AMERICAN CENTURY STRATEGIC ASSET ALLOCATIONS INC
N-30D, 1997-07-25
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                                SEMIANNUAL REPORT

                             [american century logo]
                                    American
                                   Century(sm)

                                  May 31, 1997

                                    AMERICAN
                                     CENTURY
                                      GROUP

                       Strategic Allocation: Conservative
                         Strategic Allocation: Moderate
                        Strategic Allocation: Aggressive

[front cover]

                               TABLE OF CONTENTS

Report Highlights........................................... 1
Our Message to You.......................................... 2
Period Overview............................................. 3
Strategic Allocation: Conservative
   Performance & Portfolio Information...................... 5
   Management Q & A......................................... 6
   Schedule of Investments.................................. 9
   Financial Highlights.....................................54
Strategic Allocation: Moderate
   Performance & Portfolio Information......................17
   Management Q & A.........................................18
   Schedule of Investments..................................21
   Financial Highlights.....................................55
Strategic Allocation: Aggressive
   Performance & Portfolio Information......................32
   Management Q & A.........................................33
   Schedule of Investments..................................36
   Financial Highlights.....................................56
Statements of Assets and Liabilities........................47
Statements of Operations....................................48
Statements of Changes in Net Assets.........................49
Notes to Financial Statements...............................50
Share Class and Retirement
Account Information.........................................57
Background Information
   Investment Philosophy & Policies.........................60
   Comparative Indices......................................60
   Lipper Rankings..........................................60
   Portfolio Management Team................................60
   Neutral Asset Mixes......................................60
Glossary....................................................61

American Century  Investments offers you nearly 70 fund choices covering stocks,
bonds, money markets,  specialty investments and blended portfolios. To help you
find the funds that may meet your needs, we have divided  American Century funds
into three groups based on investment style and objectives.  These groups, which
appear below, are designed to help simplify your fund decisions.

                 American Century Investments -- Family of Funds

     BENHAM GROUP           AMERICAN CENTURY GROUP       TWENTIETH CENTURY GROUP

  MONEY MARKET FUNDS          ASSET ALLOCATION &
 GOVERNMENT BOND FUNDS          BALANCED FUNDS              U.S. GROWTH FUNDS
DIVERSIFIED BOND FUNDS     CONSERVATIVE EQUITY FUNDS       INTERNATIONAL FUNDS
 MUNICIPAL BOND FUNDS           SPECIALTY FUNDS

                       Strategic Allocation: Conservative
                       Strategic Allocation: Moderate
                       Strategic Allocation: Aggressive

We welcome your comments or questions about this report.  
See the back cover for ways to contact us by mail, phone or e-mail.

Twentieth  Century and the Benham Group are registered marks of American Century
Services Corporation and Benham Management Corporation,  respectively.  American
Century is a service mark of American Century Services Corporation.


                                                    American Century Investments


                               REPORT HIGHLIGHTS

Period Overview

o    U.S. stocks  continued to produce healthy gains during the six months ended
     May 31, 1997. However, the market experienced significant price volatility.

o    U.S.  bond  performance  was  mixed but  relatively  flat  overall.  Strong
     economic growth in the first quarter of 1997 led to rising interest rates.

o    Among  foreign  stock  markets,  Europe  had the  strongest  returns of any
     region, while Asian markets suffered sizable losses.

o    Foreign bond markets produced  favorable returns as interest rates declined
     around the globe.

o    The  U.S.  dollar  strengthened  against  most  major  foreign  currencies,
     reducing returns from foreign investments.

Strategic Allocation: Conservative

o    The fund  underperformed its Lipper peer group average during the six-month
     period.

o    The fund maintained a fairly neutral asset mix during the period,  although
     we expanded its foreign stock position late in the period.

o    We  adjusted  the  fund's  U.S.  stock  investment  approach  by  adding  a
     quantitative component. We believe this will help provide greater stability
     to the fund's U.S. stock holdings.

o    Going forward,  we plan to continue  overweighting the fund's foreign stock
     holdings, especially in Europe, while underweighting U.S. stocks.

Strategic Allocation: Moderate

o    The fund  underperformed its Lipper peer group average during the six-month
     period.

o    The fund maintained a fairly neutral asset mix during the period,  although
     we expanded its foreign stock position late in the period.

o    We  adjusted  the  fund's  U.S.  stock  investment  approach  by  adding  a
     quantitative  component.  We believe this will help provide greater balance
     to the fund's U.S. stock holdings.

o    Going forward,  we plan to continue  overweighting the fund's foreign stock
     holdings, especially in Europe, while underweighting U.S. stocks.

Strategic Allocation: Aggressive

o    The fund  underperformed its Lipper peer group average during the six-month
     period.

o    The fund maintained a fairly neutral asset mix during the period,  although
     we expanded its foreign stock position late in the period.

o    We  adjusted  the  fund's  U.S.  stock  investment  approach  by  adding  a
     quantitative component. We believe this will help provide greater diversity
     to the fund's U.S. stock holdings.

o    Going forward,  we plan to continue  overweighting the fund's foreign stock
     holdings, especially in Europe, while underweighting U.S. stocks.

                                  CONSERVATIVE
                               INVESTOR CLASS(1)

                      Total Returns:         AS OF 5/31/97
                         6 Months                 2.84%(2)
                         1 Year                      9.16%

                      Net Assets:            $52.1 million
                         (AS of 5/31/97)

                      Inception Date:              2/15/96

                      Ticker Symbol:                 TWSCX

                                    MODERATE
                               INVESTOR CLASS(1)

                      Total Returns:         AS OF 5/31/97
                         6 Months                 4.06%(2)
                         1 Year                     10.92%

                      Net Assets:           $131.2 million
                         (AS of 5/31/97)

                      Inception Date:              2/15/96

                      Ticker Symbol:                 TWSMX

                                   AGGRESSIVE
                               INVESTOR CLASS(1)

                      Total Returns:         AS OF 5/31/97
                         6 Months                 4.55%(2)
                         1 Year                     10.55%

                      Net Assets:            $85.2 million
                         (AS of 5/31/97)

                      Inception Date:              2/15/96

                      Ticker Symbol:                 TWSAX

                      (1) See Share Classes, page 57.
                      (2) Not annualized.


Semiannual Report                                         Report Highlights    1


                               OUR MESSAGE TO YOU

[photo of James E. Stowers III]

The widely divergent performance of the world's financial markets during the six
months ended May 31, 1997,  underscored the importance of diversified investing.
European and American stock markets  produced  strong  returns,  but Asian stock
markets  suffered losses.  Domestic bond returns were mixed,  while the stronger
U.S. dollar hurt foreign bond returns.

Within this  environment,  the  diversified  portfolios of the  Strategic  Asset
Allocation  funds  produced   positive  returns   consistent  with  their  asset
allocation  strategies.  In the following pages, our investment  management team
discusses the  performance  of the global  financial  markets in more detail and
describes how your fund was managed during the period.

The Strategic Asset Allocation  funds' management team, headed by Jeff Tyler and
Brian Howell,  includes some of American  Century's most experienced  investment
professionals.  Recently,  our international  investment team, which manages the
foreign stock portion of the funds, welcomed Mark Kopinski back after a two-year
stint with another investment company. Kopinski helped create American Century's
international management team in 1991, and his years of experience and expertise
in Asia will be invaluable to the management of our  international  stock funds,
as well as the Strategic Asset Allocation funds.

We also strengthened our corporate team. In June, Bill Lyons, American Century's
chief operating officer,  was named president,  assuming full responsibility for
the company's day-to-day  operations.  With this change, I will be able to focus
more time on developing and refining new investment  technologies and tools that
build on and leverage the proprietary  system my father  pioneered 25 years ago.
One of our goals is to ensure that we continue to evolve and  innovate--building
the  investment  tools today that will help lead us and our investors to success
in the next century.

We appreciate your confidence in American Century and look forward to continuing
to serve you.

Sincerely,

/s/James E. Stowers III 
James E. Stowers III
Chief Executive Officer


2    Our Message to You                             American Century Investments


                                PERIOD OVERVIEW

U.S. Stocks

The U.S.  stock market,  which has been rising  steadily  since the beginning of
1995, produced healthy gains during the six months ended May 31, 1997. The major
U.S. stock indexes (such as the Dow Jones  Industrials  and the S&P 500) reached
record highs on their way to returns of more than 10% for the six-month period.

Despite solidly positive  returns,  U.S. stocks  experienced  substantial  price
volatility,  especially among the stocks of smaller companies. Uncertainty about
the  economy  and  corporate  earnings  growth  led to a  significant  amount of
day-to-day volatility early in the six-month period.

In February  and March,  concerns  about  rising  interest  rates and  declining
corporate  profits took their toll, and stock prices began to slide.  Technology
companies  and other  "aggressive  growth"  stocks--so  called  because of their
propensity for sharp price  swings--suffered the biggest losses, falling as much
as 25% as a group.

But the downward trend reversed in May, when interest rate expectations  leveled
off and  first-quarter  corporate  earnings reports showed  surprisingly  strong
growth. Aggressive growth stocks produced the strongest rebound,  retracing most
of their earlier losses in just a few weeks.

As the accompanying table shows,  small-capitalization  stocks (such as those in
the Russell 2000) underperformed  large-capitalization  stocks (such as those in
the S&P 500) during the period. This was a continuation of a trend that began in
early  1996,  when  uncertain  investors  fled from  smaller-company  stocks and
flocked to the largest, most-liquid stocks.

The greater  volatility  of small-cap  stocks  compounded  this  disparity.  The
small-cap stock universe includes many aggressive growth stocks,  whose inherent
volatility hurt their performance during the period.

However, the more extreme price swings of small-cap stocks worked in their favor
toward the end of the period.  Renewed optimism and relatively attractive prices
brought  investors back into small-cap stocks in late April.  After reaching its
lowest  point of the period on April 25, the Russell  2000  returned  nearly 14%
through the end of May. By comparison,  the S&P 500 posted a return of about 11%
during the same period.

U.S. Bonds

U.S.  bonds  produced  mixed returns  during the six months ended May 31. Rising
yields  caused bond prices to fall,  but the  interest  paid out to  bondholders
offset  the price  declines  to a large  degree.  Short-term  securities,  which
usually suffer less price depreciation than longer-term securities when interest
rates rise, were the best performers.  For example,  the two-year  Treasury note
posted a 2.2% return for the six-month  period,  while the 30-year Treasury bond
returned -3.6%.

Bond  yields  fell (and bond  prices  rose) at the  beginning  of the  period in
response to evidence of moderating U.S.  economic growth and low inflation.  But
by the beginning of 1997,  stronger  economic  growth and rising wage  pressures
rekindled  concerns  about  inflation.  In  an  effort  to  head  off  potential
inflation, the Federal Reserve raised short-term interest rates in March.

As a result,  bond  yields  soared  throughout  the first  quarter of 1997.  The
30-year  Treasury  bond  yield,  which had  fallen as low as 6.35% in  December,
climbed to 7.10% by the end of March.  The bond market settled down in April and
May, rallying  slightly as inflation  remained subdued and economic growth began
to slow.

U.S. STOCK MARKET PERFORMANCE
For the six-month period ended May 31, 1997
S&P 500                           13.17%
Russell 2000                       8.40%


U.S. BOND MARKET PERFORMANCE
For the six-month period ended May 31, 1997
Salomon Brothers Broad
   Investment Grade Bond Index     0.96%
Lehman Aggregate Bond Index        0.94%


Semiannual Report                                           Period Overview    3


                                PERIOD OVERVIEW

Mortgage-backed  securities were the top performers  among U.S. bonds during the
six-month  period,  followed by  corporate  bonds.  With bond  prices  declining
slightly  overall,  yield was the most significant  contributor to bond returns.
Mortgage-backed  and corporate  securities tend to have higher yields than other
domestic bonds.  Treasury  bonds,  which typically offer the lowest yields among
U.S. fixed-income securities, produced the weakest returns.

Foreign Stocks

Global stock returns varied  dramatically  by region during the six months ended
May 31. Europe's stock markets  produced the strongest  returns of any region in
the world,  while Asian markets  suffered  sizable  losses.  The Morgan  Stanley
EAFE(R)  Index--a  broad measure of  international  stock  performance--returned
4.04% (in U.S. dollar terms) during the six-month period.

The  continued  strength of the U.S.  dollar  weighed  heavily on foreign  stock
returns for U.S.  investors.  The dollar rose by 11% against the German mark and
2% against the Japanese yen during the period. As the accompanying  table shows,
the  EAFE(R)'s  return in local  currencies  was  substantially  higher than its
return in dollars.

European stock markets excelled during the period because of favorable  economic
conditions,  falling interest rates and low inflation.  Corporate  restructuring
also  boosted  the  performance  of  European   equities.   Although  Spain  and
Switzerland  were the  top-performing  stock markets in Europe--with  returns of
more  than  30% (in  local  currencies)  during  the  period--nearly  all of the
continent's markets returned 20% or more.

The Japanese stock market  continued to languish.  Although the Japanese economy
showed  signs of life after  seven  years of  recession,  most of the growth was
driven by export industries. The rest of Southeast Asia--including Thailand, the
Philippines  and  Singapore--struggled  as economic growth in the region slowed.
Collapsing  speculative  investments  and a failure to invest in  infrastructure
during the good times  dragged down stock prices in these  countries.  Hong Kong
was a notable  exception,  producing strong stock market performance thanks to a
thriving economy.

Latin America replaced Asia as the hottest region for growth. Political changes,
increased privatization and economic reform have improved the global credibility
of the Latin equity markets.

Foreign Bonds

Foreign bond markets produced  favorable returns during the six months ended May
31 as global interest rates  continued to decline.  However,  the  strengthening
U.S. dollar hurt foreign bond returns for U.S. investors.

As the  index  returns  in the  tables  on  this  page  and  the  previous  page
illustrate, foreign bonds outperformed U.S. bonds in local currencies during the
six-month  period.  But when the foreign bond index's return is translated  into
dollars, U.S. bonds win out by a substantial margin.

Interest rates generally  declined as the world's central banks made a concerted
effort to revitalize  economic growth.  In Europe,  preparation for Economic and
Monetary Union in 1999 held interest  rates down across the continent.  Japanese
rates remained at historic lows as the country tried to end its lengthy economic
downturn.

The exception is Latin America,  where  interest rates have remained  relatively
high.  Many  Latin  American  countries  are  experiencing  explosive  levels of
economic growth,  and the potential for rising inflation has propped up interest
rates.

FOREIGN STOCK MARKET  PERFORMANCE  
For the  six-month  period ended May 31, 1997
Morgan Stanley  EAFE(R) Index (in U.S.  dollars)     4.04%
Morgan  Stanley  EAFE(R) Index (in local currencies) 8.96%


FOREIGN BOND MARKET PERFORMANCE
For the six-month period ended May 31, 1997
Salomon Brothers Non-U.S. World Government
   Bond Index (in U.S. dollars)               - 4.98%
Salomon Brothers Non-U.S. World Government
   Bond Index (in local currencies)             2.01%


4    Period Overview                                American Century Investments

<TABLE>
<CAPTION>
                       STRATEGIC ALLOCATION: CONSERVATIVE

TOTAL RETURNS AS OF MAY 31, 1997
                                                                                        AVERAGE ANNUAL RETURNS
                                                                        6 MONTHS        1 YEAR     LIFE OF FUND
INVESTOR CLASS (inception 2/15/96)
<S>                                                                        <C>            <C>           <C>  
Strategic Allocation: Conservative ...................................     2.84%          9.16%         7.59%
S&P 500 ..............................................................    13.17%         29.48%        25.38%
Lehman Aggregate Bond Index ..........................................     0.94%          8.32%         5.36%(1)
Three-Month U.S. Treasury Bill .......................................     2.56%          5.17%         5.15%(1)
Average Income Fund(2) ...............................................     4.46%        13.26%         10.73%
Fund's Ranking Among Income Funds(2) .................................     --        42 out of 47   39 out of 46

ADVISOR CLASS (inception 10/2/96)
Strategic Allocation: Conservative ...................................     2.68%          --             6.11%
S&P 500 ..............................................................    13.17%          --            23.44%
Lehman Aggregate Bond Index ..........................................     0.94%          --             4.94%
Three-Month U.S. Treasury Bill .......................................     2.56%          --             3.41%
</TABLE>
(1)  Since  2/29/96,  the date closest to the fund's  inception  for which index
     return data are available.

(2)  According to Lipper Analytical Services.

See pages 57, 60 and 61 for more information about returns,  share classes,  the
comparative indices and Lipper fund rankings.

<TABLE>
[line graph - data below]

GROWTH OF $10,000 OVER THE LIFE OF THE FUND (Investor Class)
Value on 5/31/97

$10,000 investment made 2/29/96


           Strategic: Conservative       S&P 500     Lehman Aggregate Bond Index   3-Month T-Bill Index
<C>               <C>                   <C>                   <C>                        <C>    
2/29/96           $10,000               $10,000               $10,000                    $10,000
3/31/96           $10,040               $10,133                $9,930                    $10,041
4/30/96           $10,145               $10,269                $9,875                    $10,082
5/31/96           $10,186               $10,504                $9,855                    $10,125
6/30/96           $10,221               $10,586                $9,987                    $10,167
7/31/96           $10,037               $10,102               $10,014                    $10,211
8/31/96           $10,160               $10,292                $9,997                    $10,254
9/30/96           $10,440               $10,911               $10,172                    $10,297
10/31/96          $10,584               $11,197               $10,397                    $10,339
11/30/96          $10,832               $12,018               $10,575                    $10,382
12/31/96          $10,772               $11,822               $10,477                    $10,425
1/31/97           $10,876               $12,544               $10,509                    $10,469
2/28/97           $10,814               $12,619               $10,535                    $10,513
3/31/97           $10,636               $12,141               $10,418                    $10,558
4/30/97           $10,762               $12,847               $10,574                    $10,603
5/31/97           $11,118               $13,600               $10,674                    $10,648
</TABLE>

Past  performance  does not  guarantee  future  results.  Investment  return and
principal  value will fluctuate,  and redemption  value may be more or less than
original  cost.  Data quoted is for Investor Class only;  performance  for other
classes will vary due to differences  in fee  structures  (see the Total Returns
table  above).  The graph  begins on  2/29/96,  the date  closest  to the fund's
2/15/96 inception date for which index return data are available.

The line representing the fund's total return includes  operating expenses (such
as transaction  costs and management fees) that reduce returns,  while the total
return lines of the indices do not.

[pie chart]

ASSET ALLOCATION AS OF MAY 31, 1997

Percent of Fund Investments
U.S. Stocks 32%
Foreign Stocks 8%
U.S. Bonds 38%
Foreign Bonds 7%
Money Market
Securities 15%

See page 60 for the fund's neutral asset mix.


Semiannual Report                        Strategic Allocation: Conservative    5


                       STRATEGIC ALLOCATION: CONSERVATIVE

Management Q & A

An interview with Jeff Tyler and Brian Howell,  lead  portfolio  managers on the
American Century Strategic Asset Allocation funds management team.

How did the fund perform?

For the six-month  period ended May 31, 1997,  the fund's  Investor Class shares
posted a total return of 2.84%, compared with the 4.46% average return of the 57
"Income Funds"  tracked by Lipper  Analytical  Services.  (See the Total Returns
table on the previous page for other fund performance comparisons.)

How did the fund's asset mix change over the past six months?

We  maintained  a mostly  neutral  position for the fund.  The only  significant
adjustment we made to the fund's asset mix was to  underweight  domestic  stocks
and overweight  foreign  stocks during the latter half of the six-month  period.
Increased volatility in the U.S. stock market led us to look abroad, where stock
returns were beginning to reflect improving economic conditions.

In particular,  we emphasized  European stocks (see the chart on the next page),
which  provided  the best equity  returns of any region in the world  during the
period.

But weren't those returns reduced by the stronger U.S. dollar?

That's true, but even after you account for the currency losses,  European stock
returns  were still on par with U.S.  stock  returns and better than  returns in
other  regions of the world.  In  addition,  we  mitigated  some of the currency
losses by hedging a portion of the fund's foreign  investments  against European
currencies.

What is currency hedging?

It's a strategy designed to reduce or eliminate the negative effects of currency
fluctuations on foreign  investment  returns.  When the U.S. dollar  strengthens
against  foreign  currencies,  gains earned on investments  denominated in those
currencies  translate  into fewer  dollars;  hedging is intended to offset these
currency losses.

For the fund,  currency hedges typically involve forward currency contracts that
allow the fund to lock in a specific  exchange rate.  This approach  removes the
effect of  currency  exchange  rates and  creates a "pure  play" on the  foreign
securities.

Did you hedge all of the fund's European investments?

No. Although the fund can hedge as much as 100% of its foreign  assets,  we only
hedged  about 35% of the fund's  European  holdings.  We felt this was a prudent
amount that would help  mitigate  currency  losses  while  retaining  the fund's
exposure to non-dollar-denominated investments.

We also hedged a portion of the fund's Japanese holdings early in the period. We
removed the hedge in April, when the dollar reached a four-year high against the
Japanese yen and Japanese finance ministry  officials  publicly  expressed their
desire for a weaker dollar.

What are your plans for the fund's asset allocation structure going forward?

We will  likely  continue  its current  positioning--neutral  in bonds and cash,
underweighted in U.S. stocks and overweighted in foreign stocks.  We still think
the most attractive  opportunities are in the stock markets of Europe,  where we
see parallels with the U.S. in the early 1990s.


