    -------------------

                              Part A (Prospectus)
                             Wanger U.S. Small Cap
                        Wanger International Small Cap
                        ------------------------------


1.  Cover Page                             Cover Page

2.  Synopsis                               Expenses and Performance - Expenses

3.  Condensed Financial Information        Financial Highlights

4.  General Description of Registrant      The Funds at a Glance; Expenses and
                                           Performance; The Wanger Investment
                                           Objective and Policies; Securities,
                                           Investment Practices, and Risks;
                                           Organization and Management

5.  Management of the Fund                 Expenses and Performance; 
                                           Organization and Management

5A. Management's Discussion of Fund        Not applicable
    Performance

6.  Capital Stock and Other Securities     Investing in the Funds; Dividends and
                                           Taxes

7.  Purchase of Securities Being Offered   Investing in the Funds

8.  Redemption or Repurchase               Investing in the Funds

9.  Pending Legal Proceedings              Not applicable



- ------------------------
*References are to captions within the part of the registration statement to 
    which the particular item relates except as otherwise indicated.

<PAGE>
 
Item No.                                      Location or caption*
- --------                                      --------------------

                 Part B (Statement of Additional Information)
                             Wanger U.S. Small Cap
                        Wanger International Small Cap
                  -----------------------------------------
<TABLE> 
<C>  <S>                                      <C> 
10.  Cover Page                               Cover Page

11.  Table of Contents                        Table of Contents

12.  General Information and History          Information About the Funds

13.  Investment Objectives and Policies       Investment Objectives and Policies;
                                              Investment Techniques and Risks

14.  Management of the Registrant             Trustees and Officers

15.  Control Persons and Principal            The Trust; Trustees and Officers
     Holders of Securities

16.  Investment Advisory and Other Services   Investment Adviser; Custodian; Independent
                                              Auditors

17.  Brokerage Allocation                     Portfolio Transactions

18.  Capital Stock and Other Securities       The Trust

19.  Purchase, Redemption, and Pricing of     Purchasing and Redeeming Shares
     Securities Being Offered

20.  Tax Status                               Additional Tax Information

21.  Underwriters                             Distributor

22.  Calculation of Performance Data          Performance Information

23.  Financial Statements                     Information About the Funds
</TABLE> 

- ---------------------------
*References are to captions within the part of the registration statement to 
     which the particular item relates except as otherwise indicated.
<PAGE>
 
Item No.                Location or caption*
- --------                --------------------

                   Part C (Other Information)
                   --------------------------

      24           Financial statements and exhibits

      25           Persons controlled by or under common control with registrant

      26           Number of holders of securities

      27           Indemnification

      28           Business and other connections of investment adviser

      29           Principal underwriters

      30           Location of accounts and records

      31           Management services

      32           Undertakings


- ---------------------
* References are to captions within the part of the registration statement to 
  which the particular item relates except as otherwise indicated.
<PAGE>
 
- --------------------------------------------------------------------------------
[Graphic of a Squirrel]                     Wanger Advisors Trust
 

                                            Wanger U.S. Small Cap
                                            Wanger International Small Cap

                                            Prospectus
                                            April 30, 1997





                                   Wanger 97
<PAGE>

                                   CONTENTS
                                   --------

<TABLE>
<S>                                                                 <C>
The Funds at a Glance.................................................1
Expenses and Performance..............................................2
Investing in the Funds................................................7
The Wanger Investment Objective and Policies.........................10
Securities, Investment Practices, and Risks..........................12
Organization and Management..........................................17
Dividends and Taxes..................................................21
</TABLE>



                            Wanger Asset Management, L.P.
                            227 West Monroe Street
                            Suite 3000
                            Chicago, Illinois 60606

                            1-800-4-WANGER
                            (1-800-492-6437)
<PAGE>
 
                             WANGER ADVISORS TRUST
                             WANGER U.S. SMALL CAP
                        WANGER INTERNATIONAL SMALL CAP

Wanger U.S. Small Cap and Wanger International Small Cap (each, a "Fund";
together, the "Funds"), series of Wanger Advisors Trust (the "Trust"), invest
for long-term capital growth. Each Fund invests primarily in stocks of small and
medium-size companies. Wanger U.S. Small Cap invests primarily in U.S.
companies, and Wanger International Small Cap invests primarily in non-U.S.
companies. Both Funds are managed by Wanger Asset Management, L.P. ("WAM").

Shares of Wanger U.S. Small Cap and Wanger International Small Cap are offered
to life insurance companies ("Life Companies") for allocation to certain
separate accounts established for the purpose of funding qualified and non-
qualified variable annuity or variable life insurance contracts ("Variable
Contracts"), and may also be offered directly to certain pension plans and
retirement arrangements and accounts permitting accumulation of funds on a tax-
deferred basis ("Retirement Plans").

                        ______________________________

Please read this prospectus before investing, and keep it on file for future
reference. It contains important information about how the Funds invest and the
availability of Fund shares.

A Statement of Additional Information ("SAI") dated the date of this prospectus
has been filed with the Securities and Exchange Commission, and is incorporated
herein by reference. The SAI is available free upon request by calling WAM at: 
1-800-4-WANGER.

LIKE ALL MUTUAL FUNDS, THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY
THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR
HAS THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO
THE CONTRARY IS A CRIMINAL OFFENSE.

                                  Prospectus
                                April 30, 1997

<PAGE>
 
                             The Funds at a Glance

Goal

Wanger U.S. Small Cap ("U.S. Small Cap") and Wanger International Small Cap
("International Small Cap") invest for long-term growth of capital.

Strategy

U.S. Small Cap and International Small Cap invest primarily in stocks of small
and medium-size companies. The Funds look for attractively-priced companies that
Wanger Asset Management, L.P., investment adviser to the Funds, thinks will
benefit from favorable long-term social, economic, or political trends. The
areas of emphasis change from time to time. U.S. Small Cap invests primarily in
U.S. companies. International Small Cap invests primarily in non-U.S. companies.

Management
    
Wanger Asset Management, L.P. ("WAM") chooses investments for the Funds. WAM
employs a team approach to management of the Funds. The management team is
comprised of the lead portfolio manager, other WAM portfolio managers and
research analysts. Team members share responsibility for providing ideas,
information, knowledge and expertise in managing the Funds. Each team member has
one or more areas of expertise that is applied to the management of the Fund.
Daily decisions on portfolio selection rest with the lead portfolio manager who
utilizes the input and advice of the management team in making purchase and sale
decisions.

Robert A. Mohn is the lead portfolio manager of U.S. Small Cap and Marcel
Houtzager is the lead portfolio manager of International Small Cap.      

Who May Want To Invest

U.S. Small Cap and International Small Cap are designed for investors who want
long-term growth of capital rather than income and who have the long-term
investment outlook needed for investing in the stocks of small and medium-size
companies in the U.S. and overseas. Shares of the Fund are sold only to Life
Companies and certain Retirement Plans. See "Investing in the Fund -- Who May
Invest."

The value of each Fund's investments and the return it generates varies from day
to day. Performance depends on WAM's skill in identifying the trends that are
the basis for the Fund's stock selections, and in picking individual stocks, as
well as general market and economic conditions.
<PAGE>

The stocks of small companies often involve more risk than the stocks of larger
companies. Over time, these stocks have shown greater growth potential than
other types of securities. In the short term, however, stock prices may
fluctuate widely in response to company, market, or economic news. The Funds do
not pursue income, and are not by themselves a balanced investment plan.


                           Expenses and Performance
    
Expenses

Transaction expenses are charges paid when shares of the Funds are purchased or
sold.

- -------------------------------------------------------------------------------

  Maximum sales charge on purchases
  and reinvested dividends................................................None

  Deferred sales charge on redemption.....................................None

- -------------------------------------------------------------------------------

  Annual Fund operating expenses. Each Fund pays its own operating expenses
including the management fee to WAM. Expenses are factored into the Fund's price
or dividends, are subtracted from the share price daily, and are not charged
directly to shareholders. All Fund operating expenses are calculated as a
percentage of average net assets.

- --------------------------------------------------------------------------------
Wanger U.S. Small Cap


Management Fee...........................................................  0.99%
12b-1 Fee................................................................  None
Other Expenses...........................................................  0.22%
- --------------------------------------------------------------------------------
Total Fund Operating Expenses............................................  1.21%


- --------------------------------------------------------------------------------
Wanger International Small Cap

Management Fee...........................................................  1.30%
12b-1 Fee................................................................  None
Other Expenses...........................................................  0.49%
- --------------------------------------------------------------------------------
Total Fund Operating Expenses............................................  1.79%


The management fees shown are based on the following schedule: for U.S. Small
Cap, 1.00% of the net asset value of the Fund up to $100 million, 0.95% of the
net asset value of the Fund in excess of $100 million and up to $250 million,
and 0.90% of the net asset value in excess of $250 million; for International
Small Cap, 1.30% of the net asset value of the Fund up to $100      
<PAGE>

     
million, 1.20% of the net asset value of the Fund in excess of $100 million and
up to $250 million, and 1.10% of the net asset value in excess of $250 million.
The "Other Expenses" are at the rates incurred during the last fiscal year. As
required by SEC rules, "Other Expenses" reflects gross custody fees. Net of
custodian fees paid indirectly, "Other Expenses" would have been .20% for U.S.
Small Cap and .45% for International Small Cap. Total Fund Operating Expenses
would have been 1.19% and 1.75%, respectively. Starting in 1996, WAM has
voluntarily agreed to reimburse each Fund in the event that the management fee
and certain operating expenses of that Fund in any fiscal year exceed 1.50% of
average daily net assets for U.S. Small Cap and 1.90% of average daily net
assets for International Small Cap. See "Investment Adviser" in the SAI.

UNDERSTANDING EXPENSES

Operating a mutual fund involves a variety of expenses for portfolio management,
accounting, tax reporting, and other services. These costs are paid from the
fund's assets; any quoted share price or return is after expenses.

  Example: Let's say, hypothetically, that each Fund's annual return is 5% and
that its operating expenses are exactly as shown above. For every $1,000 you
invested, here's how much would have been paid in total expenses if shares of
each Fund were redeemed after the number of years indicated:

<TABLE>
<CAPTION>

Wanger U.S. Small Cap
<S>                                                                      <C>
After 1 year..............................................................$ 12
After 3 years.............................................................$ 38
After 5 years.............................................................$ 67
After 10 years............................................................$148

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

Wanger International Small Cap
After 1 year..............................................................$ 18
After 3 years.............................................................$ 56
After 5 years.............................................................$ 97
After 10 years............................................................$213

- --------------------------------------------------------------------------------
</TABLE>      

The table and examples illustrate the effect of direct and indirect expenses,
but are not meant to suggest actual or expected costs or returns, all of which
may vary.

<PAGE>
 
FINANCIAL HIGHLIGHTS
    
  The following information has been audited by Ernst & Young LLP, independent
auditors. Their unqualified report, and the Funds' financial statements, are
included in the Trust's Annual Report. The financial statements of each fund and
the auditors' report are incorporated by reference into the SAI.

<TABLE>
<CAPTION>
                                                               Year ended        May 3, 1995 through
                                                            December 31, 1996      December 31, 1995
- ----------------------------------------------------------------------------------------------------
<S>                                                         <C>                  <C>
Wanger U.S. Small Cap
 
Net asset value, beginning of period                                 $  11.60              $   10.00
 
Income from investment operations
 Net investment loss (c)                                                 (.06)                  (.05)
 Net realized and unrealized gain on investments                         5.46                   1.65
 ---------------------------------------------------------------------------------------------------
 Total from investment operations                                        5.40                   1.60
 
Less distributions
 Dividends from net investment income                                    ----                   ----
 Distributions from net realized gain                                    (.03)                  ----
 ---------------------------------------------------------------------------------------------------
 Total distributions                                                     (.03)                  ----
 
Net asset value, end of period                                       $  16.97              $   11.60
- ----------------------------------------------------------------------------------------------------
Total return                                                            46.59%                 16.00%
 
Ratios/supplemental data:
Ratio of expenses to average net assets (a) (b)                          1.21%                  2.08%*
Ratio of net investment loss to average net assets (b)                   (.41%)                (1.44%)*
Portfolio turnover rate                                                 46.00%                 59.00%*
Net assets at end of period (000s omitted)                           $128,958              $  21,904

The average commissions paid per share on stock transactions
for the year ended December 31, 1996 was $.0581.
- ----------------------------------------------------------------------------------------------------
</TABLE> 

*Annualized

(a) In accordance with a requirement by the Securities and Exchange Commission,
    this ratio reflects gross custodian fees. This ratio net of custodian fees
    paid indirectly would have been 1.19% for the year ended December 31, 1996
    and 2.00% for the period ended December 31, 1995.      

<PAGE>

     
(b) The Fund was reimbursed by the Advisor for certain expenses from May 3, 1995
    through December 31, 1995. Without the reimbursement, the ratio of expenses
    to average net assets and the ratio of net investment loss to average net
    assets for the period ended December 31, 1995 would have been 2.35% and
    (1.71%), respectively.

(c) Net investment loss per share for the year ended December 31, 1996 was based
    upon the average shares outstanding during the year.

<TABLE>
<CAPTION>
                                                                Year ended       May 3, 1995 through
                                                             December 31, 1996    December 31, 1995
- ----------------------------------------------------------------------------------------------------
<S>                                                         <C>                  <C>
Wanger International Small Cap
 
Net asset value, beginning of period                                  $ 13.45              $   10.00
 
Income from investment operations
 Net investment loss (c)                                                 (.09)                  (.03)
 Net realized and unrealized gain on investments                         4.38                   3.48
- ----------------------------------------------------------------------------------------------------
 Total from investment operations                                        4.29                   3.45
 
Less distributions                                                       ----                   
 Dividends from net investment income                                    ----                   ----
 Distributions from net realized gain                                    (.03)                  ----
- ----------------------------------------------------------------------------------------------------
 Total distributions                                                     (.03)                  ----
 
Net asset value, end of period                                        $ 17.71              $   13.45
- ----------------------------------------------------------------------------------------------------
 
Total return                                                            32.01%                 34.50%
 
Ratios/supplemental data:
Ratio of expenses to average net assets (a) (b)                          1.79%                  2.32%*
Ratio of net investment loss to average net assets (b)                   (.56%)                (0.81%)*
Portfolio turnover rate                                                 50.00%                 14.00%*
Net assets at end of period (000s omitted)                            $84,855              $  11,369

The average commissions paid per share on stock transactions
for the year ended December 31, 1996 was $.0130.

- ---------------------------------------------------------------------------------------------------- 
</TABLE> 
*Annualized

(a) In accordance with a requirement by the Securities and Exchange Commission,
    this ratio reflects gross custodian fees. This ratio net of custodian fees
    paid indirectly would have been 1.75% for the year ended December 31, 1996
    and 2.00% for the period ended December 31, 1995.      

<PAGE>
     
(b) The Fund was reimbursed by the Advisor for certain expenses from May 3, 1995
    through December 31, 1995. Without the reimbursement, the ratio of expenses
    to average net assets and the ratio of net investment loss to average net
    assets for the period ended December 31, 1995 would have been 4.20% and
    (2.69%), respectively.

(c) Net investment loss per share for the year ended December 31, 1996 was based
    upon the average shares outstanding during the year.      

Performance

Mutual fund performance is commonly measured as total return. Total return is
the change in value of an investment in a fund over a given period, assuming
reinvestment of any dividends and capital gains. Total return reflects actual
performance over a stated period of time. Average annual total return is a
hypothetical rate of return that, if achieved annually, would have produced the
same total return if performance had been constant over the entire period.
Average annual total returns smooth out variations in performance; they are not
the same as actual year-by-year results.

  Total returns are based on past results and are not a prediction of future
performance. They do not include the effect of income taxes.

  The Funds sometimes show their performance compared to stock indexes
(described in the SAI), or give their ratings or rankings determined by an
unrelated organization.

  Information about the performance of the Funds is contained in the Trust's
annual report which may be obtained free of charge by calling WAM at: 1-800-4-
WANGER.
    
  Total returns quoted for the Funds include the effect of deducting each Fund's
expenses, but will not include charges and expenses attributable to a particular
Variable Contract or Retirement Plan. Because shares of the Funds may only be
purchased through a Variable Contract or an eligible Retirement Plan, an
individual owning a Variable Contract or participating in a Retirement Plan
should carefully review the Variable Contract disclosure documents or Retirement
Plan information for information on relevant charges and expenses. Excluding
these charges from quotations of each Fund's performance has the effect of
increasing the performance quoted. These charges should be considered when
comparing a Fund's performance to other investment vehicles.      

                                      
<PAGE>
 
                            Investing in the Funds

Doing Business With The Trust

The Trust provides Life Companies and Retirement Plans with information Monday
through Friday, except holidays, from 8:00 a.m. to 4:30 p.m. Central time. For
information, prices, literature, or to obtain information regarding the
availability of Fund shares or how Fund shares are redeemed, call WAM at 
1-800-4-WANGER.

Who May Invest

Shares of the Funds are issued and redeemed in connection with investments in
and payments under certain qualified and non-qualified Variable Contracts issued
through separate accounts of the Life Companies. Shares of the Funds may also be
offered directly to certain of the following types of qualified plans and
retirement arrangements and accounts, collectively called "Retirement Plans":

 . a plan described in section 401(a) of the Internal Revenue Code that includes
  a trust exempt from tax under section 501(a);
 . an annuity plan described in section 403(a);
 . an annuity contract described in section 403(b), including a 403(b)(7)
  custodial account;
 . a governmental plan under section 414(d) or an eligible deferred compensation
  plan under section 457(b); and
 . a plan described in section 501(c)(18).

The trust or plan must be established before shares of the Funds can be
purchased by the plan. Neither the Funds nor WAM offers prototypes of these
plans. The Funds have imposed certain additional restrictions on sales to
Retirement Plans to reduce their expenses. To be eligible to invest in the
Funds, a Retirement Plan must be domiciled in a state in which Fund shares may
be sold without payment of a fee to the state. In most states, this policy will
require that a Retirement Plan have at least $5 million in assets and that
investment decisions are made by a Plan fiduciary rather than Plan participants
in order for the Plan to be eligible to invest. The Funds do not intend to offer
shares in states where the sale of Fund shares requires the payment of a fee. A
Retirement Plan may call WAM at 1-800-4-WANGER to determine if it is eligible to
invest.

How to Invest and Redeem

Shares of U.S. Small Cap and International Small Cap may not be purchased or
redeemed directly by individual Variable Contract owners or individual
Retirement Plan participants. Variable Contract owners or Retirement Plan
participants should consult the disclosure documents for their Variable
Contract, or the plan documents (including the summary plan description) for
their Retirement Plan, regarding the provisions of the Variable Contract or of
the Retirement Plan which govern the availability of the Fund as an investment
vehicle for allocations under their Variable Contract or Retirement Plan.

                                       
<PAGE>
 
  No sales commissions of any kind are imposed upon purchases of Fund shares by
Life Companies or Retirement Plans. (However, each Variable Contract imposes its
own charges and fees on owners of the Variable Contract, and Retirement Plans
may impose such charges on participants in the Retirement Plan.) The price paid
for shares is the net asset value ("NAV") next calculated after a Fund or its
agent receives and accepts an order to purchase Fund shares. Purchase orders are
considered received when information identifying the purchaser and the money to
pay for the shares are received. Redemptions will be effected through the Life
Companies and Retirement Plan trustees to meet obligations under the Variable
Contracts and the Retirement Plans. In the case of a Life Company purchaser,
particular purchase and redemption procedures typically will be set forth in an
agreement between the Trust and the Life Company. The Trust may enter into
similar agreements with Retirement Plans.

  Purchases.  To the extent not otherwise provided in any agreement between the
Trust and a Life Company or Retirement Plan, shares of a Fund may be purchased
by check or by wire transfer of funds. To be effective, a purchase order must
consist of the money to purchase the shares and (i) information identifying the
purchaser, in the case of a Life Company or Retirement Plan with which the Funds
have entered into an agreement, or a subsequent purchase by a Life Company or
Retirement Plan that is already a Fund shareholder, or (ii) a completed purchase
application, in the case of the initial investment by a Retirement Plan with
which the Funds do not have an agreement.

  Redemptions.  Subject to the terms of any agreement between the Funds and any
Life Company or Retirement Plan, shares may be redeemed by written request or by
telephone (for redemptions of $50,000 or less), with proceeds paid by check or
by wire transfer.

  Redeeming Shares in Writing. A written redemption request must:

     .  identify the owner of the account;
     .  specify the number of shares or dollar amount to be  redeemed;
     .  be signed on behalf of the owner by an individual or individuals
        authorized to do so, and include evidence of their authority;
     .  if the shares to be redeemed have a value of more than $50,000, include
        a signature guarantee by an "eligible guarantor institution" as defined
        in the rules under the Securities Exchange Act of 1934 (including a 
        bank, broker-dealer, credit union (if authorized under state law),
        national securities exchange, registered securities association,
        clearing agency or savings association, but not a notary public); and
     .  be accompanied by any stock certificates representing the shares to be
        redeemed.

A check for the redemption proceeds will be mailed to the address of record
unless payment by wire transfer is requested.

  Redeeming Shares by Telephone. Unless a Retirement Plan shareholder chose on
its purchase application not to have the ability to do so, redemptions of shares
having a value of $50,000 or less may be requested by calling the Fund's
transfer agent at 1-800-962-1585. The Fund will not be responsible for
unauthorized transactions if it follows reasonable procedures to confirm that
instructions received by telephone are genuine, such as requesting
identification information that appears on a Retirement Plan's purchase
application and requiring permission to

                                      
<PAGE>
 
record the telephone call. If you are unable to reach the Funds or their
transfer agent by telephone, your redemption request would have to be placed by
mail.

  Exchanging Shares by Telephone.  To the extent not otherwise provided in an
agreement between the Trust and a Retirement Plan shareholder, a Retirement Plan
may exchange shares of one Fund for shares of the other Fund by telephone by
calling 1-800-962-1585. Shares may be exchanged only between identically-
registered accounts, and the shares in the new Fund must be available for sale
without payment of a fee under any applicable state securities law. Shares for
which share certificates have been issued may not be exchanged by telephone. (If
you want to return your certificates, call the Funds' transfer agent at 1-800-
962-1585 for instructions.) Because excessive trading can hurt Fund performance
and shareholders, the Funds reserve the right to temporarily or permanently
terminate the exchange privilege of any shareholder who makes excessive use of
the exchange plan. In particular, a pattern of exchanges that coincide with a
"market timing" strategy may be disruptive to a Fund. The Funds may limit the
number of exchanges per year. The Funds will not be responsible for unauthorized
transactions if they follow reasonable procedures to confirm that instructions
received by telephone are genuine, such as requesting information that appears
on a Retirement Plan's purchase application and requiring permission to record
the telephone call.

  Normally, redemption proceeds will be paid within seven days after a Fund or
its agent receives a request for redemption. Redemptions may be suspended or
payment date postponed on days when the New York Stock Exchange ("NYSE") is
closed (other than weekends or holidays), when trading on the NYSE is
restricted, or as permitted by the SEC.

Share Price

The Funds are open for business each day the NYSE is open. The offering price
(price to buy one share) and redemption price (price to sell one share) are the
Fund's net asset value ("NAV") calculated at the next Closing Time after receipt
of an order. Closing Time is the time of the close of regular session trading on
the NYSE, which is usually 3:00 p.m. Central time, but is sometimes earlier.

  A Fund's NAV is the value of a single share. The NAV is computed by adding up
the value of the Fund's investments, cash, and other assets, subtracting its
liabilities, and then dividing the result by the number of shares outstanding.

  Each Fund's portfolio securities and assets are valued primarily on the basis
of market quotations from the primary market in which they are traded or, if
quotations are not readily available, by a method that the Board of Trustees
believes accurately reflects a fair value. Values of foreign securities are
translated from the local currency into U.S. dollars using current exchange
rates.

  A purchase or redemption of Fund shares will be priced at the next NAV
calculated after the purchase or redemption request is received and accepted by
the Funds or their agent. An order received before Closing Time will get that
day's price; an order received after Closing Time will get the next day's price.

                                       
<PAGE>
 
Statements and Reports

Information sent to Life Companies and Retirement Plans semi-annually includes:

 . Schedule of Fund investments.
 . Reports to shareholders.
  Call WAM at: 1-800-4-WANGER for copies of Fund reports.


                 The Wanger Investment Objective and Policies

U.S. Small Cap and International Small Cap seek long-term growth of capital.
Although income is considered in the selection of securities for U.S. Small Cap,
neither Fund is designed for investors seeking primarily income rather than
capital appreciation.

  The Fund prefers small companies. Since large institutions seek highly
marketable stocks, the stocks of large companies are studied in detail by
security analysts, with the result that all investors know much the same thing
about large companies. WAM prefers to work with stocks where values are more
attractive because the facts about the companies are not universally known. U.S.
Small Cap and International Small Cap thus generally concentrate purchases on
that segment of the market where the competition is less intense -- companies
with a total common stock market capitalization of less than $1 billion. WAM
wants to be able to understand any company in which the Funds invest, and
smaller companies are easier to comprehend than large firms or conglomerates.
When a company develops into a multi-industry giant, it is difficult for even
the top management of the company to understand its own business and even harder
for an outsider to follow such widespread activities. Since WAM places a premium
on understanding the Funds' investments, when possible WAM talks to top
management directly. That is easier to do with smaller firms.

  Under normal market conditions, each Fund invests at least 65% of its total
assets, at market value at the time of investment, in companies with total stock
market capitalizations of $1 billion or less. The dollar value of the
capitalization range may change as overall market capitalization ranges change.
The Funds are not required to sell a security that grows to a size greater than
$1 billion.

  Looking for high quality companies. The Funds look for quality businesses,
with each investment ideally resting on a solid tripod of growth potential,
financial strength, and fundamental value. Not all of the companies in which the
Funds invest necessarily have all of these characteristics.

<PAGE>
 
  The sources of growth may be a growing marketplace for the company's product,
good design, efficient manufacturing, sound marketing, or good profit margins.
Financial strength means low debt, adequate working capital, and conservative
accounting principles. Strong capitalization gives management the stability and
flexibility to reach strategic objectives. In economies with less well-developed
capital markets than those of the U.S., a strong balance sheet is an essential
component of competitive advantage. Fundamental value means low relative price.
The existence of a good company does not necessarily make its stock a good buy.
The price of a stock determines value as measured relative to dividends,
earnings, cash flow, growth rate, book value, and economic replacement value of
assets. The emphasis on fundamentals in relation to price sets U.S. Small Cap
and International Small Cap apart from pure "growth" or "value" funds.
    