6    Strategic Allocation: Conservative             American Century Investments


                       STRATEGIC ALLOCATION: CONSERVATIVE

Coming out of a recession,  U.S. corporations used technological  innovation and
downsizing  to cut costs,  improve  efficiency  and  increase  productivity.  In
addition,  the rise of temporary employment services and outsourcing changed the
nature of the U.S. labor market and lowered the unemployment rate.

Much of Europe is now in the same  situation--a  weak economic  environment  and
high levels of unemployment  are leading to changing labor markets and corporate
restructuring.  We expect  these  changes to boost  corporate  profits in Europe
going forward.

What about the U.S. stock market?

We continue to marvel at the  resiliency  of the U.S.  stock  market.  We've had
reservations  about the market's  stretched  valuations for some time, but stock
prices have  continued  to climb.  Despite our  concerns,  we followed our asset
allocation  model, and the fund's weighting in domestic stocks did not stray too
far from neutral.

The  danger  to U.S.  stocks in the  second  half of 1997 is  stronger  economic
growth, which would likely result in rising inflation and higher interest rates.
Higher rates could squeeze  corporate  earnings,  and weaker earnings growth has
been  responsible  for much of the  punishment  and volatility in the U.S. stock
market recently.

FUND'S U.S. STOCKS AS OF MAY 31, 1997
Number of Companies        268
Dividend Yield             2.00%
Price/Earnings Ratio       24.9

                               % of Fund's    % of
                               U.S. Stocks    Fund

Top 5 U.S. Stocks
Exxon Corp.                       2.4%        0.8%
Giant Food Inc. CI A              2.2%        0.7%
Amoco Corp.                       1.7%        0.5%
Mallinckrodt Inc.                 1.7%        0.5%
Florida Progress Corp.            1.6%        0.5%


FUND'S FOREIGN STOCKS AS OF MAY 31, 1997
Number of Companies        64
Dividend Yield             1.31%


                                   % of Fund's   % of
                        Country  Foreign Stocks  Fund

Top 5 Foreign Stocks
Novartis AG            Switzerland    5.2%      0.4%
Volkswagen AG            Germany      4.3%      0.3%
Credit Suisse Group    Switzerland    3.9%      0.3%
Sankyo Co. Ltd.           Japan       3.5%      0.3%
Daimler-Benz AG          Germany      3.2%      0.3%

[pie chart]
Percent of Fund's Foreign Stocks
Europe 65%
Asia/Pacific 28%
Americas
(excluding U.S.) 7%


Semiannual Report                        Strategic Allocation: Conservative    7


                       STRATEGIC ALLOCATION: CONSERVATIVE

We plan to  maintain a slightly  underweighted  position  in U.S.  stocks  going
forward. We've also made some adjustments to our investment approach to make the
fund's domestic stock allotment more conservative.

Can you elaborate on these adjustments?

The fund's U.S. stock holdings  represent a combination of aggressive growth and
value stocks, with an emphasis on the  more-conservative  value style.  However,
this  mix has  produced  more  volatility  than we  feel  is  appropriate  for a
conservative  asset allocation  fund. As a result,  we are adding a quantitative
equity component to complement the other two investment styles.

Our quantitative  approach  employs a highly  structured model that ranks stocks
based on a variety of performance and risk-related  criteria.  The ultimate goal
is to produce a group of stocks that balance high return potential with the risk
characteristics of the S&P 500.

We believe that combining this quantitative  strategy with our aggressive growth
and value  approaches will provide  greater  stability and balance to the fund's
U.S. stock holdings.

Bonds still make up the  largest  portion of the fund's  portfolio.  What's your
outlook for bonds?

We  feel  that   interest   rates  have  bottomed   worldwide,   and  we  expect
stable-to-rising  interest rates going forward.  The Federal Reserve has already
raised rates in the U.S., and economic growth is likely to pick up in Europe and
Japan by the end of the year.

As a result,  our outlook is neutral to somewhat  negative for bonds, and we may
look to reduce the fund's  bond  position  later this year.  We could see fairly
flat bond performance worldwide over the next six months, much like the past six
months.

[pie charts]

FUND'S U.S. BONDS AS OF MAY 31, 1997
Number of Securities       29
Weighted Average Maturity  12.06 years
Average Duration           4.66 years

Percent of Fund's U.S. Bonds
U.S. Treasury Notes 54%
Mortgage-Backed
Securities 28%
Corporate Bonds 14%
U.S. Treasury Bonds 4%


FUND'S FOREIGN BONDS AS OF MAY 31, 1997 
Number of Securities         6 
Weighted  Average Maturity   4.89 years 
Average Duration             4.23 years

Percent of Fund's Foreign Bonds
Europe 88%
Americas
(excluding U.S.) 12%


8    Strategic Allocation: Conservative             American Century Investments


                            SCHEDULE OF INVESTMENTS
                       STRATEGIC ALLOCATION:CONSERVATIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

COMMON STOCKS
AEROSPACE & DEFENSE--1.1%
     2,300    Bombardier Inc. ORD                                 $  48,433
     5,100    British Aerospace plc ORD                             103,891
       200    General Dynamics Corp.                                 14,975
     4,100    Litton Industries, Inc.(1)                            185,525
     1,100    Lockheed Martin Corp.                                 102,988
     2,800    Raytheon Co.                                          133,700
     1,200    SIFCO Industries, Inc.                                 17,400
     1,000    Triumph Group, Inc.(1)                                 25,625
                                                                  ---------
                                                                    632,537
                                                                  ---------
AIRLINES--0.2%
       800    AMR Corp.(1)                                           79,500
       100    Delta Air Lines Inc.                                    9,375
                                                                  ---------
                                                                     88,875
                                                                  ---------
AUTOMOBILES & AUTO PARTS--1.6%
       125    Beyerische Motoren Werke (BMW)
                AG ORD                                              102,536
     2,000    Bridgestone Corp. ORD                                  45,269
     2,300    Cooper Tire and Rubber Company                         51,463
     1,900    Daimler-Benz AG ORD                                   146,497
       300    Excel Industries, Inc.                                  5,437
     2,700    Ford Motor Co.                                        101,250
       400    General Motors Corp.                                   22,900
       100    Magna International Inc. Cl A                           5,375
     5,000    Sanden Corp. ORD                                       41,267
     4,300    Superior Industries International, Inc.               109,650
       900    Tower Automotive, Inc.(1)                              35,662
       300    Volkswagen AG ORD                                     194,195
                                                                  ---------
                                                                    861,501
                                                                  ---------
BANKING--2.6%
       600    Banc One Corp.                                         25,950
       200    BankAmerica Corp.                                      23,375
     1,900    Bank of Nova Scotia ORD                                78,985
       700    Chase Manhattan Corp.                                  66,150
       500    Citicorp                                               57,187
    11,000    Credito Italiano ORD                                   16,403

Shares                                                                  Value
- --------------------------------------------------------------------------------

     1,400    Deutsche Pfandbrief-und
                Hypothekenbank AG ORD                           $    82,498
       200    First Chicago NBD Corp.                                11,850
       800    First Union Corp.                                      68,700
     4,800    First Virginia Banks, Inc.                            268,800
     4,300    Mercantile Bancorporation Inc.                        253,700
       500    Morgan (J.P.) & Co.                                    53,750
       600    Norwest Corp.                                          32,100
     3,700    PNC Bank Corp.                                        154,937
       200    Pacific Century Financial
                Corporation                                           9,200
     5,112    Royal Bank of Scotland Group plc
                ORD                                                  50,287
       500    Societe Generale ORD                                   55,636
     2,200    Wachovia Corp.                                        133,925
                                                                  ---------
                                                                  1,443,433
                                                                  ---------
BIOTECHNOLOGY--0.6%
       200    Agouron Pharmaceuticals, Inc(1)                        16,038
     1,000    Amgen Inc.                                             66,937
     1,700    Centocor, Inc.(1)                                      59,712
       200    Incyte Pharmaceuticals, Inc.(1)                        13,050
     1,400    PAREXEL International Corp.(1)                         45,763
       700    PathoGenesis Corp.(1)                                  19,206
     2,500    QLT PhotoTherapeutics Inc. ORD(1)                      56,276
       700    Quintiles Transnational Corp.(1)                       43,750
       200    Sangstat Medical Corp.(1)                               4,963
       200    Vertex Pharmaceuticals, Inc.(1)                         8,050
                                                                  ---------
                                                                    333,745
                                                                  ---------
BUILDING & HOME IMPROVEMENTS--0.1%
     1,000    American Woodmark Corp.                                16,313
       400    Hunter Douglas N.V. ORD                                35,338
     1,600    Johns Manville Corp.                                   18,200
       300    Triangle Pacific Corp.(1)                               8,906
                                                                  ---------
                                                                     78,757
                                                                  ---------
BUSINESS SERVICES & SUPPLIES--0.8%
     1,800    AccuStaff, Inc.(1)                                     43,200
       100    Ceridian Corp.(1)                                       3,675
     1,500    Corrections Corp. of America(1)                        54,375
     1,200    F.Y.I. Inc.(1)                                         26,100
       800    Kvaerner ASA ORD                                       45,830
     1,200    Lason, Inc.(1)                                         26,175
     1,000    Market Facts, Inc.                                     12,063

See Notes to Financial Statements


Semiannual Report                        Strategic Allocation: Conservative    9


                            SCHEDULE OF INVESTMENTS
                       STRATEGIC ALLOCATION: CONSERVATIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

     1,300    NCO Group, Inc.(1)                                  $  43,306
       400    Omnicom Group Inc.                                     23,200
       500    Randstad Holdings N.V. ORD                             50,297
     2,200    Stork N.V. ORD                                         97,467
                                                                  ---------
                                                                    425,688
                                                                  ---------
CHEMICALS & RESINS--1.6%
       300    Akzo Nobel ORD                                         39,982
     1,200    Dow Chemical Co.                                      100,050
       100    du Pont (E.I.) de Nemours & Co.                        10,888
     5,300    Great Lakes Chemical Corp.                            259,037
        50    Henkel KGaA ORD                                         2,621
     4,600    Lubrizol Corp.                                        163,875
    11,300    Millennium Chemicals Inc.                             217,525
     2,900    Nalco Chemical Co.                                    107,663
                                                                  ---------
                                                                    901,641
                                                                  ---------
COMMUNICATIONS EQUIPMENT--1.0%
     2,000    ADC Telecommunications, Inc.(1)                        68,625
       300    Allen Group Inc. (The)(1)                               6,975
       100    Ascend Communications, Inc.(1)                          5,581
       900    Boston Technology, Inc.(1)                             25,875
       600    Comverse Technology, Inc.(1)                           27,375
     1,000    Lucent Technologies Inc.                               63,625
     1,000    Motorola, Inc.                                         66,375
       600    Natural MicroSystems Corp.(1)                          14,738
       700    Nokia Corp. Cl A ADR                                   46,200
     2,100    PairGain Technologies, Inc.(1)                         43,969
       800    SeaChange International, Inc.(1)                       17,450
     2,900    Tellabs, Inc.(1)                                      145,906
                                                                  ---------
                                                                    532,694
                                                                  ---------
COMMUNICATIONS SERVICES--1.2%
     1,400    AT&T Corp.                                             51,625
       600    Ameritech Corp.                                        39,300
     1,700    BellSouth Corp.                                        77,138
     9,300    Frontier Corp.                                        170,888
         7    Nippon Telegraph & Telephone ORD                       66,870
     2,800    SBC Communications Inc.                               163,800
     1,000    Telefonica de Espana ORD                               28,878
     3,100    Worldcom Inc.(1)                                       92,031
                                                                  ---------
                                                                    690,530
                                                                  ---------

Shares                                                                  Value
- --------------------------------------------------------------------------------

COMPUTER PERIPHERALS--0.3%
       100    Adaptec, Inc.(1)                                   $    3,681
       300    Cisco Systems Inc.(1)                                  20,269
     1,700    EMC Corp. (Mass.)(1)                                   67,787
     1,100    Quantum Corp.(1)                                       42,831
       100    Seagate Technology, Inc.(1)                             4,063
       100    3Com Corp.(1)                                           4,838
                                                                  ---------
                                                                    143,469
                                                                  ---------
COMPUTER SOFTWARE & SERVICES--0.9%
       100    Adobe Systems Inc.                                      4,478
       300    Cadence Design Systems, Inc.(1)                         9,975
     1,100    HBO & Co.                                              70,606
       500    JDA Software Group, Inc.(1)                            13,781
     1,300    Konami Co., Ltd. ORD                                   46,431
     1,400    McAfee Associates, Inc.(1)                             92,137
       600    Microsoft Corp.(1)                                     74,438
     5,418    Misys plc ORD                                         121,028
       650    Oracle Systems Corp.(1)                                30,347
       100    Parametric Technology Corp.(1)                          4,494
     1,200    Viisage Technology, Inc.(1)                            13,800
                                                                  ---------
                                                                    481,515
                                                                  ---------
COMPUTER SYSTEMS--0.7%
     1,000    Compaq Computer Corp.(1)                              108,250
       300    Hewlett-Packard Co.                                    15,450
     3,000    International Business Machines
                Corp.                                               259,500
       100    Sun Microsystems, Inc.(1)                               3,231
                                                                  ---------
                                                                    386,431
                                                                  ---------
CONSUMER PRODUCTS--0.5%
     1,200    Avon Products, Inc.                                    76,500
     4,000    Canon, Inc. ORD                                       101,553
       800    Colgate-Palmolive Co.                                  49,600
     1,500    Helen of Troy Ltd.(1)                                  39,750
                                                                  ---------
                                                                    267,403
                                                                  ---------
CONTROL & MEASUREMENT--0.1%
       200    Coherent, Inc.(1)                                       8,675
       200    Keyence Corporation ORD                                28,917
     1,300    Molecular Devices Corp.(1)                             19,094
                                                                  ---------
                                                                     56,686
                                                                  ---------

See Notes to Financial Statements


10   Strategic Allocation: Conservative             American Century Investments


                            SCHEDULE OF INVESTMENTS
                       STRATEGIC ALLOCATION: CONSERVATIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

DIVERSIFIED COMPANIES--0.8%
    10,842    BBA Group plc ORD                                 $    59,459
       800    General Electric Co. (U.S.)                            48,300
     5,240    Granada Group plc ORD                                  74,441
     1,000    Honeywell Inc.                                         72,750
     5,136    Siebe plc ORD                                          80,794
     1,400    Tyco International Ltd.                                88,900
                                                                  ---------
                                                                    424,644
                                                                  ---------
EDUCATION--0.1%
       950    Apollo Group Inc. Cl A(1)                              33,428
     1,000    Learning Tree International, Inc.(1)                   39,250
                                                                  ---------
                                                                     72,678
                                                                  ---------
ELECTRICAL & ELECTRONIC
COMPONENTS--2.7%
     6,900    AMP, Inc.                                             283,762
     1,400    Advantest Corp. ORD                                    95,426
       800    ANADIGICS, Inc.(1)                                     26,500
     3,300    Anicom, Inc.(1)                                        31,144
       100    Franklin Electronic Co., Inc.                           4,750
     2,000    Hoya Corp. ORD                                         91,054
       600    II-VI, Inc.(1)                                         11,550
       400    Innovex, Inc.                                          11,200
       700    Intel Corp.                                           106,006
       800    JPM Co. (The)(1)                                       24,400
       500    Jabil Circuit, Inc.(1)                                 29,281
       500    Lattice Semiconductor Corp.(1)                         28,938
     1,000    Nintendo Co., Ltd. ORD                                 78,317
     1,700    Phillips Electronics N.V.                              95,200
     1,200    REMEC, Inc.(1)                                         35,175
     1,000    Rohm Co. Ltd. ORD                                     104,135
       600    SGL CARBON Aktiengesellschaft
                ORD                                                  86,895
       300    Sanmina Corp.(1)                                       17,381
       900    Schneider SA ORD(1)                                    43,323
       600    Siemens AG ORD                                         33,889
     1,100    Sipex Corp.(1)                                         32,725
       800    Sony Corp. ORD                                         67,542
     1,000    Texas Instruments Inc.                                 89,875
     1,900    Vitesse Semiconductor Corp.(1)                         68,281
                                                                  ---------
                                                                  1,496,749
                                                                  ---------

Shares                                                                  Value
- --------------------------------------------------------------------------------

ENERGY (PRODUCTION & MARKETING)--3.7%
     3,400    Amoco Corp.                                       $   303,875
       800    Atlantic Richfield Co.                                116,400
     1,660    British-Borneo Petroleum
                Syndicate plc ORD                                    34,564
     3,500    Burlington Resources Inc.                             162,750
     4,200    Cairn Energy plc ORD(1)                                36,048
     2,200    Chevron Corp.                                         154,000
     7,200    Exxon Corp.                                           426,600
     3,400    MAPCO Inc.                                            107,950
     3,500    Murphy Oil Corp.                                      162,312
     1,800    Rigel Energy Corp. ORD(1)                              22,481
    12,700    Santos Ltd. ORD                                        51,986
     8,800    Seagull Energy Corp.(1)                               158,400
     1,000    Talisman Energy, Inc. ORD(1)                           32,785
     1,200    Texaco Inc.                                           130,950
       200    Union Texas Petroleum Holdings,
                Inc.                                                  4,025
     2,000    Unocal Corp.                                           85,250
     6,500    Woodside Petroleum Limited ORD                         54,821
                                                                  ---------
                                                                  2,045,197
                                                                  ---------
ENERGY (SERVICES)--0.8%
     1,400    Baker Hughes Inc.                                      52,500
       300    Diamond Offshore Drilling, Inc.(1)                     21,338
       800    Hvide Marine, Inc.(1)                                  19,000
       900    Marine Drilling Companies, Inc.(1)                     18,056
     1,900    Noble Drilling Corp.(1)                                41,325
       400    Oceaneering International, Inc.(1)                      6,800
       100    Rowan Companies, Inc.(1)                                2,313
       400    Schlumberger Ltd.                                      47,650
     2,700    Smedvig ASA Cl A ORD                                   65,966
     1,500    Smith International, Inc.(1)                           78,562
     1,400    Tidewater Inc.                                         58,975
       300    Trico Marine Services, Inc.(1)                         11,325
                                                                  ---------
                                                                    423,810
                                                                  ---------
ENVIRONMENTAL SERVICES--0.8%
     8,600    Browning-Ferris Industries, Inc.                      281,650
     1,400    Superior Services Inc.(1)                              30,800
     1,500    USA Waste Services, Inc.(1)                            54,375
     1,400    U.S. Filter Corp.(1)                                   44,100
       900    United Waste Systems, Inc.(1)                          34,369
                                                                  ---------
                                                                    445,294
                                                                  ---------
See Notes to Financial Statements


Semiannual Report                        Strategic Allocation: Conservative   11


                            SCHEDULE OF INVESTMENTS
                       STRATEGIC ALLOCATION: CONSERVATIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

FINANCIAL SERVICES--1.0%
     3,100    BHW Holding AG ORD(1)                               $  54,202
       300    Bear Stearns Companies Inc.                             9,750
     1,400    Credit Suisse Group ORD(1)                            176,115
     2,300    Federal National Mortgage
                Association                                         100,337
       300    Green Tree Financial Corp.                             10,500
     1,116    ING Groep N.V. ORD                                     49,384
       200    Lehman Brothers Holdings, Inc.                          8,075
       300    Merrill Lynch & Co., Inc.                              31,800
       200    Morgan Stanley Group, Inc.                             13,500
       700    Rental Service Corp.(1)                                15,225
     1,000    Salomon Inc.                                           53,625
        50    Takefuji Corporation ORD                                2,337
       866    Travelers Group, Inc.                                  47,522
                                                                  ---------
                                                                    572,372
                                                                  ---------
FOOD & BEVERAGE--1.2%
    13,525    Archer-Daniels-Midland Co.                            270,500
       300    Interstate Bakeries Corp.                              16,125
       600    Lance, Inc.                                            11,738
       300    Michael Foods, Inc.                                     4,256
       100    Nestle S.A. ORD                                       124,558
     2,200    Northland Cranberries, Inc.                            28,462
    10,000    Ralcorp Holdings, Inc.(1)                             121,250
     2,900    Universal Foods Corp.                                 104,037
                                                                  ---------
                                                                    680,926
                                                                  ---------
FURNITURE & FURNISHINGS--0.1%
     1,300    Miller (Herman), Inc.                                  46,312
                                                                  ---------
HEALTHCARE--0.7%
     1,100    Health Management
                Associates, Inc.(1)                                  32,175
     5,900    Humana Inc.(1)                                        133,487
       200    Lincare Holdings Inc.(1)                                7,788
       700    Oxford Health Plans, Inc.(1)                           49,219
       100    PhyCor, Inc.(1)                                         2,856
     1,900    Quorum Health Group, Inc.(1)                           67,569
     1,500    Tenet Healthcare Corp.(1)                              41,250
     1,200    United Healthcare Corp.                                67,800
                                                                  ---------
                                                                    402,144
                                                                  ---------

Shares                                                                  Value
- --------------------------------------------------------------------------------

INDUSTRIAL EQUIPMENT & MACHINERY--0.5%
       100    Caterpillar Inc.                                $       9,762
     4,400    Cooper Industries, Inc.                               224,400
       400    Ingersoll-Rand Co.                                     21,800
       100    Mannesmann AG ORD                                      40,692
                                                                  ---------
                                                                    296,654
                                                                  ---------
INSURANCE--2.6%
     1,000    AXA-UAP ORD                                            59,975
     1,700    Allstate Corp.                                        125,163
       200    American International Group, Inc.                     27,075
     1,513    Assurantieconcern Stad Rotterdam
                ORD                                                  67,819
     2,300    CNA Financial Corp.(1)                                235,462
     2,600    Chubb Corp. (The)                                     158,600
     2,100    Conseco Inc.                                           84,000
       300    General Re Corp.                                       52,575
       300    ITT Hartford Group, Inc.                               23,400
       400    Lincoln National Corp.                                 24,350
     2,600    NAC Re Corp.                                          103,675
       100    Ohio Casualty Corp.                                     4,125
     3,800    SAFECO Corp.                                          165,062
     1,000    Sampo Insurance Company Ltd.
                ORD                                                  87,417
     1,200    Skandia Forsakrings AB ORD                             42,406
     1,900    St. Paul Companies, Inc.                              136,088
       700    UNUM Corp.                                             55,388
                                                                  ---------
                                                                  1,452,580
                                                                  ---------
LEISURE--0.3%
       700    Doubletree Corp.(1)                                    31,456
       400    HFS, Inc.(1)                                           21,550
     1,300    Hilton Hotels Corporation                              36,725
       500    King World Productions, Inc.                           18,812
       200    WMS Industries Inc.(1)                                  4,150
     3,000    Yamaha Corp. ORD                                       57,059
                                                                  ---------
                                                                    169,752
                                                                  ---------
MACHINERY & EQUIPMENT--0.3%
       600    Applied Materials, Inc.(1)                             39,113
       300    Cymer, Inc.(1)                                         15,900
     1,000    Diebold, Inc.                                          37,500
     2,300    Intevac, Inc.(1)                                       36,512
       100    Timken Co.                                              6,863
     1,000    Veeco Instruments Inc.(1)                              41,500
                                                                  ---------
                                                                    177,388
                                                                  ---------
See Notes to Financial Statements


12   Strategic Allocation: Conservative             American Century Investments


                            SCHEDULE OF INVESTMENTS
                       STRATEGIC ALLOCATION: CONSERVATIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

MEDICAL EQUIPMENT & SUPPLIES--0.3%
       400    Hillenbrand Industries, Inc.                     $     18,850
     1,200    Sabratek Corp.(1)                                      32,025
     1,600    SeaMED Corp.(1)                                        27,600
     3,000    Terumo Corporation ORD                                 52,928
       100    Thermo Instrument Systems Inc.(1)                       3,425
       200    US Surgical Corp.                                       6,750
                                                                  ---------
                                                                    141,578
                                                                  ---------
METALS & MINING--0.2%
     1,500    Reynolds Metals Co.                                   101,813
       300    Vulcan Materials Co.                                   21,900
       100    Zeigler Coal Holding Co.                                2,325
       100    Zurn Industries, Inc.                                   2,650
                                                                  ---------
                                                                    128,688
                                                                  ---------
OFFICE EQUIPMENT & SUPPLIES--0.2%
     1,700    Xerox Corp.                                           115,175
                                                                  ---------
PAPER & FOREST PRODUCTS--0.9%
     3,300    Chesapeake Corp.                                      110,550
     1,300    Rayonier, Inc.                                         55,738
     2,000    Uni-Charm Corporation ORD                              67,473
     2,600    Union Camp Corp.                                      136,500
     3,500    Westvaco Corp.                                        109,375
                                                                  ---------
                                                                    479,636
                                                                  ---------
PERSONAL SERVICES--0.1%
     1,900    Stewart Enterprises, Inc. Cl A                         63,769
                                                                  ---------
PHARMACEUTICALS--2.3%
       700    Abbott Laboratories                                    44,100
       400    Bristol-Myers Squibb Co.                               29,350
     2,400    Dura Pharmaceuticals, Inc.(1)                          95,850
     1,300    Lilly (Eli) & Co.                                     120,900
     8,000    Mallinckrodt Inc.                                     299,000
       850    Medicis Pharmaceutical Corp.(1)                        28,953
     1,400    Merck & Co., Inc.                                     125,825
       174    Novartis AG ORD                                       237,049
     1,500    Omnicare, Inc.                                         42,937
     1,500    Pharmacia & Upjohn Inc.                                51,937
     5,000    Sankyo Company, Ltd. ORD                              158,785
       600    Warner-Lambert Co.                                     60,450
       200    Watson Pharmaceuticals Inc.(1)                          7,863
                                                                  ---------
                                                                  1,302,999
                                                                  ---------

Shares                                                                  Value
- --------------------------------------------------------------------------------

PRINTING & PUBLISHING--0.5%
     2,000    Banta Corp.                                         $  55,250
       100    Bowne & Co., Inc.                                       2,988
     2,000    McClatchy Newspapers, Inc.                             55,750
       500    Meredith Corp.                                         12,937
     2,200    Moore Corporation Ltd. ORD                             49,203
     4,800    VNU Tijdschriftengroep Nederland
                ORD                                                 108,579
                                                                  ---------
                                                                    284,707
                                                                  ---------
RAILROADS--0.4%
     4,400    CSX Corp.                                             233,200
                                                                  ---------
RESTAURANTS--0.1%
       400    Boston Chicken, Inc.(1)                                 7,225
       500    Logan's Roadhouse, Inc.(1)                             11,688
       200    Lone Star Steakhouse &
                Saloon, Inc.(1)                                       4,588
     1,000    PJ America, Inc.(1)                                    17,500
     1,000    Rainforest Cafe, Inc.(1)                               24,437
                                                                  ---------
                                                                     65,438
                                                                  ---------
RETAIL (APPAREL)--0.3%
       800    Genesco Inc.(1)                                        11,000
       600    Gucci Group N.V.                                       41,850
       900    Hot Topic, Inc.(1)                                     25,987
     1,500    Jones Apparel Group, Inc.(1)                           70,312
     1,200    Ross Stores, Inc.                                      34,125
                                                                  ---------
                                                                    183,274
                                                                  ---------
RETAIL (FOOD & DRUG)--1.2%
     5,800    Albertson's, Inc.                                     194,300
     1,440    Circle K Japan Co., Ltd. ORD                           76,960
    11,600    Giant Food Inc. Cl A                                  382,075
       400    Universal Corp.                                        14,550
                                                                  ---------
                                                                    667,885
                                                                  ---------
RETAIL (GENERAL MERCHANDISE)--1.2%
       800    Consolidated Stores Corp.(1)                           30,600
     8,000    Dillard Department Stores, Inc. Cl A                  270,000
     1,400    Family Dollar Stores, Inc.                             36,050
       300    Fingerhut Companies, Inc.                               5,288
     1,300    Kohl's Corp.(1)                                        70,037
     4,200    Penney (J.C.) Company, Inc.                           216,300
       100    Pinault-Printemps-Redoute SA
                ORD                                                  42,009
                                                                  ---------
                                                                    670,284
                                                                  ---------

See Notes to Financial Statements


Semiannual Report                        Strategic Allocation: Conservative   13


                            SCHEDULE OF INVESTMENTS
                       STRATEGIC ALLOCATION: CONSERVATIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

RETAIL (SPECIALTY)--0.2%
     1,500    Action Performance Cos. Inc.(1)                $       36,094
     1,700    Cortefiel, S.A. ORD                                    62,867
       600    Home Depot, Inc.                                       37,800
                                                                  ---------
                                                                    136,761
                                                                  ---------
RUBBER & PLASTICS(2)
       200    Carlisle Companies, Inc.                                6,100
                                                                  ---------
STEEL(2)
       300    Intermet Corp.                                          4,125
       400    USX-Marathon Group                                     11,900
                                                                  ---------
                                                                     16,025
                                                                  ---------
TEXTILES & APPAREL--0.2%
       700    Sport-Haley, Inc.(1)                                   13,213
       300    Timberland Co. (The)(1)                                17,587
     2,400    Wolverine World Wide, Inc.                             62,100
                                                                  ---------
                                                                     92,900
                                                                  ---------
TOBACCO--0.2%
       600    Consolidated Cigar Holdings, Inc.(1)                   18,150
       400    Fortune Brands Pty. Ltd.(1)                            19,600
       600    General Cigar Holdings, Inc.(1)                        17,700
       900    Philip Morris Companies Inc.                           39,600
                                                                  ---------
                                                                     95,050
                                                                  ---------
TRANSPORTATION--0.2%
     1,200    Allied Holdings, Inc.(1)                               11,850
     5,014    Stagecoach Holdings plc ORD                            54,995
     1,200    XTRA Corp.                                             51,450
                                                                  ---------
                                                                    118,295
                                                                  ---------
UTILITIES--2.4%
     9,900    Florida Progress Corp.                                290,812
       700    General Public Utilities Corp.                         24,500
    10,100    New York State Electric & Gas
                Corp.                                               219,675
     4,500    Potomac Electric Power                                103,500
     1,600    Public Service Enterprise Group Inc.                   39,600
     6,300    Texas Utilities Electric Co.                          216,563
     5,600    Union Electric Co.                                    205,100
     9,800    Wisconsin Energy Corp.                                236,425
                                                                  ---------
                                                                  1,336,175
                                                                  ---------
TOTAL COMMON STOCKS--39.8%                                       22,169,344
   (Cost  $19,853,567)                                           ----------

Shares/Principal Amount                                                 Value
- --------------------------------------------------------------------------------

PREFERRED STOCKS--0.1%
CHEMICALS & RESINS
     1,050    Henkel KGaA ORD                                $       59,349
                                                                  ---------
   (Cost $48,751)

U.S. TREASURY SECURITIES
$2,200,000    U.S. Treasury Note, 5.00%,
                2/15/99                                           2,160,136
 3,250,000    U.S. Treasury Note, 6.375%,
                3/31/01                                           3,239,860
   335,000    U.S. Treasury Note, 6.625%,
                7/31/01                                             336,779
 2,145,000    U.S. Treasury Note, 7.50%,
                5/15/02                                           2,234,832
   300,000    U.S. Treasury Note, 5.875%,
                11/15/05                                            284,625
 3,040,000    U.S  Treasury Note, 7.00%,
                7/15/06                                           3,103,658
   875,000    U.S. Treasury Bond, 6.75%,
                8/15/26                                             851,760
                                                                  ---------
TOTAL U.S. TREASURY SECURITIES--21.9%                            12,211,650
   (Cost  $12,235,548)                                           ----------

MORTGAGE-BACKED SECURITIES(3)
   236,816    FNMA Pool #369034, 6.50%,
                2/1/12                                              231,296
   525,170    FNMA Pool #377181, 6.50%,
                4/1/12                                              512,928
   946,157    FNMA Pool #378039, 6.50%,
                5/1/12                                              924,102
    97,783    FNMA Pool #250576, 7.00%,
                6/1/26                                               95,307
 1,003,167    FNMA Pool #373510, 7.50%,
                3/1/27                                            1,000,559
   264,252    GNMA Pool #392995, 8.75%,
                3/15/25                                             276,014
   193,198    GNMA Pool #372335, 7.50%,
                4/15/25                                             192,665
   148,517    GNMA Pool #001991, 9.00%,
                4/20/25                                             155,100
   526,784    GNMA Pool #416856, 7.50%,
                10/15/25                                            526,094

See Notes to Financial Statements


14   Strategic Allocation: Conservative             American Century Investments


                            SCHEDULE OF INVESTMENTS
                       STRATEGIC ALLOCATION: CONSERVATIVE

MAY 31, 1997 (UNAUDITED)

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

$  294,140    GNMA Pool #422006, 7.50%,
                5/15/26                                         $   293,328
   100,060    GNMA Pool #402682, 7.50%,
                6/15/26                                              99,784
 1,664,034    GNMA Pool #431942, 8.25%,
                7/15/26                                           1,708,481
                                                                  ---------
TOTAL MORTGAGE-BACKED
SECURITIES--10.8%                                                 6,015,658
                                                                  ---------
   (Cost  $5,989,676)

CORPORATE BONDS
AEROSPACE & DEFENSE--0.9%
   200,000    Lockheed Martin Corp., 6.85%,
                5/15/01                                             200,000
   300,000    Lockheed Martin Corp., 7.25%,
                5/15/06                                             301,125
                                                                  ---------
                                                                    501,125
                                                                  ---------
BANKING--1.9%
   550,000    Citicorp, 7.125%, 5/15/06                             545,875
   500,000    First Bank System Inc., 7.625%,
                5/1/05                                              512,500
                                                                  ---------
                                                                  1,058,375
                                                                  ---------
ENERGY (PRODUCTION & MARKETING)--0.9%
   500,000    Enron Corp., 6.75%, 7/1/05                            482,500
                                                                  ---------
FINANCIAL SERVICES--0.3%
   200,000    Ford Motor Credit Co., 6.125%,
                1/9/06                                              185,750
                                                                  ---------
METALS & MINING--0.2%
   100,000    Alcan Aluminium Ltd., 5.875%,
                4/1/00                                               98,125
                                                                  ---------
RETAIL (GENERAL MERCHANDISE)--0.2%
   100,000    Sears, Roebuck and Co., 6.00%,
                5/1/00                                               98,125
                                                                  ---------
TOBACCO--0.4%
   250,000    Philip Morris Companies Inc.,
                6.80%, 12/1/03                                      244,375
                                                                  ---------
UTILITIES--0.5%
   250,000    Virginia Electric & Power, 8.00%,
                3/1/04                                              263,437
                                                                  ---------
TOTAL CORPORATE BONDS--5.3%                                       2,931,812
                                                                  ---------
   (Cost  $2,923,467)

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

SOVEREIGN GOVERNMENTS & AGENCIES
DEM1,200,000 Bundesobligation, 5.875%,
               5/15/00                                        $     737,239
DEM1,750,000 Federal Republic of Germany,
               6.00%, 9/15/03                                     1,066,828
CAD600,000 Government of Canada, 7.25%,
               6/1/03                                               461,235
FRF1,500,000 Government of France, 8.50%,
               4/25/03                                              304,520
ITL75,000,000  Republic of Italy, 3.50%,
               6/20/01                                              684,598
GBP300,000 United Kingdom Treasury,
               8.00%, 6/10/03                                       512,139
                                                                  ---------
TOTAL SOVEREIGN
GOVERNMENTS & AGENCIES--6.8%                                      3,766,559
                                                                  ---------
   (Cost  $3,911,670)

COMMERCIAL PAPER(4)
BANKING--1.8%
$1,000,000    Spintab-Swedmortgage AB, 5.39%,
                6/30/97                                             995,449
                                                                  ---------
FINANCIAL SERVICES--8.3%
 1,163,000    Bass Finance (C.I.) Ltd., 5.43%,
                6/13/97                                           1,160,849
 3,500,000    Hitachi Credit America Corp.,
                5.40%-5.45%, 6/25/97
                through 7/17/97                                   3,483,350
                                                                  ---------
                                                                  4,644,199
                                                                  ---------
UTILITIES--1.8%
 1,000,000    Southern California Gas Co., 5.42%,
                7/7/97 (Acquired 4/4/97,
                $985,456)(5)                                        994,430
                                                                  ---------
TOTAL COMMERCIAL PAPER--11.9%                                     6,634,078
                                                                  ---------
   (Cost $6,634,078)

TEMPORARY CASH INVESTMENTS--3.4%
   Repurchase Agreement, Morgan (J.P.) & Co. Inc.,
      (U.S. Treasury obligations), in a joint trading
      account at 5.50%, dated 5/30/97, due
      6/2/97 (Delivery value $1,900,871)                          1,900,000
                                                                  ---------
   (Cost $1,900,000)
TOTAL INVESTMENT SECURITIES--100.0%                             $55,688,450
                                                                ===========
   (Cost  $53,496,757)

See Notes to Financial Statements


Semiannual Report                        Strategic Allocation: Conservative   15


                            SCHEDULE OF INVESTMENTS
                       STRATEGIC ALLOCATION: CONSERVATIVE

MAY 31, 1997 (UNAUDITED)

FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS
     Contracts          Settlement                        Unrealized
      to Sell              Date           Value              (Loss)
- --------------------------------------------------------------------
      191,406   CHF       6/30/97       $135,940          $  (6,157)
    1,120,704   DEM       6/30/97        658,359            (13,039)
      768,768   FRF       6/30/97        133,671             (2,023)
      113,679   GBP       6/30/97        186,270             (1,865)
      225,166   NLG       6/30/97        177,567             (1,807)
                                      ------------------------------
                                      $1,291,807           $(24,891)
                                      ==============================
(Value on Settlement Date $1,266,916)

Notes to Schedule of Investments
ADR = American Depositary Receipt
CAD = Canadian Dollar
CHF = Swiss Franc
DEM = German Mark
FNMA = Federal National Mortgage Association 
FRF = French Franc 
GBP = British Pound 
GNMA = Government National Mortgage Association 
ITL = Italian Lira 
JPY = Japanese Yen 
NLG = Netherlands Guilder 
ORD = Foreign Ordinary Share 
(1) Non-income producing.
(2) Industry is less than 0.05% of the Fund's total investment securities. 
(3) Final maturity indicated. Expected remaining maturity used for purposes of 
calculating the weighted average portfolio maturity. 
(4) The rates for commercial paper are the yield to maturity at May 31, 1997. 
(5) Security was purchased under Rule 144A or Section 4(2) of the Securities Act
of 1933 and, unless registered under the Act or exempted from registration, may
only be sold to qualified institutional investors. The aggregate value of
restricted securities at May 31, 1997, was $994,430, which represented 1.8% of
net assets.

See Notes to Financial Statements


16   Strategic Allocation: Conservative             American Century Investments

<TABLE>
<CAPTION>
                         STRATEGIC ALLOCATION: MODERATE

TOTAL RETURNS AS OF MAY 31, 1997
                                                                                        AVERAGE ANNUAL RETURNS
                                                                        6 MONTHS        1 YEAR     LIFE OF FUND
INVESTOR CLASS (inception 2/15/96)
<S>                                                                        <C>          <C>            <C>   
Strategic Allocation: Moderate ........................................    4.06%        10.92%         11.02%
S&P 500 ...............................................................   13.17%        29.48%         25.38%
Lehman Aggregate Bond Index ...........................................    0.94%         8.32%          5.36%(1)
Three-Month U.S. Treasury Bill ........................................    2.56%         5.17%          5.15%(1)
Average Balanced Fund(2) ..............................................    5.98%        16.15%         13.61%
Fund's Ranking Among Balanced Funds(2) ................................    --       269 out of 301  238 out of 289

ADVISOR CLASS (inception 10/2/96)
Strategic Allocation: Moderate ........................................    3.91%          --            7.48%
S&P 500 ...............................................................   13.17%          --           23.44%
Lehman Aggregate Bond Index ...........................................    0.94%          --            4.94%
Three-Month U.S. Treasury Bill ........................................    2.56%          --            3.41%

(1)  Since  2/29/96,  the date closest to the fund's  inception  for which index
     return data are available.

(2)  According to Lipper Analytical Services.
</TABLE>

See pages 57, 60 and 61 for more information about returns,  share classes,  the
comparative indices and Lipper fund rankings.

<TABLE>
[line graph - data below]

GROWTH OF $10,000 OVER THE LIFE OF THE FUND (Investor Class)
Value on 5/31/97

$10,000 investment made 2/29/96

             Strategic: Moderate         S&P 500     Lehman Aggregate Bond Index   3-Month T-Bill Index
<C>               <C>                   <C>                   <C>                        <C>    
2/29/96           $10,000               $10,000               $10,000                    $10,000
3/31/96           $10,081               $10,133                $9,930                    $10,041
4/30/96           $10,314               $10,269                $9,875                    $10,082
5/31/96           $10,394               $10,504                $9,855                    $10,125
6/30/96           $10,411               $10,586                $9,987                    $10,167
7/31/96           $10,085               $10,102               $10,014                    $10,211
8/30/96           $10,309               $10,292                $9,997                    $10,254
9/30/96           $10,650               $10,911               $10,172                    $10,297
10/31/96          $10,773               $11,197               $10,397                    $10,339
11/30/96          $11,080               $12,018               $10,575                    $10,382
12/31/96          $11,019               $11,822               $10,477                    $10,425
1/31/97           $11,204               $12,544               $10,509                    $10,469
2/28/97           $11,122               $12,619               $10,535                    $10,513
3/31/97           $10,825               $12,141               $10,418                    $10,558
4/30/97           $10,990               $12,847               $10,574                    $10,603
5/31/97           $11,530               $13,600               $10,674                    $10,648


Past  performance  does not  guarantee  future  results.  Investment  return and
principal  value will fluctuate,  and redemption  value may be more or less than
original  cost.  Data quoted is for Investor Class only;  performance  for other
classes will vary due to differences  in fee  structures  (see the Total Returns
table  above).  The graph  begins on  2/29/96,  the date  closest  to the fund's
2/15/96 inception date for which index return data are available.

The line representing the fund's total return includes  operating expenses (such
as transaction  costs and management fees) that reduce returns,  while the total
return lines of the indices do not.
</TABLE>

[pie chart]

ASSET ALLOCATION AS OF MAY 31, 1997
Percent of Fund Investments
U.S. Stocks 44%
Foreign Stocks 15%
U.S. Bonds 22%
Foreign Bonds 8%
Money Market
Securities 11%

See page 60 for the fund's neutral asset mix.


Semiannual Report                            Strategic Allocation: Moderate   17


                         STRATEGIC ALLOCATION: MODERATE

Management Q & A

An interview with Jeff Tyler and Brian Howell,  lead  portfolio  managers on the
American Century Strategic Asset Allocation funds management team.