  WAM also believes that finding and understanding high quality companies is
important because investing in smaller companies involves relatively higher
investment costs. One way to reduce these costs is to invest with a long-term
time horizon (at least 2-5 years) and to avoid frequent turnover of the stocks
held by the Funds. Occasionally, however, securities purchased on a long-term
basis may be sold within 12 months after purchase in light of a change in the
circumstances of a particular company or industry, or in general market or
economic conditions.

  Investment themes.  To find long-term investments and reduce its rate of
turnover, the Funds seek out areas of the economy that they believe will benefit
from favorable long-term economic and political trends. These areas of emphasis
may change from time to time, and are usually related to identified investment
themes or market niches. A small company frequently can carve out a specialized
niche for itself. The niche can be geographic, like that of a regional bank or
community newspaper. It can be technological, based on patents and know-how.
Sometimes the niche is a marketing technique. In international investing, the
niche can be participation in a fast-growth economy. A well-run business in a
growing country has an easier path to a high growth rate.      

  The Funds invest primarily in equity securities, including common and
preferred stocks, warrants or other similar rights, and convertible securities.
The Funds may purchase foreign securities in the form of American Depository
Receipts (ADRs), European Depository Receipts (EDRs), or other securities
representing underlying shares of foreign issuers. The Funds may also invest in
any other type of security, including debt securities.

  Under normal market conditions, International Small Cap will generally invest
at least 65% of its total assets, taken at market value, in foreign securities.
The foreign securities in which the Funds invest may be traded in mature markets
and in emerging markets. Each Fund's investment restrictions do not require it
to invest in a minimum or maximum number of countries; however, state insurance
laws may impose diversification or other requirements on the Funds' foreign
investing. The Funds may invest without limit in corporate or government
obligations or hold cash or cash equivalents if WAM determines that a temporary
defensive position is advisable. If investments in foreign securities appear to
be relatively unattractive because of current or anticipated adverse political
or economic conditions, International Small Cap may hold cash or invest any
portion of its assets in securities of the U.S. government, its agencies and
instrumentalities, and equity and debt securities of U.S. companies, as a
temporary defensive strategy. The Funds use various techniques to increase or
decrease its exposure to the effects of possible changes in security prices,
currency exchange rates, or other factors that affect the value of a Fund's
portfolio. These techniques include buying and selling options, futures

<PAGE>
 
contracts, or options on futures contracts, or entering into currency exchange
contracts or swap agreements.

  The investment objective of either U.S. Small Cap and International Small Cap
may be changed by the Board of Trustees without shareholder approval. If there
were such a change, investors should consider whether that Fund would remain an
appropriate investment in light of then current financial position and needs.
The Funds are not intended, alone or together, to present a balanced investment
program.


                  Securities, Investment Practices, and Risks

The following pages contain more detailed information about types of investments
the Funds may make, and strategies WAM may employ in pursuit of each Fund's
investment objective, including information about the risks and restrictions
associated with these instrument types and investment practices. All policies
stated throughout this prospectus, other than those identified as fundamental,
can be changed without shareholder approval. A complete statement of each Fund's
investment restrictions is included in the SAI. Policies and limitations are
considered at the time of purchase; the sale of instruments is not required
because of a subsequent change in circumstances.

  WAM may not buy all of these instruments or use all of these techniques to the
full extent permitted unless it believes that doing so will help a Fund achieve
its goal.

  Common stocks represent an equity (ownership) interest in a corporation. This
ownership interest often gives a Fund the right to vote on measures affecting
the company's organization and operations. Although common stocks have a history
of long-term growth in value, their prices tend to fluctuate in the short term.

  U.S. Small Cap and International Small Cap invest mostly in the securities of
smaller companies, that is, companies with a total common stock market
capitalization of less than $1 billion at the time of the initial investment.
During some periods, the securities of small companies, as a class, have
performed better than the securities of large companies, and in some periods
they have performed worse. Stocks of small companies tend to be more volatile
and less liquid than stocks of large companies. Small companies, as compared
with larger companies, may have a shorter history of operations, may not have as
great an ability to raise additional capital, may have a less diversified
product line making them susceptible to market pressure, and may have a smaller
public market for their shares.

  Restrictions:  Neither Fund may acquire securities of any one issuer which at
the time of investment (a) represent more than 10% of the voting securities of
the issuer or (b) have a value greater than 10% of the value of the outstanding
securities of the issuer./*/

Foreign Securities

Investments in foreign securities provide opportunities different from those
available in the U.S., and risks which in some ways may be greater than in U.S.
investments. International investing

- -----------------
/*/  These restrictions are "fundamental," which means that they cannot be
changed without shareholder approval.

<PAGE>
 
allows greater diversification and provides an ability to take advantage of
changes in foreign economies and market conditions. From time to time, many
foreign economies have grown faster than the U.S. economy, and the returns on
investments in these countries have exceeded those of similar U.S. investments,
although there can be no assurance that these conditions will continue.
    
  Investors should understand and consider carefully the greater risks involved
in foreign investing. Investing in foreign securities, positions in which are
generally denominated in foreign currencies, and utilization of forward foreign
currency exchange contracts involve certain risks and opportunities not
typically associated with investing in U.S. securities. These include:
fluctuations in exchange rates of foreign currencies; imposition of exchange
control regulation or currency restrictions that would prevent cash from being
brought back to the United States; less public information with respect to
issuers of securities; less governmental supervision of stock exchanges,
securities brokers, and issuers of securities; lack of uniform accounting,
auditing and financial reporting standards; lack of uniform settlement periods
and trading practices; less liquidity and frequently greater price volatility in
foreign markets than in the United States; possible imposition of foreign taxes;
possible investment in securities of companies in developing as well as
developed countries; and sometimes less advantageous legal, operational, and
financial protections applicable to foreign sub-custodial arrangements. In
addition, the costs of investing in foreign securities are higher than the cost
of investing in U.S. securities.      

  Investing in countries outside the U.S. also involves political risk. A
foreign government might restrict investments by foreigners, expropriate assets,
seize or nationalize foreign bank deposits or other assets, establish exchange
controls, or enact other policies that could affect investment in these nations.
Economies in individual markets may differ favorably or unfavorably from the
U.S. economy in such respects as growth of gross domestic product, rates of
inflation, currency depreciation, capital reinvestment, resource self-
sufficiency and balance of payments positions. Many emerging market countries
have experienced extremely high rates of inflation for many years. That has had
and may continue to have side effects on the economies and securities markets of
those countries.

  The securities markets of emerging countries are substantially smaller, less
developed, less liquid, and more volatile than the securities markets of the
United States and other more developed countries. Disclosure and regulatory
standards are in many respects less stringent than in the U.S. There also may be
a lower level of monitoring and regulation in emerging markets of traders,
insiders, and investors. Enforcement of existing regulations has been extremely
limited.

  The Funds may invest in ADRs that are not sponsored by the issuer of the
underlying security. To the extent the Fund does so, it would probably bear its
proportionate share of the expenses of the depository and might have greater
difficulty in receiving copies of the issuer's shareholder communications than
would be the case with a sponsored ADR.

  The Funds may invest in securities purchased on a when-issued and delayed
delivery basis. Although the payment terms of these securities are established
at the time a Fund enters into the commitment, the securities may be delivered
and paid for a month or more after the date of purchase, when their value may
have changed. A Fund will make such commitments only with the intention of
actually acquiring the securities, but may sell the securities before settlement
date if WAM considers it advisable for investment reasons.
<PAGE>
 
  Restrictions:  Under normal market conditions, International Small Cap invests
at least 65% of its total assets in foreign securities.  U.S. Small Cap will
generally invest at least 65% of its total assets in domestic securities.

Managing Investment Exposure

The Funds use various techniques to increase or decrease their exposure to the
effects of possible changes in security prices, currency exchange rates or other
factors that affect the value of the Funds' portfolios.  These techniques
include buying and selling options, futures contracts, or options on futures
contracts, or entering into currency exchange contracts or swap agreements.

  These techniques are used by WAM to adjust the risk and return characteristics
of the Funds' portfolios.  If WAM judges market conditions incorrectly or
employs a strategy that does not correlate well with a Fund's investments, or if
the counterparty to the transaction does not perform as promised, the
transaction could result in a loss.  Use of these techniques may increase the
volatility of a Fund and may involve a small investment of cash relative to the
magnitude of the risk assumed.  These techniques are used by the Funds for
hedging, risk management or portfolio management purposes and not for
speculation.
    
  Currency exchange transactions.  A currency exchange transaction may be
conducted either on a spot (i.e., cash) basis at the spot rate for purchasing or
selling currency prevailing in the foreign exchange market or through a forward
currency exchange contract ("forward contract").  A forward contract is an
agreement to purchase or sell a specified currency at a specified future date
(or within a specified time period) and price set at the time of the contract.
Forward contracts are usually entered into with banks, foreign exchange dealers
or broker-dealers, are not exchange-traded and are usually for less than one
year, but may be renewed.      
<PAGE>
 
  Currency exchange transactions may involve currencies of the different
countries in which the Funds may invest, and serve as hedges against possible
variations in the exchange rate between these currencies.  The Funds' currency
transactions are limited to transaction hedging and portfolio hedging involving
either specific transactions or actual or anticipated portfolio positions.
Transaction hedging is the purchase or sale of a forward contract with respect
to a specific receivable or payable of a Fund accruing in connection with the
purchase or sale of portfolio securities.  Portfolio hedging is the use of a
forward contract with respect to an actual or anticipated portfolio security
position denominated or quoted in a particular currency.  The Funds may engage
in portfolio hedging with respect to the currency of a particular country in
amounts approximating actual or anticipated positions in securities denominated
in such currency.  When a Fund owns or anticipates owning securities in
countries whose currencies are linked, WAM may aggregate such positions as to
the currency hedged.  Although forward contracts may be used to protect a Fund
from adverse currency movements, the use of such hedges may reduce or eliminate
the potentially positive effect of currency revaluations on that Fund's total
return.

  Options and futures.  Each Fund may enter into stock index or currency futures
contracts (or options thereon) to hedge a portion of that Fund's portfolio, to
provide an efficient means of regulating the Fund's exposure to the equity
markets, or as a hedge against changes in prevailing levels of currency exchange
rates.  Each Fund may write covered call options and purchase put and call
options on foreign currencies, securities, and stock indices.  Futures contracts
and options can be highly volatile.  A Fund's attempt to use such investments
for hedging purposes may not be successful and could result in reduction of that
Fund's total return.

  Restrictions:  A Fund will not use futures contracts for speculation, and will
limit its use of futures contracts so that no more than 5% of that Fund's total
assets would be committed to initial margin deposits or premiums on such
contracts.  The aggregate market value of each Fund's currencies or portfolio
securities covering call or put options will not exceed 10% of that Fund's net
assets.

Debt Securities

Bonds and other debt instruments are methods for an issuer to borrow money from
investors.  The issuer pays the investor a fixed or variable rate of interest,
and must repay the amount borrowed at maturity.  Debt securities have varying
degrees of quality and varying levels of sensitivity to changes in interest
rates.

  "Investment grade" debt securities are those rated within the four highest
ratings categories of Standard & Poor's Corporation ("S&P") or Moody's Investors
Services, Inc. ("Moody's") or, if unrated, determined by WAM to be of comparable
quality.  Securities rated BBB or Baa are considered to be medium grade and to
have speculative characteristics.  Investment in non-investment grade debt
securities is speculative and involves a high degree of risk.

  Lower-rated debt securities (commonly called "junk bonds") are often
considered speculative and involve greater risk of default or price changes due
to changes in the issuer's creditworthiness.  The market prices of these
securities may fluctuate more than higher-rated securities and may decline
significantly in periods of general economic difficulty.

  Money market instruments are high-quality, short-term debt securities that
present minimal credit risk.  These instruments may carry fixed or variable
interest rates and are called cash equivalents.

  U.S. Small Cap may invest without limit in corporate or government
obligations, or hold cash or cash equivalents if WAM determines that a temporary
defensive position is advisable.  If investments in foreign securities appear to
be relatively unattractive because of current or anticipated adverse political
or economic conditions, International Small Cap may hold cash or invest any
portion of its assets in securities of the U.S. government, its agencies or
instrumentalities, and equity and debt securities of U.S. companies, as a
temporary defensive strategy.  To meet liquidity needs (which, under normal
market conditions, are not expected to exceed 25% of its total assets) or for
temporary defensive purposes, each Fund may hold cash in domestic and foreign
currencies and may invest in domestic and foreign money market securities.

  Restrictions:  There are no restrictions on the ratings of debt securities
owned by the Funds or the portion of a Fund's assets that may be invested in
debt securities in a particular ratings category, except that neither Fund may
invest more than 20% of its assets in securities rated below investment grade or
considered by WAM to be of comparable credit quality. Neither Fund expects to
invest more than 5% of its net assets in such securities during the current
fiscal year.
<PAGE>
 
Illiquid and Restricted Securities

Some investments may be determined by WAM to be illiquid, which means that they
may be difficult to sell promptly at an acceptable price.  Other securities,
such as securities acquired in private placements, may be sold only in
compliance with certain legal restrictions.  Difficulty in selling securities
may result in delays or a loss, or may be costly to the Fund.

  Restrictions:  Neither Fund may purchase a security if, as a result, more than
15% of its net assets would be invested in illiquid or restricted securities./*/

Lending and Repurchase Agreements

The Funds generally may not make loans, but will invest in repurchase
agreements.  A repurchase agreement involves a sale of securities to a Fund in
which the seller agrees to repurchase the securities at a higher price, which
includes an amount representing interest on the purchase price, within a
specified time.  In the event of bankruptcy of the seller the Fund could
experience both losses and delays in liquidating its collateral.

  Restrictions:  Neither Fund may make loans, but this restriction shall not
prevent a Fund from (a) buying a part of an issue of bonds, debentures, or other
obligations that are publicly distributed, or from investing up to an aggregate
of 15% of its total assets (taken at market value at the time of each purchase)
in parts of issues of bonds, debentures or other obligations of a type privately
placed with financial institutions, (b) investing in repurchase agreements, or
(c) lending portfolio securities,/**/ provided that it may not lend securities
if, as a result, the aggregate value of all securities loaned would exceed 33%
of its total assets (taken at market value at the time of such loan)./*/

Diversification

The Fund's investment portfolio is well diversified to reduce risk.

  Restrictions:  Neither Fund may, with respect to 75% of its total assets,
invest more than 5% of its total assets in the securities of any one issuer.
Neither Fund may invest more than 25% of its total assets in any one industry.
This limitation does not apply to U.S. government securities./*/

Other Investment Companies

Certain markets are closed in whole or in part to equity investments by
foreigners.  The Funds may be able to invest in such markets solely or primarily
through governmentally-authorized investment companies.

  Investment in another investment company may involve the payment of a premium
above the value of the issuer's portfolio securities, and is subject to market
availability.  In the case of a purchase of shares of such a company in a public
offering, the purchase price may include an underwriting spread.  The Funds do
not intend to invest in other investment companies unless, in the judgment of
WAM, the potential benefits of such investment justify the payment of any
applicable premium or sales charge.  As a shareholder in an investment company,
a Fund would bear its ratable share of that investment company's expenses,
including its advisory and administration fees.  At the same time the Fund would
continue to pay its own management fees and other expenses.

  Restrictions:  A Fund generally may invest up to 10% of its assets in shares
of other investment companies and up to 5% of its assets in any one investment
company (in each case measured at the time of investment).  No investment in
another investment company may represent more than 3% of the outstanding stock
of the acquired investment company at the time of investment.

State Insurance Restrictions

The Funds are sold to the Life Companies in connection with Variable Contracts,
and will seek to be available under Variable Contracts sold in a number of
jurisdictions.  Certain states have regulations or guidelines concerning
concentration of investments and other investment techniques.  If applied to the
Funds, the Funds may be limited in their ability to engage in certain techniques
and to manage their portfolios with the flexibility provided herein.  In order
to permit a Fund to be available under Variable Contracts sold in certain
states, each Fund may make commitments that are more restrictive than the
investment policies and limitations described above and in the statement of
additional information.  If a Fund determines that such a commitment is no
longer in the Fund's best interests, the commitment may be revoked by
terminating the availability of the Fund to Variable Contract owners residing in
such states.

                          Organization and Management

Organization

U.S. Small Cap and International Small Cap are series of Wanger Advisors Trust,
an open-end, management investment company.  The Trust is a Massachusetts
business trust organized under an agreement and declaration of trust dated
August 30, 1994.  Each share of a Fund is entitled to participate pro rata in
any dividends and other distributions declared by the Board of Trustees with
respect to that Fund, and all shares of a Fund have equal rights in the event of
liquidation of that Fund.

  The Trust is governed by a Board of Trustees, which is responsible for
protecting the interests of the shareholders of the Funds.  The Trustees are
experienced executives and professionals who meet at regular intervals to
oversee the activities of the Trust and the Funds, review contractual
arrangements with companies that provide services to the Funds and the Trust,
and review performance.

- -----------------
/*/   These restrictions are "fundamental," which means that they cannot be
changed without shareholder approval.
/**/  The Funds have no present intention of lending their portfolio securities.
<PAGE>
 
  The Trust may hold special meetings of shareholders.  These meetings may be
called to elect or remove Trustees, change fundamental policies, approve a
management contract, or for other purposes.  The Funds will mail proxy materials
in advance, including a voting card and information about the proposals to be
voted on.  (The Trust is not required to hold annual meetings of shareholders
and does not intend to do so.)  For further information on the rights of
shareholders of the Funds, see "Availability of the Funds and Shareholder
Rights" below.

Management
    
The Funds are managed by Wanger Asset Management, L.P., 227 West Monroe Street,
Suite 3000, Chicago, Illinois 60606, which chooses the Funds' investments and
handles their business affairs under the direction of the Board of Trustees.
WAM is a limited partnership managed by its general partner, Wanger Asset
Management, Ltd., controlled by Ralph Wanger.  WAM manages approximately $5.6
billion in assets.  WAM employs a team approach to management of the Funds.  The
management teams are comprised of a lead portfolio manager, other WAM portfolio
managers and research analysts.  Team members share responsibility for providing
ideas, information and knowledge in managing the Funds, with each team member
having one or more particular areas of expertise applicable to the management of
the Funds.  Daily decisions on portfolio selection rest with the lead portfolio
manager who utilizes the input and advice of the management team in making
purchase and sale determinations.

  Ralph Wanger is the president of WAM and its chief investment strategist. He
is also the chairman of the board of trustees of the Trust.  Mr. Wanger is also
lead portfolio manager of Acorn Fund and chief investment strategist of Acorn
Investment Trust (Acorn Fund, Acorn International and Acorn USA).  Mr. Wanger
has been president and a member of the board of Acorn Fund and its predecessor
since 1970.  He is a principal of WAM and was a principal of Acorn Fund's prior
adviser until July 1992.

  Marcel P. Houtzager is a vice president of the Trust, and is the lead manager
of International Small Cap.  A specialist in foreign equities, Mr. Houtzager
joined WAM as an investment analyst in April 1992, becoming a principal in 1995.
Mr. Houtzager is also a vice president of Acorn Investment Trust.

  Robert A. Mohn is a vice president of the Trust and is the lead portfolio
manager of U.S. Small Cap.  Mr. Mohn is also a vice president of Acorn
Investment Trust, and the lead manager of Acorn USA.  Mr. Mohn has been a key
member of WAM's domestic analytical team since August 1992, and a principal of
WAM since July 1995.

  Charles P. McQuaid is a member of the management team of U.S. Small Cap. Mr.
McQuaid is a trustee and senior vice president of the Trust. He is also a
trustee and senior vice president of Acorn Investment Trust, and is a co-manager
of Acorn Fund. Mr. McQuaid has been a principal of WAM since July 1992 and
before that date was a principal of Acorn's prior investment adviser. He has
worked with Mr. Wanger for 19 years.

  Terence M. Hogan, another member of the U.S. Small Cap team, is a vice
president of the Trust. He is also a vice president of Acorn Investment Trust,
and is a co-manager of Acorn Fund. He has been a principal of WAM since July
1992 and was an analyst with Acorn's prior investment adviser before that date.
Mr. Hogan has spent 11 years working with Mr. Wanger.

  Leah J. Zell is a member of International Small Cap's management team and is a
vice president of the Trust. Ms. Zell is also a vice president of Acorn
Investment Trust, and is the lead manager of Acorn International. She has been a
principal of WAM since July 1992 and was an analyst with Acorn's prior
investment adviser before that date. Ms. Zell has been working with Mr. Wanger
for 13 years.

  Merrillyn J. Kosier, vice president, Bruce H. Lauer, vice president and
treasurer, and Paula L. Rogers, vice president and secretary, are the other
executive officers of the Trust.

  State Street Bank and Trust Company is each Fund's transfer agent, shareholder
servicing agent and custodian.

Distributor

Shares of the Funds are offered for sale through WAM Brokerage Services, L.L.C.
("WAM BD") without any sales commission or charges to the Funds or Life
Companies or Retirement Plans purchasing Fund shares.  However, each Variable
Contract imposes its own charges and fees on owners of Variable Contracts and
Retirement Plans may impose such charges on participants in a Retirement Plan.
WAM BD is wholly-owned by WAM, the Funds' investment adviser, and the investment
adviser's general partner, Wanger Asset Management, Ltd.  WAM BD's address is
227 West Monroe Street, Suite 3000, Chicago, Illinois 60606.  All distribution
and promotional expenses relating to the Funds are paid by WAM, including the
payment or reimbursement of any expenses incurred by WAM BD.    

Expenses

Like all mutual funds, U.S. Small Cap and International Small Cap pay expenses
related to their daily operations.  Expenses paid out of each Fund's assets are
reflected in its share price or dividends.

  Each Fund pays a management fee to WAM for managing its investments and
business affairs, as set forth under "Expenses and Performance."  While the
management fee is a significant component of each Fund's annual operating costs,
the Funds have other expenses as well.  Each Fund pays the fees of its
custodian, transfer agents, auditors and lawyers.  It also pays other expenses
such as the cost of compliance with federal and state laws, proxy solicitations,
shareholder reports, taxes, insurance premiums, and the fees of Trustees who are
not otherwise affiliated with the Trust or WAM.

  Additional expenses are incurred under the Variable Contracts and the
Retirement Plans.  These expenses are not described in this prospectus; Variable
Contract owners and Retirement Plan participants should consult the Variable
Contract disclosure documents or Retirement Plan information regarding these
expenses.

  From time to time, WAM may pay amounts from its past profits to Life Companies
or other organizations that provide administrative services for the Funds or
that provide to owners of Variable Contracts and/or participants in Retirement
Plans other services relating to the Funds. These services may include, among
other things:  sub-accounting services; answering inquiries regarding the Funds;
transmitting, on behalf of the Funds, proxy statements, shareholder reports,
updated prospectuses and other communications regarding the Funds; and such
other related services as the Funds, owners of Variable Contracts, and/or
participants in Retirement Plans may request.  The amount of any such payment
will be determined by the nature and extent of the services provided by the Life
Company or other organization.  Payment of such amounts by WAM will not increase
the fees paid by the Funds or their shareholders.

Availability of the Funds and
Shareholder Rights

Shares of the Funds will be sold only to separate accounts of Life Companies,
and to certain Retirement Plans as described under "Investing in the Funds --
Who May Invest."  The Trustees of the Trust may refuse to sell shares of the
Funds to any person, or suspend or terminate the offering of shares if such
action is required by law or by regulatory authorities having jurisdiction or
is, in the sole discretion of the Trustees acting in good faith and in light of
their fiduciary duties under federal and any applicable state laws, necessary in
the best interests of the shareholders of the Funds.

  Each Fund offers its shares to (i) Variable Contracts (including variable
annuity and variable life insurance contracts) offered through Life Companies
which may or may not be affiliated with each other and (ii) Retirement Plans.
Due to differences in tax treatment and other considerations, the interests of
various Variable Contract owners and Retirement Plan participants may conflict.
The Board of Trustees of the Trust will monitor the Funds for any material
conflicts that may arise and will determine what action, if any, should be
taken.  If a conflict occurs, the Board of Trustees may require one or more Life
Companies' separate accounts and/or Retirement Plans to withdraw its investments
in the Funds.  As a result, a Fund may be forced to sell securities at
disadvantageous prices.  In addition, the Board of Trustees may refuse to sell
shares of the Funds to any Variable Contract or Retirement Plan or may suspend
or terminate the offering of shares of the Funds if such action is required by
law or regulatory authority or is in the best interests of the shareholders of
the Funds.

  Pursuant to current interpretations of the Investment Company Act of 1940, as
amended, the Life Companies will solicit voting instructions from Variable
Contract owners with respect to any matters that are presented to a vote of
shareholders.  The exercise of voting rights on shares held by Retirement Plans
will be governed by the terms of such Retirement Plans.  Some Retirement Plans
may pass-through voting to plan participants.  Shares held by other Retirement
Plans may be voted by the trustees of the  Retirement Plan or by a named
fiduciary or an investment manager.  Retirement Plan participants should consult
their plan documents for information.

  On any matter submitted to a vote of shareholders, all shares of the Trust
then issued and outstanding and entitled to vote shall be voted in the aggregate
and not by Fund, except for matters concerning only one Fund.  Certain matters
approved by a vote of shareholders of one Fund of the Trust may not be binding
on a Fund whose shareholders have not approved such matters.  The holder of each
share of the Trust shall be entitled to one vote for each full share and a
fractional vote for each fractional share of stock.  Shares of one Fund may not
bear the same economic relationship to the Trust as shares of another Fund.

<PAGE>
 
                              Dividends and Taxes

Each Fund intends to continue to qualify as a regulated investment company under
Subchapter M of the Internal Revenue Code of 1986, as amended ("Code").  As
such, a Fund is not subject to federal income tax on that part of its investment
company taxable income (consisting generally of net investment income, net gains
from certain foreign currency transactions, and net realized short-term capital
gain, if any) and any net realized capital gain (the excess of net realized
long-term capital gain over net realized short-term capital loss) that it
distributes to its shareholders.  It is the intention of each Fund to distribute
all such income and gains.

  All dividends are distributed to the separate accounts and to the Retirement
Plans and will be automatically reinvested in Trust shares.   Dividends and
distributions made by the Funds to the separate accounts are taxable, if at all,
to the Life Companies; they are not taxable to Variable Contract owners.
Dividends and distributions made by the Funds to the Retirement Plans are not
taxable to the Retirement Plans or to the participants thereunder.

  For a discussion of the taxation of the Life Companies and separate accounts,
as well as the tax treatment of the Variable Contracts and the owners thereof,
see the disclosure documents for the Variable Contracts.  For information
regarding the taxation of Retirement Plans as well as the participants
thereunder, see the plan administrator and plan documents for the Retirement
Plan.  Prospective investors are urged to consult their tax advisers.
   