How did the fund perform?

For the six-month  period ended May 31, 1997,  the fund's  Investor Class shares
posted a total return of 4.06%,  compared with the 5.98%  average  return of the
338  "Balanced  Funds"  tracked by Lipper  Analytical  Services.  (See the Total
Returns table on the previous page for other fund performance comparisons.)

How did the fund's asset mix change over the past six months?

The fund was  underweighted  in cash and overweighted in foreign stocks for most
of the period. We brought the fund's cash position back to neutral by the end of
the period.

We retained the fund's  overweighting in foreign equities by underweighting U.S.
stocks.  Increased  volatility  in the U.S.  stock market led us to look abroad,
where stock returns were beginning to reflect improving economic conditions.  In
particular,  we  emphasized  European  stocks  (see the chart on the next page),
which  provided  the best equity  returns of any region in the world  during the
period.

But weren't those returns reduced by the stronger U.S. dollar?

That's true, but even after you account for the currency losses,  European stock
returns  were still on par with U.S.  stock  returns and better than  returns in
other  regions of the world.  In  addition,  we  mitigated  some of the currency
losses by hedging a portion of the fund's foreign  investments  against European
currencies.

What is currency hedging?

It's a strategy designed to reduce or eliminate the negative effects of currency
fluctuations on foreign  investment  returns.  When the U.S. dollar  strengthens
against  foreign  currencies,  gains earned on investments  denominated in those
currencies  translate  into fewer  dollars;  hedging is intended to offset these
currency losses.

For the fund,  currency hedges typically involve forward currency contracts that
allow the fund to lock in a specific  exchange rate.  This approach  removes the
effect of  currency  exchange  rates and  creates a "pure  play" on the  foreign
securities.

Did you hedge all of the fund's European investments?

No. Although the fund can hedge as much as 100% of its foreign  assets,  we only
hedged  about 35% of the fund's  European  holdings.  We felt this was a prudent
amount that would help  mitigate  currency  losses  while  retaining  the fund's
exposure to non-dollar-denominated investments.

We also hedged a portion of the fund's Japanese holdings early in the period. We
removed the hedge in April, when the dollar reached a four-year high against the
Japanese yen and Japanese finance ministry  officials  publicly  expressed their
desire for a weaker dollar.

What are your plans for the fund's asset allocation structure going forward?

We will  likely  continue  its current  positioning--neutral  in bonds and cash,
underweighted in U.S. stocks and overweighted in foreign stocks.  We still think
the most attractive  opportunities are in the stock markets of Europe,  where we
see parallels with the U.S. in the early 1990s.


18   Strategic Allocation: Moderate                 American Century Investments


                         STRATEGIC ALLOCATION: MODERATE

Coming out of a recession,  U.S. corporations used technological  innovation and
downsizing  to cut costs,  improve  efficiency  and  increase  productivity.  In
addition,  the rise of temporary employment services and outsourcing changed the
nature of the U.S. labor market and lowered the unemployment rate.

Much of Europe is now in the same  situation--a  weak economic  environment  and
high levels of unemployment  are leading to changing labor markets and corporate
restructuring.  We expect  these  changes to boost  corporate  profits in Europe
going forward.

What about the U.S. stock market?

We continue to marvel at the  resiliency  of the U.S.  stock  market.  We've had
reservations  about the market's  stretched  valuations for some time, but stock
prices have  continued  to climb.  Despite our  concerns,  we followed our asset
allocation  model, and the fund's weighting in domestic stocks did not stray too
far from neutral.

The  danger  to U.S.  stocks in the  second  half of 1997 is  stronger  economic
growth, which would likely result in rising inflation and higher interest rates.
Higher rates could squeeze  corporate  earnings,  and weaker earnings growth has
been  responsible  for much of the  punishment  and volatility in the U.S. stock
market recently.

FUND'S U.S. STOCKS AS OF MAY 31, 1997
Number of Companies        307
Dividend Yield             1.74%
Price/Earnings Ratio       26.5

                               % of Fund's    % of
                               U.S. Stocks    Fund

Top 5 U.S. Stocks
Exxon Corp.                       1.7%        0.8%
Giant Food Inc. CI A              1.5%        0.7%
Amoco Corp.                       1.4%        0.6%
IBM Corp.                         1.3%        0.6%
Browning-Ferris Industries, Inc.  1.2%        0.5%

FUND'S FOREIGN STOCKS AS OF MAY 31, 1997
Number of Companies        149
Dividend Yield             1.32%


                                       % of Fund's     % of 
                         Country     Foreign Stocks    Fund 
                                                            
Top 5 Foreign Stocks                                        
Novartis AG            Switzerland        2.8%         0.4% 
Volkswagen AG            Germany          2.6%         0.4% 
Daimler-Benz AG          Germany          2.6%         0.4% 
Credit Suisse Group    Switzerland        2.2%         0.3% 
HSBC Holdings plc       Hong Kong         2.2%         0.3% 

[pie chart]
                                                   
Percent of Fund's Foreign Stocks
Europe 68%
Asia/Pacific 26%
Americas
(excluding U.S.) 6%


Semiannual Report                            Strategic Allocation: Moderate   19


                         STRATEGIC ALLOCATION: MODERATE

We plan to  maintain a slightly  underweighted  position  in U.S.  stocks  going
forward. We've also made some adjustments to our investment approach to give the
fund's domestic stock allotment more balance.

Can you elaborate on these adjustments?

The fund's U.S. stock holdings  represent a combination of aggressive growth and
value stocks.  However,  this mix has produced more  volatility  than we feel is
appropriate  for the fund.  As a result,  we are  adding a  quantitative  equity
component to complement the other two investment styles.

Our quantitative  approach  employs a highly  structured model that ranks stocks
based on a variety of performance and risk-related  criteria.  The ultimate goal
is to produce a group of stocks that balance high return potential with the risk
characteristics of the S&P 500.

We believe that combining this quantitative  strategy with our aggressive growth
and value  approaches will provide  greater  stability and balance to the fund's
U.S. stock holdings.

What's your outlook for bonds?

We  feel  that   interest   rates  have  bottomed   worldwide,   and  we  expect
stable-to-rising  interest rates going forward.  The Federal Reserve has already
raised rates in the U.S., and economic growth is likely to pick up in Europe and
Japan by the end of the year.

As a result,  our outlook is neutral to somewhat  negative for bonds, and we may
look to reduce the fund's  bond  position  later this year.  We could see fairly
flat bond performance worldwide over the next six months, much like the past six
months.

[pie charts]

FUND'S U.S. BONDS AS OF MAY 31, 1997
Number of Securities       45
Weighted Average Maturity  11.05 years
Average Duration           4.57 years

Percent of Fund's U.S. Bonds
U.S. Treasury Notes 45%
Mortgage-Backed
Securities 26%
Corporate Bonds 22%
U.S. Treasury Bonds 7%

FUND'S FOREIGN BONDS AS OF MAY 31, 1997 
Number of Securities 8 
Weighted  Average Maturity 4.87 years 
Average Duration 4.21 years

Percent of Fund's Foreign Bonds
Europe 91%
Americas
(excluding U.S.) 9%


20   Strategic Allocation: Moderate                 American Century Investments


                            SCHEDULE OF INVESTMENTS
                         STRATEGIC ALLOCATION: MODERATE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

COMMON STOCKS
AEROSPACE & DEFENSE--1.7%
     1,100    Boeing Co.                                       $   115,775
     5,500    Bombardier Inc. ORD                                  115,819
    16,000    British Aerospace plc ORD                            325,933
    18,500    Cobham PLC ORD                                       198,666
       500    Falck A/S ORD                                        137,021
     1,100    General Dynamics Corp.                                82,362
    11,000    Litton Industries, Inc.(1)                           497,750
     2,800    Lockheed Martin Corp.                                262,150
     7,100    Raytheon Co.                                         339,025
     6,000    SIFCO Industries, Inc.                                87,000
     6,300    Triumph Group, Inc.(1)                               161,438
                                                                ----------
                                                                 2,322,939
                                                                ----------
AIRLINES--0.2%
     1,800    AMR Corp.(1)                                         178,875
     1,100    Delta Air Lines Inc.                                 103,125
                                                                ----------
                                                                   282,000
                                                                ----------
AUTOMOBILES & AUTO PARTS--2.0%
       300    Beyerische Motoren Werke
                (BMW) AG ORD                                       246,086
     6,000    Bridgestone Corp. ORD                                135,806
     5,800    Cooper Tire and Rubber Company                       129,775
     6,700    Daimler-Benz AG ORD                                  516,593
       900    Excel Industries, Inc.                                16,313
     7,000    Ford Motor Co.                                       262,500
     2,500    General Motors Corp.                                 143,125
     1,200    ITT Industries, Inc.                                  29,700
       900    Kiekert AG ORD(1)                                     38,997
     8,000    MBM Resources Berhad ORD                              18,623
     1,700    Magna International Inc. Cl A                         91,375
       100    Porsche AG ORD                                       120,786
    11,000    Sanden Corp. ORD                                      90,787
    10,700    Superior Industries International, Inc.              272,850
     4,300    Tower Automotive, Inc.(1)                            170,388
       800    Volkswagen AG ORD                                    517,854
                                                                ----------
                                                                 2,801,558
                                                                ----------

Shares                                                                  Value
- --------------------------------------------------------------------------------

BANKING--3.8%
     2,800    Banc One Corp.                                   $   121,100
     4,800    Bank of Nova Scotia ORD                              199,543
     1,100    BankAmerica Corp.                                    128,563
       900    Bankers Trust New York Corp.                          76,163
     2,900    Banque Nationale de Paris ORD(1)                     119,258
     3,300    Chase Manhattan Corp.                                311,850
     2,400    Citicorp                                             274,500
    27,100    Credito Italiano ORD                                  40,410
     2,900    Deutsche Pfandbrief-und
                Hypothekenbank AG ORD                              170,888
     2,300    First Chicago NBD Corp.                              136,275
     3,600    First Union Corp.                                    309,150
    12,100    First Virginia Banks, Inc.                           677,600
    14,400    HSBC Holdings plc ORD                                436,730
    10,800    Mercantile Bancorporation Inc.                       637,200
     2,600    Morgan (J.P.) & Co.                                  279,500
     3,200    Nordlandsbanken ORD                                   76,833
     2,700    Norwest Corp.                                        144,450
     9,300    PNC Bank Corp.                                       389,437
    48,000    PT Bank Bira ORD                                      73,474
    17,512    Royal Bank of Scotland Group
                plc ORD                                            172,266
     4,100    Security Bank Corp. ORD(1)                             6,373
     1,100    Societe Generale ORD                                 122,398
       100    Unionbancal Corp.                                      6,625
     5,300    Wachovia Corp.                                       322,638
                                                                ----------
                                                                 5,233,224
                                                                ----------
BIOTECHNOLOGY--1.1%
       900    Agouron Pharmaceuticals, Inc.(1)                      72,169
     5,100    Amgen Inc.                                           341,381
     4,683    Biocompatibles International plc
                ORD(1)                                              99,811
     5,700    Centocor, Inc.(1)                                    200,212
       700    Incyte Pharmaceuticals, Inc.(1)                       45,675
     6,800    PAREXEL International Corp.(1)                       222,275
     3,200    PathoGenesis Corp.(1)                                 87,800
    10,200    QLT PhotoTherapeutics, Inc. ORD(1)                   229,605
     2,300    Quintiles Transnational Corp.(1)                     143,750
     1,300    Sangstat Medical Corp.(1)                             32,256
     1,200    Vertex Pharmaceuticals, Inc.(1)                       48,300
                                                                ----------
                                                                 1,523,234
                                                                ----------

See Notes to Financial Statements


Semiannual Report                            Strategic Allocation: Moderate   21


                            SCHEDULE OF INVESTMENTS
                         STRATEGIC ALLOCATION: MODERATE

MAY 31, 1997 (UNAUDITED)
Shares                                                                  Value
- --------------------------------------------------------------------------------

BROADCASTING & MEDIA--0.1%
       300    Central European Media
                Enterprises Ltd. Cl A(1)                     $       6,975
       627    Havas Advertising SA ORD                              66,611
                                                                ----------
                                                                    73,586
                                                                ----------
BUILDING & HOME IMPROVEMENTS--0.4%
     5,200    American Woodmark Corp.                               84,825
       900    Hunter Douglas N.V. ORD                               79,511
     8,500    Johns Manville Corp.                                  96,687
     2,100    Lafarge Corp.                                         51,975
     5,000    Royal Group Technologies Ltd.
                ORD(1)                                             122,354
     1,800    Triangle Pacific Corp.(1)                             53,438
                                                                ----------
                                                                   488,790
                                                                ----------
BUSINESS SERVICES & SUPPLIES--1.5%
     5,700    AccuStaff, Inc.(1)                                   136,800
    37,800    Capita Group Plc ORD                                 154,933
    30,000    Corporate Services Group plc ORD                      89,271
     5,000    Corrections Corp. of America(1)                      181,250
     3,000    Esselte AB Cl B ORD                                   70,935
     6,000    F.Y.I. Inc.(1)                                       130,500
       600    Goudsmit NV ORD                                       81,935
     1,600    Kvaerner ASA ORD                                      91,661
     5,900    Lason, Inc.(1)                                       128,694
    17,000    M.A.I.D. plc ORD(1)                                   51,980
     5,600    Market Facts, Inc.                                    67,550
     6,500    NCO Group, Inc.(1)                                   216,531
     1,500    Omnicom Group Inc.                                    87,000
    12,000    Parity plc ORD                                       110,174
     1,700    Randstad Holdings N.V. ORD                           171,010
     6,100    Stork N.V. ORD                                       270,249
                                                                ----------
                                                                 2,040,473
                                                                ----------
CHEMICALS & RESINS--1.6%
       650    Akzo Nobel ORD                                        86,628
     3,000    Dow Chemical Co.                                     250,125
    13,300    Great Lakes Chemical Corp.                           650,038
        60    Henkel KGaA ORD                                        3,145
    11,600    Lubrizol Corp.                                       413,250
    28,100    Millennium Chemicals Inc.                            540,925
     7,200    Nalco Chemical Co.                                   267,300
                                                                ----------
                                                                 2,211,411
                                                                ----------

Shares                                                                  Value
- --------------------------------------------------------------------------------

COMMUNICATIONS EQUIPMENT--1.6%
     5,700    ADC Telecommunications, Inc.(1)                  $   195,581
     2,600    Allen Group Inc. (The)(1)                             60,450
       100    Ascend Communications, Inc.(1)                         5,581
     4,400    Boston Technology, Inc.(1)                           126,500
     2,800    Comverse Technology, Inc.(1)                         127,750
     2,100    Ericsson (L.M.) Telephone Co. ADR                     74,944
     4,391    Lucent Technologies Inc.                             279,377
     2,500    Motorola, Inc.                                       165,938
     2,900    Natural MicroSystems Corp.(1)                         71,231
     1,400    Nokia Corp. Cl A ADR                                  92,400
     1,000    Northern Telecom Ltd. ORD(1)                          83,905
     4,800    Orckit Communications Ltd.(1)                         64,200
     7,000    PairGain Technologies, Inc.(1)                       146,563
     4,000    SeaChange International, Inc.(1)                      87,250
    11,600    Tandberg Television ASA ORD(1)                       105,871
    10,900    Tellabs, Inc.(1)                                     548,406
                                                                ----------
                                                                 2,235,947
                                                                ----------
COMMUNICATIONS SERVICES--2.0%
     3,500    AT&T Corp.                                           129,062
       700    Alcatel Alsthom Compagnie
                Generale ORD(1)                                     75,946
     2,800    Ameritech Corp.                                      183,400
     1,300    Bell Atlantic Corp.                                   91,000
     4,200    BellSouth Corp.                                      190,575
    18,000    Datacraft Asia Limited ORD                            54,720
    23,200    Frontier Corp.                                       426,300
    33,600    Hong Kong Telecommunications
                Ltd. ORD                                            74,368
        32    Nippon Telegraph & Telephone ORD                     305,693
     8,100    SBC Communications Inc.                              473,850
     2,100    Telecom Argentina STET - France
                Telecom S.A. ADR                                   112,087
     5,800    Telefonica de Espana ORD                             167,493
    14,500    Worldcom Inc.(1)                                     430,469
                                                                ----------
                                                                 2,714,963
                                                                ----------
COMPUTER PERIPHERALS--0.4%
       800    Adaptec, Inc.(1)                                      29,450
     1,400    Cisco Systems Inc.(1)                                 94,587
     7,700    EMC Corp. (Mass.)(1)                                 307,038
     3,800    Quantum Corp.(1)                                     147,963
                                                                ----------
                                                                   579,038
                                                                ----------

See Notes to Financial Statements


22   Strategic Allocation: Moderate                 American Century Investments


                            SCHEDULE OF INVESTMENTS
                         STRATEGIC ALLOCATION: MODERATE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

COMPUTER SOFTWARE & SERVICES--1.9%
     1,300    Adobe Systems Inc.                              $     58,216
     3,400    Azlan Group plc ORD                                   33,585
     1,600    Cadence Design Systems, Inc.(1)                       53,200
     3,300    Getronics NV ORD                                     112,660
     5,000    HBO & Co.                                            320,937
     8,000    JBA Holdings Plc ORD                                 124,602
     2,700    JDA Software Group, Inc.(1)                           74,419
     3,800    Konami Co., Ltd. ORD                                 135,720
     4,600    McAfee Associates, Inc.(1)                           302,737
       600    Medic Computer Systems, Inc.(1)                       10,388
     3,100    Microsoft Corp.(1)                                   384,594
    12,434    Misys plc ORD                                        277,753
     2,850    Oracle Systems Corp.(1)                              133,059
     2,080    Ordina Beheer N.V. ORD(1)                            156,331
     5,800    Sage Group plc (The) ORD                              62,142
     1,000    Shared Medical Systems Corp.                          52,688
     1,400    TT Tieto OY ORD                                      118,032
     3,000    Tecnomatix Technologies Ltd.(1)                       92,625
       500    Veritas Software Corp.(1)                             24,813
     5,700    Viisage Technology, Inc.(1)                           65,550
                                                                ----------
                                                                 2,594,051
                                                                ----------
COMPUTER SYSTEMS--1.1%
     5,000    Compaq Computer Corp.(1)                             541,250
     1,200    Computerland Poland S.A. ORD                          33,245
       400    Dell Computer Corp.(1)                                44,975
       800    Gateway 2000, Inc.(1)                                 53,100
     1,700    Hewlett-Packard Co.                                   87,550
     9,000    International Business Machines
                Corp.                                              778,500
     1,000    OPTIMUS S.A. ORD                                      32,322
                                                                ----------
                                                                 1,570,942
                                                                ----------
CONSUMER PRODUCTS--0.9%
     5,900    Avon Products, Inc.                                  376,125
     2,300    Bang & Olufsen Holding A/S ORD                       137,625
    13,000    Canon, Inc. ORD                                      330,049
     3,400    Colgate-Palmolive Co.                                210,800
     7,000    Helen of Troy Ltd.(1)                                185,500
                                                                ----------
                                                                 1,240,099
                                                                ----------

Shares                                                                  Value
- --------------------------------------------------------------------------------

CONTROL & MEASUREMENT--0.2%
       700    Coherent, Inc.(1)                               $     30,362
       400    Keyence Corporation ORD                               57,834
     8,100    Molecular Devices Corp.(1)                           118,969
                                                                ----------
                                                                   207,165
                                                                ----------
DIVERSIFIED COMPANIES--1.3%
    27,675    BBA Group plc ORD                                    151,773
     4,556    Bidvest Group Ltd. ORD                                31,968
     5,900    Bodycote International plc ORD                        72,064
     3,400    General Electric Co. (U.S.)                          205,275
    18,409    Granada Group plc ORD                                261,523
    80,000    Guangzhou Investments Company
                Ltd. ORD                                            39,750
     2,500    Hexagon AB ORD                                        70,095
     4,600    Honeywell Inc.                                       334,650
     8,100    Investment AB Bure ORD                               100,472
     6,598    Siebe plc ORD                                        103,793
     6,300    Tyco International Ltd.                              400,050
                                                                ----------
                                                                 1,771,413
                                                                ----------
EDUCATION--0.2%
     3,300    Apollo Group Inc. Cl A(1)                            116,119
     4,300    Learning Tree International, Inc.(1)                 168,775
                                                                ----------
                                                                   284,894
                                                                ----------
ELECTRICAL & ELECTRONIC
COMPONENTS--3.9%
    17,100    AMP, Inc.                                            703,237
     2,520    Advantest Corp. ORD                                  171,766
     4,100    ANADIGICS, Inc.(1)                                   135,812
    14,700    Anicom, Inc.(1)                                      138,731
    13,000    Elec & Eltek International Company
                Ltd. ORD                                            76,700
     1,100    Fujimi Incorporated ORD                               64,943
     5,000    Hoya Corp. ORD                                       227,635
     3,500    II-VI, Inc.(1)                                        67,375
     2,100    Innovex Inc.                                          58,800
     3,800    Intel Corp.                                          575,462
     2,700    Jabil Circuit, Inc.(1)                               158,119
     4,000    JPM Co. (The)(1)                                     122,000
     1,500    Lattice Semiconductor Corp.(1)                        86,813
       500    Leitch Technology Corp. ORD                           11,854
     3,200    Nintendo Co., Ltd. ORD                               250,613