  Each Fund intends to comply with the diversification requirements imposed by
Section 817(h) of the Code and the regulations thereunder.  These requirements
are in addition to the diversification requirements imposed on each Fund by
Subchapter M of the Code and the 1940 Act.  Section 817(h) places certain
limitations on the assets of a separate account that may be invested in
securities of a single issuer, and, because Section 817(h) and the regulations
thereunder treat a Fund's assets as assets of the related separate account,
these limitations also apply to the Fund's assets that may be invested in
securities of a single issuer.  Generally, the regulations provide that, as of
the end of each calendar quarter, or within 30 days thereafter, no more than 55%
of a Fund's total assets may be represented by any one investment, no more than
70% by any two investments, no more than 80% by any three investments, and no
more than 90% by any four investments.  For purposes of Section 817(h), all
securities of the same issuer, all interests in the same real property project,
and all interests in the same commodity are treated as a single investment.
Generally, compliance by the Funds with the requirements of Section 817(h) and
the regulations thereunder is not prevented by reason of the fact that shares in
a Fund may be held by the trustee of a qualified pension or other retirement
plan.  Failure of a Fund to satisfy the Section 817(h) requirements could result
in adverse tax consequences to the Life Companies and Variable Contract owners.
The foregoing is only a summary of some of the important federal income tax
considerations generally affecting the Funds and their shareholders; see the SAI
for additional discussion.    

<PAGE>
 
  Wanger Advisors Trust



 
Trustees 

Fred D. Hasselbring         
Charles P. McQuaid                           
P. Michael Phelps
James A. Star
Ralph Wanger
 
Officers    

Ralph Wanger, President              
Marcel P. Houtzager, Vice President  
Robert A. Mohn, Vice President  
Charles P. McQuaid, Senior Vice President
Terence M. Hogan, Vice President  
Leah J. Zell, Vice President
Merrillyn J. Kosier, Vice President
Bruce H. Lauer, Vice President and Treasurer
Paula L. Rogers, Vice President and Secretary
Kenneth A. Kalina, Assistant Treasurer
 
Transfer Agent,
Dividend Disbursing Agent
and Custodian

State Street Bank
and Trust Company
Attention:
Wanger Advisors Trust
P.O. Box 8502
Boston, Massachusetts
02266-8502

Investment Advisor
Wanger Asset
Management, L.P.
227 West Monroe Street
Suite 3000
Chicago, Illinois 60606
1-800-4-WANGER
(1-800-492-6437)

Legal Counsel
Bell, Boyd & Lloyd
Chicago, Illinois

Auditors
Ernst & Young LLP
Chicago, Illinois
<PAGE>
 
                                                           WANGER ADVISORS TRUST

                                                                    STATEMENT OF
                                                                      ADDITIONAL
                                                                     INFORMATION

                                                                  April 30, 1997

                                                          227 West Monroe Street
                                                        Chicago, Illinois 60606
                                                      Telephone:  1-800-4-WANGER
                                                    ____________________________

WANGER U.S. SMALL CAP
WANGER INTERNATIONAL SMALL CAP
<TABLE>
<CAPTION>
 
 
                               TABLE OF CONTENTS
                               -----------------
<S>                                                         <C>
 
                                                            Page
                                                              --
 
INFORMATION ABOUT THE FUNDS....................................2
INVESTMENT OBJECTIVES AND POLICIES.............................2
INVESTMENT TECHNIQUES AND RISKS................................2
INVESTMENT RESTRICTIONS.......................................15
PERFORMANCE INFORMATION.......................................18
INVESTMENT ADVISER............................................19
DISTRIBUTOR...................................................21
THE TRUST.....................................................21
TRUSTEES AND OFFICERS; CERTAIN SHAREHOLDERS...................22
PURCHASING AND REDEEMING SHARES...............................25
ADDITIONAL TAX INFORMATION....................................26
PORTFOLIO TRANSACTIONS........................................27
CUSTODIAN.....................................................28
INDEPENDENT AUDITORS..........................................29
APPENDIX.....................................................A-1
</TABLE>

This Statement of Additional Information ("SAI") is not a prospectus but
provides information that should be read in conjunction with the prospectus of
Wanger Advisors Trust dated April 30, 1997 and any supplement thereto, which may
be obtained from the Trust at no charge by writing or telephoning Wanger Asset
Management, L.P., the Trust's investment adviser, at the address or telephone
number shown above.

                                       1
<PAGE>
 
                          INFORMATION ABOUT THE FUNDS

Wanger U.S. Small Cap ("U.S. Small Cap") and Wanger International Small Cap
("International Small Cap") (each, a "Fund"; together, the "Funds") are series
of Wanger Advisors Trust (the "Trust"). Both Funds are currently available only
for allocation to certain life insurance company ("Life Company") separate
accounts established for the purpose of funding certain qualified and non-
qualified variable annuity contracts ("Variable Contracts"), and may also be
offered directly to certain types of pension plans and retirement arrangements
and accounts permitting the accumulation of funds on a tax-deferred basis
("Retirement Plans"), as described in the prospectus.

The Trust's 1996 annual report, a copy of which accompanies this SAI, contains
audited financial statements, notes thereto, supplementary information entitled
"Financial Highlights," and a report of independent auditors, all of which (but
no other part of the annual report) are incorporated into this SAI by reference.
Additional copies of the annual report may be obtained without charge by writing
or telephoning Wanger Asset Management, L.P. at the address or telephone number
shown on the cover page of this SAI.

The discussion below supplements the description in the prospectus of the Funds'
investment objectives, policies, and restrictions.


                      INVESTMENT OBJECTIVES AND POLICIES

U.S. Small Cap and International Small Cap invest with the objective of long-
term growth of capital.  Although income is considered by U.S. Small Cap in the
selection of securities, the Funds are not designed for investors seeking
primarily income rather than capital appreciation.  Both Funds are managed by
Wanger Asset Management, L.P. ("WAM").

The Funds use the techniques and invest in the types of securities described
below and in the prospectus.


                        INVESTMENT TECHNIQUES AND RISKS

Foreign Securities

The Funds invest in foreign securities, which may entail a greater degree of
risk (including risks relating to exchange rate fluctuations, tax provisions, or
expropriation of assets) than does investment in securities of domestic issuers.
Under normal market conditions, International Small Cap invests at least 65% of
its total assets, taken at market value, in foreign securities. U.S. Small Cap
does not have a current intention to invest more than 5% of its net assets in
foreign securities.

                                       2
<PAGE>
 
The Funds may invest in securities of foreign issuers directly or in the form of
American Depositary Receipts (ADRs), European Depositary Receipts (EDRs), or
other securities representing underlying shares of foreign issuers. Positions in
these securities are not necessarily denominated in the same currency as the
common stocks into which they may be converted. ADRs are receipts typically
issued by an American bank or trust company evidencing ownership of the
underlying securities. EDRs are European receipts evidencing a similar
arrangement. Generally, ADRs, in registered form, are designed for use in the
U.S. securities markets and EDRs, in bearer form, are designed for use in
European securities markets. A Fund may invest in both "sponsored" and
"unsponsored" ADRs. In a sponsored ADR, the issuer typically pays some or all of
the expenses of the depository and agrees to provide its regular shareholder
communications to ADR holders. An unsponsored ADR is created independently of
the issuer of the underlying security. The ADR holders generally pay the
expenses of the depository and do not have an undertaking from the issuer of the
underlying security to furnish shareholder communications. Neither Fund expects
to invest more than 5% of its total assets in unsponsored ADRs.

A Fund's investment performance is affected by the strength or weakness of the
U.S. dollar against the currencies of the foreign markets in which the Fund's
securities trade or in which they are denominated.  For example, if the dollar
falls in value relative to the Japanese yen, the dollar value of a yen-
denominated stock held in the portfolio will rise even though the price of the
stock remains unchanged.  Conversely, if the dollar rises in value relative to
the yen, the dollar value of the yen-denominated stock will fall.  (See the
discussion of transaction hedging and portfolio hedging under "Currency Exchange
Transactions.")
    
Investors should understand and consider carefully the risks involved in foreign
investing. Investing in foreign securities, positions in which are generally
denominated in foreign currencies, and utilization of forward foreign currency
exchange contracts involve risks and opportunities not typically associated with
investing in U.S. securities. These considerations include: fluctuations in
exchange rates of foreign currencies; possible imposition of exchange control
regulation or currency restrictions that would prevent cash from being brought
back to the United States; less public information with respect to issuers of
securities; less governmental supervision of stock exchanges, securities
brokers, and issuers of securities; lack of uniform accounting, auditing, and
financial reporting standards; lack of uniform settlement periods and trading
practices; less liquidity and frequently greater price volatility in foreign
markets than in the United States; possible imposition of foreign taxes;
possible investments in securities of companies in developing as well as
developed countries; and sometimes less advantageous legal, operational, and
financial protections applicable to foreign sub-custodial arrangements.      

Although the Funds try to invest in companies and governments of countries
having stable political environments, there is the possibility of expropriation
or confiscatory taxation, seizure or nationalization of foreign bank deposits or
other assets, establishment of exchange controls, the adoption of foreign
government restrictions, or other adverse political, social, or diplomatic
developments that could affect investment in these nations.

                                       3
<PAGE>
 
Currency Exchange Transactions
    
The Funds may enter into currency exchange transactions. A currency exchange
transaction may be conducted either on a spot (i.e., cash) basis at the spot
rate for purchasing or selling currency prevailing in the foreign exchange
market or through a forward currency exchange contract ("forward contract"). A
forward contract is an agreement to purchase or sell a specified currency at a
specified future date (or within a specified time period) and price set at the
time of the contract. Forward contracts are usually entered into with banks,
foreign exchange dealers or broker-dealers, are not exchange traded, and are
usually for less than one year, but may be renewed.      

Forward currency transactions may involve currencies of the different countries
in which the Funds may invest, and serve as hedges against possible variations
in the exchange rate between these currencies. The Funds' currency transactions
are limited to transaction hedging and portfolio hedging involving either
specific transactions or portfolio positions, except to the extent described
below under "Synthetic Foreign Money Market Positions." Transaction hedging is
the purchase or sale of a forward contract with respect to specific payables or
receivables of a Fund accruing in connection with the purchase or sale of
portfolio securities. Portfolio hedging is the use of a forward contract with
respect to a portfolio security position denominated or quoted in a particular
currency. The Funds may engage in portfolio hedging with respect to the currency
of a particular country in amounts approximating actual or anticipated positions
in securities denominated in that currency. When either Fund owns or anticipates
owning securities in countries whose currencies are linked, WAM may aggregate
such positions as to the currency hedged.

If a Fund enters into a forward contract hedging an anticipated purchase of
portfolio securities, liquid assets of that Fund, such as cash, U.S. government
securities, or other liquid high grade debt obligations, having a value equal to
the Fund's commitment under such forward contract will be segregated on the
books of the Fund and held by the custodian while the contract is outstanding.

At the maturity of a forward contract to deliver a particular currency, a Fund
may either sell the portfolio security related to such contract and make
delivery of the currency, or it may retain the security and either acquire the
currency on the spot market or terminate its contractual obligation to deliver
the currency by purchasing an offsetting contract with the same currency trader
obligating it to purchase on the same maturity date the same amount of the
currency.

It is impossible to forecast with absolute precision the market value of
portfolio securities at the expiration of a forward contract. Accordingly, it
may be necessary for a Fund to purchase additional currency on the spot market
(and bear the expense of such purchase) if the market value of the security is
less than the amount of currency that the Fund is obligated to deliver and if a
decision is made to sell the security and make delivery of the currency.
Conversely, it may be necessary to sell on the spot market some of the currency
received upon the sale of the portfolio security if its market value exceeds the
amount of currency that the Fund is obligated to deliver.

                                       4
<PAGE>
 
If a Fund retains the portfolio security and engages in an offsetting
transaction, that Fund will incur a gain or a loss to the extent that there has
been movement in forward contract prices. If the Fund engages in an offsetting
transaction, it may subsequently enter into a new forward contract to sell the
currency. Should forward prices decline during the period between a Fund's
entering into a forward contract for the sale of a currency and the date it
enters into an offsetting contract for the purchase of the currency, the Fund
will realize a gain to the extent the price of the currency it has agreed to
sell exceeds the price of the currency it has agreed to purchase. Should forward
prices increase, a Fund will suffer a loss to the extent the price of the
currency it has agreed to purchase exceeds the price of the currency it has
agreed to sell. A default on the contract would deprive the Fund of unrealized
profits or force the Fund to cover its commitments for purchase or sale of the
currency, if any, at the current market price.

Hedging against a decline in the value of a currency does not eliminate
fluctuations in the prices of portfolio securities or prevent losses if the
prices of such securities decline. Such transactions also preclude the
opportunity for gain if the value of the hedged currency should rise. Moreover,
it may not be possible for a Fund to hedge against a devaluation that is so
generally anticipated that the Fund is not able to contract to sell the currency
at a price above the devaluation level it anticipates. The cost to a Fund of
engaging in currency exchange transactions varies with such factors as the
currency involved, the length of the contract period, and prevailing market
conditions. Because currency exchange transactions are usually conducted on a
principal basis, no fees or commissions are involved.

Synthetic Foreign Money Market Positions. The Funds may invest in money market
instruments denominated in foreign currencies. In addition to, or in lieu of,
such direct investment, the Funds may construct a synthetic foreign money market
position by (a) purchasing a money market instrument denominated in one
currency, generally U.S. dollars, and (b) concurrently entering into a forward
contract to deliver a corresponding amount of that currency in exchange for a
different currency on a future date and at a specified rate of exchange. For
example, a synthetic money market position in Japanese yen could be constructed
by purchasing a U.S. dollar money market instrument, and entering concurrently
into a forward contract to deliver a corresponding amount of U.S. dollars in
exchange for Japanese yen on a specified date and at a specified rate of
exchange. Because of the availability of a variety of highly liquid short-term
U.S. dollar money market instruments, a synthetic money market position
utilizing such U.S. dollar instruments may offer greater liquidity than direct
investment in foreign money market instruments. The results of a direct
investment in a foreign currency and a concurrent construction of a synthetic
position in such foreign currency, in terms of both income yield and gain or
loss from changes in currency exchange rates, in general should be similar, but
would not be identical because the components of the alternative investments
would not be identical. Except to the extent a synthetic foreign money market
position consists of a money market instrument denominated in a foreign
currency, the synthetic foreign money market position shall not be deemed a
"foreign security" for purposes of the policies that, under normal conditions,
(a) U.S. Small Cap will generally invest at least 65% of its total assets in
domestic securities, and (b) International Small Cap will generally invest at
least 65% of its total assets in foreign securities.

                                       5
<PAGE>
 
Options and Futures

The Funds may purchase and write both call options and put options on securities
and on indexes, and enter into interest rate and index futures contracts, and
may purchase or sell options on such futures contracts ("futures options") in
order to provide additional revenue, or to hedge against changes in security
prices or interest rates. The Funds may also use other types of options, futures
contracts and futures options currently traded or subsequently developed and
traded, provided the Board of Trustees determines that their use is consistent
with the Funds' investment objective.
    
Options. An option on a security (or index) is a contract that gives the
purchaser (holder) of the option, in return for a premium, the right to buy from
(call) or sell to (put) the seller (writer) of the option the security
underlying the option (or the cash value of the index) at a specified exercise
price at any time during the term of the option (normally not exceeding nine
months). The writer of an option on an individual security or on a foreign
currency has the obligation upon exercise of the option to deliver the
underlying security or foreign currency upon payment of the exercise price or to
pay the exercise price upon delivery of the underlying security or foreign
currency. Upon exercise, the writer of an option on an index is obligated to pay
the difference between the cash value of the index and the exercise price
multiplied by the specified multiplier for the index option. (An index is
designed to reflect specified facets of a particular financial or securities
market, a specific group of financial instruments or securities, or certain
economic indicators.)      

The Funds will write call options and put options only if they are "covered."
For example, in the case of a call option on a security, the option is "covered"
if a Fund owns the security underlying the call or has an absolute and immediate
right to acquire that security without additional cash consideration (or, if
additional cash consideration is required, cash or cash equivalents in such
amount are held in a segregated account by its custodian) upon conversion or
exchange of other securities held in its portfolio.

If an option written by a Fund expires, that Fund realizes a capital gain equal
to the premium received at the time the option was written.  If an option
purchased by a Fund expires, that Fund realizes a capital loss equal to the
premium paid.

Prior to the earlier of exercise or expiration, an option may be closed out by
an offsetting purchase or sale of an option of the same series (type, exchange,
underlying security or index, exercise price and expiration).  There can be no
assurance, however, that a closing purchase or sale transaction can be effected
when a Fund desires.

A Fund will realize a capital gain from a closing purchase transaction if the
cost of the closing option is less than the premium received from writing the
option, or, if it is more, the Fund will realize a capital loss.  If the premium
received from a closing sale transaction is more than the premium paid to
purchase the option, the Fund will realize a capital gain or, if it is less, the
Fund will realize a capital loss.  The principal factors affecting the market
value of a put or a call

                                       6
<PAGE>

option include supply and demand, interest rates, the current market price of
the underlying security or index in relation to the exercise price of the
option, the volatility of the underlying security or index, and the time
remaining until the expiration date.

A put or call option purchased by a Fund is an asset of that Fund, valued
initially at the premium paid for the option. The premium received for an option
written by a Fund is recorded as a deferred credit. The value of an option
purchased or written is marked-to-market daily and is valued at the closing
price on the exchange on which it is traded or, if not traded on an exchange or
no closing price is available, at the mean between the last bid and asked
prices.
    
OTC Derivatives. The Funds may buy and sell over-the-counter ("OTC") derivatives
(derivatives not traded on exchange). Unlike exchange-traded derivatives, which
are standardized with respect to the underlying instrument, expiration date,
contract size, and strike price, the terms of OTC derivatives generally are
established through negotiation with the other party to the contract. While this
type of arrangement allows the Funds greater flexibility to tailor an instrument
to their needs, OTC derivatives generally involve greater credit risk than
exchange-traded derivatives, which are guaranteed by the clearing organization
of the exchanges where they are traded. Each Fund will limit its investments so
that no more than 5% of its total assets will be placed at risk in the use of
OTC derivatives. See "Illiquid Securities" below for more information on the
risks associated with investing in OTC derivatives.      

Risks Associated with Options. There are several risks associated with
transactions in options. For example, there are significant differences among
the securities markets, the currency markets, and the options markets that could
result in an imperfect correlation among these markets, causing a given
transaction not to achieve its objectives. A decision as to whether, when, and
how to use options involves the exercise of skill and judgment, and even a well-
conceived transaction may be unsuccessful to some degree because of market
behavior or unexpected events.

There can be no assurance that a liquid market will exist when a Fund seeks to
close out an option position. If a Fund were unable to close out an option that
it had purchased on a security, it would have to exercise the option in order to
realize any profit or the option would expire and become worthless. If a Fund
were unable to close out a covered call option that it had written on a
security, it would not be able to sell the underlying security until the option
expired. As the writer of a covered call option on a security, a Fund forgoes,
during the option's life, the opportunity to profit from increases in the market
value of the security covering the call option above the sum of the premium and
the exercise price of the call. As the writer of a covered call option on a
foreign currency, a Fund foregoes, during the option's life, the opportunity to
profit from currency appreciation.

If trading was suspended in an option purchased or written by one of the Funds,
that Fund would not be able to close out the option. If restrictions on exercise
were imposed, the Fund might be unable to exercise an option it had purchased.

                                       7
<PAGE>

     
Futures Contracts and Options on Futures Contracts. The Funds may use interest
rate futures contracts and index futures contracts. An interest rate or index
futures contract provides for the future sale by one party and purchase by
another party of a specified quantity of a financial instrument or the cash
value of an index/1/ at a specified price and time. A public market exists in
futures contracts covering a number of indexes (including, but not limited to:
the Standard & Poor's 500 Index; the Value Line Composite Index; the Russell
2000 Index; and the New York Stock Exchange Composite Index) as well as
financial instruments (including, but not limited to: U.S. Treasury bonds; U.S.
Treasury notes; Eurodollar certificates of deposit; and foreign currencies).
Other index and financial instrument futures contracts are available and it is
expected that additional futures contracts will be developed and traded.      

The Funds may purchase and write call and put futures options. Futures options
possess many of the same characteristics as options on securities and indexes
(discussed above). A futures option gives the holder the right, in return for
the premium paid, to assume a long position (call) or short position (put) in a
futures contract at a specified exercise price at any time during the period of
the option. Upon exercise of a call option, the holder acquires a long position
in the futures contract and the writer is assigned the opposite short position.
In the case of a put option, the opposite is true.

To the extent required by regulatory authorities having jurisdiction over the
Funds, the Funds will limit their use of futures contracts and futures options
to hedging transactions. For example, the Funds might use futures contracts to
hedge against fluctuations in the general level of stock prices, anticipated
changes in interest rates, or currency fluctuations that might adversely affect
either the value of a Fund's securities or the price of the securities that a
Fund intends to purchase. The Funds' hedging may include sales of futures
contracts as an offset against the effect of expected declines in stock prices
or currency exchange rates or increases in interest rates and purchases of
futures contracts as an offset against the effect of expected increases in stock
prices or currency exchange rates or declines in interest rates. Although other
techniques could be used to reduce the Funds' exposure to stock price, interest
rate, and currency fluctuations, the Funds may be able to hedge their exposure
more effectively and perhaps at a lower cost by using futures contracts and
futures options.

The success of any hedging technique depends on WAM correctly predicting changes
in the level and direction of stock prices, interest rates, currency exchange
rates, and other factors. Should those predictions be incorrect, a Fund's return
might have been better had hedging not been attempted; however, in the absence
of the ability to hedge, WAM might have taken portfolio actions in anticipation
of the same market movements with similar investment results but, presumably, at
greater transaction costs.

- ----------------
/1/  A futures contract on an index is an agreement pursuant to which two
parties agree to take or make delivery of an amount of cash equal to the
difference between the value of the index at the close of the last trading day
of the contract and the price at which the index contract was originally
written.  Although the value of a securities index is a function of the value of
certain specified securities, no physical delivery of those securities is made.

                                       8
<PAGE>

     
When a purchase or sale of a futures contract is made by a Fund, that Fund is
required to deposit with its custodian (or broker, if legally permitted) a
specified amount of cash or U.S. government securities or other securities
acceptable to the broker ("initial margin"). The margin required for a futures
contract is generally set by the exchange on which the contract is traded;
however, the margin requirement may be modified during the term of the contract,
and the Fund's broker may require margin deposits in excess of the minimum
required by the exchange. The initial margin is in the nature of a performance
bond or good faith deposit on the futures contract, which is returned to the
Fund upon termination of the contract, assuming all contractual obligations have
been satisfied. The Funds expect to earn interest income on their initial margin
deposits. A futures contract held by a Fund is valued daily at the official
settlement price of the exchange on which it is traded. Each day the Fund pays
or receives cash, called "variation margin," equal to the daily change in value
of the futures contract. This process is known as "marking-to-market." Variation
margin paid or received by a Fund does not represent a borrowing or loan by the
Fund but is instead settlement between that Fund and the broker of the amount
one would owe the other if the futures contract had expired at the close of the
previous day. In computing daily net asset value, the Funds will mark-to-market
their open futures positions.      

The Funds are also required to deposit and maintain margin with respect to put
and call options on futures contracts they write. Such margin deposits will vary
depending on the nature of the underlying futures contract (and the related
initial margin requirements), the current market value of the option, and other
futures positions held by the Funds.

Although some futures contracts call for making or taking delivery of the
underlying securities, usually these obligations are closed out prior to
delivery by offsetting purchases or sales of matching futures contracts (same
exchange, underlying security or index, and delivery month). If an offsetting
purchase price is less than the original sale price, the Funds realize a capital
gain, or if it is more, the Funds realize a capital loss. Conversely, if an
offsetting sale price is more than the original purchase price, the Fund
engaging in the transaction realizes a capital gain, or if it is less, the Fund
realizes a capital loss. The transaction costs must also be included in these
calculations.

Risks Associated with Futures. There are several risks associated with the use
of futures contracts and futures options as hedging techniques. A purchase or
sale of a futures contract may result in losses in excess of the amount invested
in the futures contract. There can be no guarantee that there will be a
correlation between price movements in the hedging vehicle and in the portfolio
securities being hedged. In addition, there are significant differences between
the securities and futures markets that could result in an imperfect correlation
between the markets, causing a given hedge not to achieve its objectives. The
degree of imperfection of correlation depends on circumstances such as:
variations in speculative market demand for futures, futures options, and the
related securities, including technical influences in futures and futures
options trading and differences between the Funds' investments being hedged and
the securities underlying the standard contracts available for trading. For
example, in the case of index futures contracts, the composition of the index,
including the issuers and the weighting of each issue, may differ from the
composition of a Fund's portfolio, and, in the case of interest rate futures

                                       9
<PAGE>
 
contracts, the interest rate levels, maturities, and creditworthiness of the
issues underlying the futures contract may differ from the financial instruments
held in a Fund's portfolio. A decision as to whether, when, and how to hedge
involves the exercise of skill and judgment, and even a well-conceived hedge may
be unsuccessful to some degree because of market behavior or unexpected stock
price or interest rate trends.

Futures exchanges may limit the amount of fluctuation permitted in certain
futures contract prices during a single trading day. The daily limit establishes
the maximum amount that the price of a futures contract may vary either up or
down from the previous day's settlement price at the end of the current trading
session. Once the daily limit has been reached in a futures contract subject to
the limit, no more trades may be made on that day at a price beyond that limit.
The daily limit governs only price movements during a particular trading day and
therefore does not limit potential losses because the limit may work to prevent
the liquidation of unfavorable positions. For example, futures prices have
occasionally moved to the daily limit for several consecutive trading days with
little or no trading, thereby preventing prompt liquidation of positions and
subjecting some holders of futures contracts to substantial losses. Stock index
futures contracts are not normally subject to such daily price change
limitations.

There can be no assurance that a liquid market will exist at a time when a Fund
seeks to close out a futures or futures option position. The Fund would be
exposed to possible loss on the position during the interval of inability to
close, and would continue to be required to meet margin requirements until the
position is closed. In addition, many of the contracts discussed above are
relatively new instruments without a significant trading history. As a result,
there can be no assurance that an active secondary market will develop or
continue to exist.

Limitations on Options and Futures. A Fund will not enter into a futures
contract or purchase an option thereon if, immediately thereafter, the initial
margin deposits for futures contracts held by that Fund plus premiums paid by it
for open futures option positions, less the amount by which any such positions
are "in-the-money,"/2/ would exceed 5% of the Fund's total assets.