See Notes to Financial Statements


Semiannual Report                            Strategic Allocation: Moderate   23


                            SCHEDULE OF INVESTMENTS
                         STRATEGIC ALLOCATION: MODERATE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

     1,200    Noritsu Koki Co. Limited ORD                    $     55,252
     6,100    Phillips Electronics N.V.                            341,600
     5,800    REMEC, Inc.(1)                                       170,013
     2,300    Rofin-Sinar Technologies Inc.(1)                      35,363
     3,000    Rohm Co. Ltd. ORD                                    312,406
     1,500    SGL CARBON Aktiengesellschaft
                ORD                                                217,238
     1,700    Sanmina Corp.(1)                                      98,494
     3,200    Schneider SA ORD(1)                                  154,037
     1,400    Siemens AG ORD                                        79,075
     6,100    Sipex Corp.(1)                                       181,475
     2,000    Sony Corp. ORD                                       168,854
     4,600    Texas Instruments Inc.                               413,425
     6,500    Vitesse Semiconductor Corp.(1)                       233,594
                                                                ----------
                                                                 5,310,686
                                                                ----------
ENERGY (PRODUCTION & MARKETING)--4.2%
     9,200    Amoco Corp.                                          822,250
     1,900    Atlantic Richfield Co.                               276,450
     5,270    British-Borneo Petroleum
                Syndicate plc ORD                                  109,730
     8,700    Burlington Resources Inc.                            404,550
    22,200    Cairn Energy plc ORD(1)                              190,538
     6,700    Chevron Corp.                                        469,000
    17,900    Exxon Corp.                                        1,060,575
     8,400    MAPCO Inc.                                           266,700
     8,600    Murphy Oil Corp.                                     398,825
     2,800    Quaker Chemical Corp.                                 45,850
     1,900    Rigel Energy Corp. ORD(1)                             23,730
       500    Royal Dutch Petroleum Co.                             97,625
    23,900    Santos Ltd. ORD                                       97,832
    21,800    Seagull Energy Corp.(1)                              392,400
     1,100    Shell Transport & Trading Co. ADR                    131,312
     8,000    Talisman Energy, Inc. ORD(1)                         262,281
     3,600    Texaco Inc.                                          392,850
       600    Union Texas Petroleum Holdings,
                Inc.                                                12,075
     5,000    Unocal Corp.                                         213,125
     9,600    Woodside Petroleum Limited ORD                        80,967
                                                                ----------
                                                                 5,748,665
                                                                ----------

Shares                                                                  Value
- --------------------------------------------------------------------------------

ENERGY (SERVICES)--1.2%
     2,500    Aker Maritime ASA ORD                           $     41,948
     3,600    Baker Hughes Inc.                                    135,000
       700    Diamond Offshore Drilling, Inc.(1)                    49,787
     4,500    Hvide Marine, Inc.(1)                                106,875
     2,000    IHC Caland N.V. ORD(1)                               108,204
     5,200    Marine Drilling Companies, Inc.(1)                   104,325
     7,000    Noble Drilling Corp.(1)                              152,250
     2,600    Oceaneering International, Inc.(1)                    44,200
     1,300    Rowan Companies, Inc.(1)                              30,062
     1,500    Schlumberger Ltd.                                    178,687
     5,800    Smedvig ASA Cl A ORD                                 141,704
       775    Smedvig ASA Cl B ORD                                  18,826
     4,500    Smith International, Inc.(1)                         235,688
     4,800    Tidewater Inc.                                       202,200
     1,400    Trico Marine Services, Inc.(1)                        52,850
     1,300    Western Atlas Inc.(1)                                 88,238
                                                                ----------
                                                                 1,690,844
                                                                ----------
ENVIRONMENTAL SERVICES--1.0%
    22,100    Browning-Ferris Industries, Inc.                     723,775
     7,300    Superior Services Inc.(1)                            160,600
     4,000    Tomra Systems ASA ORD                                 91,549
     4,800    USA Waste Services, Inc.(1)                          174,000
     5,200    U.S. Filter Corp.(1)                                 163,800
     3,000    United Waste Systems, Inc.(1)                        114,562
                                                                ----------
                                                                 1,428,286
                                                                ----------
FINANCIAL SERVICES--2.2%
     9,900    BHW Holding AG ORD(1)                                173,098
     2,600    Bear Stearns Companies Inc.                           84,500
     3,600    Credit Suisse Group ORD(1)                           452,866
     1,300    Equitable Companies Inc.                              40,950
    10,200    Federal National Mortgage
                Association                                        444,975
     1,600    Green Tree Financial Corp.                            56,000
     5,240    ING Groep N.V. ORD                                   231,875
       100    Julius Baer Holding AG ORD                           137,650
     6,235    Kempen & Company NV ORD                              190,436
     2,600    Lehman Brothers Holdings, Inc.                       104,975
     1,800    Merrill Lynch & Co., Inc.                            190,800
       900    Money Store Inc. (The)                                23,119
     2,300    Morgan Stanley Group, Inc.                           155,250

See Notes to Financial Statements


24   Strategic Allocation: Moderate                 American Century Investments


                            SCHEDULE OF INVESTMENTS
                         STRATEGIC ALLOCATION: MODERATE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

     5,880    Newcourt Credit Group, Inc. ORD
                (Acquired 2/15/96 through
                4/10/97, Cost $76,580)(2)                      $   137,484
     4,000    Rental Service Corp.(1)                               87,000
     3,500    Salomon Inc.                                         187,687
       250    Takefuji Corporation ORD                              11,683
     5,866    Travelers Group, Inc.                                321,897
    16,000    United Merchant Group ORD(1)                          25,468
                                                                ----------
                                                                 3,057,713
                                                                ----------
FOOD & BEVERAGE--1.3%
    33,350    Archer-Daniels-Midland Co.                           667,000
    50,000    Guangnan Holdings ORD                                 80,338
     7,900    Guinness plc ORD                                      73,697
     1,500    Huhtamaki Group ORD                                   65,854
     1,100    Interstate Bakeries Corp.                             59,125
     1,500    Lance, Inc.                                           29,344
       200    Michael Foods, Inc.                                    2,837
       100    Nestle S.A. ORD                                      124,558
    11,300    Northland Cranberries, Inc.                          146,194
       600    OY Hartwall AB ORD                                    27,973
    24,900    Ralcorp Holdings, Inc.(1)                            301,913
     7,200    Universal Foods Corp.                                258,300
                                                                ----------
                                                                 1,837,133
                                                                ----------
FURNITURE & FURNISHINGS--0.1%
     4,000    Miller (Herman), Inc.                                142,500
                                                                ----------
HEALTHCARE--0.9%
       400    Columbia/HCA Healthcare Corp.                         14,650
     4,000    Health Management Associates,
                Inc.(1)                                            117,000
    14,500    Humana Inc.(1)                                       328,062
     1,200    Lincare Holdings Inc.(1)                              46,725
     1,800    Oxford Health Plans, Inc.(1)                         126,563
     6,100    Quorum Health Group, Inc.(1)                         216,931
     3,500    Tenet Healthcare Corp.(1)                             96,250
     6,300    United HealthCare Corp.                              355,950
                                                                ----------
                                                                 1,302,131
                                                                ----------
INDUSTRIAL EQUIPMENT & MACHINERY--1.0%
    11,000    Ashtead Group plc ORD                                 55,907
     1,500    Caterpillar Inc.                                     146,437
    10,900    Cooper Industries, Inc.                              555,900
     1,600    Dover Corp.                                           91,600

Shares                                                                  Value
- --------------------------------------------------------------------------------

     2,100    Dresser Industries, Inc.                        $     71,925
     4,000    Ingersoll-Rand Co.                                   218,000
       100    Mannesmann AG ORD                                     40,692
     7,200    Pfeiffer Vacuum Technology
                AG ADR(1)                                          162,900
                                                                ----------
                                                                 1,343,361
                                                                ----------
INSURANCE--3.4%
     3,300    AXA-UAP ORD                                          197,919
     7,600    Allstate Corp.                                       559,550
     1,400    American International Group, Inc.                   189,525
     3,748    Assurantieconcern Stad Rotterdam
                ORD                                                168,002
       400    CIGNA Corp.                                           69,500
     5,600    CNA Financial Corp.(1)                               573,300
     6,400    Chubb Corp. (The)                                    390,400
     7,000    Companhia de Seguros Mundial
                Confianca, SA ORD(1)                                92,739
     9,800    Conseco Inc.                                         392,000
       600    Gallagher (Arthur J.) & Co.                           19,050
     1,900    General Re Corp.                                     332,975
       700    ITT Hartford Group, Inc.                              54,600
     2,100    Lincoln National Corp.                               127,837
     7,200    NAC Re Corp.                                         287,100
       100    Old Republic International Corp.                       3,012
     3,900    Pohjola Insurance Group Cl B ORD                     113,642
    21,370    Reinsurance Australia Corporation
                Ltd. ORD                                            67,476
     9,300    SAFECO Corp.                                         403,969
     1,700    Sampo Insurance Company Ltd. ORD                     148,609
     3,000    Skandia Forsakrings AB ORD                           106,015
     4,600    St. Paul Companies, Inc.                             329,475
     1,600    UNUM Corp.                                           126,600
                                                                ----------
                                                                 4,753,295
                                                                ----------
LEISURE--0.6%
     3,100    Doubletree Corp.(1)                                  139,306
     3,400    HFS, Inc.(1)                                         183,175
     5,800    Hilton Hotels Corporation                            163,850
     2,100    King World Productions, Inc.                          79,013
    11,000    Yamaha Corp. ORD                                     209,217
                                                                ----------
                                                                   774,561
                                                                ----------

See Notes to Financial Statements


Semiannual Report                            Strategic Allocation: Moderate   25


                            SCHEDULE OF INVESTMENTS
                         STRATEGIC ALLOCATION: MODERATE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

MACHINERY & EQUIPMENT--0.9%
     2,700    Applied Materials, Inc.(1)                       $   176,006
     1,300    Barmag AG ORD(1)                                     226,766
     3,000    Boewe Systec AG ORD                                  108,707
     1,200    Cymer, Inc.(1)                                        63,600
     3,500    Diebold, Inc.                                        131,250
    11,800    Intevac, Inc.(1)                                     187,325
       240    Rieter Holdings Ltd. ORD                              78,132
       300    Swisslog Holding AG ORD(1)                           106,157
       800    Thermedics Inc.(1)                                    13,400
     4,500    Veeco Instruments Inc.(1)                            186,750
                                                                ----------
                                                                 1,278,093
                                                                ----------
MEDICAL EQUIPMENT & SUPPLIES--0.7%
     3,400    Hillenbrand Industries, Inc.                         160,225
       800    Hologic, Inc.(1)                                      19,050
     2,000    Instrumentarium Group Cl A ORD                        83,920
     1,500    Physician Sales & Service, Inc.(1)                    21,562
     5,000    Sabratek Corp.(1)                                    133,437
     7,400    SeaMED Corp.(1)                                      127,650
     3,900    Spectra-Physics AB ORD                                67,020
    14,000    Terumo Corporation ORD                               246,999
       500    Thermo Electron Corp.(1)                              17,250
       900    Thermo Instrument Systems Inc.(1)                     30,825
     1,700    US Surgical Corp.                                     57,375
                                                                ----------
                                                                   965,313
                                                                ----------
METALS & MINING--0.3%
     1,100    Oregon Metallurgical Corp.(1)                         28,325
     3,700    Reynolds Metals Co.                                  251,138
     1,200    Vulcan Materials Co.                                  87,600
       900    Zeigler Coal Holding Co.                              20,925
                                                                ----------
                                                                   387,988
                                                                ----------
OFFICE EQUIPMENT & SUPPLIES--0.4%
     4,000    Canon Copyer Sales Co. ORD                            41,654
     7,400    Xerox Corp.                                          501,350
                                                                ----------
                                                                   543,004
                                                                ----------
PAPER & FOREST PRODUCTS--0.9%
     8,100    Chesapeake Corp.                                     271,350
     3,100    Rayonier, Inc.                                       132,912

Shares                                                                  Value
- --------------------------------------------------------------------------------

     6,000    Uni-Charm Corporation ORD                        $   202,418
     6,400    Union Camp Corp.                                     336,000
     8,600    Westvaco Corp.                                       268,750
                                                                ----------
                                                                 1,211,430
                                                                ----------
PERSONAL SERVICES--0.1%
     5,500    Stewart Enterprises, Inc. Cl A                       184,594
                                                                ----------
PHARMACEUTICALS--3.5%
     3,200    Abbott Laboratories                                  201,600
     3,000    Apothekers Cooperative OPG
                ORD                                                 91,473
     4,000    Bio-Technology General
                Corporation(1)                                      57,500
     2,200    Bristol-Myers Squibb Co.                             161,425
       600    Christian Hansen Holding A/S
                Cl B ORD                                            71,989
     8,600    Dura Pharmaceuticals, Inc.(1)                        343,462
     7,400    Getinge Industrier AB ORD                            134,337
     5,900    Lilly (Eli) & Co.                                    548,700
    18,400    Mallinckrodt Inc.                                    687,700
     2,000    Matsumoto Medical Instruments,
                Inc. ORD                                            79,349
     4,500    Medicis Pharmaceutical Corp.(1)                      153,281
     7,300    Merck & Co., Inc.                                    656,088
       422    Novartis AG ORD                                      574,912
     4,600    Omnicare, Inc.                                       131,675
     3,800    Pharmacia & Upjohn Inc.                              131,575
        10    Roche Holding AG ORD                                  89,030
    12,000    Sankyo Company, Ltd. ORD                             381,084
     3,000    Warner-Lambert Co.                                   302,250
     1,200    Watson Pharmaceuticals Inc.(1)                        47,175
                                                                ----------
                                                                 4,844,605
                                                                ----------
PRINTING & PUBLISHING--0.5%
     4,900    Banta Corp.                                          135,362
     5,000    McClatchy Newspapers, Inc.                           139,375
     1,200    Meredith Corp.                                        31,050
     1,700    Moore Corporation Ltd.                                37,825
     5,000    Moore Corporation Ltd. ORD                           111,825
     1,200    Tribune Co.                                           51,900
     8,500    VNU Tijdschriftengroep
                Nederland ORD                                      192,276
                                                                ----------
                                                                   699,613
                                                                ----------

See Notes to Financial Statements


26   Strategic Allocation: Moderate                 American Century Investments


                            SCHEDULE OF INVESTMENTS
                         STRATEGIC ALLOCATION: MODERATE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

RAILROADS--0.4%
    11,000    CSX Corp.                                        $   583,000
                                                                ----------
REAL ESTATE--0.1%
    37,000    Parkway Holdings Ltd. ORD                            183,642
                                                                ----------
RESTAURANTS--0.3%
     1,000    Applebee's International Inc.(1)                      24,688
     1,200    Boston Chicken, Inc.(1)                               21,675
     2,500    Logan's Roadhouse, Inc.(1)                            58,438
       300    Lone Star Steakhouse &
                Saloon, Inc.(1)                                      6,881
     3,700    PJ America, Inc.(1)                                   64,750
     4,000    PizzaExpress plc ORD                                  44,758
     5,100    Rainforest Cafe, Inc.(1)                             124,631
                                                                ----------
                                                                   345,821
                                                                ----------
RETAIL (APPAREL)--0.7%
     4,700    Fast Retailing Co. Ltd. ORD                          152,494
     4,100    Genesco Inc.(1)                                       56,375
     2,400    Gucci Group N.V.                                     167,400
     2,500    Hennes & Mauritz AB Cl B ORD                          81,724
     4,100    Hot Topic, Inc.(1)                                   118,387
     5,000    Jones Apparel Group, Inc.(1)                         234,375
     3,100    Ross Stores, Inc.                                     88,156
       800    TJX Companies, Inc. (The)                             38,400
                                                                ----------
                                                                   937,311
                                                                ----------
RETAIL (FOOD & DRUG)--1.3%
    14,200    Albertson's, Inc.                                    475,700
     3,360    Circle K Japan Co., Ltd. ORD                         179,574
    27,500    Giant Food Inc. Cl A                                 905,781
     1,918    Koninklijke Ahold NV ORD                             145,854
     2,300    Richfood Holdings, Inc.                               53,188
     1,900    Universal Corp.                                       69,113
                                                                ----------
                                                                 1,829,210
                                                                ----------
RETAIL (GENERAL MERCHANDISE)--1.4%
     2,900    Consolidated Stores Corp.(1)                         110,925
    20,000    Dillard Department Stores, Inc. Cl A                 675,000
     4,700    Family Dollar Stores, Inc.                           121,025
       100    Fingerhut Companies, Inc.                              1,763

Shares                                                                  Value
- --------------------------------------------------------------------------------

     4,000    Grupo Elektra, S.A. de C.V. GDR                  $    76,000
     4,300    Kohl's Corp.(1)                                      231,662
       900    Lands' End, Inc.(1)                                   27,112
    10,800    Next Plc ORD                                         131,294
    10,400    Penney (J.C.) Company, Inc.                          535,600
       200    Pinault-Printemps-Redoute SA ORD                      84,018
                                                                ----------
                                                                 1,994,399
                                                                ----------
RETAIL (SPECIALTY)--0.5%
     7,800    Action Performance Cos. Inc.(1)                      187,688
     2,500    Cortefiel, S.A. ORD                                   92,452
     6,800    DeoDeo Corporation ORD                               143,380
     3,600    Home Depot, Inc.                                     226,800
                                                                ----------
                                                                   650,320
                                                                ----------
RUBBER & PLASTICS(3)
       400    Carlisle Companies, Inc.                              12,200
                                                                ----------
STEEL--0.1%
       500    Intermet Corp.                                         6,875
     2,500    USX-Marathon Group                                    74,375
                                                                ----------
                                                                    81,250
                                                                ----------
TEXTILES & APPAREL--0.4%
     4,300    Dexter Corp.                                         129,537
       900    Nautica Enterprises, Inc.(1)                          21,206
       800    NIKE, Inc.                                            45,600
       400    Russell Corp.                                         12,250
     3,300    Sport-Haley, Inc.(1)                                  62,287
     1,700    Timberland Co. (The)(1)                               99,663
     6,900    Wolverine World Wide, Inc.                           178,537
                                                                ----------
                                                                   549,080
                                                                ----------
TOBACCO--0.4%
     2,700    Consolidated Cigar Holdings, Inc.(1)                  81,675
     1,800    Fortune Brands Pty. Ltd.(1)                           88,200
     2,900    General Cigar Holdings, Inc.(1)                       85,550
     5,700    Philip Morris Companies Inc.                         250,800
     2,600    RJR Nabisco, Inc.                                     84,175
                                                                ----------
                                                                   590,400
                                                                ----------

See Notes to Financial Statements


Semiannual Report                            Strategic Allocation: Moderate   27


                            SCHEDULE OF INVESTMENTS
                         STRATEGIC ALLOCATION: MODERATE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

TRANSPORTATION--0.6%
     5,800    Allied Holdings, Inc.(1)                      $       57,275
     6,150    Internatio-Muller NV ORD                             198,097
   120,000    International Container Terminal
                Services, Inc. ORD(1)                               64,834
     2,575    Koninklijke Pakhoed NV ORD                            87,238
     2,500    Koninklijke Van Ommeren N.V.
                ORD                                                101,506
    14,028    Stagecoach Holdings plc ORD                          153,863
     3,000    XTRA Corp.                                           128,625
                                                                ----------
                                                                   791,438
                                                                ----------
UTILITIES--2.8%
     2,600    Commonwealth Energy System                            56,550
       500    Compagnie Generale des Eaux
                ORD(1)                                              61,624
       600    Entergy Corp.                                         15,825
    24,500    Florida Progress Corp.                               719,687
     1,100    General Public Utilities Corp.                        38,500
     7,200    Houston Industries Inc.                              149,400
    25,000    New York State Electric & Gas Corp.                  543,750
    11,100    Potomac Electric Power                               255,300
    12,600    Public Service Enterprise Group Inc.                 311,850
    15,700    Texas Utilities Electric Co.                         539,688
    14,000    Union Electric Co.                                   512,750
    24,300    Wisconsin Energy Corp.                               586,238
                                                                ----------
                                                                 3,791,162
                                                                ----------
TOTAL COMMON STOCKS--58.1%                                      80,018,775
                                                                ----------
   (Cost $70,849,410)

PREFERRED STOCKS
BANKING--0.1%
       100    Liechtenstein Global Trust AG ORD                     57,891
                                                                ----------
CHEMICALS & RESINS--0.1%
     3,140    Henkel KGaA ORD                                      177,482
                                                                ----------
COMMUNICATIONS SERVICES--0.2%
     1,700    Telecomunicacoes Brasileiras
                S.A. ADR                                           233,538
                                                                ----------

Shares/Principal Amount                                                 Value
- --------------------------------------------------------------------------------

FINANCIAL SERVICES--0.2%
     1,340    Marschollek, Lautenschlaeger und
                Partner AG ORD                               $     322,134
                                                                ----------
MEDICAL EQUIPMENT & SUPPLIES--0.1%
       777    Fresenius AG ORD                                     172,076
                                                                ----------
TOTAL PREFERRED STOCKS--0.7%                                       963,121
                                                                ----------
   (Cost $663,445)