When purchasing a futures contract or writing a put option on a futures
contract, a Fund must maintain with its custodian (or broker, if legally
permitted) cash or cash equivalents (including any margin) equal to the market
value of such contract. When writing a call option on a futures contract, a Fund
similarly will maintain with its custodian cash or cash equivalents (including
any margin) equal to the amount by which such option is in-the-money until the
option expires or is closed out by the Fund.

A Fund may not maintain open short positions in futures contracts, call options
written on futures contracts, or call options written on indexes if, in the
aggregate, the market value of all such open

- ----------------

/2/  A call option is "in-the-money" if the value of the futures contract
that is the subject of the option exceeds the exercise price. A put option is
"in-the-money" if the exercise price exceeds the value of the futures contract
that is the subject of the option.

                                      10
<PAGE>
 
positions exceeds the current value of the securities in its portfolio, plus or
minus unrealized gains and losses on the open positions, adjusted for the
historical relative volatility of the relationship between the portfolio and the
positions. For this purpose, to the extent a Fund has written call options on
specific securities in its portfolio, the value of those securities will be
deducted from the current market value of the securities portfolio.

In order to comply with Commodity Futures Trading Commission Regulation 4.5 and
thereby avoid being deemed a "commodity pool operator," the "underlying
commodity value" of each long position in a commodity contract in which a Fund
invests will not at any time exceed the sum of:

     (1)  The value of short-term U.S. debt obligations or other U.S. dollar
          denominated high-quality short-term money market instruments and cash
          set aside in an identifiable manner, plus any funds deposited as
          margin on the contract;

     (2)  Unrealized appreciation on the contract held by the broker; and

     (3)  Cash proceeds from existing investments due in not more than 30 days.

"Underlying commodity value" means the size of the contract multiplied by the
daily settlement price of the contract.

Each Fund's options and futures transactions are also subject to certain non-
fundamental investment restrictions set forth under "Investment Restrictions" in
this SAI.  Moreover, neither Fund will purchase puts, calls, straddles, spreads,
or any combination thereof if by reason of such purchase more than 10% of that
Fund's total assets would be invested in such securities.

SWAP AGREEMENTS.  A swap agreement is generally individually negotiated and
structured to include exposure to a variety of different types of investments or
market factors.  Depending on its structure, a swap agreement may increase or
decrease a Fund's exposure to changes in the value of an index of securities in
which the Fund might invest, the value of a particular security or group of
securities, or foreign currency values. Swap agreements can take many different
forms and are known by a variety of names.  A Fund may enter into any form of
swap agreement if WAM determines it is consistent with the Fund's investment
objective and policies, but each Fund will limit its use of swap agreements so
that no more than 5% of its total assets will be placed at risk.

A swap agreement tends to shift the Fund's investment exposure from one type of
investment to another.  For example, if the Fund agrees to exchange payments in
dollars at a fixed rate for payments in a foreign currency the amount of which
is determined by movements of a foreign securities index, the swap agreement
would tend to increase the Fund's exposure to foreign stock market movements and
foreign currencies.  Depending on how it is used, a swap agreement may increase
or decrease the overall volatility of the Fund's investments and its net asset
value.

The performance of a swap agreement is determined by the change in the specific
currency, market index, security, or other factors that determine the amounts of
payments due to and from the Fund.  

                                       11
<PAGE>
 
If a swap agreement calls for payments by the Fund, the Fund must be prepared to
make such payments when due. If the counterparty's creditworthiness declines,
the value of a swap agreement would be likely to decline, potentially resulting
in a loss. The Fund expects to be able to eliminate its exposure under any swap
agreement either by assignment or by other disposition, or by entering into an
offsetting swap agreement with the same party or a similarly creditworthy party.

The Fund will segregate liquid assets (such as cash, U.S. government securities,
or other liquid high grade debt obligations) of the Fund to cover its current
obligations under swap agreements. If the Fund enters into a swap agreement on a
net basis, it will segregate assets with a daily value at least equal to the
excess, if any, of the Fund's accumulated obligations under the swap agreement
over the accumulated amount the Fund is entitled to receive under the agreement.
If the Fund enters into a swap agreement on other than a net basis, it will
segregate assets with a value equal to the full amount of the Fund's accumulated
obligations under the agreement.

Illiquid Securities
    
A Fund may not invest in illiquid securities, including restricted securities
and OTC derivatives, if as a result they would comprise more than 15% of the
value of the net assets of the Fund.

Restricted securities may be sold only in privately negotiated transactions or
in a public offering with respect to which a registration statement is in effect
under the Securities Act of 1933 (the "1933 Act"). Where registration is
required, a Fund may be obligated to pay all or part of the registration
expenses and a considerable period may elapse between the time of the decision
to sell and the time the Fund may be permitted to sell a security under an
effective registration statement. If, during such a period, adverse market
conditions were to develop, the Fund might obtain a less favorable price than
prevailed when it decided to sell. Restricted securities will be priced at fair
value as determined in good faith by the Board of Trustees. If through the
appreciation of illiquid securities or the depreciation of liquid securities,
either U.S. Small Cap or International Small Cap should be in a position where
more than 15% of the value of its net assets is invested in illiquid assets,
including restricted securities and OTC derivatives, that Fund will take
appropriate steps to protect liquidity.      

Notwithstanding the foregoing, a Fund may purchase securities that have been
privately placed but that are eligible for purchase and sale under Rule 144A
under the 1933 Act. That rule permits certain qualified institutional buyers,
such as the Funds, to trade in privately placed securities that have not been
registered for sale under the 1933 Act. WAM, under the supervision of the Board
of Trustees, will consider whether securities purchased under Rule 144A are
illiquid and thus subject to a Fund's restriction of investing no more than 15%
of its assets in illiquid securities. A determination of whether a Rule 144A
security is liquid or not is a question of fact. In making this determination
WAM will consider the trading markets for the specific security taking into
account the unregistered nature of a Rule 144A security. In addition, WAM could
consider the (1) frequency of trades and quotes, (2) number of dealers and
potential purchasers, (3) dealer undertakings to make a market, and (4) nature
of the security and of market place trades (e.g., the time needed to dispose of
the security, the method of soliciting offers and the mechanics of transfer).
The liquidity of Rule 144A securities will be monitored and if, as a result of
changed

                                      12
<PAGE>
 
conditions, it is determined that a Rule 144A security is no longer liquid, the
Funds' holdings of illiquid securities would be reviewed to determine what, if
any, steps are required to assure that a Fund does not invest more than 15% of
its assets in illiquid securities. Investing in Rule 144A securities could have
the effect of increasing the amount of a Fund's assets invested in illiquid
securities if qualified institutional buyers are unwilling to purchase such
securities.

Debt Securities

The Funds may invest in debt securities, including lower-rated securities (i.e.,
securities rated BB or lower by Standard & Poor's Corporation ("S&P") or Ba or
lower by Moody's Investor Services, Inc. ("Moody's"), commonly called "junk
bonds"), and securities that are not rated. There are no restrictions as to the
ratings of debt securities acquired by the Funds or the portion of a Fund's
assets that may be invested in debt securities in a particular ratings category
except that neither Fund will invest more than 20% of its assets in securities
rated below investment grade or considered by WAM to be of comparable credit
quality. Neither Fund expects to invest more than 5% of its net assets in such
securities during the current fiscal year.

Securities rated BBB or Baa are considered to be medium grade and to have
speculative characteristics. Lower-rated debt securities are predominantly
speculative with respect to the issuer's capacity to pay interest and repay
principal. Investment in medium- or lower-quality debt securities involves
greater investment risk, including the possibility of issuer default or
bankruptcy. An economic downturn could severely disrupt the market for such
securities and adversely affect the value of such securities. In addition, 
lower-quality bonds are less sensitive to interest rate changes than higher-
quality instruments and generally are more sensitive to adverse economic changes
or individual corporate developments. During a period of adverse economic
changes, including a period of rising interest rates, the junk bond market may
be severely disrupted, and issuers of such bonds may experience difficulty in
servicing their principal and interest payment obligations.

Medium- and lower-quality debt securities may be less marketable than higher-
quality debt securities because the market for them is less broad. The market
for unrated debt securities is even narrower. During periods of thin trading in
these markets, the spread between bid and asked prices is likely to increase
significantly, and a Fund may have greater difficulty selling its portfolio
securities. See "Net Asset Value." The market value of these securities and
their liquidity may be affected by adverse publicity and investor perceptions. A
more complete description of the characteristics of bonds in each ratings
category is included in the appendix to this SAI.

Repurchase Agreements

Repurchase agreements are transactions in which a Fund purchases a security from
a bank or recognized securities dealer and simultaneously commits to resell that
security to the bank or dealer at an agreed-upon price, date, and market rate of
interest unrelated to the coupon rate or maturity of the purchased security.
Although repurchase agreements carry certain risks not associated with direct
investments in securities, a Fund will enter into repurchase agreements

                                      13
<PAGE>
 
only with banks and dealers believed by WAM to present minimum credit risks in
accordance with guidelines approved by the board of trustees. WAM will review
and monitor the creditworthiness of such institutions, and will consider the
capitalization of the institution, WAM's prior dealings with the institution,
any rating of the institution's senior long-term debt by independent rating
agencies, and other relevant factors.

A Fund will invest only in repurchase agreements collateralized at all times in
an amount at least equal to the repurchase price plus accrued interest. To the
extent that the proceeds from any sale of such collateral upon a default in the
obligation to repurchase were less than the repurchase price, the Fund would
suffer a loss. If the financial institution which is party to the repurchase
agreement petitions for bankruptcy or otherwise becomes subject to bankruptcy or
other liquidation proceedings there may be restrictions on a Fund's ability to
sell the collateral and the Fund could suffer a loss. However, with respect to
financial institutions whose bankruptcy or liquidation proceedings are subject
to the U.S. Bankruptcy Code, each Fund intends to comply with provisions under
such Code that would allow it immediately to resell such collateral.

When-Issued and Delayed Delivery Securities

The Funds may purchase securities on a when-issued or delayed delivery basis.
Although the payment and interest terms of these securities are established at
the time the Fund enters into the commitment, the securities may be delivered
and paid for a month or more after the date of purchase, when their value may
have changed. A Fund makes such commitments only with the intention of actually
acquiring the securities, but may sell the securities before the settlement date
if WAM deems it advisable for investment reasons. A Fund may utilize spot and
forward foreign currency exchange transactions to reduce the risk inherent in
fluctuations in the exchange rate between one currency and another when
securities are purchased or sold on a when-issued or delayed delivery basis.

At the time a Fund enters into a binding obligation to purchase securities on a
when-issued or delayed delivery basis, liquid assets of the Fund having a value
at least as great as the purchase price of the securities to be purchased will
be segregated on the books of the Fund and held by the custodian throughout the
period of the obligation. The use of these investment strategies, as well as any
borrowing by a Fund, may increase net asset value fluctuation.

Temporary Strategies

The Funds have the flexibility to respond promptly to changes in market and
economic conditions. In the interest of preserving shareholders' capital, WAM
may employ a temporary defensive investment strategy if it determines such a
strategy to be warranted. Pursuant to such a defensive strategy, a Fund
temporarily may hold cash (U.S. dollars, foreign currencies, multinational
currency units) and/or invest up to 100% of its assets in high quality debt
securities or money market instruments of U.S. or foreign issuers, and most or
all of the Fund's investments may be made in the United States and denominated
in U.S. dollars. It is impossible to predict whether, when, or for how long a
Fund might employ defensive strategies.

                                      14
<PAGE>
 
In addition, pending investment of proceeds from new sales of Fund shares or to
meet ordinary daily cash needs, a Fund temporarily may hold cash (U.S. dollars,
foreign currencies, or multinational currency units) and may invest any portion
of its assets in money market instruments.

Portfolio Turnover

Although the Funds do not purchase securities with a view to rapid turnover,
there are no limitations on the length of time that portfolio securities must be
held. Portfolio turnover can occur for a number of reasons such as general
conditions in the securities markets, more favorable investment opportunities in
other securities, or other factors relating to the desirability of holding or
changing a portfolio investment. The Funds' anticipated portfolio turnover rates
are less than 100% for each Fund. A high rate of portfolio turnover, if it
should occur, would result in increased transaction expenses which must be borne
by each Fund.


                            INVESTMENT RESTRICTIONS
 

In pursuing their investment objectives, U.S. Small Cap and International Small
Cap each will not:

     1. With respect to 75% of the value of the Fund's total assets, invest more
     than 5% of its total assets (valued at the time of investment) in
     securities of a single issuer, except securities issued or guaranteed by
     the government of the U.S., or any of its agencies or instrumentalities;

     2. Acquire securities of any one issuer that at the time of investment (a)
     represent more than 10% of the voting securities of the issuer or (b) have
     a value greater than 10% of the value of the outstanding securities of the
     issuer;

     3. Invest more than 25% of its assets (valued at the time of investment) in
     securities of companies in any one industry;

     4. Make loans, but this restriction shall not prevent the Fund from (a)
     buying a part of an issue of bonds, debentures, or other obligations that
     are publicly distributed, or from investing up to an aggregate of 15% of
     its total assets (taken at market value at the time of each purchase) in
     parts of issues of bonds, debentures or other obligations of a type
     privately placed with financial institutions, (b) investing in repurchase
     agreements, or (c) lending portfolio securities, provided that it may not
     lend securities if, as a result, the aggregate value of all securities
     loaned would exceed 33% of its total assets (taken at market value at the
     time of such loan);/3/

- ----------------
/3/  The Funds have no present intention of lending their portfolio securities.

                                      15
<PAGE>
 
     5. Borrow money except (a) from banks for temporary or emergency purposes
     in amounts not exceeding 33% of the value of the Fund's total assets at the
     time of borrowing, and (b) in connection with transactions in options,
     futures and options on futures;/4/

     6. Underwrite the distribution of securities of other issuers; however, the
     Fund may acquire "restricted" securities which, in the event of a resale,
     might be required to be registered under the Securities Act of 1933 on the
     ground that the Fund could be regarded as an underwriter as defined by that
     act with respect to such resale; but the Fund will limit its total
     investment in restricted securities and in other securities for which there
     is no ready market, including repurchase agreements maturing in more than
     seven days, to not more than 15% of its net assets at the time of
     acquisition;

     7. Purchase and sell real estate or interests in real estate, although it
     may invest in marketable securities of enterprises which invest in real
     estate or interests in real estate;

     8. Purchase and sell commodities or commodity contracts, except that it may
     enter into (a) futures and options on futures and (b) forward contracts;

     9. Make margin purchases of securities, except for use of such short-term
     credits as are needed for clearance of transactions and except in
     connection with transactions in options, futures and options on futures;

     10.  Issue any senior security except to the extent permitted under the
     Investment Company Act of 1940.

Restrictions 1 through 10 above are "fundamental," which means that they cannot
be changed without the approval of the lesser of (i) 67% of the Fund's shares
present at a meeting if more than 50% of the shares outstanding are present or
(ii) more than 50% of the Fund's outstanding shares.

In addition, each Fund is subject to a number of restrictions that may be
changed by the Board of Trustees without shareholder approval.  Under those non-
fundamental restrictions, each Fund will not:

     (a)  Invest in companies for the purpose of management or the exercise of
     control;

     (b)  Invest in oil, gas or other mineral leases or exploration or
     development programs, although it may invest in marketable securities of
     enterprises engaged in oil, gas or mineral exploration;

- ----------------
/4/  State insurance laws currently restrict a Fund's borrowings to
facilitate redemptions to no more than 25% of the Fund's net assets.

                                       16
<PAGE>
 
     (c)  Invest more than 10% of its net assets (valued at the time of
     investment) in warrants, valued at the lower of cost or market; provided
     that warrants acquired in units or attached to securities shall be deemed
     to be without value for purposes of this restriction;

     (d)  Invest more than 5% of its total assets (valued at time of investment)
     in securities of issuers with less than three years' operation (including
     predecessors);

     (e)  Acquire securities of other registered investment companies except in
     compliance with the Investment Company Act of 1940 and applicable state
     law;

     (f)  Purchase or retain securities of a company if all of the Trustees,
     directors and officers of the Trust and of WAM who individually own
     beneficially more than 1/2% of the securities of the company collectively
     own beneficially more than 5% of such securities;

     (g)  Pledge, mortgage or hypothecate its assets, except as may be necessary
     in connection with permitted borrowings or in connection with short sales,
     options, futures and options on futures;

     (h)  Purchase a put or call option if the aggregate premiums paid for all
     put and call options exceed 20% of its net assets (less the amount by which
     any such positions are in-the-money), excluding put and call options
     purchased as closing transactions;

     (i)  Sell securities short or maintain a short position.

Notwithstanding the foregoing investment restrictions, either Fund may purchase
securities pursuant to the exercise of subscription rights, provided that such
purchase will not result in the Fund's ceasing to be a diversified investment
company.  Japanese and European corporations frequently issue additional capital
stock by means of subscription  rights offerings to existing shareholders at a
price substantially below the market price of the shares.  The failure to
exercise such rights would result in a Fund's interest in the issuing company
being diluted.  The market for such rights is not well developed in all cases
and, accordingly, the Fund may not always realize full value on the sale of
rights.  The exception applies in cases where the limits set forth in the
investment restrictions would otherwise be exceeded by exercising rights or
would have already been exceeded as a result of fluctuations in the market value
of the Fund's portfolio securities with the result that the Fund would be forced
either to sell securities at a time when it might not otherwise have done so, or
to forego exercising the rights.

In addition, pursuant to state insurance laws, each Fund is subject to the
following guidelines, which may also be changed by the Trustees:

     (a)  Each Fund will be invested in a minimum of five different foreign
     countries at all times, except that this minimum is reduced to four when
     foreign country investments comprise less than 80% of the value of the
     Fund's net assets; to three when less than 60% of such value; to two when
     less than 40%; and to one when less than 20%.

                                       17
<PAGE>
 
     (b)  Each Fund will have no more than 20% of its net assets invested in
     securities of issuers located in any one country; except that a Fund may
     have an additional 15% of its net assets invested in securities of issuers
     located in any one of the following countries:  Australia; Canada; France;
     Japan; the United Kingdom; or Germany.

     (c)  A Fund may not acquire the securities of any issuer if, as a result of
     such investment, more than 10% of the Fund's total assets would be invested
     in the securities of any one issuer, except that this restriction shall not
     apply to U.S. Government securities or foreign government securities; and
     the Fund will not invest in a security if, as a result of such investment,
     it would hold more than 10% of the outstanding voting securities of any one
     issuer.

     (d)  Each Fund may borrow no more than 10% of the value of its net assets
     when borrowing for any general purpose and 25% of net assets when borrowing
     as a temporary measure to facilitate redemptions.

                                 PERFORMANCE INFORMATION
 
From time to time the Funds may quote total return figures. "Total Return" for a
period is the percentage change in value during the period of an investment in
shares of a Fund, including the value of shares acquired through reinvestment of
all dividends and capital gains distributions.  "Average Annual Total Return" is
the average annual compounded rate of change in value represented by the Total
Return for the period.

Average Annual Total Return is computed as follows:
 
                      n
     ERV   =   P(1 +T)
 
     Where:    P  =  the amount of an assumed initial investment in shares of a 
                     Fund
               T  =  average annual total return
               n  =  number of years from initial investment to the end of the 
                     period
 
     ERV  =  ending redeemable value of shares held at the end of the period
    
     For example, as of December 31, 1996 the Total Return and Average Total
Return on a $1,000 investment in the funds for the following periods were:
 
     U.S. Small Cap                                           Average Annual
     --------------                           Total Return     Total Return
                                              ------------    --------------

     1 year................................      46.6%             46.6%
     Life of Fund (inception 5/3/95).......      70.04%            37.4%      

                                       18
<PAGE>

     
     International Small Cap                                  Average Annual
     -----------------------                  Total Return     Total Return
                                              ------------    --------------

    1 year.................................      32.0%             32.0%
    Life of Fund (inception 5/3/95)........      77.6%             41.0%      

The Funds impose no sales charges and pay no distribution expenses.  Income
taxes are not taken into account.  Performance figures quoted by the Funds are
not necessarily indicative of future results.  Each Fund's performance is a
function of conditions in the securities markets, portfolio management, and
operating expenses.  Although information about past performance is useful in
reviewing a Fund's performance and in providing some basis for comparison with
other investment alternatives, it should not be used for comparison with other
investments using different reinvestment assumptions or time periods.  Fund
performance figures do not reflect expenses of the separate accounts of the Life
Companies, expenses imposed under the Variable Contracts, or expenses imposed by
the Retirement Plans.

In advertising and sales literature, each Fund's performance may be compared
with those of market indexes and other mutual funds.  In addition to the
performance information described above, a Fund might use comparative
performance as computed in a ranking or rating determined by Lipper Analytical
Services, Inc., an independent service that monitors the performance of over
1,000 mutual funds, Morningstar, Inc., VARDS, or another service.

The Funds may note their mention or recognition, or the mention or recognition
of WAM or its principals, in newsletters, newspapers, magazines, or other media.


                                 INVESTMENT ADVISER
 
The Funds' investment adviser, WAM, furnishes continuing investment advice to
the Funds and is responsible for overall management of the Funds' business
affairs.  It furnishes office space and all necessary office facilities,
equipment, and personnel to the Funds; it assumes all other expenses incurred by
WAM in connection with managing the assets of the Funds, including expenses in
connection with placement of securities orders, expenses in determination of
daily price computations, portfolio accounting and related bookkeeping; and
assumes the expenses of printing and distributing the Funds' prospectus and
reports to prospective investors.  At its own expense, WAM may contract with any
other person or persons to provide services in connection with daily price
computations, portfolio accounting and related bookkeeping.
    
For its services to U.S. Small Cap, WAM receives a fee accrued daily and paid
monthly at the annual rate of 1.0% of the net asset value of the Fund up to $100
million, 0.95% of the net asset value in excess of $100 million and up to $250
million, and 0.90% of the net asset value in excess of $250 million.  These fees
may be reduced by any amount necessary to cause the Fund's expenses to be within
the limitation described below.  The investment advisory fees of the Fund for
the fiscal      

                                       19
<PAGE>

     
period from May 3, 1995 to December 31, 1995 were $71,496; for the fiscal year
ended December 31, 1996, the advisory fees were $704,115.

For its services to International Small Cap,  WAM receives a fee accrued daily
and paid monthly at the annual rate of 1.30% of the net asset value of the Fund
up to $100 million, 1.20% of the net asset value in excess of $100 million and
up to $250 million, and 1.10% of the net asset value in excess of $250 million.
These fees may be reduced by any amount necessary to cause the Fund's expenses
to be within the limitation described below.  The investment advisory fees of
the Fund for the fiscal period from May 3, 1995 to December 31, 1995 were
$43,726; for the fiscal year ended December 31, 1996, the advisory fees were
$631,977.      

The Trust pays all charges of depositories, custodians and other agents for the
safekeeping and servicing of the Funds' cash, securities and other property; all
charges of the Funds' transfer agents and registrars, and the Funds' dividend
disbursing and redemption agents, if any; and all charges of independent
auditors and legal counsel.  The Trust also pays other expenses such as the cost
of qualifying and maintaining the registration of shares of the Funds and the
cost of compliance with federal and state securities laws; typesetting of the
Funds' prospectus and of printing and mailing copies of the prospectus furnished
to each then-existing shareholder or beneficial owner; printing and mailing
certificates for shares of the Funds; publishing reports and notices to the
Funds' shareholders and to governmental bodies or regulatory agencies; proxy
solicitations of the Funds or of the Board of Trustees of the Trust; shareholder
meetings; fees and taxes payable to federal, state or governmental agencies,
domestic or foreign; insurance premiums required by law or deemed advisable by
the Trust's Board of Trustees; all costs of borrowing money; all expenses of
maintaining the registration of the Trust under the Investment Company Act of
1940, all fees, dues and other expenses related to membership of the Trust in
any trade association or other investment company organization; the fees of
Trustees who are not otherwise affiliated with the Trust or WAM, and all
expenses incurred in connection with their services to the Trust.  The Trust
also pays all brokers' commissions and other charges relative to the purchase
and sale of portfolio securities for the Funds.

The investment advisory agreements require WAM to reimburse a Fund in the event
that the total annual expenses of the Fund that are payable in any fiscal year,
including the advisory fee but excluding taxes, interest, brokerage commissions
and similar fees, and certain extraordinary litigation expenses, exceed the
limits prescribed by any state in which that Fund's shares are qualified for
sale.  Total annual expenses, and the amount by which total annual expenses may
exceed these limits, will be determined as of the close of each business day of
the year.  The Trust does not believe that any such state expense limitation is
currently applicable.  If the states in which a Fund's shares are qualified for
sale impose no limits on total expenses, then WAM has voluntarily agreed to
reimburse the Fund in the event the fees and expenses payable by the Fund in any
fiscal year (as described above) exceed 1.90% for Wanger International Small Cap
and 1.50% for Wanger U.S. Small Cap of average daily net assets.  The following
items are excluded for purposes of calculating the expenses subject to this
limitation:  (i) credits, if any, that a Fund may receive that have the effect
of offsetting certain of those expenses; and (ii) the excess custodian costs
attributable to investments in foreign securities compared to the custodian
costs which would have been incurred had the investments been in domestic
securities.  Reimbursement of expenses in 

                                       20
<PAGE>
 
excess of this limitation will be made monthly and will be paid to the Fund by
reduction of WAM's advisory fee. WAM may from time to time absorb expenses for a
Fund in addition to the reimbursement of expenses in excess of applicable
limitations.

WAM advanced all of the Trust's organizational expenses, which are being
amortized and reimbursed to WAM over a five year period.
    
WAM is a limited partnership managed by its general partner, Wanger Asset
Management, Ltd., which is controlled by Ralph Wanger.  WAM commenced operations
in 1992. Ralph Wanger, Charles P. McQuaid, Terence M. Hogan, Leah J. Zell,
Marcel Houtzager and Robert A. Mohn, are limited partners of WAM.  WAM has
approximately $5.6 billion under management.


                                 DISTRIBUTOR
 
Shares of each Fund are distributed by WAM Brokerage Services, L.L.C. ("WAM BD")
under a Distribution Agreement as described in the prospectus dated April 30,
1997, which is incorporated herein by reference.  The Distribution Agreement
continues in effect from year to year, provided such continuance is approved
annually (i) by a majority of the trustees or by a majority of the outstanding
voting securities of the Trust, and (ii) by a majority of the trustees who are
not parties to the Agreement or interested persons of any such party.  Shares of
the Funds are offered for sale through WAM BD without any sales commission or
charges to the Funds or Life Companies or Retirement Plans purchasing Fund
shares.  However, each Variable Contract imposes its own charges and fees on
owners of Variable Contracts and Retirement Plans and may impose such charges on
participants in a Retirement Plan.  The Trust has agreed to pay all expenses in
connection with registration of its shares with the Securities and Exchange
Commission and in compliance with state securities laws.      


                                 THE TRUST
 
The Agreement and Declaration of Trust may be amended by a vote of either the
Trust's shareholders or its Trustees.  The Trust may issue an unlimited number
of shares, in one or more series as the Board of Trustees may authorize.  Any
such series of shares may be further divided, without shareholder approval, into
two or more classes of shares having such preferences or special or relative
rights or privileges as the Trustees may determine. The shares of the Funds are
not currently divided into classes.  U.S. Small Cap and International Small Cap
are the only series of the Trust currently being offered.  The Board of Trustees
may authorize the issuance of additional series if deemed advisable, each with
its own investment objective, policies, and restrictions.  All shares issued
will be fully paid and non-assessable and will have no preemptive or conversion
rights.

On any matter submitted to a vote of shareholders, shares are voted in the
aggregate and not by individual series except that shares are voted by
individual series when required by the Investment Company Act of 1940 or other
applicable law, or when the Board of Trustees determines that the 

                                       21
<PAGE>
 
matter affects only the interests of one series, in which case shareholders of
the unaffected series are not entitled to vote on such matters. All shares of
the Trust are voted together in the election of Trustees. Shares do not have
cumulative voting rights; accordingly, shareholders controlling voting interests
of more than 50% of shares of the Funds voting for the election of Trustees
could elect all of the Trustees if they chose to do so, and in such event,
shareholders controlling voting interests of the remaining shares would not be
able to elect any Trustees.

Shareholder rights regarding voting are described in the prospectus. These
voting rights are based on applicable federal and state laws. To the extent that
changes in such laws or regulations thereunder or interpretations thereof
eliminate the necessity to submit any such matters to a shareholder vote, or
otherwise restrict or limit such voting rights, the Trust reserves the right to
act in any manner permitted by such changes.

The Trust's Declaration of Trust disclaims liability of the shareholders,
trustees, and officers of the Trust for acts or obligations of the Trust and
requires that notice of such disclaimer be given in each agreement, obligation,
or contract entered into or executed by the Trust or the board of trustees. The
Declaration of Trust provides for indemnification out of the Trust's assets for
all losses or expenses of any shareholder held personally liable for the
obligations of the Trust. Thus, although shareholders of a business trust may,
under certain circumstances, be held personally liable under Massachusetts law
for the obligations of the trust, the risk of a shareholder incurring financial
loss on account of shareholder liability is believed to be remote because it is
limited to circumstances in which the disclaimer is inoperative and the Trust
itself is unable to meet its obligations. The risk to any one series of
sustaining a loss on account of liabilities incurred by another series is also
believed to be remote.


                  TRUSTEES AND OFFICERS; CERTAIN SHAREHOLDERS
 
The Trustees and officers of the Trust and their principal business activities
during the past five years are:
    
Ralph Wanger, trustee and president* (age 63)
     227 West Monroe Street, Suite 3000, Chicago, Illinois 60606; principal,
     Wanger Asset Management, L.P. since July 1992; prior thereto, principal,
     Harris Associates L.P.; trustee and president, Acorn Investment Trust.

Charles P. McQuaid, trustee and senior vice president* (age 44)
     227 West Monroe Street, Suite 3000, Chicago, Illinois 60606; principal,
     Wanger Asset Management, L.P. since July 1992; prior thereto, principal,
     Harris Associates L.P.; trustee and senior vice president, Acorn Investment
     Trust.

Fred D. Hasselbring, trustee (age 55)
     1338 N. Bell Avenue, Chicago, Illinois 60622; owner, Fred D. Hasselbring
     and Associates (retail industry computer systems consulting and sales). 
                                                                                

                                      22
<PAGE>
 
P. Michael Phelps, trustee (age 63)
     100 North Riverside Plaza, Chicago, Illinois 60606-1596; vice president and
     corporate secretary, Morton International, Inc.

James A. Star, trustee (age 36)
     222 N. LaSalle Street, Suite 2000, Chicago, Illinois 60601; vice president,
     Henry Crown and Company, a diversified private holding company, since
     October 1994; portfolio manager and investment analyst, Harris Associates
     L.P., June 1991 to October 1994; attorney, Kirkland and Ellis, prior to
     June 1991.

Terence M. Hogan, vice president (age 35)
     227 West Monroe Street, Suite 3000, Chicago, Illinois 60606; principal,
     analyst, and portfolio manager, Wanger Asset Management, L.P., since July
     1992; prior thereto, analyst, Harris Associates L.P.; vice president, Acorn
     Investment Trust.

Leah J. Zell, vice president (age 48)
     227 West Monroe Street, Suite 3000, Chicago, Illinois 60606; principal,
     analyst, and portfolio manager, Wanger Asset Management, L.P., since July
     1992; prior thereto, analyst, Harris Associates L.P.; vice president, Acorn
     Investment Trust.
    
Marcel P. Houtzager, vice president (age 36)
     227 West Monroe Street, Suite 3000, Chicago, Illinois 60606; principal and
     investment analyst, Wanger Asset Management, L.P. since April 1992.      

Robert A. Mohn, vice president (age 35)
     227 West Monroe Street, Suite 3000, Chicago, Illinois 60606; principal,
     analyst and portfolio manager, Wanger Asset Management, L.P. since August
     1992.

Merrillyn J. Kosier, vice president (age 37)
     227 West Monroe Street, Suite 3000, Chicago, Illinois 60606; director of
     marketing and shareholder services, Wanger Asset Management, L.P., since
     September 1993; prior thereto, vice president of marketing, Kemper
     Financial Services, Inc.; vice president and secretary, Acorn Investment
     Trust.

Bruce H. Lauer, vice president and treasurer (age 39)
     227 West Monroe Street, Suite 3000, Chicago, Illinois 60606; chief
     administrative officer, Wanger Asset Management, L.P., since April 1995;
     prior thereto, first vice president, investment accounting, Kemper
     Financial Services, Inc.; vice president and treasurer, Acorn Investment
     Trust.

                                      23
<PAGE>
 
Paula L. Rogers, vice president and secretary (age 38)
     227 West Monroe Street, Suite 3000, Chicago, Illinois 60606; vice president
     of institutional marketing, Wanger Asset Management, L.P., since June 1996;
     vice president, Goldman Sachs & Co., 1994-1996; prior thereto, second vice
     president, The Northern Trust Company.

Kenneth A. Kalina, assistant treasurer (age 37)
     227 West Monroe Street, Suite 3000, Chicago, Illinois 60603; Fund
     controller, Wanger Asset Management, L.P., since September 1995; prior
     thereto, treasurer of the Stein Roe Mutual Funds; assistant treasurer,
     Acorn Investment Trust.

*Messrs. McQuaid and Wanger are Trustees who are "interested persons" of the
Trust as defined in the Investment Company Act of 1940, and of WAM.

Messrs. McQuaid, Phelps and Wanger are members of the Executive Committee, which
has authority during intervals between meetings of the Board of Trustees to
exercise the powers of the board, with certain exceptions. Messrs. Hasselbring,
Phelps, and Star are members of the Audit Committee, which has the authority to
make recommendations to the Board of Trustees regarding the selection of
independent auditors for the Trust and to confer with the independent auditors
regarding the scope and results of each audit.
    
At March 31, 1997, the trustees and officers as a group owned beneficially
less than 1% of the outstanding shares of each of U.S. Small Cap and 
International Small Cap. At that date, Phoenix Home Life Mutual Insurance 
Company (and its affiliates), One American Row, Hartford, Connecticut 06115, was
the record holder of 5,919,345 shares (approximately 98% of the outstanding 
shares) of International Small Cap, and 9,236,333 shares (approximately 98% of 
the outstanding shares) of U.S. Small Cap, all of which are beneficially owned 
by Variable Contract owners.      

The following table shows compensation paid by the Trust during the fiscal year
ended December 31, 1996 to each Trustee of the Trust who is not an "interested
person" of the Trust or of WAM. The Trust does not pay compensation to its
officers or to Trustees who are "interested persons." The Trust does not offer
any pension or retirement benefits to its trustees.

                                      24
<PAGE>

     
<TABLE>
<CAPTION>
===========================================================================================
   Name of Person,     Aggregate Compensation   Aggregate Compensation          Total
      Position            From Wanger U.S.     From Wanger International    Compensation
                         Small Cap Advisor         Small Cap Advisor      From Fund Complex
===========================================================================================
<S>                    <C>                     <C>                        <C>
 
Fred D. Hasselbring                    $4,800                     $4,800            $ 9,600
Trustee
 
P. Michael Phelps                      $5,300                     $5,300            $10,600
Trustee
 
James A. Star                          $5,300                     $5,300            $10,600
Trustee
</TABLE>      

                        PURCHASING AND REDEEMING SHARES
 
Shares of U.S. Small Cap and International Small Cap may not be purchased or
redeemed directly by individual Variable Contract owners or individual
Retirement Plan participants. Purchases and redemptions are discussed in the
prospectus. That information is incorporated herein by reference.

For purposes of computing the net asset value of a share of either Fund, a
security traded on a securities exchange, or in an over-the-counter market in
which transaction prices are reported, is valued at the last sale price at the
time of valuation. A security for which there is no reported sale on the
valuation date is valued at the mean of the latest bid and ask quotations or, if
there is no ask quotation, at the most recent bid quotation. Securities for
which quotations are not readily available and any other assets are valued at a
fair value as determined in good faith by the Board of Trustees. Money market
instruments having a maturity of 60 days or less from the valuation date are
valued on an amortized cost basis. All assets and liabilities initially
expressed in foreign currencies are converted into U.S. dollars at a current
exchange rate.

The Funds' net asset values are determined only on days on which the New York
Stock Exchange ("NYSE") is open for trading. The NYSE is regularly closed on
Saturdays and Sundays and on New Year's Day, the third Monday in February, Good
Friday, the last Monday in May, Independence Day, Labor Day, Thanksgiving, and
Christmas. If one of these holidays falls on a Saturday or Sunday, the NYSE will
be closed on the preceding Friday or the following Monday, respectively.

Trading in the portfolio securities of the Funds may take place in various
foreign markets on certain days (such as Saturday) when the Funds are not open
for business and do not calculate their net asset values. Conversely, trading in
the Funds' portfolio securities may not occur on days when the Funds are open.
Therefore, the calculation of net asset value does not take place
contemporaneously with the determinations of the prices of many of the Funds'
portfolio securities and the value of the Funds' portfolios may be significantly
affected on days when shares of the Funds may not be purchased or redeemed.

                                      25
<PAGE>
 
Computation of net asset value (and the sale and redemption of Fund shares) may
be suspended or postponed during any period when (a) trading on the NYSE is
restricted, as determined by the Securities and Exchange Commission, or that
exchange is closed for other than customary weekend and holiday closings, (b)
the Commission has by order permitted such suspension, or (c) an emergency, as
determined by the Commission, exists making disposal of portfolio securities or
valuation of the net assets of the Funds not reasonably practicable.

The Trust has elected to be governed by Rule 18f-1 under the Investment Company
Act of 1940 pursuant to which it is obligated to redeem shares solely in cash up
to the lesser of $250,000 or 1% of the net asset value of a Fund during any 90-
day period for any one shareholder. Redemptions in excess of the above amounts
will normally be paid in cash, but may be paid wholly or partly by a
distribution in-kind of securities. If a redemption is made in kind, the
redeeming shareholder would bear any transaction costs incurred in selling the
securities received. The Agreement and Declaration of Trust also authorizes the
Trust to redeem shares under certain other circumstances as may be specified by
the Board of Trustees.


                          ADDITIONAL TAX INFORMATION
 
Shares of the Funds are offered to separate accounts of Life Companies that fund
Variable Contracts and may be offered to certain Retirement Plans, which are
pension plans and retirement arrangements and accounts permitting the
accumulation of funds on a tax-deferred basis. See the disclosure documents for
the Variable Contracts or the plan documents (including the summary plan
description) for the Retirement Plans for a discussion of the special taxation
of insurance companies with respect to the separate accounts and the Variable
Contracts, and the holders thereof, or the special taxation of Retirement Plans
and the participants therein.
    
Each Fund intends to continue to qualify for treatment as a regulated investment
company ("RIC") under the Internal Revenue Code of 1986, as amended (the
"Code"). In order to qualify for that treatment, the Fund must distribute to
shareholders for each taxable year at least 90% of its investment company
taxable income (consisting generally of net investment income, net short-term
capital gain, and net gains from certain foreign currency transactions)
("Distribution Requirement") and must meet several additional requirements.
These requirements include the following: (1) the Fund must derive at least 90%
of its gross income each taxable year from dividends, interest, payments with
respect to securities loans, and gains from the sale or other disposition of
securities or foreign currencies, or other income (including gains from options,
futures or forward contracts) derived with respect to its business of investing
in securities or currencies ("Income Requirement"); (2) the Fund must derive
less than 30% of its gross income each taxable year from the sale or other
disposition of securities, or any of the following, that were held for less than
three months -- options, futures or forward contracts (other than those on
foreign currencies), or foreign currencies (or options, futures or forward
contracts thereon) that are not directly related to the Fund's principal
business of investing in securities (or options and futures with respect
thereto) ("Short-Short Limitation"); (3) at the close of each quarter of the
Fund's taxable year, at least 50% of the value of its total assets must be
represented by cash or cash items, U.S. Government securities, securities of 
                                                                                

                                      26
<PAGE>

     
other RICs, and other securities that, with respect to any one issuer, do not
exceed 5% of the value of the Fund's total assets and that do not represent more
than 10% of the outstanding voting securities of the issuer; and (4) at the
close of each quarter of the Fund's taxable year, not more than 25% of the value
of its total assets may be invested in securities (other than U.S. Government
securities or the securities of other RICs) of any one issuer.

As noted in the prospectus, each Fund must, and intends to, comply with the
diversification requirements imposed by Section 817(h) of the Code and the
regulations thereunder. For information concerning the consequences of failure
to meet the requirements of Section 817(h), see the prospectus for the Variable
Contracts.

The Funds will not be subject to the 4% federal excise tax imposed on RICs that
do not distribute substantially all their income and gains each calendar year
because that tax does not apply to a RIC whose only shareholders are segregated
asset accounts of life insurance companies held in connection with variable
annuity contracts and/or variable life insurance policies or Retirement Plans.

The foregoing is only a general summary of some of the important federal income
tax considerations generally affecting the Funds and their shareholders. No
attempt is made to present a complete explanation of the federal tax treatment
of the Funds' activities, and this discussion and the discussion in the
prospectuses and/or statements of additional information for variable contracts
are not intended as a substitute for careful tax planning. Accordingly,
potential investors are urged to consult their own tax advisers for more
detailed information and for information regarding any state, local, or foreign
taxes applicable to the variable contracts and the holders thereof.      


                            PORTFOLIO TRANSACTIONS
 
Portfolio transactions of the Funds are placed with those securities brokers and
dealers that WAM believes will provide the best value in transaction and
research services for each Fund, either in a particular transaction or over a
period of time. Although some transactions involve only brokerage services, many
involve research services as well.

In valuing brokerage services, WAM makes a judgment as to which brokers are
capable of providing the most favorable net price (not necessarily the lowest
commission) and the best execution in a particular transaction. Best execution
connotes not only general competence and reliability of a broker, but specific
expertise and effort of a broker in overcoming the anticipated difficulties in
fulfilling the requirements of particular transactions, because the problems of
execution and the required skills and effort vary greatly among transactions.

In valuing research services, WAM makes a judgment of the usefulness of research
and other information provided to WAM by a broker in managing each Fund's
investment portfolio. In some cases, the information, e.g., data or
recommendations concerning particular securities, relates to the specific
transaction placed with the broker, but for the greater part the research
consists of a wide

                                      27
<PAGE>
 
variety of information concerning companies, industries, investment strategy,
and economic, financial, and political conditions and prospects, useful to WAM
in advising that Fund.

The reasonableness of brokerage commissions paid by the Funds in relation to
transaction and research services received is evaluated by WAM's staff on an
ongoing basis. The general level of brokerage charges and other aspects of each
Fund's portfolio transactions are reviewed periodically by the Board of
Trustees.

WAM is the principal source of information and advice to the Funds, and is
responsible for making and initiating the execution of investment decisions by
the Funds. However, the Board of Trustees recognizes that it is important for
WAM, in performing its responsibilities to the Funds, to continue to receive and
evaluate the broad spectrum of economic and financial information that many
securities brokers have customarily furnished in connection with brokerage
transactions, and that in compensating brokers for their services, it is in the
interest of the Funds to take into account the value of the information received
for use in advising the Funds. The extent, if any, to which the obtaining of
such information may reduce WAM's expenses in providing management services to
the Funds is not determinable. In addition, the Board of Trustees understands
that other clients of WAM might benefit from the information obtained for the
Funds, in the same manner that the Funds might benefit from information obtained
by WAM in performing services to others.

Transactions of the Funds in the over-the-counter market and the third market
are executed with primary market makers acting as principal except where it is
believed that better prices and execution may be obtained otherwise.
    
Brokerage commissions incurred by U.S. Small Cap for the fiscal period from May
3, 1995 to December 31, 1995 were $59,273; for the fiscal year ended December
31, 1996 the brokerage commissions were $243,598. Brokerage commissions incurred
by International Small Cap during the same time periods were $49,559 and
$422,414, respectively.      

Although investment decisions for the Funds are made independently from those
for other investment advisory clients of WAM, it may develop that the same
investment decision is made for one or both of the Funds and one or more other
advisory clients. If one or both of the Funds and other clients purchase or sell
the same class of securities on the same day, the transactions will be allocated
as to amount and price in a manner considered equitable to each.


                                   CUSTODIAN
 
State Street Bank and Trust Company, P.O. Box 8502, Boston, Massachusetts 02266-
8502, is the custodian for the Funds. It is responsible for holding all
securities and cash of the Funds, receiving and paying for securities purchased,
delivering against payment securities sold, receiving and collecting income from
investments, making all payments covering expenses of the Funds, and performing
other administrative duties, all as directed by authorized persons of the Funds.
The custodian does not exercise any supervisory function in such matters as
purchase and sale of portfolio securities, payment of dividends, or payment of
expenses of the Funds. The Funds have

                                      28
<PAGE>
 
authorized the custodian to deposit certain portfolio securities of the Funds in
central depository systems as permitted under federal law. The Funds may invest
in obligations of the custodian and may purchase or sell securities from or to
the custodian. The custodian may employ one or more sub-custodians located in
the United States upon approval by the Board of Trustees of the Trust; and is
authorized to employ sub-custodians for the Funds' assets maintained outside the
United States.


                             INDEPENDENT AUDITORS
 
Ernst & Young LLP, Sears Tower, 233 South Wacker Drive, Chicago, Illinois 60606
audits and reports on the Funds' annual financial statements, reviews certain
regulatory reports and the Funds' federal income tax return, and performs other
professional accounting, auditing, tax, and advisory services when engaged to do
so by the Funds.

                                      29
<PAGE>
 
                                   APPENDIX
                                        
                          Description of Bond Ratings
 
A rating of a rating service represents the service's opinion as to the credit
quality of the security being rated. However, the ratings are general and are
not absolute standards of quality or guarantees as to the creditworthiness of an
issuer.  Consequently, WAM believes that the quality of debt securities in which
the Funds invest should be continuously reviewed. A rating is not a
recommendation to purchase, sell or hold a security, because it does not take
into account market value or suitability for a particular investor.  When a
security has received a rating from more than one service, each rating should be
evaluated independently.  Ratings are based on current information furnished by
the issuer or obtained by the ratings services from other sources which they
consider reliable.  Ratings may be changed, suspended or withdrawn as a result
of changes in or unavailability of such information, or for other reasons.

The following is a description of the characteristics of ratings used by Moody's
Investors Service, Inc. ("Moody's") and Standard & Poor's Corporation ("S&P").

Moody's Ratings

          Aaa--Bonds rated Aaa are judged to be the best quality.  They carry
the smallest degree of investment risk and are generally referred to as "gilt-
edge".  Interest payments are protected by a large or by an exceptionally stable
margin and principal is secure. Although the various protective elements are
likely to change, such changes as can be visualized are most unlikely to impair
the fundamentally strong position of such bonds.

          Aa--Bonds rated Aa are judged to be high quality by all standards.
Together with the Aaa group they comprise what are generally known as high grade
bonds.  They are rated lower than the best bonds because margins of protection
may not be as large as in Aaa bonds or fluctuation of protective elements may be
of greater amplitude or there may be other elements present which make the long
term risk appear somewhat larger than in Aaa bonds.

          A--Bonds rated A possess many favorable investment attributes and are
to be considered as upper medium grade obligations.  Factors giving security to
principal and interest are considered adequate but elements may be present which
suggest a susceptibility to impairment sometime in the future.

          Baa--Bonds rated Baa are considered as medium grade obligations, i.e.,
they are neither highly protected nor poorly secured.  Interest payments and
principal security appear adequate for the present but certain protective
elements may be lacking or may be characteristically unreliable over any great
length of time.  Such bonds lack outstanding investment characteristics and in
fact have speculative characteristics as well.

                                      A-1
<PAGE>
 
          Ba--Bonds rated Ba are judged to have speculative elements; their
future cannot be considered as well assured.  Often the protection of interest
and principal payments may be very moderate and thereby not well safeguarded
during both good and bad times over the future.  Uncertainty of position
characterizes bonds in this class.

          B--Bonds rated B generally lack characteristics of the desirable
investment. Assurance of interest and principal payments or of maintenance of
other terms of the contract over any long period of time may be small.

          Caa--Bonds rated Caa are of poor standing.  Such bonds may be in
default or there may be present elements of danger with respect to principal or
interest.

          Ca--Bonds rated Ca represent obligations which are speculative in a
high degree. Such bonds are often in default or have other marked shortcomings.

S&P Ratings

          AAA--Bonds rated AAA have the highest rating. Capacity to pay
principal and interest is extremely strong.

          AA--Bonds rated AA have a very strong capacity to pay principal and
interest and differ from AAA bonds only in small degree.

          A--Bonds rated A have a strong capacity to pay principal and interest,
although they are somewhat more susceptible to the adverse effects of changes in
circumstances and economic conditions than bonds in higher rated categories.

          BBB--Bonds rated BBB are regarded as having an adequate capacity to
pay principal and interest.  Whereas they normally exhibit protection
parameters, adverse economic conditions or changing circumstances are more
likely to lead to a weakened capacity to pay principal and interest for bonds in
this capacity than for bonds in higher rated categories.

          BB--B--CCC--CC--Bonds rated BB, B, CCC and CC are regarded, on
balance, as predominantly speculative with respect to the issuer's capacity to
pay interest and repay principal in accordance with the terms of the obligation.
BB indicates the lowest degree of speculation among such bonds and CC the
highest degree of speculation.  Although such bonds will likely have some
quality and protective characteristics, these are outweighed by large
uncertainties or major risk exposures to adverse conditions.

                                      A-2
<PAGE>
 
 Wanger Advisors Trust
 1996 Annual Report
 Contents

 1  Squirrel Chatter

 3  Funds at a Glance

 4  Performance Review
    Wanger U.S. Small Cap

 6  Performance Review
    Wanger International
    Small Cap

 8  Statement of Investments
    Wanger U.S. Small Cap

12  Statement of Investments
    Wanger International
    Small Cap

16  Portfolio Diversification
    Wanger International
    Small Cap

17  Statements of Assets
    and Liabilities

18  Statements of Operations

19  Statements of Changes in
    Net Assets

20  Financial Highlights
    Wanger U.S. Small Cap

21  Financial Highlights
    Wanger International
    Small Cap

22  Notes to Financial Statements



Wanger Asset Management, L.P., ("WAM") is one of the leading global small-cap
equity managers in the U.S. with 26 years of small-cap investment experience.
WAM manages over $5.4 billion in equities and is the investment adviser to
Wanger U.S. Small Cap, Wanger International Small Cap, Acorn Fund, Acorn
International and Acorn USA.

WAM uses a unique style of catching trends with small, attractively-priced
niche companies. For more complete information about our funds including the
Acorn Funds, fees and expenses, call WAM Brokerage Services, L.L.C.,
distributor, at 1-800-5WANGER for a prospectus. Read it carefully before you
invest or send money.

                                    Wanger
[LOGO]                                [9]6


<PAGE>
 
                                                                          [LOGO]
 
                   Wanger Advisors Trust  1996 Annual Report
- --------------------------------------------------------------------------------
[LOGO] Squirrel Chatter


Ralph Wanger is the President of Wanger Asset Management, L.P., and the
portfolio manager of Wanger Advisors Trust and Acorn Investment Trust. Mr.
Wanger has been featured in Forbes, Money, The Wall Street Journal, Newsweek and
Barron's. Mr. Wanger was also featured in Bill Griffeth's 1994 book, The Mutual
Fund Masters. In a USA Today national survey, professional money managers were
asked to name their favorite investment professional. Wanger was voted #1.

     A Zebra in Lion Country, by Ralph Wanger, is due out in bookstores in
March. Published by Simon & Schuster, this book is a witty survival guide to
investing. It also features some of Wanger's letters to Acorn Fund shareholders
which investors have enjoyed reading over the years. An excerpt from this new
book follows.

     Every bad idea starts from a good idea. We all know this from our own
experience. We go to a party and have a glass of champagne. Good idea. We feel
better, more relaxed. The party is now more interesting, the toasts more lively,
the girls prettier, the dancing more fun. So we have a second glass of
champagne. Another good idea.

The jokes now have gone from humorous to hilarious, the people you're meeting
are the most interesting and glamorous you've ever known, and the dancing is
wild and you've never been better at it. But after the third glass, and the
fourth... well, what started as a good idea turns into a very bad idea, with
your head already beginning to pound from a headache you know will terminate in
a humdinger of a hangover.

     It happens all the time in the stock market. Technology stocks have been
the rage for a long time, albeit with some periods of "consolidation." The boom
started with a very good idea. American technology leads the world. Personal
computers and the software to run them, and other electronic and communications
devices, have become inexpensive and relatively easy to use, and we all buy
them. Companies like Microsoft, Motorola, Intel are well-run--indeed fabulous--
companies. All this is correct, a great investment idea. The people who were
in early have made a lot of money.

     But as the party lengthens, the stocks get taken over by people who don't
particularly understand what's happening; they are just playing a trend.

                                                                     (continued)

                                       1
<PAGE>
 
                   Wanger Advisors Trust  1996 Annual Report
- --------------------------------------------------------------------------------
[LOGO] Squirrel Chatter (continued)


New companies are invented to meet their demands. The securities industry, you
know, is not a service industry. It is a manufacturing industry. If you want a
stock, Wall Street will make it for you. Any business, any kind you want.
Recently, the Internet being the rage, the investment bankers have worked
overtime creating a stream of IPOs to meet the demand. And people love them, to
judge by their P/Es, some of which have soared into the triple-digit
stratosphere.