U.S. TREASURY SECURITIES
$2,250,000    U.S. Treasury Notes, 5.00%,
                2/15/99                                          2,209,230
 3,275,000    U.S. Treasury Notes, 6.625%,
                7/31/01                                          3,292,390
 4,600,000    U.S. Treasury Notes, 7.50%,
                5/15/02                                          4,792,648
 3,875,000    U.S. Treasury Notes, 5.75%,
                8/15/03                                          3,716,358
   100,000    U.S. Treasury Notes, 5.875%,
                11/15/05                                            94,875
 2,075,000    U.S. Treasury Bonds, 7.25%,
                5/15/16                                          2,134,013
                                                                ----------
TOTAL U.S. TREASURY SECURITIES--11.8%                           16,239,514
                                                                ----------
   (Cost $16,219,755)

MORTGAGE-BACKED SECURITIES(4)
   121,661    FHLMC Gold Pool #C00465,
                8.00%, 6/1/26                                      124,158
   459,321    FHLMC Gold Pool #D72306,
                8.00%, 6/1/26                                      468,746
   177,119    FHLMC Gold Pool #D72431,
                8.00%, 6/1/26                                      180,753
   382,351    FHLMC Gold Pool #D72499,
                8.00%, 7/1/26                                      390,196
   964,268    FNMA Pool #373899, 6.50%,
                3/1/12                                             941,790
   201,272    FNMA Pool #125477, 6.50%,
                4/1/12                                             196,581
   956,024    FNMA Pool #369085, 6.50%,
                4/1/12                                             933,739
    65,371    FNMA Pool #377181, 6.50%,
                4/1/12                                              63,847

See Notes to Financial Statements


28   Strategic Allocation: Moderate                 American Century Investments


                            SCHEDULE OF INVESTMENTS
                         STRATEGIC ALLOCATION: MODERATE

MAY 31, 1997 (UNAUDITED)

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

$  996,592    FNMA Pool #377379, 6.50%,
                4/1/12                                         $   973,361
   244,655    FNMA Pool #341078, 7.00%,
                5/1/26                                             238,460
   391,132    FNMA Pool #250576, 7.00%,
                6/1/26                                             381,229
 1,003,167    FNMA Pool #373510, 7.50%,
                3/1/27                                           1,000,559
   541,395    GNMA Pool #397233, 9.50%,
                2/20/25                                            577,295
   440,420    GNMA Pool #392995, 8.75%,
                3/15/25                                            460,023
   371,292    GNMA Pool #001991, 9.00%,
                4/20/25                                            387,752
   287,337    GNMA Pool #416856, 7.50%,
                10/15/25                                           286,960
   181,505    GNMA Pool #421254, 7.50%,
                11/15/25                                           181,268
   341,887    GNMA Pool #416761, 7.50%,
                6/15/26                                            340,943
                                                                ----------
TOTAL MORTGAGE-BACKED SECURITIES--5.9%                           8,127,660
                                                                ----------
   (Cost $8,073,821)

CORPORATE BONDS
AEROSPACE & DEFENSE--0.4%
   400,000    Lockheed Martin Corp., 6.85%,
                5/15/01                                            400,000
   200,000    Lockheed Martin Corp., 7.25%,
                5/15/06                                            200,750
                                                                ----------
                                                                   600,750
                                                                ----------
BANKING--1.1%
   400,000    Citicorp, 7.125%, 5/15/06                            397,000
   650,000    First Bank System Inc., 7.625%,
                5/1/05                                             666,250
   400,000    Santander Financial Issuances Ltd.,
                7.00%, 4/1/06                                      393,000
                                                                ----------
                                                                 1,456,250
                                                                ----------
COMMUNICATIONS SERVICES--0.3%
   250,000    360 Communications Co., 7.125%,
                3/1/03                                             248,125
   100,000    Tele-Communications Inc., 8.25%,
                1/15/03                                            101,875
                                                                ----------
                                                                   350,000
                                                                ----------

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

ENERGY (PRODUCTION & MARKETING)--0.7%
$  750,000    Oryx Energy Co., 8.375%,
                7/15/04                                        $   782,813
   200,000    Triton Energy Ltd., 8.75%,
                4/15/02                                            202,000
                                                                ----------
                                                                   984,813
                                                                ----------
FINANCIAL SERVICES--0.8%
   400,000    Ford Motor Credit Co., 6.125%,
                1/9/06                                             371,500
   200,000    Merrill Lynch & Co. Inc., 8.00%,
                2/1/02                                             208,500
   500,000    Wharf International Finance Ltd.,
                7.625%, 3/13/07 (Acquired
                3/6/97, Cost $496,045)(2)                          493,750
                                                                ----------
                                                                 1,073,750
                                                                ----------
FOOD & BEVERAGE--0.1%
   125,000    RJR Nabisco Holdings Corp.,
                8.75%, 4/15/04                                     126,406
                                                                ----------
INSURANCE--0.3%
   400,000    Aetna Inc., 6.75%, 8/15/01                           399,000
                                                                ----------
LEISURE--0.1%
   100,000    Paramount Communications, Inc.,
                7.50%, 1/15/02                                      99,750
   100,000    Time Warner Inc., 8.11%, 8/15/06                     102,500
                                                                ----------
                                                                   202,250
                                                                ----------
METALS & MINING--0.1%
   100,000    Alcan Aluminium Ltd., 5.875%,
                4/1/00                                              98,125
                                                                ----------
PAPER & FOREST PRODUCTS--0.1%
   150,000    Domtar, Inc. 8.75%, 8/1/06                           150,750
                                                                ----------
REAL ESTATE--0.2%
   300,000    Spieker Properties, Inc., 6.80%,
                12/15/01                                           297,375
                                                                ----------
RETAIL (GENERAL MERCHANDISE)--0.1%
   150,000    Federated Department Stores,
                8.50%, 6/15/03                                     159,187
                                                                ----------
TOBACCO--0.3%
   450,000    Philip Morris Companies Inc.,
                6.80%, 12/1/03                                     439,875
                                                                ----------

See Notes to Financial Statements


Semiannual Report                            Strategic Allocation: Moderate   29


                            SCHEDULE OF INVESTMENTS
                         STRATEGIC ALLOCATION: MODERATE

MAY 31, 1997 (UNAUDITED)

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

UTILITIES--0.3%
$  400,000    Pacific Gas and Electric Company,
                6.25%, 3/1/04                                $     384,500
                                                                ----------
TOTAL CORPORATE BONDS--4.9%                                      6,723,031
                                                                ----------
   (Cost $6,665,864)

SOVEREIGN GOVERNMENTS & AGENCIES
DEM2,700,000 Bundesobligation, 5.875%,
               5/15/00                                           1,658,786
DEM4,400,000 Federal Republic of Germany,
               6.00%, 9/15/03                                    2,682,310
CAD1,300,000 Government of Canada, 7.25%,
               6/1/03                                              999,343
FRF4,000,000 Government of France, 8.50%,
               4/25/03                                             812,054
ITL1,200,000,000 Government of Italy, 9.50%,
               2/1/01                                              769,503
ESP40,000,000  Government of Spain,
               10.50%, 10/30/03                                    338,837
ITL270,000,000  Republic of Italy, 3.50%,
               6/20/01                                           2,464,553
GBP650,000 United Kingdom Treasury,
               8.00%, 6/10/03                                    1,109,634
                                                                ----------
TOTAL SOVEREIGN
GOVERNMENTS & AGENCIES--7.9%                                    10,835,020
                                                                ----------
   (Cost $11,086,714)

COMMERCIAL PAPER(5)
BANKING--5.4%
 6,500,000    Nordbanken North America,
                5.45%, 7/18/97                                   6,452,817
 1,000,000    Spintab-Swedmortgage AB, 5.39%,
                6/30/97                                            995,449
                                                                ----------
                                                                 7,448,266
                                                                ----------
FINANCIAL SERVICES--2.5%
 3,500,000    Hitachi Credit America Corp.,
                5.39%-5.45%, 6/12/97
                through 7/17/97                                  3,482,804
                                                                ----------
INSURANCE--2.0%
 2,735,000    Principal Mutual, 5.51%, 6/5/97                    2,733,320
                                                                ----------
TOTAL COMMERCIAL PAPER--9.9%                                    13,664,390
                                                                ----------
   (Cost $13,664,390)

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

TEMPORARY CASH INVESTMENTS--0.8%
   Repurchase Agreement, Morgan (J.P.) & Co.
      Inc., (U.S. Treasury obligations), in a joint
      trading account at 5.50%, dated 5/30/97,
      due 6/2/97 (Delivery value $1,100,504)                 $   1,100,000
                                                                ----------
   (Cost $1,100,000)
 TOTAL INVESTMENT SECURITIES--100.0%                         $ 137,671,511
                                                                ========== 
   (Cost $128,323,399)

FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS
     Contracts        Settlement                         Unrealized
to Sell         Date     Value            Loss
      578,327   CHF     6/30/97       $   410,741        $  (18,116)
     3,202,860  DEM     6/30/97         1,881,523           (35,510)
    2,489,515   FRF     6/30/97           432,868            (7,356)
      390,488   GBP     6/30/97           639,838            (6,407)
     1,247,648  NLG     6/30/97           651,442            (9,776)
                                      ------------------------------
                                      $ 4,016,412        $  (77,165)
                                      ==============================
(Value on Settlement Date $3,939,247)

See Notes to Financial Statements


30   Strategic Allocation: Moderate                 American Century Investments


                            SCHEDULE OF INVESTMENTS
                         STRATEGIC ALLOCATION: MODERATE

Notes to  Schedule  of  Investments  
ADR = American Depositary Receipt 
CAD = Canadian Dollar 
CHF = Swiss Franc 
DEM = German Mark 
ESP = Spanish Peseta
FHLMC = Federal Home Loan Mortgage Corporation 
FNMA = Federal National Mortgage Association 
FRF = French Franc 
GBP = British Pound 
GDR = Global Depositary Receipt 
GNMA = Government National Mortgage Association 
ITL = Italian Lira 
JPY = Japanese Yen 
NLG = Netherlands Guilder 
ORD = Foreign Ordinary Share 
(1) Non-income producing. 
(2) Security was purchased under Rule 144A of the Securities  Act of 1933 and,  
unless registered under the Act or exempted from registration, may only be sold 
to qualified institutional investors. The aggregate value of restricted 
securities at May 31, 1997, was $631,234, which represented 0.5% of net assets. 
(3) Industry is less than 0.05% of the Fund's total investment securities. 
(4) Final maturity indicated. Expected remaining maturity used for purposes of 
calculating the weighted average portfolio maturity.  
(5) The rates for commercial paper are the yield to maturity at May 31, 1997.

See Notes to Financial Statements


Semiannual Report                            Strategic Allocation: Moderate   31

<TABLE>
<CAPTION>
                        STRATEGIC ALLOCATION: AGGRESSIVE

TOTAL RETURNS AS OF MAY 31, 1997
                                                                                        AVERAGE ANNUAL RETURNS
                                                                        6 MONTHS        1 YEAR     LIFE OF FUND
INVESTOR CLASS (inception 2/15/96)
<S>                                                                        <C>          <C>            <C>   
Strategic Allocation: Aggressive ......................................    4.55%        10.55%         11.97%
S&P 500 ...............................................................   13.17%        29.48%         25.38%
Lehman Aggregate Bond Index ...........................................    0.94%         8.32%          5.36%(1)
Three-Month U.S. Treasury Bill ........................................    2.56%         5.17%          5.15%(1)
Average Growth & Income Fund(2) .......................................   10.15%        20.84%         20.99%
Fund's Ranking Among Growth & Income Funds(2) .........................    --       521 out of 548 505 out of 521

ADVISOR CLASS (inception 10/2/96)
Strategic Allocation: Aggressive ......................................    4.51%          --            7.62%
S&P 500 ...............................................................   13.17%          --           23.44%
Lehman Aggregate Bond Index ...........................................    0.94%          --            4.94%
Three-Month U.S. Treasury Bill ........................................    2.56%          --            3.41%

(1)  Since  2/29/96,  the date closest to the fund's  inception  for which index
     return data are available.

(2)  According to Lipper Analytical Services.
</TABLE>

See pages 57, 60 and 61 for more information about returns,  share classes,  the
comparative indices and Lipper fund rankings.

<TABLE>
[line graph - data below]

GROWTH OF $10,000 OVER THE LIFE OF THE FUND
Value on 5/31/97

$10,000 investment made 2/29/96

            Strategic: Aggressive        S&P 500     Lehman Aggregate Bond Index   3-Month T-Bill Index
<S>              <C>                   <C>                   <C>                        <C>    
2/29/96           $10,000               $10,000               $10,000                    $10,000
3/31/96           $10,101               $10,133                $9,930                    $10,041
4/30/96           $10,423               $10,269                $9,875                    $10,082
5/31/96           $10,544               $10,504                $9,855                    $10,125
6/30/96           $10,524               $10,586                $9,987                    $10,167
7/31/96           $10,081               $10,102               $10,014                    $10,211
8/30/96           $10,323               $10,292                $9,997                    $10,254
9/30/96           $10,766               $10,911               $10,172                    $10,297
10/31/96          $10,847               $11,197               $10,397                    $10,339
11/30/96          $11,149               $12,018               $10,575                    $10,382
12/31/96          $11,068               $11,822               $10,477                    $10,425
1/31/97           $11,352               $12,544               $10,509                    $10,469
2/28/97           $11,190               $12,619               $10,535                    $10,513
3/31/97           $10,804               $12,141               $10,418                    $10,558
4/30/97           $11,007               $12,847               $10,574                    $10,603
5/31/97           $11,657               $13,600               $10,674                    $10,648

Past  performance  does not  guarantee  future  results.  Investment  return and
principal  value will fluctuate,  and redemption  value may be more or less than
original  cost.  Data quoted is for Investor Class only;  performance  for other
classes will vary due to differences  in fee  structures  (see the Total Returns
table  above).  The graph  begins on  2/29/96,  the date  closest  to the fund's
2/15/96 inception date for which index return data are available.

The line representing the fund's total return includes  operating expenses (such
as transaction  costs and management fees) that reduce returns,  while the total
return lines of the indices do not.
</TABLE>

[pie chart]

ASSET ALLOCATION AS OF MAY 31, 1997
Percent of Fund Investments
U.S. Stocks 54%
Foreign Stocks 19%
U.S. Bonds 13%
Foreign Bonds 8%
Money Market
Securities 6%

See page 60 for the fund's neutral asset mix.


32   Strategic Allocation: Aggressive               American Century Investments


                        STRATEGIC ALLOCATION: AGGRESSIVE

Management Q & A

An interview with Jeff Tyler and Brian Howell,  lead  portfolio  managers on the
American Century Strategic Asset Allocation funds management team.

How did the fund perform?

For the six-month  period ended May 31, 1997,  the fund's  Investor Class shares
posted a total return of 4.55%,  compared with the 10.15%  average return of the
621 "Growth & Income  Funds"  tracked by Lipper  Analytical  Services.  (See the
Total  Returns   table  on  the  previous   page  for  other  fund   performance
comparisons.)

Why did the fund underperform its Lipper category average?

As we've mentioned  before,  the funds in this category are typically  large-cap
U.S.  stock  funds,  whereas  Strategic  Allocation:   Aggressive  is  an  asset
allocation fund that invests in foreign stocks, bonds and cash. In addition, the
fund's U.S. stock  holdings tend to be primarily  small-cap,  aggressive  growth
stocks.  Lipper Analytical Services felt that the "Growth & Income" category was
the best place for the fund, but we think it's an apples-and-oranges comparison.

How did the fund's asset mix change over the past six months?

We  maintained  a mostly  neutral  position for the fund.  The only  significant
adjustment we made to the fund's asset mix was to  underweight  U.S.  stocks and
overweight foreign stocks.  Increased volatility in the U.S. stock market led us
to look abroad, where stock returns were beginning to reflect improving economic
conditions.

In particular,  we emphasized  European stocks (see the chart on the next page),
which  provided  the best equity  returns of any region in the world  during the
period.

But weren't those returns reduced by the stronger U.S. dollar?

That's true, but even after you account for the currency losses,  European stock
returns  were still on par with U.S.  stock  returns and better than  returns in
other  regions of the world.  In  addition,  we  mitigated  some of the currency
losses by hedging a portion of the fund's foreign  investments  against European
currencies.

What is currency hedging?

It's a strategy designed to reduce or eliminate the negative effects of currency
fluctuations on foreign  investment  returns.  When the U.S. dollar  strengthens
against  foreign  currencies,  gains earned on investments  denominated in those
currencies  translate  into fewer  dollars;  hedging is intended to offset these
currency losses.

For the fund,  currency hedges typically involve forward currency contracts that
allow the fund to lock in a specific  exchange rate.  This approach  removes the
effect of  currency  exchange  rates and  creates a "pure  play" on the  foreign
securities.

Did you hedge all of the fund's European investments?

No. Although the fund can hedge as much as 100% of its foreign  assets,  we only
hedged  about 35% of the fund's  European  holdings.  We felt this was a prudent
amount that would help  mitigate  currency  losses  while  retaining  the fund's
exposure to non-dollar-denominated investments.

We also hedged a portion of the fund's Japanese holdings early in the period. We
removed the hedge in April, when the dollar reached a four-year high against the
Japanese yen and Japanese finance ministry  officials  publicly  expressed their
desire for a weaker dollar.


Semiannual Report                          Strategic Allocation: Aggressive   33


                        STRATEGIC ALLOCATION: AGGRESSIVE

What are your plans for the fund's asset allocation structure going forward?

We will  likely  continue  its current  positioning--neutral  in bonds and cash,
underweighted in U.S. stocks and overweighted in foreign stocks.  We still think
the most attractive  opportunities are in the stock markets of Europe,  where we
see parallels with the U.S. in the early 1990s.

Coming out of a recession,  U.S. corporations used technological  innovation and
downsizing  to cut costs,  improve  efficiency  and  increase  productivity.  In
addition,  the rise of temporary employment services and outsourcing changed the
nature of the U.S. labor market and lowered the unemployment rate.

Much of Europe is now in the same  situation--a  weak economic  environment  and
high levels of unemployment  are leading to changing labor markets and corporate
restructuring.  We expect  these  changes to boost  corporate  profits in Europe
going forward.

What about the U.S. stock market?

We continue to marvel at the  resiliency  of the U.S.  stock  market.  We've had
reservations  about the market's  stretched  valuations for some time, but stock
prices have  continued  to climb.  Despite our  concerns,  we followed our asset
allocation  model, and the fund's weighting in domestic stocks did not stray too
far from neutral.

FUND'S U.S. STOCKS AS OF MAY 31, 1997
Number of Companies        310
Dividend Yield             1.49%
Price/Earnings Ratio       27.7

                               % of Fund's    % of
                               U.S. Stocks    Fund

Top 5 U.S. Stocks
Merck & Co., Inc.                 1.5%        0.8%
Allstate Corp.                    1.4%        0.7%
Intel Corp.                       1.3%        0.7%
Tellabs, Inc.                     1.3%        0.7%
IBM Corp.                         1.3%        0.7%

FUND'S FOREIGN STOCKS AS OF MAY 31, 1997
Number of Companies        167
Dividend Yield             1.36%


                                     % of Fund's    % of
                         Country   Foreign Stocks   Fund

Top 5 Foreign Stocks
Novartis AG            Switzerland      2.5%        0.5%
Daimler-Benz AG          Germany        2.1%        0.4%
Marschollek,
   Lautenschlaeger und
   Partner AG            Germany        2.0%        0.4%
Credit Suisse Group    Switzerland      1.9%        0.4%
Volkswagen AG            Germany        1.9%        0.4%

[pie chart]

Percent of Fund's Foreign Stocks
Europe 86%
Asia/Pacific 6%
Americas
(excluding U.S.) 8%


34   Strategic Allocation: Aggressive               American Century Investments


                        STRATEGIC ALLOCATION: AGGRESSIVE

The  danger  to U.S.  stocks in the  second  half of 1997 is  stronger  economic
growth, which would likely result in rising inflation and higher interest rates.
Higher rates could squeeze  corporate  earnings,  and weaker earnings growth has
been  responsible  for much of the  punishment  and volatility in the U.S. stock
market recently.

We plan to  maintain a slightly  underweighted  position  in U.S.  stocks  going
forward. We've also made some adjustments to our investment approach to give the
fund's domestic stock allotment more diversity.

Can you elaborate on these adjustments?

The fund's U.S. stock holdings  represent a combination of aggressive growth and
value stocks,  with an emphasis on aggressive growth.  However,  we are adding a
quantitative equity component to complement the other two investment styles.

Our quantitative  approach  employs a highly  structured model that ranks stocks
based on a variety of performance and risk-related  criteria.  The ultimate goal
is to produce a group of stocks that balance high return potential with the risk
characteristics of the S&P 500.

We believe that combining this quantitative  strategy with our aggressive growth
and value  approaches  will provide  greater balance and diversity to the fund's
U.S. stock holdings.

What's your outlook for bonds?

We  feel  that   interest   rates  have  bottomed   worldwide,   and  we  expect
stable-to-rising  interest rates going forward.  The Federal Reserve has already
raised rates in the U.S., and economic growth is likely to pick up in Europe and
Japan by the end of the year.

As a result,  our outlook is neutral to somewhat  negative for bonds, and we may
look to reduce the fund's  bond  position  later this year.  We could see fairly
flat bond performance worldwide over the next six months, much like the past six
months.

Nonetheless, the fund may be able to take advantage of opportunities in emerging
market  debt.  We believe  that Latin  America is one of the few  regions in the
world with a legitimate reason for declining interest rates. For example, Brazil
is  the  only  country  in  the  world  that  has  single-digit   inflation  and
double-digit  real  interest  rates.  We'll  be  looking  to Latin  America  for
attractive bond valuations.

[pie charts]

FUND'S U.S. BONDS AS OF MAY 31, 1997
Number of Securities       33
Weighted Average Maturity  11.23 years
Average Duration           4.51 years

Percent of Fund's U.S. Bonds
U.S. Treasury Notes 40%
Corporate Bonds 39%
Mortgage-Backed
Securities 19%
U.S. Treasury Bonds 2%


FUND'S FOREIGN BONDS AS OF MAY 31, 1997 
Number of Securities 14 
Weighted Average Maturity 4.94 years 
Average Duration 4.26 years

Percent of Fund's Foreign Bonds
Europe 62%
Americas
(excluding U.S.) 38%


Semiannual Report                          Strategic Allocation: Aggressive   35


                            SCHEDULE OF INVESTMENTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

COMMON STOCKS & WARRANTS
AEROSPACE & DEFENSE--1.7%
       800    Boeing Co.                                      $      84,200
     7,900    Bombardier Inc. ORD                                   166,358
    13,400    British Aerospace plc ORD                             272,969
     2,000    Cobham PLC ORD                                         21,477
       400    Falck A/S ORD                                         109,617
       900    General Dynamics Corp.                                 67,387
     6,400    Litton Industries, Inc.(1)                            289,600
     1,600    Lockheed Martin Corp.                                 149,800
     3,900    Raytheon Co.                                          186,225
     4,700    SIFCO Industries, Inc.                                 68,150
     4,900    Triumph Group, Inc.(1)                                125,563
                                                                 ----------
                                                                  1,541,346
                                                                 ----------
AIRLINES--0.2%
     1,200    AMR Corp.(1)                                          119,250
       800    Delta Air Lines Inc.                                   75,000
                                                                 ----------
                                                                    194,250
                                                                 ----------
AUTOMOBILES & AUTO PARTS--2.2%
       225    Beyerische Motoren Werke
                (BMW) AG ORD                                        184,565
     4,000    Bridgestone Corp. ORD                                  90,537
     3,300    Cooper Tire and Rubber Company                         73,837
     4,800    Daimler-Benz AG ORD                                   370,097
       700    Excel Industries, Inc.                                 12,688
     4,400    Ford Motor Co.                                        165,000
     2,100    General Motors Corp.                                  120,225
     4,000    Goode Durrant plc ORD                                  29,741
       700    ITT Industries, Inc.                                   17,325
       800    Kiekert AG ORD(1)                                      34,664
     7,000    MBM Resources Berhad ORD                               16,295
     1,300    Magna International Inc. Cl A                          69,875
       100    Porsche AG ORD                                        120,786
    14,000    Sanden Corp. ORD                                      115,547
     6,100    Superior Industries International, Inc.               155,550
     3,300    Tower Automotive, Inc.(1)                             130,762
       500    Volkswagen AG ORD                                     323,659
                                                                 ----------
                                                                  2,031,153
                                                                 ----------

Shares                                                                  Value
- --------------------------------------------------------------------------------

BANKING--4.3%
     2,200    Banc One Corp.                                   $     95,150
     4,000    Bank of Nova Scotia ORD                               166,285
       900    BankAmerica Corp.                                     105,187
       700    Bankers Trust New York Corp.                           59,238
     2,800    Banque Nationale de Paris ORD(1)                      115,146
     3,600    Chase Manhattan Corp.                                 340,200
     2,700    Citicorp                                              308,812
    17,900    Credito Italiano ORD                                   26,692
     2,500    Deutsche Pfandbrief-und
                Hypothekenbank AG ORD                               147,318
     1,800    First Chicago NBD Corp.                               106,650
     3,500    First Union Corp.                                     300,562
     6,900    First Virginia Banks, Inc.                            386,400
     9,641    HSBC Holdings plc ORD                                 292,397
     6,200    Mercantile Bancorporation Inc.                        365,800
     1,700    Morgan (J.P.) & Co.                                   182,750
     2,400    Nordlandsbanken ORD                                    57,625
     2,900    Norwest Corp.                                         155,150
     5,300    PNC Bank Corp.                                        221,938
    37,500    PT Bank Bira ORD                                       57,402
    11,562    Royal Bank of Scotland Group
                plc ORD                                             113,735
     5,492    Security Bank Corp. ORD(1)                              8,537
       700    Societe Generale ORD                                   77,890
       100    Unionbancal Corp.                                       6,625
     3,100    Wachovia Corp.                                        188,713
                                                                 ----------
                                                                  3,886,202
                                                                 ----------
BIOTECHNOLOGY--1.8%
       700    Agouron Pharmaceuticals, Inc.(1)                       56,131
     5,300    Amgen Inc.                                            354,769
     4,116    Biocompatibles International plc
                ORD(1)                                               87,726
     7,200    Centocor, Inc.(1)                                     252,900
       700    Incyte Pharmaceuticals, Inc.(1)                        45,675
     5,500    PAREXEL International Corp.(1)                        179,781
     2,800    PathoGenesis Corp.(1)                                  76,825
     4,300    QIAGEN N.V.(1)                                        166,625
     8,200    QLT PhotoTherapeutics, Inc. ORD(1)                    184,584
     2,300    Quintiles Transnational Corp.(1)                      143,750
     1,000    Sangstat Medical Corp.(1)                              24,813
       900    Vertex Pharmaceuticals, Inc.(1)                        36,225
                                                                 ----------
                                                                  1,609,804
                                                                 ----------

See Notes to Financial Statements


36   Strategic Allocation: Aggressive               American Century Investments


                            SCHEDULE OF INVESTMENTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

BROADCASTING & MEDIA--0.2%
       200    Central European Media
                Enterprises Ltd. Cl A(1)                       $      4,650
       784    Havas Advertising SA ORD                               83,290
     1,000    Nippon Broadcasting System ORD                         92,087
                                                                 ----------
                                                                    180,027
                                                                 ----------
BUILDING & HOME IMPROVEMENTS--0.3%
     4,500    American Woodmark Corp.                                73,406
       600    Hunter Douglas N.V. ORD                                53,007
     6,700    Johns Manville Corp.                                   76,213
     1,600    Lafarge Corp.                                          39,600
     1,300    Royal Group Technologies Ltd.
                ORD(1)                                               31,812
     1,300    Triangle Pacific Corp.(1)                              38,594
                                                                 ----------
                                                                    312,632
                                                                 ----------
BUSINESS SERVICES & SUPPLIES--2.0%
     6,200    AccuStaff, Inc.(1)                                    148,800
       100    Altran Technologies SA ORD                             32,114
    25,500    Capita Group Plc ORD                                  104,518
    30,000    Corporate Services Group plc ORD                       89,271
     5,800    Corrections Corp. of America(1)                       210,250
     2,800    Esselte AB Cl B ORD                                    66,206
     5,000    F.Y.I. Inc.(1)                                        108,750
       192    GZI Transport Ltd. Warrants ORD
                (Expiration date 1/29/99)(1)                             29
       400    Goudsmit NV ORD                                        54,623
     1,400    Kvaerner ASA ORD                                       80,203
     1,975    Larsen & Toubro Ltd.
                (Acquired 8/1/96 through
                8/28/96, Cost $32,228)(1)(2)                         26,119
     4,300    Lason, Inc.(1)                                         93,794
    13,000    M.A.I.D. plc ORD(1)                                    39,750
     4,600    Market Facts, Inc.                                     55,488
     4,100    NCO Group, Inc.(1)                                    136,581
     1,200    Omnicom Group Inc.                                     69,600
     9,000    Parity plc ORD                                         82,631
     1,200    Randstad Holdings N.V. ORD                            120,713
     4,700    Stork N.V. ORD                                        208,225
       600    VA Technologie AG ORD                                 106,039
                                                                 ----------
                                                                  1,833,704
                                                                 ----------

Shares                                                                  Value
- --------------------------------------------------------------------------------

CHEMICALS & RESINS--1.5%
       480    Akzo Nobel ORD                                    $    63,972
     1,700    Dow Chemical Co.                                      141,738
     7,500    Great Lakes Chemical Corp.                            366,562
     1,282    Henkel KGaA ORD                                        67,201
     6,500    Lubrizol Corp.                                        231,562
    16,000    Millennium Chemicals Inc.                             308,000
     4,100    Nalco Chemical Co.                                    152,212
                                                                 ----------
                                                                  1,331,247
                                                                 ----------
COMMUNICATIONS EQUIPMENT--2.4%
     6,400    ADC Telecommunications, Inc.(1)                       219,600
     2,200    Allen Group Inc. (The)(1)                              51,150
       100    Ascend Communications, Inc.(1)                          5,581
     3,900    Boston Technology, Inc.(1)                            112,125
     2,200    Comverse Technology, Inc.(1)                          100,375
     1,300    Ericsson (L.M.) Telephone Co.
                ADR                                                  46,394
   938,800    Ericsson Telecomunicacoes S/A
                ORD                                                  52,618
     5,100    Lucent Technologies Inc.                              324,487
     1,500    Motorola, Inc.                                         99,562
     2,000    Natural MicroSystems Corp.(1)                          49,125
     1,500    Nokia Corp. Cl A ADR                                   99,000
       700    Northern Telecom Ltd. ORD(1)                           58,734
     3,000    Orckit Communications Ltd.(1)                          40,125
     7,700    PairGain Technologies, Inc.(1)                        161,219
     2,200    SeaChange International, Inc.(1)                       47,988
     9,800    Tandberg Television ASA ORD(1)                         89,442
    12,800    Tellabs, Inc.(1)                                      644,000
                                                                 ----------
                                                                  2,201,525
                                                                 ----------
COMMUNICATIONS SERVICES--2.4%
     2,000    AT&T Corp.                                             73,750
     1,000    Alcatel Alsthom Compagnie
                Generale ORD(1)                                     108,494
     2,100    Ameritech Corp.                                       137,550
     1,000    Bell Atlantic Corp.                                    70,000
     2,400    BellSouth Corp.                                       108,900
    14,000    Datacraft Asia Limited ORD                             42,560
    13,200    Frontier Corp.                                        242,550
    22,400    Hong Kong Telecommunications
                Ltd. ORD                                             49,579

See Notes to Financial Statements


Semiannual Report                          Strategic Allocation: Aggressive   37


                            SCHEDULE OF INVESTMENTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

        22    Nippon Telegraph & Telephone
                ORD                                             $   210,164
     5,300    SBC Communications Inc.                               310,050
     1,800    Telecom Argentina STET - France
                Telecom S.A. ADR                                     96,075
     6,400    Telefonica de Espana ORD                              184,820
    16,900    Worldcom Inc.(1)                                      501,719
                                                                 ----------
                                                                  2,136,211
                                                                 ----------
COMPUTER PERIPHERALS--0.7%
       600    Adaptec, Inc.(1)                                       22,087
     1,600    Cisco Systems Inc.(1)                                 108,100
     9,000    EMC Corp. (Mass.)(1)                                  358,875
     4,100    Quantum Corp.(1)                                      159,644
                                                                 ----------
                                                                    648,706
                                                                 ----------
COMPUTER SOFTWARE & SERVICES--2.5%
     1,000    Adobe Systems Inc.                                     44,781
     2,700    Azlan Group plc ORD                                    26,671
     1,300    Cadence Design Systems, Inc.(1)                        43,225
     2,200    Getronics NV ORD                                       75,107
     4,500    HBO & Co.                                             288,844
     4,900    JBA Holdings Plc ORD                                   76,319
     2,100    JDA Software Group, Inc.(1)                            57,881
     2,600    Konami Co., Ltd. ORD                                   92,861
     5,000    McAfee Associates, Inc.(1)                            329,062
       100    Medic Computer Systems, Inc.(1)                         1,731
     3,200    Microsoft Corp.(1)                                    397,000
    10,329    Misys plc ORD                                         230,731
     3,300    Oracle Systems Corp.(1)                               154,069
     1,144    Ordina Beheer N.V. ORD(1)                              85,982
     8,200    Sage Group plc (The) ORD                               87,856
       700    Shared Medical Systems Corp.                           36,881
       700    TT Tieto OY ORD                                        59,016
     3,000    Tecnomatix Technologies Ltd.(1)                        92,625
       400    Veritas Software Corp.(1)                              19,850
     5,100    Viisage Technology, Inc.(1)                            58,650
                                                                 ----------
                                                                  2,259,142
                                                                 ----------

Shares                                                                  Value
- --------------------------------------------------------------------------------

COMPUTER SYSTEMS--1.6%
     5,300    Compaq Computer Corp.(1)                           $  573,725
     2,400    Computerland Poland S.A. ORD                           66,490
       300    Dell Computer Corp.(1)                                 33,731
       600    Gateway 2000, Inc.(1)                                  39,825
     1,300    Hewlett-Packard Co.                                    66,950
     7,400    International Business Machines
                Corp.                                               640,100
     1,000    OPTIMUS S.A. ORD                                       32,322
                                                                 ----------
                                                                  1,453,143
                                                                 ----------
CONSUMER PRODUCTS--1.5%
     7,000    Avon Products, Inc.                                   446,250
     1,700    Bang & Olufsen Holding A/S ORD                        101,723
     9,000    Canon, Inc. ORD                                       228,495
     4,200    Colgate-Palmolive Co.                                 260,400
     5,400    Helen of Troy Ltd.(1)                                 143,100
     7,650    Wolverine World Wide, Inc.                            197,944
                                                                 ----------
                                                                  1,377,912
                                                                 ----------
CONTROL & MEASUREMENT--0.2%
       800    Coherent, Inc.(1)                                      34,700
       300    Keyence Corporation ORD                                43,375
     5,900    Molecular Devices Corp.(1)                             86,656
                                                                 ----------
                                                                    164,731
                                                                 ----------
DIVERSIFIED COMPANIES--2.0%
    32,839    BBA Group plc ORD                                     180,093
     4,800    Bodycote International plc ORD                         58,629
     4,200    General Electric Co. (U.S.)                           253,575
    15,772    Granada Group plc ORD                                 224,061
    50,000    Guangzhou Investments Company
                Ltd. ORD                                             24,844
     2,200    Hexagon AB ORD                                         61,684
     5,400    Honeywell Inc.                                        392,850
     5,000    Investment AB Bure ORD                                 62,020
     6,474    Siebe plc ORD                                         101,842
     7,500    Tyco International Ltd.                               476,250
                                                                 ----------
                                                                  1,835,848
                                                                 ----------
EDUCATION--0.3%
     3,600    Apollo Group Inc. Cl A(1)                             126,675
     3,300    Learning Tree International, Inc.(1)                  129,525
                                                                 ----------
                                                                    256,200
                                                                 ----------

See Notes to Financial Statements


38   Strategic Allocation: Aggressive               American Century Investments


                            SCHEDULE OF INVESTMENTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

ELECTRICAL & ELECTRONIC
COMPONENTS--5.2%
     9,800    AMP, Inc.                                         $   403,025
     1,160    Advantest Corp. ORD                                    79,067
     3,100    ANADIGICS, Inc.(1)                                    102,687
    12,000    Anicom, Inc.(1)                                       113,250
     3,000    Applied Materials, Inc.                               195,562
    12,000    Elec & Eltek International
                Company Ltd. ORD                                     70,800
     1,100    Fujimi Incorporated ORD                                64,943
     3,000    Hoya Corp. ORD                                        136,581
     2,500    II-VI, Inc.(1)                                         48,125
     1,700    Innovex Inc.                                           47,600
     4,300    Intel Corp.                                           651,181
     3,300    JPM Co. (The)(1)                                      100,650
     1,800    Jabil Circuit, Inc.(1)                                105,412
     1,700    Lattice Semiconductor Corp.(1)                         98,388
       500    Leitch Technology Corp ORD                             11,854
     2,500    Nintendo Co., Ltd. ORD                                195,792
     1,200    Noritsu Koki Co. Limited ORD                           55,252
     5,600    Phillips Electronics N.V.                             313,600
     4,600    REMEC, Inc.(1)                                        134,837
     3,000    Rofin-Sinar Technologies Inc.(1)                       46,125
     3,000    Rohm Co. Ltd. ORD                                     312,406
     1,400    SGL CARBON Aktiengesellschaft
                ORD                                                 202,756
     1,300    Sanmina Corp.(1)                                       75,319
     2,200    Schneider SA ORD(1)                                   105,900
       900    Siemens AG ORD                                         50,834
     4,200    Sipex Corp.(1)                                        124,950
     1,300    Sony Corp. ORD                                        109,755
     5,400    Texas Instruments Inc.                                485,325
     7,200    Vitesse Semiconductor Corp.(1)                        258,750
                                                                 ----------
                                                                  4,700,726
                                                                 ----------
ENERGY (PRODUCTION & MARKETING)--4.3%
     6,800    Amoco Corp.                                           607,750
     1,100    Atlantic Richfield Co.                                160,050
     4,040    British-Borneo Petroleum
                Syndicate plc ORD                                    84,119
     5,000    Burlington Resources Inc.                             232,500
    11,200    Cairn Energy plc ORD(1)                                96,127
     5,500    Chevron Corp.                                         385,000

Shares                                                                  Value
- --------------------------------------------------------------------------------

    10,200    Exxon Corp.                                       $   604,350
     4,800    MAPCO Inc.                                            152,400
     4,900    Murphy Oil Corp.                                      227,237
       300    Phillips Petroeum Co.                                  12,750
     2,100    Quaker Chemical Corp.                                  34,388
     6,100    Rigel Energy Corp. ORD(1)                              76,186
       400    Royal Dutch Petroleum Co.                              78,100
    27,100    Santos Ltd. ORD                                       110,930
    12,500    Seagull Energy Corp.(1)                               225,000
       800    Shell Transport & Trading Co. ADR                      95,500
     5,400    Talisman Energy, Inc. ORD(1)                          177,040
     2,700    Texaco Inc.                                           294,637
       500    Union Texas Petroleum Holdings,
                Inc.                                                 10,063
     2,900    Unocal Corp.                                          123,613
     7,400    Woodside Petroleum Limited ORD                         62,412
                                                                 ----------
                                                                  3,850,152
                                                                 ----------
ENERGY (SERVICES)--1.7%
     2,000    Aker Maritime ASA ORD                                  33,558
     2,000    Baker Hughes Inc.                                      75,000
       800    Diamond Offshore Drilling, Inc.(1)                     56,900
     3,500    Hvide Marine, Inc.(1)                                  83,125
     1,300    IHC Caland N.V. ORD(1)                                 70,333
     3,700    Marine Drilling Companies, Inc.(1)                     74,231
     6,300    Noble Drilling Corp.(1)                               137,025
     2,000    Oceaneering International, Inc.(1)                     34,000
     1,000    Rowan Companies, Inc.(1)                               23,125
     1,200    Schlumberger Ltd.                                     142,950
     4,000    Smedvig ASA Cl A ORD                                   97,727
     1,000    Smedvig ASA Cl B ORD                                   24,291
     5,900    Smith International, Inc.(1)                          309,012
     5,000    Tidewater Inc.                                        210,625
     1,600    Trico Marine Services, Inc.(1)                         60,400
     1,000    Western Atlas Inc.(1)                                  67,875
                                                                 ----------
                                                                  1,500,177
                                                                 ----------
ENVIRONMENTAL SERVICES--1.2%
    12,800    Browning-Ferris Industries, Inc.                      419,200
     6,200    Superior Services Inc.(1)                             136,400
     1,600    Tomra Systems ASA ORD                                  36,619
     5,300    USA Waste Services, Inc.(1)                           192,125
     5,700    U.S. Filter Corp.(1)                                  179,550
     3,200  United Waste Systems, Inc.(1)                           122,200
                                                                 ----------
                                                                  1,086,094
                                                                 ----------

See Notes to Financial Statements


Semiannual Report                          Strategic Allocation: Aggressive   39


                            SCHEDULE OF INVESTMENTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

FINANCIAL SERVICES--3.0%
     6,800    BHW Holding AG ORD(1)                             $   118,895
     2,000    Bear Stearns Companies Inc.                            65,000
     2,600    Credit Suisse Group ORD(1)                            327,070
     1,200    Equitable Companies Inc.                               37,800
    11,900    Federal National Mortgage
                Association                                         519,138
     1,200    Green Tree Financial Corp.                             42,000
     4,365    ING Groep N.V. ORD                                    193,156
       100    Julius Baer Holding AG ORD                            137,650
     4,939    Kempen & Company NV ORD                               150,852
     2,000    Lehman Brothers Holdings, Inc.                         80,750
     1,300    Merrill Lynch & Co., Inc.                             137,800
       700    Money Store Inc. (The)                                 17,981
     1,800    Morgan Stanley Group, Inc.                            121,500
     5,200    Newcourt Credit Group, Inc. ORD
                (Acquired 2/15/96 through
                4/10/97, Cost $55,743)(2)                           121,584
    33,000    Peregrine Investments Holdings
                Limited ORD                                          58,773
     3,100    Rental Service Corp.(1)                                67,425
     2,000    Salomon Inc.                                          107,250
       130    Takefuji Corporation ORD                                6,075
     6,500    Travelers Group, Inc.                                 356,687
    13,000    United Merchant Group ORD(1)                           20,692
                                                                 ----------
                                                                  2,688,078
                                                                 ----------
FOOD & BEVERAGE--1.5%
    19,055    Archer-Daniels-Midland Co.                            381,100
    30,000    Guangnan Holdings ORD                                  48,203
     8,300    Guinness plc ORD                                       77,429
     1,000    Huhtamaki Group ORD                                    43,903
     1,200    Interstate Bakeries Corp.                              64,500
     2,900    J.D. Wetherspoon plc ORD                               62,641
     1,200    Lance, Inc.                                            23,475
       600    Michael Foods, Inc.                                     8,512
       100    Nestle S.A. ORD                                       124,558
     8,700    Northland Cranberries, Inc.                           112,556
     1,100    OY Hartwall AB ORD                                     51,285
    14,200    Ralcorp Holdings, Inc.(1)                             172,175
     4,100    Universal Foods Corp.                                 147,087
                                                                 ----------
                                                                  1,317,424
                                                                 ----------