     Remember back in the early '80's when the hard disk drive for computers was
invented? It was an important, crucial invention, and investors were eager to
be part of this technology. More than 70 disk drive companies were formed and
their stocks were sold to the public. Each company had to get 20 percent of the
market share to survive. For some reason, they didn't all do it.

Anything can get overdone. In the financial world, things get taken to extremes
all the time, like the tulip scandal of 1637. That started with a good idea. The
tulip was a terrific invention. The flower had not previously been seen in
Europe, and it was a great hit, and new varieties and colors increased its 
popularity. There was nothing wrong with the idea. But after a few years people
started selling tulip bulbs for hundreds of thousands of dollars a piece, if
they were of a rare variety, and a good idea went to speculative madness.

     The tulip was a good idea, disk drives were a good idea, the Internet is a
good idea. They have to be good ideas or they would not become widely popular.
Come up with a concept that's patently silly or harmful and people won't want
it. So, only a good idea can become so popular that it becomes a bad idea.


                     [PHOTO OF RALPH WANGER APPEARS HERE]

                            Ralph Wanger, President


                                       2
<PAGE>
 
                                                                          [LOGO]
                                     Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Funds at a Glance


- --------------------------------------------------------------------------------
Wanger U.S. Small Cap
Results to December 31, 1996
<TABLE>
<CAPTION>
 
 
                          4th Quarter   Last 12 months
<S>                       <C>           <C>
Wanger U.S. Small Cap             7.7%            46.6%
Russell 2000                      5.2%            16.5%
S&P MidCap 400                    6.1%            19.2%
S&P 500                           8.3%            23.0%
Dow-Jones                        10.2%            28.9%
966 Variable Insurance
 Funds Average                                    13.4%
</TABLE>

Net Asset Value per share as of 12/31/96: $16.97

The Russell 2000 is formed by taking 3,000 companies and then eliminating the
largest 1,000 leaving a good small company index. The S&P MidCap 400 is a market
value-weighted index of 400 stocks that are in the next tier down from the S&P
500. The S&P 500 is a broad market-weighted average, still blue chip dominated.
The Dow Jones Industrial Average includes 30 large companies. The Lipper
Variable Funds average includes both funds. All indices are unmanaged and
include reinvested dividends.

- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
Wanger International Small Cap
Results to December 31, 1996

                                        4th Quarter   Last 12 months
<S>                                     <C>           <C>
Wanger Int'l Small Cap                          4.3%            32.0%
EAFE                                            1.6%             6.1%
Lipper International Small Co.                  2.8%            13.3%   
 Funds Average
Lipper International Fund Index                 5.2%            14.4%
966 Variable Insurance    
 Funds Average                                                  13.4%
71 International Variable Insurance   
 Funds Average                                                  14.9%

</TABLE> 
Net Asset Value per share as of 12/31/96: $17.71

EAFE is Morgan Stanley's Europe, Australia and Far East Index, an index of
companies throughout the world in proportion to world market capitalization,
excluding the U.S. and Canada. The Lipper International Small Company Funds
Average is comprised of 12 small company international funds. The Lipper
International Fund Index is an equal-weighted index of the 30 largest
international funds. The Lipper Variable Funds average include both funds; the
International Average includes Wanger Int'l Small Cap. All indices are unmanaged
and include reinvested dividends.

- --------------------------------------------------------------------------------
Wanger U.S. Small Cap Top 5 Industries
As a % of net assets, as of 12/31/96

<TABLE> 
<CAPTION>
 
<S>                                 <C> 
Energy/Minerals                     23.9%
Information                         17.9%
Industrial Goods/Services           14.4%
Finance                             14.0%
Health Care                         13.2%

</TABLE> 
- --------------------------------------------------------------------------------
Wanger International Small Cap Top 5 Countries
As a % of net assets, as of 12/31/96

<TABLE> 
<CAPTION> 

<S>                  <C> 
United Kingdom       16.1%
Japan                14.6%
Sweden                7.6%
Singapore             5.8%
Australia             5.5%

</TABLE> 
- --------------------------------------------------------------------------------
Wanger U.S. Small Cap Top 10 Holdings

<TABLE>
<CAPTION>
<S>                           <C>        <C>                           <C>
CalEnergy                     4.9 %      Respironics                   2.8 %
Power Plants                             Sleep Apnea Products

Tesoro Petroleum              3.8 %      Wackenhut                     2.7%
Oil Refinery/Gas Reserves                Prison Management

NGC                           3.8%       Atwood Oceanics               2.6%
Gas Processing/Marketing                 Offshore Drilling

Lincare Holdings              3.6 %      Coast Savings                 2.4%
Home Health Care Services                California Savings/Loan

Seagull Energy                3.6 %      Kronos                        2.4 %
Oil/Gas Producer                         Time Accounting
                                         Software & Clocks
</TABLE> 
- --------------------------------------------------------------------------------
Wanger International Small Cap Top 10 Holdings

<TABLE>
<CAPTION>

<S>                           <C>             <C>                           <C>
TT Tieto                      3.4%            Oriflame International        2.0%
Computer Services/                            Natural Cosmetics
Consulting--Finland                           United Kingdom

Tyndall                       2.9%            Kempen                        2.0%
Money Management/                             Stock Brokerage/Investment
Insurance--Australia                          Management--Netherlands

Genting International         2.8%            Grupo Radio Centro            1.9%
Cruise Line--Singapore                        Radio Broadcasting/
                                              Networks Mexico
Getinge Industrier            2.3%
Sterilization & Disinfection                  International Container       1.9%
Equipment--Sweden                             Terminal Services
                                              Container Handling Terminals
Medeva                        2.1%            & Port Management--Philippines
Pharmaceuticals
United Kingdom                                Premier Oil                   1.8%
                                              Oil/Gas Producer
                                              United Kingdom

- --------------------------------------------------------------------------------
</TABLE>

The funds' top 10 holdings and portfolio diversification vary with changes in
portfolio investments. See the Statements of Investments for complete lists of
the funds' holdings, including those described under "Performance Review."

                                       3
<PAGE>
 
                             Wanger Advisors Trust    1996 Annual Report

- --------------------------------------------------------------------------------
Wanger U.S. Small Cap Performance Review


Wanger U.S. Small Cap had a career year in 1996. One number says it all: +46.6%.
Your Fund's 46.6% return was the third best of all 966 variable insurance funds
in the U.S. tracked by Lipper Analytical Services, Inc. This ranking is based on
the one year total return ending 12/31/96. In other words, we ranked in the top
0.3% of our class. That's summa summa cum laude material.

At the head of our own class were our oil and gas stocks. We accumulated an
outsized energy position in the first half of the year, buying up bustling
companies like NGC Corp. (natural gas brokerage), Atwood Oceanics (deep-sea
drilling rigs), Seagull Energy and United Meridian (oil & gas explorers) on the
cheap. Ten-gallon hats off to Jason Selch, our resident oilman, for tapping into
those gusher stocks.

Small-cap investing was at a handicap last year. Small-cap indices like the
Russell 2000 (+ 16.5%) lagged behind the S&P 500's 23% return as mutual fund
managers poured their record cash inflows into the most liquid large-cap stocks.

The popularity of index investing and the revival of the Nifty Fifty were both
signs of the market's big-cap fetish. We produced our own nifty returns without
the benefit of bigness. We jumped into energy stocks early in the year when the
stocks were slow to follow the price of oil's lead. And we stayed clear of the
fancy-multiple high-tech stocks that soared in the first quarter, but littered
the new lows list soon after.

Our other big winners were a multi-industrial group. Technology was represented
by ACT Manufacturing, an electronics assembler with a bulging backlog of new
customers. Health care winner was Steris, a sterilization equipment company
recovering from acquisition indigestion. Our growth utility (no oxymoron)
CalEnergy was buoyed by its recent acquisition of a UK electric company. And our
best banker was Texas Regional, the grandest bank in the Rio Grande Valley.

Small-cap investing can be volatile and 1996 will be a hard act to follow. Our
team of analysts will continue to work hard to reward the confidence you've
shown in us.


- --------------------------------------------------------------------------------
Fund Facts

The U.S. stock market was red hot and the large company indexes, like the S&P
500 and the Dow Jones Industrial Average, enjoyed another banner year. Remember,
the S&P 500 is a broad market-weighted, blue-chip dominated index and the Dow
Jones is made up of the 30 largest U.S. companies' returns. Most Wanger U.S.
Small Cap companies are not found in the S&P 500 or the Dow; rather, the Fund
primarily invests in small and mid-size companies in the U.S.


                                       4
<PAGE>
 
                                                                      [LOGO]
[LOGO]                         Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------

Wanger U.S. Small Cap                    Results to December 31, 1996

The Value of a $10,000 Investment in     Total Return for Each Period 
Wanger U.S. Small Cap                    May 3, 1995 through December 31, 1996 


Wanger U.S. Small Cap
$17,004

Russell 2000
$13,756

[GRAPH APPEARS HERE] 

- -------------------------------------------------------------------------------
This graph compares the results of $10,000 invested in Wanger U.S. Small Cap on
May 3, 1995 (the date the Fund began operations) with the Russell 2000 with
dividends reinvested. Past performances does not guarantee future results. The
investment return and principal value of an investment in the Fund will
fluctuate so that Fund shares, when redeemed, may be worth more or less than
their original cost.

                                      Average Annual Total Return
                                      1 year: 46.6%   Life: 37.4%

                                       5
<PAGE>
 
                                   Wanger Advisors Trust    1996 Annual Report
                                   Performance Review
- --------------------------------------------------------------------------------
Wanger International Small Cap     


Wanger International Small Cap had a spectacular year in 1996. Our total return
for the year was 32%. Lipper Analytical Services, Inc. tracks 966 variable
insurance mutual funds; our total return for 1996 ranked us #16, in the top 2%.
We are one of 71 international variable insurance mutual funds; we were #2 in
the international arena. Our return was more than double that of the average of
our competitors.

How did we do it? Market conditions were mixed with the most commonly used
international stock index, EAFE, up only 6% for the year. That we were able to
produce a return over five times as large was in part achieved by underweighting
Japanese stocks (the Jasdaq index of smaller Japanese companies was down almost
14% in 1996, on top of which the Japanese Yen declined about 11%) and
overweighting European stocks (a number of European stock markets were up over
20% and most of their currencies declined less than the Yen).

A second important factor which helped us to outperform was our exposure to
energy and technology stocks. The former sector took off along with the price of
oil, and the latter benefited from the current profit growth wave in the
industry, along with newfound interest by U.S. institutions tired of paying sky
high prices for domestic technology stocks.

Finally, our bottom up, research driven approach to stock picking paid off with
our analysts by and large outperforming their respective countries and sectors
in 1996.

For example, our aforementioned energy portfolio benefited from the skill and
enthusiasm brought to bear by our intrepid Jason Selch, whose stocks in the fund
rose an incredible 176% in 1996.

How much risk did we take? Recall that in the investing world, risk is usually
measured by the degree to which prices bounce up and down. We all know that by
this measure cash is the best behaved (least volatile) asset, followed by short-
term bonds, then long-term bonds, blue chip stocks, and finally smaller company
stocks. Where does your Fund fit in in 1996? This might surprise you, but our
weekly volatility during 1996 was somewhere between long-term bonds and blue
chip stocks, even though the Fund invests in smaller company stocks and even
though individual foreign markets can be quite volatile (1).

Your Fund enjoyed lower volatility in 1996 than the blue chips because of its
high level of diversification across countries (over 25) and industries (more
than 20). To illustrate, our top five performers in 1996 included the Finnish
computer consultant TT Tieto, Canadian oil service company Shaw, Dutch mutual
fund manager Kempen, Argentine steel producer Siderca, and Australian life
insurer Tyndall.

We like these stocks because they have high management ownership, low or no
research coverage by brokerage analysts, and above average returns on equity.
Our globe trotting team of security analysts is already at work trying to
uncover more niche companies to add to your portfolio in 1997!!

- --------------------------------------------------------------------------------

(1)  We calculated the weekly volatility (technically the standard deviation of
the weekly returns) in 1996 for each of these asset classes and observed the
following:

Cash                                                         0%
Bonds (Lipper U.S. Government Bond Index)                  0.8%
Wanger International Small Cap                             1.1%
Blue chip stocks (S&P 500 Index)                           1.7%
Small company stocks (NASDAQ Composite Index)              2.0%

Volatility or variability in expected return is one measure of risk. Higher
numbers indicate greater volatility. The information shown represents relative
volatility over past periods and does not necessarily indicate relative future
volatility.

                                       6
<PAGE>
 
                                                                 [LOGO]
                                   Wanger Advisors Trust    1996 Annual Report
- ------------------------------------------------------------------------------
Wanger International Small Cap     Results to December 31, 1996  


- ------------------------------------------------------------------------------
[WANGER INTERNATIONAL SMALL CAP GRAPH APPEARS HERE]

The value of a $10,000 Investment in 
Wanger International Small Cap
Wanger International Small Cap
$17,755

EAFE
$11,293

- ------------------------------------------------------------------------------
This graph compares the results of $10,000 invested in Wanger International
Small Cap on May 3, 1995 (the date the Fund began operations) with Morgan
Stanley's Europe, Australia and Far East Index (EAFE). Past performances does
not guarantee future results. The investment return and principal value of an
investment in the Fund will fluctuate so that Fund shares, when redeemed, may be
worth more or less than their original cost.




                                   Average Annual Total Return
                                   1 year: 32.0%   Life: 41.0%

                                       7
<PAGE>
 

                                     Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Wanger U.S. Small Cap                Statement of Investments  December 31, 1996


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Number                                                                     Value
of Shares

             Common Stocks and Other Equity-Like
             Securities--90.3%

             Information--17.9%
- --------------------------------------------------------------------------------
<S>          <C>                                                     <C>
             Broadcasting/CATV--1.9%

  100,000    C-Tec(b)                                                $ 2,425,000
             Cable TV/Local Telephone

- --------------------------------------------------------------------------------
             Programming for CATV/TV/Satellites--6.4%

  113,400    Data Transmission (b)                                     2,523,150
             Data Services for Farmers                    
                                                          
   88,000    Tele-Communications,                                         
             Liberty Media Group (b)                                   2,513,500
             Cable TV Programming                                               

   70,000    Gaylord Entertainment                                     1,601,250
             Cable TV Programming                                      

   58,000    International Family Entertainment (b)                      899,000
             Cable TV Programming

   42,000    United Video Satellite (b)                                  735,000
             Cable TV Programming
- --------------------------------------------------------------------------------
             Total                                                     8,271,900

- --------------------------------------------------------------------------------
             Mobile Communications--1.9%                   

  112,500    COMARCO (b)                                               2,053,125
             Wireless Network Testing
             
   40,000    Palmer Wireless (b)                                         420,000
             Cellular Phone Services
- --------------------------------------------------------------------------------
             Total                                                     2,473,125

- --------------------------------------------------------------------------------
</TABLE> 

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Number                                                                     Value
of Shares

             Computer Software/Services--4.2%
<S>          <C>                                                       <C> 
  103,600    CACI International, ClA (b)                               2,175,600
             Computer Software Systems
                    
   46,600    Analysts International                                    1,316,450
             Contract Programming                                               
   
   80,000    Simulation Sciences (b)                                   1,190,000
             Process Control Software

   14,000    Compuware (b)                                               701,750
             Computer Services & Software
- --------------------------------------------------------------------------------
             Total                                                     5,383,800

- --------------------------------------------------------------------------------
             Computer Systems--1.1%

   55,400    ACT Manufacturing (b)                                   $ 1,461,175
             Contract Manufacturing

- --------------------------------------------------------------------------------
             Components/Peripherals--2.4%

   96,000    Kronos (b)                                                3,072,000
             Time Accounting Software & Clocks

- --------------------------------------------------------------------------------
             Information Total                                        23,087,000

             Healthcare--13.2%
- --------------------------------------------------------------------------------
             Biotechnology/Drug Delivery--1.4%

   40,000    Watson Pharmaceuticals (b)                                1,797,500
             Generic Pharmaceuticals

- --------------------------------------------------------------------------------
             Medical Equipment--7.1%

  210,000    Respironics (b)                                           3,648,750
             Sleep Apnea Products

   59,100    Steris (b)                                                2,570,850
             Sterilization Equipment

   76,000    Invacare                                                  2,090,000
             Wheelchairs, Patient Aids & Beds

   70,000    Kinetic Concepts                                            857,500
             Hospital Beds 
- --------------------------------------------------------------------------------
             Total                                                     9,167,100

- --------------------------------------------------------------------------------
             Services--4.7%

  114,000    Lincare Holdings (b)                                      4,674,000
             Home Health Care Services

  100,800    United Payors & Providers (b)                             1,386,000
             Medical Claims Repricing
- --------------------------------------------------------------------------------
             Total                                                     6,060,000

- --------------------------------------------------------------------------------
             Health Care Total                                        17,024,600

</TABLE>

See accompanying notes to financial statements.


                                       8
<PAGE>
 
                                                              [LOGO]
                                     Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Wanger U.S. Small Cap                Statement of Investments  December 31, 1996


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Number                                                                     Value
of Shares

             Consumber Goods/services--6.9%
- --------------------------------------------------------------------------------
<S>                                                                   <C>
             Retail--3.1%            

  322,900    Host Mariott Services (b)                               $ 2,946,463
             Runs Airport Restaurants

   30,000    Borders Group (b)                                         1,076,250
             Bookstores
- --------------------------------------------------------------------------------
             Total                                                     4,022,713

- --------------------------------------------------------------------------------
             Entertainment/Leisure--1.4%
   63,000    Showboat                                                  1,086,750
             Casino/Hotels                                 
                                                          
   42,000    Rio Hotel & Casino (b)                                      614,250
             Casino/Hotel                                                        
                                                                                
   60,000    Monarch Casino & Resort (b)                                 120,000
             Casino/Hotel 
- --------------------------------------------------------------------------------
             Total                                                     1,821,000
             
- --------------------------------------------------------------------------------
             Food--0.4%
   70,000    Shoney's (b)                                                490,000
             Restaurants
                 
- --------------------------------------------------------------------------------
             Manufacturers--2.0%
  163,500    Rawlings (b)                                              1,635,000
             Baseball Equipment     

   28,000    Newell                                                      882,000
             Household Goods
- --------------------------------------------------------------------------------
             Total                                                     2,517,000

- --------------------------------------------------------------------------------
             Consumer Goods/Services Total                             8,850,713
</TABLE> 

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Number                                                                     Value
of Shares

             Finance--14.0%
- --------------------------------------------------------------------------------
             Banks/Savings & Loans--7.4%
<S>          <C>                                                       <C> 
   84,000    Coast Savings (b)                                         3,076,500
             California Savings & Loan
             
   60,000    Texas Regional Bancshares                                 2,040,000
             TexMex Bank              

   56,000    Peoples Bank Bridgeport                                   1,617,000
             Consumer Finance

  106,000    Imperial Thrift & Loan (b)                                1,590,000
             California Thrift

   80,000    Commonwealth Bancorp                                      1,200,000
             Pennsylvania Savings & Loan
- --------------------------------------------------------------------------------
             Total                                                     9,523,500

- --------------------------------------------------------------------------------
             Insurance--1.6%                        
   64,000    Penn Treaty American (b)                                  1,664,000
             Nursing Home Equipment              
                    
   17,000    Leucadia National                                           454,750
             Insurance Holding Company                                          
- --------------------------------------------------------------------------------
             Total                                                     2,118,750

- --------------------------------------------------------------------------------
             Money Management--2.7%       
  125,000    Baker Fentress                                            2,109,375
             Closed-End Investment Company      

   63,000    SEI                                                       1,401,750
             Mutual Fund Distributor
- --------------------------------------------------------------------------------
             Total                                                     3,511,125

- --------------------------------------------------------------------------------
             Credit Cards--1.1%
   31,000    National Data                                             1,348,500
             Credit Card & Medical Claims Processor

- --------------------------------------------------------------------------------
             Other--1.2%                             
   86,500    Jayhawk (b)                                                 973,125
             Used Auto Finance

   28,000    Americredit (b)                                             574,000
             Used Auto Finance
- --------------------------------------------------------------------------------
             Total                                                     1,547,125

- --------------------------------------------------------------------------------
             Finance Total                                            18,049,000

</TABLE>

See accompanying notes to financial statements


                                       9
 
<PAGE>
 

                                     Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Wanger U.S. Small Cap                Statement of Investments  December 31, 1996


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Number                                                                     Value
of Shares
<S>          <C>                                                        <C>      
             Industrial Goods/Services--14.4%
             Machinery--0.4%

 30,500      Farr (b)                                                   $507,062
             Filters

- --------------------------------------------------------------------------------
             Steel--5.5%

135,900      Atchison Casting (b)                                      2,446,200
             Steel Foundries

 91,000      Worthington Industries                                    1,649,375
             Steel Processing                   

 56,000      Gibraltar Steel (b)                                       1,470,000
             Steel Processing                   

105,000      Universal Stainless (b)                                     918,750
             Semi-finished Stainless Steel Producer

 35,300      Steel Dynamics (b)                                          675,113
             Steel Mini-Mill                    
- --------------------------------------------------------------------------------
             Total                                                     7,159,438

- --------------------------------------------------------------------------------
             Industrial Suppliers--3.2%          

 92,000      Applied Industrial Technologies                           2,564,500
             Distribution of Industrial Components

 75,000      Lilly Industries, Cl. A                                   1,368,750
             Industrial Coatings                

 10,500      Aftermarket Technology (b)                                  181,125
             Auto Transmission Remanufacturer   
- --------------------------------------------------------------------------------
             Total                                                     4,114,375

- --------------------------------------------------------------------------------
             Services--5.3%                      

230,600      Wackenhut, Cl. B                                          3,516,650
             Prison Management                  

100,000      World Color Press (b)                                     1,925,000
             Printing                           

 50,000      Hub Group (b)                                             1,337,500
             Freight Forwarder
- --------------------------------------------------------------------------------
             Total                                                     6,779,150

- --------------------------------------------------------------------------------
             Industrial Goods/Services Total                          18,560,025
</TABLE> 

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Number                                                                     Value
of Shares

             Energy/Minerals--23.9%
- --------------------------------------------------------------------------------
             Independent Power--6.1%
<S>          <C>                                                      <C> 
189,000      CalEnergy (b)                                            $6,355,125
             Power Plants               

 19,000      AES Corporation (b)                                         883,500
             Power Plants               

 38,500      Thermo Ecotek (b)                                           587,125
             Biomass Operator           
- --------------------------------------------------------------------------------
             Total                                                     7,825,750

- --------------------------------------------------------------------------------
             Oil/Gas Producers--8.6%     

352,000      Tesoro Petroleum (b)                                      4,928,000
             Oil Refinery/Gas Reserves  

209,000      Seagull Energy (b)                                        4,598,000
             Oil & Gas Producer         

 22,000      United Meridian (b)                                       1,138,500
             Oil & Gas Producer

100,000      Tipperary (b)                                               462,500
             Oil & Gas Producer                 
- --------------------------------------------------------------------------------
             Total                                                    11,127,000

- --------------------------------------------------------------------------------
             Distribution/Marketing/Refining--4.2%

210,000      NGC                                                       4,882,500
             Gas Processing/Marketing     

 23,000      United Cities Natural Gas                                   517,500
             Natural Gas Utility          
- --------------------------------------------------------------------------------
             Total                                                     5,400,000

- --------------------------------------------------------------------------------
             Oil Services--5.0%            

 53,700      Atwood Oceanics (b)                                       3,409,950
             Offshore Drilling            

145,000      GeoScience (b)                                            1,885,000
             Offshore Seismic Equipment   

 53,000      J Ray McDermott (b)                                       1,166,000
             Offshore Construction
- --------------------------------------------------------------------------------
             Total                                                     6,460,950

- --------------------------------------------------------------------------------
             Energy/Minerals Total                                    30,813,700
</TABLE>

See accompanying notes to financial statements.

                                      10
<PAGE>
 

                                                                          [LOGO]
                                     Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Wanger U.S. Small Cap


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Principal Amount                                                           Value
<S>                                                                 <C>      

Total Common Stocks and Other
Equity-Like Securities--90.3%                                       $116,385,038
- --------------------------------------------------------------------------------
(Cost: $96,923,306)
 
Short-Term Obligation--7.5%                                            9,690,000
$9,690,000 State Street Bank Repurchase
  Agreement 4.75% 01/02/97;
  12/31/96 Agreement Collateralized by U.S. Treasury Bonds
- --------------------------------------------------------------------------------
(Cost: $9,690,000)
 
Total Investments--97.8%                                             126,075,038
- --------------------------------------------------------------------------------
(Cost: $106,613,306)
 
Cash and Other Assets Less Liabilities--2.2%                           2,882,873
- --------------------------------------------------------------------------------
 
Total Net Assets--100%                                              $128,957,911
</TABLE> 

- --------------------------------------------------------------------------------
     Notes to Statement of Investments:

(a)  At December 31, 1996, for federal income tax purposes cost of investments
     was $106,613,306 and net unrealized appreciation was $19,461,732,
     consisting of gross unrealized appreciation of $21,927,316 and gross
     unrealized depreciation of $2,465,584.

(b)  Non-income producing security.

See accompanying notes to financial statements.

                                      11
<PAGE>
 
                                  Wanger Advisors Trust    1996 Annual Report

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Wanger International Small Cap    Statement of Investments  December 31, 1996
<S>                <C>                                           <C>

- ---------------------------------------------------------------------------
Number                                                                Value
of Shares
                   Common Stocks and Other Equity-Like
                   Securities-93.3%

                   Europe-42.3%
- ---------------------------------------------------------------------------
                   Germany/Austria-2.0%

   10,000          Rhoen Klinikum Ord.                           $1,044,708

    1,200          Rhoen Klinikum Pfd.                              119,136
                   Hospital Management

    2,500          Cewe Color Holdings                              567,776
                   Photographic Developing/Printing
- ---------------------------------------------------------------------------
                   Total                                          1,731,620
- ---------------------------------------------------------------------------
                   Denmark-0.8%

    5,000          Kompan International (b)                         703,521
                   Playground Equipment
- ---------------------------------------------------------------------------
                   Netherlands-2.0%

   86,000          Kempen (b)                                     1,690,369
                   Stock Brokerage/Investment Management
- ---------------------------------------------------------------------------
                   Finland-3.4%

   34,000          TT Tieto, Cl. B                                2,868,865
                   Computer Services/Consulting
- ---------------------------------------------------------------------------
                   Norway-0.9%

   62,500          P4 Radio Helo Norge (b)                          567,701
                   Commercial Radio Station

   55,000          Sysdeco Group (b)                                220,503
                   Software "Tool" Sets & Systems

- ---------------------------------------------------------------------------
                   Total                                            788,204
- ---------------------------------------------------------------------------
                   Sweden-7.6%

  100,000          Getinge Industrier                             1,969,830
                   Sterilization & Disinfection Equipment

   50,000          Esselte, Series A                              1,135,032
                   Office Supplies & Related Equipment

   60,000          Mandator (b)                                     984,183
                   Computer Services/Consulting

    8,000          Scala International (b)                          726,421
                   Accounting Software

   40,000          Frontec, Series B. (b)                           691,271
                   Computer Services & Software
</TABLE>

- ---------------------------------------------------------------------------

Number
of Shares                                                             Value

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------
                   Sweden-7.6% (cont.)
<S>                <C>                                           <C>
   20,000          Tryckindustri                                 $  600,469
                   Printer

   13,714          Pricer, Cl. B (b)                                337,427
                   Electronic Shelf Labels for Supermarkets
- ---------------------------------------------------------------------------
                   Total                                          6,444,633

- ---------------------------------------------------------------------------
                   France-2.6%
   12,000          Axime Ex Segin (b)                             1,384,935
                   Computer Services/Consulting

    7,250          Fininfo                                          767,004
                   Financial Data Feeds
- ---------------------------------------------------------------------------
                   Total                                          2,151,939
- ---------------------------------------------------------------------------
                   United Kingdom/Ireland-16.1%

  402,361          Medeva                                         1,759,272
                   Drugs for Hyperactive Children

  185,000          Oriflame International                         1,693,759
                   Natural Cosmetics Sold Door-to-Door

2,500,000          Premier Oil (b)                                1,518,779
                   Oil & Gas Producer

  799,700          St James Place                                 1,347,999
                   Life Insurance

   40,000          Euro Money Publications                          960,039
                   Financial Publications & Databases

  117,000          Seton Healthcare Group                           910,010
                   Pharmaceuticals

  170,000          Tunstall                                         781,123
                   Monitoring Equipment

   80,000          Edinburgh Fund Managers                          772,139
                   Investment Management

  223,500          Bluebird Toys                                    751,564
                   "Polly Pocket" Toy Manufacturer

2,000,000          Electronics Boutique (b)                         701,633
                   Videogame/Computer Software Stores

   58,500          Serco Group                                      674,749
                   Facilities Management

   80,000          N. Brown Group                                   614,014
                   Mail Order Clothing in Large Sizes
</TABLE>


See accompanying notes to financial statements.

                                       12

<PAGE>
 

                                                                          [LOGO]
                                     Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Wanger International Small Cap       Statement of Investments  December 31, 1996


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Number                                                                     Value
of Shares
<S>                                                                   <C>      

- --------------------------------------------------------------------------------
             United Kingdom/Ireland-16.1%  (cont.)
   65,000    Dorling Kindersley                                         $457,730
             Reference Books & CD-ROMs                
   35,000    Planning Sciences (b)                                       420,000
             Database & Business Intelligence Software
   13,000    International Cabletel (b)                                  328,250
             Cable TV & Telephone System              
- --------------------------------------------------------------------------------
             Total                                                    13,691,060

- --------------------------------------------------------------------------------
             Portugal-0.6%                            
   45,400    Filmes Lusomundo (b)                                        522,283
             Newspapers, Radio, Video, Film Distribution

- --------------------------------------------------------------------------------
             Switzerland-1.9%
    2,000    Societe Generale d'Affichage                                893,655
             Billboard Advertising                   
    1,400    Phoenix Mecano                                              731,903
             Electrical Components                   
- --------------------------------------------------------------------------------
             Total                                                     1,625,558

- --------------------------------------------------------------------------------
             Hungary-0.2%                            
    5,000    Cofinec (b)                                                 151,250
             Consumer Goods Packaging                

- --------------------------------------------------------------------------------
             Italy/Greece-4.2%                       
  399,000    Banca Fideuram                                              874,362
             Life Insurance & Mutual Funds           
  120,000    Athens Medical Center                                       841,474
             Hospitals (Greece)                      
  300,000    Costa Crociere                                              726,077
             Mediterranean Cruise Line               
   30,000    Intracom (b)                                                674,881
             Telecommunications Equipment (Greece)
   15,000    Cellular Communications International (b)                   435,000
             Mobile Communications
- --------------------------------------------------------------------------------
             Total                                                     3,551,794

- --------------------------------------------------------------------------------
             Europe Total                                             35,921,096
</TABLE> 

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Number                                                                     Value
of Shares
<S>                                                                   <C>      

             Asia-30.7%
- --------------------------------------------------------------------------------
             Hong Kong/China-2.7%
3,500,000    Golden Harvest Entertainment                              1,176,471
             Movie Distribution & Exhibition    
1,300,000    Li and Fung                                               1,151,260
             Sourcing of Consumer Goods         
- --------------------------------------------------------------------------------
             Total                                                     2,327,731

- --------------------------------------------------------------------------------
             Japan-14.6%                        
   30,000    Hokuto                                                    1,315,585
             Mushroom Grower                    
   51,600    Central Uni                                               1,178,082
             Health Care/Medical Equipment      
   30,000    Konami                                                    1,020,936
             Entertainment Software/Hardware    
   20,300    HIS                                                         979,409
             Travel Agent                       
   15,000    Tiemco (b)                                                  958,904
             Fishing Equipment                  
   40,000    Arrk                                                        923,581
             Industrial Modeling                
   30,000    People                                                      904,627
             Sports Clubs                       
   25,000    Nihon Jumbo                                                 870,165
             Photo Processing Lab               
   27,000    NuSkin Asia Pacific (b)                                     833,625
             Personal Care Products             
   10,000    Ryohin Keikaku                                              740,932
             Specialty Consumer Goods Retailer  
   11,400    Paramount Bed                                               726,803
             Hospital Bed Manufacturer          
   30,000    Shinki                                                      692,685
             Corporate & Consumer Lending       
   10,500    Noritsu Koki                                                493,021
             Photo Processing Lab Manufacturer  
   32,000    Belluna                                                     479,711
             Catalog Sales                      
   10,000    Mars Engineering                                            254,157
      150    Mars Engineering Warrants 1/25/00                            18,750
             Gaming Systems & Machinery         
- --------------------------------------------------------------------------------
             Total                                                    12,390,973
</TABLE>

See accompanying notes to financial statements.

                                      13
<PAGE>
 

                                     Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Wanger International Small Cap       Statement of Investments  December 31, 1996


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Number                                                                     Value
of Shares
<S>                                                                   <C>      

- --------------------------------------------------------------------------------
             Malaysia-1.7%
  300,000    Malaysian Assurance Alliance                             $1,461,097
             Insurance

- --------------------------------------------------------------------------------
             Indonesia/Philippines-2.6%
3,000,000    Int'l Container Terminal Services (b)                     1,568,441
             Container Handling Terminals                 
             & Port Management (Philippines)              
  600,000    PILTEL (b)                                                  507,605
             Mobile Communications (Philippines)          
  214,800    Suba Indah                                                  131,835
             Beverage and Food                            
- --------------------------------------------------------------------------------
             Total                                                     2,207,881

- --------------------------------------------------------------------------------
             India-0.5%                                   
   30,000    IS Himalaya Fund (b)                                        387,000
             Closed-End Fund                              

- --------------------------------------------------------------------------------
             Korea-1.8%                                   
   35,000    Dongbu Fire & Marine Insurance (b)                        1,168,267
             Non-Life Insurance                           
    1,500    S-1 Corporation New (b)                                     246,600
      500    S-1 Corporation                                              91,662
             Alarm Monitoring                             
- --------------------------------------------------------------------------------
             Total                                                     1,506,529

- --------------------------------------------------------------------------------
             Singapore-5.8%
1,000,000    Genting International                                     2,400,000
             Cruise Line                                  
  599,956    Venture Manufacturing                                     1,492,599
  411,134    Venture Manufacturing Warrants 7/26/99 (b)                  661,318
             Contract Electronics Manufacturer            
  200,000    Datacraft Asia                                              334,000
             Computer Consulting                          
- --------------------------------------------------------------------------------
             Total                                                     4,887,917

- --------------------------------------------------------------------------------
             Thailand-1.0%
  769,000    Shinawatra Satellite                                        869,774
             Satellite Leasing

- --------------------------------------------------------------------------------
             Asia Total                                               26,038,902
</TABLE> 

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------
Number                                                                     Value
of Shares
<S>                                                                   <C>      

             Latin America-9.2%
- --------------------------------------------------------------------------------
             Mexico-3.4%
  235,000    Grupo Radio Centro (b)                                    1,615,625
             Radio Broadcasting/Networks           
  417,000    Nadro, Series L                                           1,244,855
             Pharmaceutical Distribution           
- --------------------------------------------------------------------------------
             Total                                                     2,860,480

- --------------------------------------------------------------------------------
             Argentina-3.8%                        
  700,000    Siderca                                                   1,277,755
             Seamless Pipe for Oil Wells           
  120,000    Patagonia                                                 1,128,226
             Supermarkets                          
  412,000    Cresud (b)                                                  729,386
             Agriculture
   28,000    Siderar (b)                                                  80,656
             Flat Rolled Steel
- --------------------------------------------------------------------------------
             Total                                                     3,216,023

- --------------------------------------------------------------------------------
             Other Latin America-2.0%
   15,000    Genesis Chile Fund                                          551,250
             Closed-End Fund (Chile)                
   50,000    Elevadores Atlas                                            490,809
             Elevator Services (Brazil)             
    8,000    Ceteco Holdings                                             460,169
             Appliances Retailer (Central America)  
  550,000    Brazilian Smaller Companies Warrants                        261,250
             Closed-End Fund                        
- --------------------------------------------------------------------------------
             Total                                                     1,763,478

- --------------------------------------------------------------------------------
             Latin America Total                                       7,839,981
</TABLE>

See accompanying notes to financial statements.

                                      14
<PAGE>
 
                                                                          [LOGO]
                               Wanger Advisors Trust          1996 Annual Report
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
Wanger International Small Cap       Statement of Investments December 31, 1996

- --------------------------------------------------------------------------------
Number                                                                     Value
of Shares

                       Other Countries--11.1%
- --------------------------------------------------------------------------------
<S>                    <C>                                           <C>
                       Australia--5.5%

1,417,976              Tyndall                                       $ 2,421,542
                       Money Management & Insurance

  800,000              Austereo                                        1,270,880
                       Radio Broadcasting

  500,000              Australian Hospital Care (b)                      992,875
                       Hospital Management
- --------------------------------------------------------------------------------
                       Total                                           4,685,297

- --------------------------------------------------------------------------------
                       Israel--1.2%

   70,100              Blue Square Israel (b)                            998,925
                       Supermarkets & Department Stores

- --------------------------------------------------------------------------------
                       Canada--4.4%

   70,000              Shaw Industries                                 1,414,606
                       Oil Field Services

  140,000              Ranger Oil                                      1,382,500
                       Oil & Gas Producer

  250,000              Pan East Petroleum (b)                            893,704
                       Oil & Gas Producer
- --------------------------------------------------------------------------------
                       Total                                           3,690,810

- --------------------------------------------------------------------------------
                       Other Countries Total                           9,375,032
</TABLE>

- --------------------------------------------------------------------------------
Principal Amount                                                           Value

<TABLE>
<CAPTION>
<S>                                                                  <C> 
Total Common Stocks and Other
Equity-Like Securities--93.3%                                        $79,175,011
- --------------------------------------------------------------------------------
(Cost: $71,170,835)


Short-Term Obligation--6.1%                                            5,185,000
$5,185,000 State Street Bank Repurchase
   Agreement 4.75% 01/02/97;
   12/31/96 Agreement Collateralized by U.S. Treasury Bonds
- --------------------------------------------------------------------------------
(Cost: $5,185,000)


Total Investments--99.4%                                              84,360,011
- --------------------------------------------------------------------------------
(Cost: $76,355,835)


Cash and Other Assets Less Liabilities--0.6%                             495,071
- --------------------------------------------------------------------------------

Total Net Assets--100%                                               $84,855,082
- --------------------------------------------------------------------------------
</TABLE>
- --------------------------------------------------------------------------------
     Notes to Statement of Investments:

(a)  At December 31, 1996, for federal income tax purposes cost of investments
     was $76,543,791 and net unrealized appreciation was $7,816,220 consisting
     of gross unrealized appreciation of $13,081,776 and gross unrealized
     depreciation of $5,265,556.

(b)  Non-income producing security.

See accompanying notes to financial statements.

                                       15
<PAGE>
 

                               Wanger Advisors Trust          1996 Annual Report
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
Wanger International Small Cap       Portfolio Diversification December 31, 1996

- --------------------------------------------------------------------------------
Percent                                                                    Value
<S>                                                                  <C> 
       At December 31, 1996, the
       Fund's portfolio
       of investments as a
       percentage of net assets
       was diversified as follows
- --------------------------------------------------------------------------------
       Information

10.3%  Software/Services                                             $ 8,734,816
 4.4   Broadcasting/CATV                                               3,782,456
 2.1   Mobile Communications                                           1,812,379
 1.7   Distribution                                                    1,417,769
 0.9   Consumer Electronics                                              731,903
 0.8   Equipment                                                         674,881
- --------------------------------------------------------------------------------
20.2   Total                                                          17,154,204
 
- --------------------------------------------------------------------------------
       Health Care

 5.3   Biotechnology/Drug Delivery                                     4,436,420
 3.7   Equipment                                                       3,147,912
 3.2   Services                                                        2,746,250
 2.0   Hospital/Laboratory Supplies                                    1,719,678
- --------------------------------------------------------------------------------
14.2   Total                                                          12,050,260
 
- --------------------------------------------------------------------------------
       Consumer Goods/Services

11.7   Retail                                                          9,974,101
 7.9   Entertainment/Leisure                                           6,738,105
 6.2   Manufacturers                                                   5,229,551
 2.6   Food                                                            2,176,806
- --------------------------------------------------------------------------------
28.4   Total                                                          24,118,563
</TABLE>



- --------------------------------------------------------------------------------
Percent                                                                    Value
<TABLE> 
<CAPTION> 
- --------------------------------------------------------------------------------
       Finance
<S>                                                                  <C>
 9.8%  Money Management                                              $ 8,305,911
 3.2   Other                                                           2,752,369
 3.1   Insurance                                                       2,629,364
- --------------------------------------------------------------------------------
16.1   Total                                                          13,687,644
 
- --------------------------------------------------------------------------------
       Industrial Goods/Services

 8.3   Services                                                        7,010,946
 0.1   Steel                                                              80,656
- --------------------------------------------------------------------------------
 8.4   Total                                                           7,091,602
 
- --------------------------------------------------------------------------------
       Energy/Minerals

 4.5   Oil/Gas Producers                                               3,794,983
 1.5   Oil Services                                                    1,277,755
- --------------------------------------------------------------------------------
 6.0   Total                                                           5,072,738
 
- --------------------------------------------------------------------------------
93.3   Total Common Stocks and                                        79,175,011
       Other Equity-Like Securities
 
- --------------------------------------------------------------------------------
 6.1   Short-Term Obligations                                          5,185,000
 
- --------------------------------------------------------------------------------
 0.6   Cash and Other Assets less Liabilities                            495,071
 
- --------------------------------------------------------------------------------
100.0  Net Assets                                                    $84,855,082
</TABLE>

See accompanying notes to financial statements.


                                       16
<PAGE>
 
                                                                          [LOGO]
                                 Wanger Advisors Trust        1996 Annual Report
- --------------------------------------------------------------------------------
Statements of Assets and Liabilities   December 31, 1996
<TABLE>
<CAPTION>
                                                   Wanger U.S.            Wanger
                                                     Small Cap     International
                                                                       Small Cap
- --------------------------------------------------------------------------------
<S>                                                <C>          <C>
Assets

Investments, at value (cost: Wanger U.S. Small
  Cap $106,613,306; Wanger International Small
  Cap $76,355,835)                                 $126,075,038      $84,360,011
Cash                                                      5,875          360,529
Organization costs                                       66,641           66,641
Receivable for:
  Securities sold                                     1,454,509          102,948
  Fund shares sold                                    2,802,009          674,765
  Dividends and interest                                 35,315           60,965
- --------------------------------------------------------------------------------
  Total assets                                      130,439,387       85,625,859

- --------------------------------------------------------------------------------
Liabilities and Net Assets
Payable for:
 Securities purchased                                 1,373,760          651,443
 Amount owed to advisor                                  66,812           66,693
 Other                                                   40,904           52,641
- --------------------------------------------------------------------------------
 Total liabilities                                    1,481,476          770,777
- --------------------------------------------------------------------------------
Net assets applicable to Fund shares outstanding   $128,957,911      $84,855,082
- --------------------------------------------------------------------------------
Fund shares outstanding                               7,598,121        4,791,121
- --------------------------------------------------------------------------------
Pricing of Shares
Net asset value, offering price and redemption
  price per share                                        $16.97           $17.71
- --------------------------------------------------------------------------------
Analysis of Net Assets
Paid-in capital                                    $105,966,024      $74,585,481
Undistributed net realized gain on sales of
  investments and foreign currency transactions       3,530,155        2,453,188
Unrealized appreciation of investments and
  foreign currency transactions                      19,461,732        7,816,413
 (net of unrealized PFIC gains of $187,956
  for Wanger International Small Cap)
Net investment loss                                          --               --
- --------------------------------------------------------------------------------
Net assets applicable to Fund shares outstanding   $128,957,911      $84,855,082
- --------------------------------------------------------------------------------
</TABLE>

See accompanying notes to financial statements.

                                       17
<PAGE>
 
<TABLE>
<CAPTION>

                                                                               Wanger Advisors Trust     1996 Annual Report
- ----------------------------------------------------------------------------------------------------------------------------------- 
Statements of Operations                                                       For the Year Ended December 31, 1996
 
                                                                                             Wanger U.S.       Wanger International
                                                                                              Small Cap             Small Cap
- -----------------------------------------------------------------------------------------------------------------------------------
Investment Income:
<S>                                                                                           <C>              <C> 
Dividends (net of foreign taxes of $51,646 for Wanger International Small Cap)                $   338,661            $  474,929
Interest                                                                                          217,556               106,849
- -----------------------------------------------------------------------------------------------------------------------------------
Total investment income                                                                           556,217               581,778
- -----------------------------------------------------------------------------------------------------------------------------------
Expenses:
Investment advisory                                                                               704,115               631,977
Legal and audit fees                                                                               56,103                56,023
Amortization of organization costs                                                                 20,031                20,031
Transfer agent                                                                                     18,440                18,174
Reports to shareholders                                                                            16,857                17,483
Trustees'                                                                                          15,524                15,400
Insurance                                                                                           7,017                 7,037
Custodian                                                                                          17,508               102,609
Other                                                                                               5,055                 6,375
- -----------------------------------------------------------------------------------------------------------------------------------
     Total expenses                                                                               860,650               875,109
     Less custodian fees paid indirectly                                                          (17,508)              (20,862)
- -----------------------------------------------------------------------------------------------------------------------------------
     Net expenses                                                                                 843,142               854,247
- -----------------------------------------------------------------------------------------------------------------------------------
Net investment loss                                                                              (286,925)             (272,469)
Net realized and unrealized gain on investments:
     Net realized gain on sales of investments                                                  3,926,442             2,570,609
     Net change in unrealized appreciation                                                     19,022,289             6,894,415
- -----------------------------------------------------------------------------------------------------------------------------------
Net realized and unrealized gain on investments                                                22,948,731             9,465,024
- -----------------------------------------------------------------------------------------------------------------------------------
Net increase in net assets resulting from operations                                          $22,661,806            $9,192,555
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

See accompanying notes to financial statements.

                                      18
<PAGE>
 

                                                                          [LOGO]
                                     Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Statements of Changes in Net Assets


<TABLE>
<CAPTION>
                                                 ---------------------------------------    ---------------------------------------
                                                 Wanger U.S. Small Cap                      Wanger International Small Cap 
                                                                                         
                                                        Year ended   May 3, 1995 through           Year ended   May 3, 1995 through
                                                 December 31, 1996     December 31, 1995    December 31, 1996     December 31, 1995
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                              <C>                 <C>                    <C>                 <C>
From operations:                                                                                              
Net investment loss                                      $(286,925)            $(102,659)           $(272,469)             $(27,334)
Net realized gain on sales of investments                3,926,442                59,816            2,570,609                53,290
Net change in unrealized appreciation                   19,022,289               439,443            6,894,415             1,109,954
- -----------------------------------------------------------------------------------------------------------------------------------
  Net increase in net assets resulting                                                                        
  from operations                                       22,661,806               396,600            9,192,555             1,135,910
                                                                                                              
Distributions to shareholders from:                                                                           
Net investment income                                            -                     -               (6,530)                    -
Net realized gain                                          (66,519)                    -              (52,334)                    -
- -----------------------------------------------------------------------------------------------------------------------------------
  Total distribution to shareholders                       (66,519)                    -              (58,864)                    -
                                                                                                              
From Fund share transactions:                                                                                 
Reinvestment of dividends and capital gain                                                                    
  distributions                                             66,519                     -               58,864                     - 
Proceeds from shares sold                               91,019,446            24,819,962           67,872,674            11,951,601
- -----------------------------------------------------------------------------------------------------------------------------------
                                                        91,085,965            24,819,962           67,931,538            11,951,601
Payments for shares redeemed                            (6,626,877)           (3,438,708)          (3,579,071)           (1,844,269)
- -----------------------------------------------------------------------------------------------------------------------------------
Net increase in net assets from Fund share                                                                    
  transactions                                          84,459,088            21,381,254           64,352,467            10,107,332
- -----------------------------------------------------------------------------------------------------------------------------------
Total increase in net assets                           107,054,375            21,777,854           73,486,158            11,243,242
                                                                                                              
- -----------------------------------------------------------------------------------------------------------------------------------
Net Assets:                                                                                                   
Beginning of Period                                     21,903,536               125,682           11,368,924               125,682
- -----------------------------------------------------------------------------------------------------------------------------------
End of Period (a)                                     $128,957,911           $21,903,536          $84,855,082           $11,368,924
===================================================================================================================================
</TABLE>

(a)  Includes accumulated net investment loss of $102,659 for Wanger U.S. Small
     Cap and $27,401 for Wanger International Small Cap in 1995.

See accompanying notes to financial statements.

                                      19
<PAGE>
 
                                     Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Wanger U.S. Small Cap                Financial Highlights
 
<TABLE>
<CAPTION> 
                                                            Year ended          May 3, 1995 through
                                                         December 31, 1996        December 31, 1995
- ---------------------------------------------------------------------------------------------------
<S>                                                      <C>                    <C> 
Net Asset Value, beginning of period                          $      11.60              $     10.00
 
Income From Investment Operations
 Net investment loss (c)                                              (.06)                    (.05)
 Net realized and unrealized gain on investments                      5.46                     1.65
- ---------------------------------------------------------------------------------------------------
 Total from investment operations                                     5.40                     1.60

Less Distributions
 Dividends from net investment income                                  --                       --   
 Distributions from net realized gain                                (0.03)                     --
- --------------------------------------------------------------------------------------------------
 Total distributions                                                 (0.03)                     --

Net Asset Value, end of period                                $      16.97              $    11.60
- --------------------------------------------------------------------------------------------------
Total Return                                                         46.59%                  16.00%
 
Ratios/Supplemental Data:
Ratio of expenses to average net assets (a)(b)                        1.21%                   2.08% *
Ratio of net investment loss to average net assets (b)                (.41%)                 (1.44%)*
Portfolio turnover rate                                                 46%                     59% *
Net assets at end of period                                   $128,957,911              $21,903,536


The average commissions paid per share on stock transactions for the
year ended December 31, 1996 was $.0581.
- ---------------------------------------------------------------------------------------------------
</TABLE> 
    *Annualized

(a) In accordance with a requirement of the Securities and Exchange Commission,
    this ratio reflects gross custodian fees. This ratio net of custodian fees
    paid indirectly would have been 1.19% for the year ended December 31, 1996
    and 2.00% for the period ended December 31, 1995.

(b) The Fund was reimbursed by the Advisor for certain net expenses from May 3,
    1995 through December 31, 1995. Without the reimbursement, the ratio of
    expenses to average net assets and the ratio of net investment loss to
    average net assets for the period ended December 31, 1995 would have been
    2.35% and (1.71%), respectively.

(c) Net investment loss per share for the year ended December 31, 1996 was
    based upon the average shares outstanding during the year.

See accompanying notes to financial statements.

                                      20
<PAGE>
 
                                                                          [LOGO]

                                     Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Wanger International Small Cap       Financial Highlights
<TABLE>
<CAPTION>
 
                                                                 Year ended                          May 3, 1995 through
                                                              December 31, 1996                        December 31, 1995
- ------------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>                                    <C> 
Net Asset Value, beginning of period                                     $13.45                                   $10.00
 
Income From Investment Operations
    Net investment loss (c)                                                (.09)                                    (.03)
    Net realized and unrealized gain on investments                        4.38                                     3.48
- ------------------------------------------------------------------------------------------------------------------------
    Total from investment operations                                       4.29                                     3.45
 
Less Distributions
    Dividends from net investment income                                     --                                       --
    Distributions from net realized gain                                   (.03)                                      --
- ------------------------------------------------------------------------------------------------------------------------
    Total distributions                                                    (.03)                                      --
 
Net Asset Value, end of period                                           $17.71                                   $13.45
- ------------------------------------------------------------------------------------------------------------------------ 
Total Return                                                              32.01%                                   34.50%
 
Ratios/Supplemental Data
Ratio of expenses to average net assets (a) (b)                            1.79%                                    2.32% *
Ratio of net investment loss to average net assets (b)                    (0.56%)                                  (0.81%)*
Portfolio turnover rate                                                      50%                                      14% *
Net assets at end of period                                          84,855,082                               11,368,924

The average commissions paid per share on stock transactions
for the year ended December 31, 1996 was $.0130.
- ------------------------------------------------------------------------------------------------------------------------
</TABLE> 
    *Annualized

(a) In accordance with a requirement of the Securities and Exchange Commission,
    this ratio reflects gross custodian fees. This ratio net of custodian fees
    paid indirectly would have been 1.75% for the year ended December 31, 1996
    and 2.00% for the period ended December 31, 1995.
 
(b) The Fund was reimbursed by the Advisor for certain expenses from May 3, 1995
    through December 31, 1995. Without the reimbursement, the ratio of expenses
    to average net assets and the ratio of net investment income to average net
    assets for the period ended December 31, 1995 would have been 4.20% and
    (2.69)%, respectively.

(c)  Net investment loss per share for the year ended December 31, 1996 was
     based upon the average shares outstanding during the year.

See accompanying notes to financial statements.

                                      21
<PAGE>
 
                                 Wanger Advisors Trust    1996 Annual Report

- --------------------------------------------------------------------------------
Notes to Financial Statements

1. Nature of operations
Wanger U.S. Small Cap and Wanger International Small Cap ("the Funds") are
series of Wanger Advisors Trust ("the Trust"), an open-end management investment
company organized as a Massachusetts business trust. The investment objective of
each Fund is to seek long-term growth of capital. The Funds are available only
for allocation to certain life insurance company separate accounts established
for the purpose of funding qualified and non-qualified variable annuity
contracts, and may also be offered directly to certain types of pension plans
and retirement arrangements.

2. Significant Accounting Policies
Security valuation
Investments are stated at current value. Securities traded on securities
exchanges or in over-the-counter markets in which transaction prices are
reported are valued at the last sales price at the time of valuation. Securities
for which there are no reported sales on the valuation date are valued at the
mean of the latest bid and ask quotation or, if there is no ask quotation, at
the most recent bid quotation. Money market instruments having a maturity of 60
days or less from the valuation date are valued on an amortized cost basis.
Securities for which quotations are not readily available and any other assets
are valued at a fair value as determined in good faith by the Board of Trustees.

Foreign currency translations
Values of investments denominated in foreign currencies are converted into
U.S. dollars using the spot market rate of exchange at the time of valuation.
Purchases and sales of investments and dividend and interest income are
translated into U.S. dollars using the spot market rate of exchange prevailing
on the respective dates of such transactions. The gain or loss resulting from
changes in foreign exchange rates is included with net realized and unrealized
gain or loss from investments as appropriate.

Security transactions and investment income
Security transactions are accounted for on the trade date (date the order to buy
or sell is executed) and dividend income is recorded on the ex-dividend date,
except that certain dividends from foreign securities are recorded as soon as
the information is available to the Fund. Interest income is recorded on the
accrual basis and includes amortization of discounts on money market instruments
and on long-term debt instruments when required for federal income tax purposes.
Realized gains and losses from security transactions are reported on an
identified cost basis. Net realized gains for Wanger U.S. Small Cap include
distributions of realized gains from other investment companies of $202,920 in
1996.

Fund share valuation
Fund shares are sold and redeemed on a continuing basis at net asset value. Net
asset value per share is determined daily as of the close of trading on the New
York Stock Exchange on each day the Exchange is open for trading by dividing the
total value of the Fund's investments and other assets, less liabilities, by the
number of Fund shares outstanding.

Custodian fees
Custodian fees are reduced based on each Fund's cash balances maintained with
the custodian. This presentation does not affect the determination of net
investment income.

Federal income taxes, dividends and distributions to shareholders
The Funds have complied with the special provisions of the Internal Revenue Code
available to regulated investment companies and, in the manner provided therein,
distribute all of their taxable income, as well as any net realized gain on
sales of investments and foreign currency transactions reportable for federal
income tax purposes.

     Wanger International Small Cap has elected to mark-to-market its investment
in Passive Foreign Investment Companies ("PFICS") for income tax purposes. In
accordance with this election, the Fund recognized cumulative net unrealized
appreciation on PFICS of $210,309 for the year ended December 31, 1996. The
amount for 1996 is treated as ordinary income for federal income tax purposes,
and as such, is used to offset the net investment loss incurred by the Fund.
Cumulative net unrealized appreciation recognized in prior years on PFICs sold
in 1996 amounted to $22,353.

     Dividends and distributions payable to its shareholders are recorded by the
Fund on the ex-dividend date.

     Reclassifications have been made in 1996 for Wanger U.S. Small Cap and
Wanger International Small Cap in the accompanying analysis of net assets from
accumulated net investment loss to undistributed net realized gains on sales of
investments of $389,584 and $96,091, respectively, to reflect differences
between financial reporting and income tax bases.

                                      22
<PAGE>
 

                                                                          [LOGO]
                                     Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Notes to Financial Statements


3. Transactions with Affiliates

The Fund's investment advisor, Wanger Asset Management, L.P. ("WAM"), furnishes
continuing investment supervision to the Funds and is responsible for overall
management of the Funds' business affairs. Each Fund pays WAM a monthly advisory
fee based upon average daily net assets at the following rates:

<TABLE>
<CAPTION>
                                             Wanger U.S.    Wanger International
                                               Small Cap               Small Cap
- --------------------------------------------------------------------------------
<S>                                          <C>            <C>
Average Daily Net Assets:    
  For the first $100 million                       1.00%                   1.30%
  Next $150 million                                 .95%                   1.20%
  In excess of $250 million                         .90%                   1.10%
- --------------------------------------------------------------------------------
</TABLE>

     The investment advisory agreements also provide that WAM will reimburse the
Funds to the extent that ordinary operating expenses (computed based on net
custodian fees) exceed 1.50% (2.00% in 1995) for Wanger U.S. Small Cap and 1.90%
(2.00% in 1995) for Wanger International Small Cap, of average net assets. WAM
was not required to reimburse the Funds under these agreements for the year
ended December 31, 1996.

     Certain officers and trustees of the Trust are also principals of WAM. The
Trust makes no direct payments to its officers and trustees who are affiliated
with WAM. Wanger U.S. Small Cap and Wanger International Small Cap incurred
trustees' fees and expenses of $15,524 and $15,400 respectively, for the year
ended December 31, 1996 to trustees not affiliated with WAM.

     WAM advanced $100,000 to each Fund in connection with their organization
and initial registration. These costs are being amortized and reimbursed to WAM
over the period May, 1995 through April, 2000.

     WAM Brokerage Services, L.L.C., a wholly-owned subsidiary of WAM, is the
distributor of each Fund's shares and receives no compensation for its services.

- --------------------------------------------------------------------------------
4. Fund Share Transactions

Proceeds and payments on Fund shares as shown in the statements of changes in
net assets are in respect of the following numbers of shares:

<TABLE>
<CAPTION>
                                                 ---------------------------------------    ---------------------------------------
                                                 Wanger U.S. Small Cap                      Wanger International Small Cap 
                                                                                         
                                                        Year ended          Period ended           Year ended          Period ended
                                                 December 31, 1996     December 31, 1995    December 31, 1996     December 31, 1995
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                              <C>                 <C>                    <C>                 <C>
Shares sold                                              6,137,385             2,170,461            4,154,432               986,106
Shares issued in reinvestment of dividend and                                                                       
capital gain distributions                                   5,157                     -                3,911                     -
- -----------------------------------------------------------------------------------------------------------------------------------
                                                         6,142,542             2,170,461            4,158,343               986,106
Less shares redeemed                                       432,817               294,633              212,404               153,492
- -----------------------------------------------------------------------------------------------------------------------------------
Net increase in shares outstanding                       5,709,725             1,875,828            3,945,939               832,614
===================================================================================================================================
</TABLE>

5. Investment transactions

The aggregate cost of purchases and proceeds from sales other than short-term
obligations for the year ended December 31, 1996 were:

<TABLE> 
<CAPTION>  
                                              Purchases                    Sales
<S>                                        <C>                       <C> 
Wanger U.S. Small Cap                      $103,202,082              $30,342,586
Wanger International Small Cap               82,019,311               23,145,432
</TABLE> 

                                      23
<PAGE>
 
                                Wanger Advisors Trust    1996 Annual Report
- --------------------------------------------------------------------------------
Report of Independent Auditors

To the Shareholders and the Board of Trustees
of Wanger Advisors Trust

We have audited the accompanying statements of assets and liabilities, including
the statements of investments, of the Wanger Advisors Trust, comprising the U.S.
Small Cap and Wanger International Small Cap portfolios, as of December 31,
1996, the related statements of operations for the year then ended and changes
in net assets and the financial highlights for the periods indicated thereon.
These financial statements and financial highlights are the responsibility of
the Funds' management. Our responsibility is to express an opinion on these
financial statements and financial highlights based on our audits.
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements and financial
highlights are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of investments owned as of
December 31, 1996, by correspondence with the custodian and brokers. An audit
also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.
     In our opinion, the financial statements and financial highlights referred
to above present fairly, in all material respects, the financial position of
each of the respective portfolios of the Wanger Advisors Trust as of December
31, 1996, the results of their operations for the year then ended and changes in
net assets and financial highlights for the periods indicated thereon, in
conformity with generally accepted accounting principles.

                                         ERNST & YOUNG LLP

Chicago, Illinois
January 31, 1997

                                      24
<PAGE>
 

<TABLE>
<CAPTION>  
 
Wanger Advisors Trust

<S>                                   <C>  
Trustees                              Transfer Agent,
Fred D. Hasselbring                   Dividend Disbursing Agent
Charles P. McQuaid                    and Custodian
P. Michael Phelps
James A. Star                         State Street Bank
Ralph Wanger                          and Trust Company
                                      Attention:
Officers                              Wanger Advisors Trust
                                      P.O. Box 8502
Ralph Wanger                          Boston, Massachusetts
President                             02266-8502

Charles P. McQuaid                    Distributor
Senior Vice President                 WAM Brokerage
                                      Services, L.L.C.
Terence M. Hogan                      227 West Monroe Street
Vice President                        Suite 3000
                                      Chicago, Illinois 60606
Leah J. Zell                          1-800-5-WANGER
Vice President                        (1-800-592-6437)

Merrillyn J. Kosier                   Investment Advisor
Vice President and                    Wanger Asset
Secretary                             Management, L.P.
                                      227 West Monroe Street
Bruce H. Lauer                        Suite 3000
Vice President and                    Chicago, Illinois 60606
Treasurer                             1-800-5-WANGER
                                      (1-800-592-6437)
Kenneth A. Kalina
Assistant Treasurer                   Legal Counsel
                                      Bell, Boyd & Lloyd
                                      Chicago, Illinois

                                      Independent Auditors
                                      Ernst & Young LLP
                                      Chicago, Illinois

</TABLE> 
This report, including the audited schedules of investments and financial
statements, is submitted for the general information of the shareholders of the
Wanger Advisors Trust. This report is not authorized for distribution unless
preceded or accompanied by a prospectus.

<PAGE>
 
                                     PART C

Item 24.               Financial Statements and Exhibits
 
(a)            Financial statements:

   (1)         Financial statements included in Part A of this
               amendment:

               None

   (2)         Financial statements included in Part B of this
               amendment:

       (i)     Wanger U.S. Small Cap Adviser (incorporated by reference to the
                following portions of Registrant's 1996 Wangers Advisors Trust
                Annual Report; a copy of the annual report is attached to this
                amendment, but, except for those portions incorporated by
                reference, is furnished for the information of the Commission
                and is not deemed to be filed as part of this amendment):

                    Report of Independent Auditors

                    Statement of Assets and Liabilities at December 31, 1996
                    
                    Statement of Operations for the period ended 
                    December 31, 1996

                    Statement of Changes in Net Assets for the period ended
                    December 31, 1996

                    Statement of Investments at December 31, 1996

                    Notes to financial statements


       (ii)    Wanger International Small Cap Adviser (incorporated by reference
                to the following portions of Registrant's 1996 Wangers Advisors
                Trust Annual Report; a copy of the annual report is attached to
                this amendment, but, except for those portions incorporated by
                reference, is furnished for the information of the Commission
                and is not deemed to be filed as part of this amendment):

                    Report of Independent Auditors

                    Statement of Assets and Liabilities at December 31, 1996
                    
                    Statement of Operations for the period ended 
                    December 31, 1996

                    Statement of Changes in Net Assets for the period ended
                    December 31, 1996

                    Statement of Investments at December 31, 1996

                    Notes to financial statements

                                      C-1
<PAGE>
 
   (2)         Financial statements included in Part C of this amendment:

               None

          Note:  The following schedules have been omitted for the following
                 reasons:

            Schedules I and III - The required information is presented in the
            statements of investments at December 31, 1996.

            Schedules II, IV and V - The required information is not present.


(b)    Exhibits:

       1.      Agreement and Declaration of Trust.(2)
    
       2.      By-laws.(2)

       3.      None
      
       4(a).   Specimen Share Certificate - Wanger U.S. Small Cap. (1)

       4(b).   Specimen Share Certificate - Wanger International Small Cap. (1)

       5(a).   Investment Advisory Agreement - Wanger U.S. Small Cap.(2)

       5(b).   Investment Advisory Agreement - Wanger International Small
               Cap.(2)

       6.      Distribution Agreement between Wanger Advisors Trust and WAM
               Brokerage Services, L.L.C. dated May 1, 1996.(2)

       7.      None.

       8.      Custodian Contract between Wanger Advisors Trust and State Street
               Bank and Trust Company.(2)
    
       9(a)(1) Amendment No. 1 to the Participation Agreement between Wanger
               Advisors Trust and Phoenix Home Life Mutual Insurance Company
               dated April 18, 1995 (2) (amendment dated December 16, 1996).(3)

       9(a)(2) Amendment No. 1 to the Participation Agreement between Wanger
               Advisors Trust and PHL Variable Insurance Company dated February
               23, 1995 (2) (amendment dated December 16, 1996).(3)

       9(a)(3) Amendment No. 1 to the Participation Agreement between Wanger
               Advisors Trust and Providian Life and Health Insurance Company
               (formerly National Home Life Assurance Company) dated May 19,
               1995 (2) (amendment dated December 16, 1996).(3)     

                                      C-2
<PAGE>
     
       9(a)(4) Participation Agreement between Wanger Advisors Trust and First
               Providian Life and Health Insurance Company dated November 15,
               1996, and Amendment No. 1 dated December 16, 1996.(3)

       9(a)(5) Participation Agreement between Wanger Advisors Trust and SAFECO
               Life Insurance Company dated September 27, 1995 and Amendment 
               No. 1 dated December 18, 1996.(3)     

       9(b).   Transfer Agency and Service Agreement between Wanger Advisors
               Trust and State Street Bank and Trust Company.(2)

       10.     Legal opinion and consent of Bell, Boyd & Lloyd dated 
               February 15, 1995.(2)

       11.     Consent of Independent Auditors.

       12.     None.

       13.     Subscription Agreement.(2)

       14.     None.

       15.     None.

       16(a).  Computation of performance information - Wanger U.S. Small
               Cap.(2)

       16(b).  Computation of performance information - Wanger International
               Small Cap.(2)

       17(a)   Financial data schedule - Wanger U.S. Small Cap.

       17(b)   Financial data schedule - Wanger International Small Cap.

       18      Form of Purchase Application.(2)

     ______________________________

(1)  Incorporated by reference to the exhibit of the same number filed with 
     post-effective amendment no. 1 to Registrant's registration statement on
     form N-1A, Securities Act registration no. 33-83548 (the "Registration
     Statement") filed on August 25, 1995.

(2)  Incorporated by reference to the exhibit of the same number filed with
     post-effective amendment no. 2 to Registrant's Registration Statement filed
     on April 19, 1996.
    
(3)  Incorporated by reference to the exhibit of the same number filed with 
     post-effective amendment no. 3 to Registrant's Registration Statement
     filed on April 21, 1997.     

Item 25.  Persons Controlled by or Under Common Control with Registrant

               The registrant does not consider that there are any persons
          directly or indirectly controlling, controlled by, or under common
          control with, the Registrant within the meaning of this item. The
          information in the prospectus under the caption "Organization and
          Management" and in the Statement of Additional Information under the
          caption "Investment Adviser" is incorporated by reference.


                                      C-3
<PAGE>
 
Item 26.  Number of Holders of Securities

               As of January 31, 1997, there were 19 record holders of the
          Registrant's shares of beneficial interest of the series designated
          Wanger U.S. Small Cap and 31 record holders of the Registrant's shares
          of beneficial interest of the series designated Wanger International
          Small Cap.

Item 27.  Indemnification

               Article VIII of the Agreement and Declaration of Trust of the
          registrant (Exhibit 1 included herein) provides in effect that the
          Registrant shall provide certain indemnification of its trustees and
          officers. In accordance with Section 17(h) of the Investment Company
          Act of 1940, that provision shall not protect any person against any
          liability to the registrant or its shareholders to which he would
          otherwise be subject by reason of willful misfeasance, bad faith,
          gross negligence or reckless disregard of the duties involved in the
          conduct of his office.

               Insofar as indemnification for liabilities arising under the
          Securities Act of 1933 (the "Securities Act") may be permitted to
          Trustees, officers and controlling persons of the Registrant pursuant
          to the foregoing provisions or otherwise, the Registrant has been
          advised that in the opinion of the Securities and Exchange Commission
          such indemnification is against public policy as expressed in the 1940
          Act and is, therefore, unenforceable. In the event that a claim for
          indemnification against such liabilities (other than the payment by
          the Registrant of expenses incurred or paid by a Trustee, officer, or
          controlling person of the Registrant in connection with the successful
          defense of any action, suit or proceeding) is asserted by such
          Trustee, officer or controlling person in connection with the
          securities being registered, the Registrant will, unless in the
          opinion of its counsel the matter has been settled by controlling
          precedent, submit to a court of appropriate jurisdiction the question
          whether such indemnification by it is against public policy as
          expressed in the 1940 Act and will be governed by the final
          adjudication of such issue.

               The Registrant, its trustees and officers, its investment adviser
          and persons affiliated with them are insured under a policy of
          insurance maintained by registrant and its investment adviser, within
          the limits and subject to the limitations of the policy, against
          certain expenses in connection with the defense of actions, suits or
          proceedings, and certain liabilities that might be imposed as a result
          of such actions, suits or proceedings, to which they are parties by
          reason of being or having been such trustees or officers. The policy
          expressly excludes coverage for any trustee or officer whose personal
          dishonesty, fraudulent breach of trust, lack of good faith, or
          intention to deceive or defraud has been finally adjudicated or may be
          established or who willfully fails to act prudently.

                                      C-4
<PAGE>
 
Item 28.  Business and Other Connections of Investment Adviser

               The information in the prospectus under the caption "Organization
          and Management" is incorporated by reference. Neither Wanger Asset
          Management, L.P. nor its general partner has at any time during the
          past two years been engaged in any other business, profession,
          vocation or employment of a substantial nature either for its own
          account or in the capacity of director, officer, employee, partner or
          trustee.

 
Item 29.  Principal Underwriter

          WAM Brokerage Services, L.L.C. also acts as principal underwriter for
          Acorn Investment Trust.

 
           Name                Positions and Offices      Positions and Offices
                                 with Underwriters           with Registrant

      Terence M. Hogan            President               Vice President and
                                                          Trustee

      Merrillyn J. Kosier     Vice President and          Vice President
                              Secretary

The principal business of each officer of WAM Brokerage Services, L.L.C. is 227
West Monroe Street, Suite 3000, Chicago, Illinois 60606.


Item 30.  Location of Accounts and Records

               Bruce H. Lauer, Vice President and Treasurer
               Wanger Advisors Trust
               227 West Monroe Street, Suite 3000
               Chicago, Illinois 60606

Item 31.  Management Services

               Not applicable.

                                      C-5
<PAGE>
 
Item 32.  Undertakings

     (a)  Not applicable.

     (b)  Not applicable.

     (c)  The Registrant undertakes to furnish each person to whom a Prospectus
          is delivered with a copy of the Registrant's latest annual report to
          shareholders, upon request and without charge.

          The Registrant undertakes, if requested to do so by the holders of at
          least 10% of the Registrant's outstanding shares, to call a meeting of
          shareholders for the purpose of voting upon the question of removal of
          a director or directors and to assist in communications with other
          shareholders as required by Section 16(c).

                                      C-6
<PAGE>
 
                                  SIGNATURES

    
     Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the registrant certifies that it meets all of
the requirements for effectiveness of this registration statement pursuant to
rule 485(b) under the Securities Act of 1933 and has duly caused this amendment
to the registration statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in Chicago, Illinois on April 21, 1997.     


                                    WANGER ADVISORS TRUST


                                    By /s/Ralph Wanger
                                       -----------------------
                                      Ralph Wanger, President

     Pursuant to the requirements of the Securities Act of 1933, this amendment
to the registration statement has been signed below by the following persons in
the capacities and on the dates indicated.

    
<TABLE> 
<CAPTION> 
        Name                    Title                            Date
        ----                    -----                            ----
<S>                       <C>                        <C>     <C>
/s/Fred D. Hasselbring    Trustee                    )
- ------------------------                             )
Fred D. Hasselbring                                  )
                                                     )
/s/Charles P. McQuaid     Trustee                    )
- ------------------------                             )
Charles P. McQuaid                                   )
                                                     )
/s/P. Michael Phelps      Trustee                    )       April 21, 1997
- ------------------------                             )
P. Michael Phelps                                    )
                                                     )
/s/James A. Star          Trustee                    )
- ------------------------                             )
James A. Star                                        )
                                                     )
/s/Ralph Wanger           Trustee and President      )
- ------------------------  (principal executive       )
Ralph Wanger              officer)                   )
                                                     )
/s/Bruce H. Lauer         Treasurer (principal       )
- ------------------------  financial and accounting   )
Bruce H. Lauer            officer)                   )

</TABLE>     
<PAGE>
 
                  Index of Exhibits Filed with this Amendment
                  -------------------------------------------

Exhibit
Number                              Exhibit
- -------                             -------
         
11                 Consent of Independent Auditors


17(a)              Financial data schedule - Wanger U.S. Small
                   Cap

17(b)              Financial data schedule - Wanger International
                   Small Cap


<PAGE>
 
                                                                      Exhibit 11

                        CONSENT OF INDEPENDENT AUDITORS


We consent to the reference to our firm under the caption "Financial Highlights"
and to the incorporation by reference of our report dated January 31, 1997 in
the Registration Statement (Form N-1A) of Wanger Advisors Trust, filed with the
Securities and Exchange Commission in this Post-Effective Amendment No. 4 to the
Registration Statement under the Securities Act of 1933 (File No. 33-83548) and
in this Amendment No. 5 to the Registration Statement under the Investment
Company Act of 1940 (File No. 811-8748).


                                                     /s/ ERNST & YOUNG LLP

Chicago, Illinois

April 25, 1997

<TABLE> <S> <C>

<PAGE>

<ARTICLE> 6
<SERIES>
   <NUMBER> 1
   <NAME> WANGER US SMALL CAP
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                        DEC-31-1996
<PERIOD-END>                             DEC-31-1996
<INVESTMENTS-AT-COST>                         106613
<INVESTMENTS-AT-VALUE>                        126075
<RECEIVABLES>                                   4292
<ASSETS-OTHER>                                    72
<OTHER-ITEMS-ASSETS>                               0
<TOTAL-ASSETS>                                130439
<PAYABLE-FOR-SECURITIES>                        1374
<SENIOR-LONG-TERM-DEBT>                            0
<OTHER-ITEMS-LIABILITIES>                        107
<TOTAL-LIABILITIES>                             1481
<SENIOR-EQUITY>                                    0
<PAID-IN-CAPITAL-COMMON>                      105966
<SHARES-COMMON-STOCK>                           7598
<SHARES-COMMON-PRIOR>                           1888
<ACCUMULATED-NII-CURRENT>                          0
<OVERDISTRIBUTION-NII>                             0
<ACCUMULATED-NET-GAINS>                         3530
<OVERDISTRIBUTION-GAINS>                           0
<ACCUM-APPREC-OR-DEPREC>                       19462
<NET-ASSETS>                                  128958
<DIVIDEND-INCOME>                                339
<INTEREST-INCOME>                                217
<OTHER-INCOME>                                     0
<EXPENSES-NET>                                   843
<NET-INVESTMENT-INCOME>                        (287)
<REALIZED-GAINS-CURRENT>                        3927
<APPREC-INCREASE-CURRENT>                      19022
<NET-CHANGE-FROM-OPS>                          22662
<EQUALIZATION>                                     0
<DISTRIBUTIONS-OF-INCOME>                          0
<DISTRIBUTIONS-OF-GAINS>                          67
<DISTRIBUTIONS-OTHER>                              0
<NUMBER-OF-SHARES-SOLD>                         6137
<NUMBER-OF-SHARES-REDEEMED>                      433
<SHARES-REINVESTED>                                6
<NET-CHANGE-IN-ASSETS>                        107054
<ACCUMULATED-NII-PRIOR>                        (103)
<ACCUMULATED-GAINS-PRIOR>                         60
<OVERDISTRIB-NII-PRIOR>                            0
<OVERDIST-NET-GAINS-PRIOR>                         0
<GROSS-ADVISORY-FEES>                            704
<INTEREST-EXPENSE>                                 0
<GROSS-EXPENSE>                                  861
<AVERAGE-NET-ASSETS>                           71075
<PER-SHARE-NAV-BEGIN>                          11.60
<PER-SHARE-NII>                                (.06)
<PER-SHARE-GAIN-APPREC>                         5.46
<PER-SHARE-DIVIDEND>                               0
<PER-SHARE-DISTRIBUTIONS>                        .03
<RETURNS-OF-CAPITAL>                               0
<PER-SHARE-NAV-END>                            16.97
<EXPENSE-RATIO>                                 1.21
<AVG-DEBT-OUTSTANDING>                             0
<AVG-DEBT-PER-SHARE>                               0
        



</TABLE>

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 6
<SERIES>   
   <NUMBER> 2   
   <NAME> WANGER INTERNATIONAL SMALL CAP    
<MULTIPLIER> 1000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               DEC-31-1996
<INVESTMENTS-AT-COST>                            76356
<INVESTMENTS-AT-VALUE>                           84360
<RECEIVABLES>                                      839
<ASSETS-OTHER>                                     427
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                   85626
<PAYABLE-FOR-SECURITIES>                           651
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                          120
<TOTAL-LIABILITIES>                                771
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                         74585
<SHARES-COMMON-STOCK>                             4791
<SHARES-COMMON-PRIOR>                              845
<ACCUMULATED-NII-CURRENT>                         (96)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                           2549
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                          7816
<NET-ASSETS>                                     84855
<DIVIDEND-INCOME>                                  475
<INTEREST-INCOME>                                  107
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                     854
<NET-INVESTMENT-INCOME>                          (272)
<REALIZED-GAINS-CURRENT>                          2571
<APPREC-INCREASE-CURRENT>                         6894
<NET-CHANGE-FROM-OPS>                             9193
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            7
<DISTRIBUTIONS-OF-GAINS>                            52
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                           4154
<NUMBER-OF-SHARES-REDEEMED>                        212
<SHARES-REINVESTED>                                  4
<NET-CHANGE-IN-ASSETS>                           73486
<ACCUMULATED-NII-PRIOR>                           (27)
<ACCUMULATED-GAINS-PRIOR>                           53
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                              632
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                    875
<AVERAGE-NET-ASSETS>                             48677
<PER-SHARE-NAV-BEGIN>                            13.45 
<PER-SHARE-NII>                                  (.09)
<PER-SHARE-GAIN-APPREC>                           4.38
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                          .03
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              17.71
<EXPENSE-RATIO>                                   1.79
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        



</TABLE>


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