Shares                                                                  Value
- --------------------------------------------------------------------------------

FURNITURE & FURNISHINGS--0.2%
     4,400    Miller (Herman), Inc.                              $  156,750
                                                                 ----------
HEALTHCARE--1.6%
       500    Columbia/HCA Healthcare Corp.                          18,313
     4,400    Health Management Associates,
                Inc.(1)                                             128,700
     8,300    Humana Inc.(1)                                        187,787
     1,000    Lincare Holdings Inc.(1)                               38,938
     2,600    Oxford Health Plans, Inc.(1)                          182,812
     6,700    Quorum Health Group, Inc.(1)                          238,269
       500    Rhoen Klinikum AG ORD                                  61,272
     4,000    Tenet Healthcare Corp.(1)                             110,000
     7,800    United HealthCare Corp.                               440,700
                                                                 ----------
                                                                  1,406,791
                                                                 ----------
INDUSTRIAL EQUIPMENT & MACHINERY--1.0%
    22,000    Ashtead Group plc ORD                                 111,814
     1,200    Caterpillar Inc.                                      117,150
     6,200    Cooper Industries, Inc.                               316,200
     1,300    Dover Corp.                                            74,425
     1,600    Dresser Industries, Inc.                               54,800
     3,000    Ingersoll-Rand Co.                                    163,500
       100    Mannesmann AG ORD                                      40,692
     3,400    Pfeiffer Vacuum Technology AG
                ADR(1)                                               76,925
                                                                 ----------
                                                                    955,506
                                                                 ----------
INSURANCE--4.0%
     2,400    AXA-UAP ORD                                           143,941
     8,900    Allstate Corp.                                        655,262
     1,600    American International Group, Inc.                    216,600
       100    Argonaut Group, Inc.                                    2,913
     1,930    Assurantieconcern Stad Rotterdam
                ORD                                                  86,511
       300    CIGNA Corp.                                            52,125
     3,200    CNA Financial Corp.(1)                                327,600
     3,700    Chubb Corp. (The)                                     225,700
     6,000    Companhia de Seguros Mundial
                Confianca, SA ORD(1)                                 79,490
    11,300    Conseco Inc.                                          452,000
       500    Gallagher (Arthur J.) & Co.                            15,875
     1,200    General Re Corp.                                      210,300
       600    ITT Hartford Group, Inc.                               46,800
     1,600    Lincoln National Corp.                                 97,400

See Notes to Financial Statements


40   Strategic Allocation: Aggressive               American Century Investments


                            SCHEDULE OF INVESTMENTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

     4,500    NAC Re Corp.                                      $   179,438
       200    Old Republic International Corp.                        6,025
     4,700    Pohjola Insurance Group Cl B
                ORD                                                 136,953
    16,056    Reinsurance Australia Corporation
                Ltd. ORD                                             50,697
     5,400    SAFECO Corp.                                          234,562
       800    Sampo Insurance Company Ltd.
                ORD                                                  69,933
     2,000    Skandia Forsakrings AB ORD                             70,676
     2,700    St. Paul Companies, Inc.                              193,388
       900    UNUM Corp.                                             71,213
                                                                 ----------
                                                                  3,625,402
                                                                 ----------
LEISURE--1.0%
    47,000    Corporacion Interamericana de
                Entretenimiento S.A. ORD(1)                         190,043
     2,600    Doubletree Corp.(1)                                   116,837
     3,500    HFS, Inc.(1)                                          188,562
     6,700    Hilton Hotels Corporation                             189,275
     1,600    King World Productions, Inc.                           60,200
    82,000    Solid Group, Inc. ORD                                  15,390
    10,000    Yamaha Corp. ORD                                      190,198
                                                                 ----------
                                                                    950,505
                                                                 ----------
MACHINERY & EQUIPMENT--0.8%
       100    Barmag AG ORD(1)                                       17,444
     3,100    Boewe Systec AG ORD                                   112,331
       900    Cymer, Inc.(1)                                         47,700
     3,850    Diebold, Inc.                                         144,375
     9,100    Intevac, Inc.(1)                                      144,462
       220    Rieter Holdings Ltd. ORD                               71,621
       200    Swisslog Holding AG ORD(1)                             70,771
       600    Thermedics Inc.(1)                                     10,050
     3,400    Veeco Instruments Inc.(1)                             141,100
                                                                 ----------
                                                                    759,854
                                                                 ----------
MEDICAL EQUIPMENT & SUPPLIES--0.9%
     2,600    Hillenbrand Industries, Inc.                          122,525
       600    Hologic, Inc.(1)                                       14,288
     2,000    Instrumentarium Group Cl A ORD                         83,920
     1,000    Ortivus AB Cl B ORD(1)                                 38,504
     1,200    Physician Sales & Service, Inc.(1)                     17,250
     4,400    Sabratek Corp.(1)                                     117,425

Shares                                                                  Value
- --------------------------------------------------------------------------------

     5,000    SeaMED Corp.(1)                                     $  86,250
     2,500    Spectra-Physics AB ORD                                 42,961
    12,000    Terumo Corporation ORD                                211,713
       200    Thermo Electron Corp.(1)                                6,900
       700    Thermo Instrument Systems Inc.(1)                      23,975
     1,300    US Surgical Corp.                                      43,875
                                                                 ----------
                                                                    809,586
                                                                 ----------
METALS & MINING--0.3%
       700    Oregon Metallurgical Corp.(1)                          18,025
     2,100    Reynolds Metals Co.                                   142,538
       900    Vulcan Materials Co.                                   65,700
       700    Zeigler Coal Holding Co.                               16,275
                                                                 ----------
                                                                    242,538
                                                                 ----------
OFFICE EQUIPMENT & SUPPLIES--0.7%
     3,000    Canon Copyer Sales Co. ORD                             31,241
     8,900    Xerox Corp.                                           602,975
                                                                 ----------
                                                                    634,216
                                                                 ----------
PAPER & FOREST PRODUCTS--0.9%
     4,600    Chesapeake Corp.                                      154,100
     5,500    Kimberly-Clark de Mexico, SA de
                CV ORD                                               19,077
     1,900    Rayonier, Inc.                                         81,462
     7,000    Uni-Charm Corporation ORD                             236,155
     3,700    Union Camp Corp.                                      194,250
     4,900    Westvaco Corp.                                        153,125
                                                                 ----------
                                                                    838,169
                                                                 ----------
PERSONAL SERVICES--0.3%
     6,900    Stewart Enterprises, Inc. Cl A                        231,581
                                                                 ----------
PHARMACEUTICALS--4.8%
     4,000    Abbott Laboratories                                   252,000
     3,000    Apothekers Cooperative OPG
                ORD                                                  91,473
     2,500    Bio-Technology General
                Corporation(1)                                       35,938
     1,700    Bristol-Myers Squibb Co.                              124,737
       500    Christian Hansen Holding A/S
                Cl B ORD                                             59,991
     8,700    Dura Pharmaceuticals, Inc.(1)                         347,456
     5,035    Getinge Industrier AB ORD                              91,404
     6,800    Lilly (Eli) & Co.                                     632,400

See Notes to Financial Statements


Semiannual Report                          Strategic Allocation: Aggressive   41


                            SCHEDULE OF INVESTMENTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

    10,500    Mallinckrodt Inc.                                  $  392,437
     1,000    Matsumoto Medical Instruments,
                Inc. ORD                                             39,675
     2,800    Medicis Pharmaceutical Corp.(1)                        95,375
     7,900    Merck & Co., Inc.                                     710,012
       323    Novartis AG ORD                                       440,039
     4,700    Omnicare, Inc.                                        134,538
     2,200    Pharmacia & Upjohn Inc.                                76,175
        22    Roche Holding AG ORD                                  195,867
     8,000    Sankyo Company, Ltd. ORD                              254,056
     3,400    Warner-Lambert Co.                                    342,550
       900    Watson Pharmaceuticals Inc.(1)                         35,381
                                                                 ----------
                                                                  4,351,504
                                                                 ----------
PRINTING & PUBLISHING--0.6%
     2,800    Banta Corp.                                            77,350
     2,875    McClatchy Newspapers, Inc.                             80,141
     1,000    Meredith Corp.                                         25,875
     1,300    Moore Corporation Ltd.                                 28,925
     3,800    Moore Corporation Ltd. ORD                             84,987
     1,000    Tribune Co.                                            43,250
     7,400    VNU Tijdschriftengroep Nederland
                ORD                                                 167,393
                                                                 ----------
                                                                    507,921
                                                                 ----------
RAILROADS--0.4%
     6,300    CSX Corp.                                             333,900
                                                                 ----------
REAL ESTATE--0.1%
    27,000    Parkway Holdings Ltd. ORD                             134,009
                                                                 ----------
RESTAURANTS--0.4%
       700    Applebee's International Inc.(1)                       17,281
     1,000    Boston Chicken, Inc.(1)                                18,063
     2,000    Logan's Roadhouse, Inc.(1)                             46,750
       300    Lone Star Steakhouse & Saloon,
                Inc.(1)                                               6,881
     3,400    PJ America, Inc.(1)                                    59,500
     3,500    PizzaExpress plc ORD                                   39,164
     5,600    Rainforest Cafe, Inc.(1)                              136,850
                                                                 ----------
                                                                    324,489
                                                                 ----------

Shares                                                                  Value
- --------------------------------------------------------------------------------

RETAIL (APPAREL)--0.9%
     3,400    Blacks Leisure Group PLC ORD                     $     30,073
     3,100    Fast Retailing Co. Ltd. ORD                           100,581
     3,200    Genesco Inc.(1)                                        44,000
     1,600    Gucci Group N.V.                                      111,600
     2,500    Hennes & Mauritz AB Cl B ORD                           81,724
     2,700    Hot Topic, Inc.(1)                                     77,963
     5,500    Jones Apparel Group, Inc.(1)                          257,812
     3,400    Ross Stores, Inc.                                      96,687
       600    TJX Companies, Inc. (The)                              28,800
                                                                 ----------
                                                                    829,240
                                                                 ----------
RETAIL (FOOD & DRUG)--1.3%
     8,100    Albertson's, Inc.                                     271,350
     2,760    Circle K Japan Co., Ltd. ORD                          147,507
    15,800    Giant Food Inc. Cl A                                  520,412
     1,530    Koninklijke Ahold NV ORD                              116,349
     1,800    Richfood Holdings, Inc.                                41,625
     1,500    Universal Corp.                                        54,562
                                                                 ----------
                                                                  1,151,805
                                                                 ----------
RETAIL (GENERAL MERCHANDISE)--1.6%
     3,200    Consolidated Stores Corp.(1)                          122,400
    11,500    Dillard Department Stores, Inc. Cl A                  388,125
     5,200    Family Dollar Stores, Inc.                            133,900
       100    Fingerhut Companies, Inc.                               1,763
     3,000    Grupo Elektra, S.A. de C.V. GDR                        57,000
       100    Harcourt General, Inc.                                  4,737
     4,800    Kohl's Corp.(1)                                       258,600
       700    Lands' End, Inc.(1)                                    21,087
    11,400    Next Plc ORD                                          138,589
     5,900    Penney (J.C.) Company, Inc.                           303,850
       100    Pinault-Printemps-Redoute SA
                ORD                                                  42,009
                                                                 ----------
                                                                  1,472,060
                                                                 ----------
RETAIL (SPECIALTY)--0.6%
     6,700    Action Performance Cos. Inc.(1)                       161,219
     2,300    Cortefiel, S.A. ORD                                    85,055
     4,500    DeoDeo Corporation ORD                                 94,884
     3,900    Home Depot, Inc.                                      245,700
                                                                 ----------
                                                                    586,858
                                                                 ----------
RUBBER & PLASTICS(3)
       400    Carlisle Companies, Inc.                               12,200
                                                                 ----------

See Notes to Financial Statements


42   Strategic Allocation: Aggressive               American Century Investments


                            SCHEDULE OF INVESTMENTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

MAY 31, 1997 (UNAUDITED)

Shares                                                                  Value
- --------------------------------------------------------------------------------

STEEL--0.1%
       500    Intermet Corp.                                     $    6,875
     1,900    USX-Marathon Group                                     56,525
     1,300    Vallourec SA ORD                                       74,470
                                                                 ----------
                                                                    137,870
                                                                 ----------
TEXTILES & APPAREL--0.3%
     3,300    Dexter Corp.                                           99,412
       700    Nautica Enterprises, Inc.(1)                           16,494
       700    NIKE, Inc.                                             39,900
     2,800    Sport-Haley, Inc.(1)                                   52,850
     1,400    Timberland Co. (The)(1)                                82,075
                                                                 ----------
                                                                    290,731
                                                                 ----------
TOBACCO--0.6%
     2,300    Consolidated Cigar Holdings, Inc.(1)                   69,575
     1,500    Fortune Brands Pty. Ltd.(1)                            73,500
     2,700    General Cigar Holdings, Inc.(1)                        79,650
     5,800    Philip Morris Companies Inc.                          255,200
     2,000    RJR Nabisco, Inc.                                      64,750
                                                                 ----------
                                                                    542,675
                                                                 ----------
TRANSPORTATION--0.7%
     4,600    Allied Holdings, Inc.(1)                               45,425
     3,000    Go-Ahead Group (The) PLC ORD                           21,346
    25,000    International Container Terminal
                Services, Inc. ORD(1)                                13,507
     5,740    Internatio-Muller NV ORD                              184,891
     1,545    Koninklijke Pakhoed NV ORD                             52,343
     2,300    Koninklijke Van Ommeren N.V.
                ORD                                                  93,386
    11,634    Stagecoach Holdings plc ORD                           127,605
     1,700    XTRA Corp.                                             72,888
                                                                 ----------
                                                                    611,391
                                                                 ----------
UTILITIES--2.5%
   142,000    Compenhia de Saneamento
                Basico do Estado de Sao
                Paulo ORD(1)                                         33,832
     2,000    Commonwealth Energy System                             43,500
       200    Compagnie Generale des Eaux
                ORD(1)                                               24,650
       700    Entergy Corp.                                          18,462
    14,000    Florida Progress Corp.                                411,250
       900    General Public Utilities Corp.                         31,500

Shares                                                                  Value
- --------------------------------------------------------------------------------

     4,800    Houston Industries Inc.                        $       99,600
    14,200    New York State Electric &
                Gas Corp.                                           308,850
     6,300    Potomac Electric Power                                144,900
     9,800    Public Service Enterprise Group Inc.                  242,550
     8,900    Texas Utilities Electric Co.                          305,937
     7,900    Union Electric Co.                                    289,337
    13,800    Wisconsin Energy Corp.                                332,925
                                                                 ----------
                                                                  2,287,293
                                                                 ----------
TOTAL COMMON STOCKS
& WARRANTS--71.3%                                                64,581,278
                                                                 ----------
   (Cost  $56,973,628)

PREFERRED STOCKS
BANKING--0.1%
       200    Liechtenstein Global Trust AG ORD                     115,782
                                                                 ----------
CHEMICALS & RESINS--0.2%
     2,938    Henkel KGaA ORD                                       166,065
                                                                 ----------
COMMUNICATIONS SERVICES--0.2% 1,100 Telecomunicacoes Brasileiras S.A.
                ADR                                                 151,112
   218,476    Telecomunicacoes de Minas
                Gerais - Telemig ORD                                 32,863
                                                                 ----------
                                                                    183,975
                                                                 ----------
COMPUTER SOFTWARE & SERVICES(3)
       200    SAP AG ORD                                             36,470
                                                                 ----------
FINANCIAL SERVICES--0.4%
     1,429    Marschollek, Lautenschlaeger und
                Partner AG ORD                                      343,530
                                                                 ----------
MEDICAL EQUIPMENT & SUPPLIES--0.3%
     1,022    Fresenius AG ORD                                      226,332
                                                                 ----------
RETAIL (FOOD & DRUG)(3)
       700    Bompreco S.A. Supermercados do
                Nordeste GDR (Acquired 5/5/97,
                Cost $16,275)(2)                                     15,890
                                                                 ----------
TOTAL PREFERRED STOCKS--1.2%                                      1,088,044
                                                                 ----------
   (Cost $660,496)

See Notes to Financial Statements


Semiannual Report                          Strategic Allocation: Aggressive   43


                            SCHEDULE OF INVESTMENTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

MAY 31, 1997 (UNAUDITED)

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

U.S. TREASURY SECURITIES(4)
$  400,000    U.S. Treasury Bill, 4.13%, 6/5/97                 $   399,778
   675,000    U.S. Treasury Note, 6.375%,
                3/31/01                                             672,894
   190,000    U.S. Treasury Note, 6.625%,
                7/31/01                                             191,009
 2,075,000    U.S. Treasury Note, 7.50%,
                5/15/02                                           2,161,901
 1,425,000    U.S. Treasury Note, 5.75%,
                08/15/03                                          1,366,660
   400,000    U.S. Treasury Note, 5.875%,
                11/15/05                                            379,500
   225,000    U.S. Treasury Bond, 6.75%,
                8/15/26                                             219,024
                                                                 ----------
TOTAL U.S. TREASURY SECURITIES--5.9%                              5,390,766
                                                                 ----------
   (Cost  $5,393,621)

MORTGAGE-BACKED SECURITIES(5)
   402,588    FNMA Pool #377181, 6.50%,
                4/1/12                                              393,204
    97,783    FNMA Pool #250576, 7.00%,
                6/1/26                                               95,307
 1,003,167    FNMA Pool #373510, 7.50%,
                3/1/27                                            1,000,559
   215,748    GNMA Pool #397233, 9.50%,
                2/20/25                                             230,054
   176,168    GNMA Pool #392995, 8.75%,
                3/15/25                                             184,009
   154,558    GNMA Pool #372335, 7.50%,
                4/15/25                                             154,132
   143,668    GNMA Pool #416856, 7.50%,
                10/15/25                                            143,480
   150,090    GNMA Pool #402682, 7.50%,
                6/15/26                                             149,676
                                                                 ----------
TOTAL MORTGAGE-BACKED
SECURITIES--2.6%                                                  2,350,421
                                                                 ----------
   (Cost  $2,348,957)

CORPORATE BONDS
AEROSPACE & DEFENSE--0.3%
   300,000    Lockheed Martin Corp., 7.25%,
                5/15/06                                             301,125
                                                                 ----------

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

AIRLINES--0.2%
$  150,000    UAL Corp., 9.00%, 12/15/03                           $161,812
                                                                 ----------
AUTOMOBILES & AUTO PARTS--0.1%
   100,000    General Motors Acceptance Corp.,
                8.50%, 2/4/02                                       106,250
                                                                 ----------
BANKING--0.5%
   300,000    Citicorp, 7.125%, 5/15/06                             297,750
   100,000    Santander Financial Issuances Ltd.,
                7.00%, 4/1/06                                        98,250
                                                                 ----------
                                                                    396,000
                                                                 ----------
COMMUNICATIONS SERVICES--0.3%
   150,000    360 Communications Co., 7.125%,
                3/1/03                                              148,875
   100,000    Tele-Communications Inc., 8.25%,
                1/15/03                                             101,875
                                                                 ----------
                                                                    250,750
                                                                 ----------
ELECTRICAL & ELECTRONIC
COMPONENTS--0.4%
   350,000    Anixter Intl. Inc., 8.00%, 9/15/03                    357,437
                                                                 ----------
ENERGY (PRODUCTION & MARKETING)--0.8%
   525,000    Oryx Energy Co., 8.375%,
                7/15/04                                             547,969
   200,000    Triton Energy Ltd., 8.75%,
                4/15/02                                             202,000
                                                                 ----------
                                                                    749,969
                                                                 ----------
FINANCIAL SERVICES--0.8%
   250,000    Guangdong Enterprises, 8.875%,
                5/22/07 (Acquired 5/15/97,
                Cost $249,625)(2)                                   251,875
   500,000    Wharf International Finance Ltd.,
                7.625%, 3/13/07 (Acquired
                3/6/97, Cost $496,045)(2)                           493,750
                                                                 ----------
                                                                    745,625
                                                                 ----------
HEALTHCARE--0.6%
   500,000    Tenet Healthcare Corp., 7.875%,
                1/15/03                                             500,625
                                                                 ----------
INSURANCE--0.1%
   100,000    Aetna Inc., 6.75%, 8/15/01                             99,750
                                                                 ----------
LEISURE--0.2%
   125,000  Time Warner Inc., 8.11%, 8/15/06                        128,125
                                                                 ----------
See Notes to Financial Statements


44   Strategic Allocation: Aggressive               American Century Investments


                            SCHEDULE OF INVESTMENTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

MAY 31, 1997 (UNAUDITED)

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

REAL ESTATE--0.3%
$  275,000    Spieker Properties, Inc., 6.80%,
                12/15/01                                        $   272,594
                                                                 ----------
RETAIL (GENERAL MERCHANDISE)--0.2%
   200,000    Federated Department Stores,
                8.50%, 6/15/03                                      212,250
                                                                 ----------
TOBACCO--0.3%
   300,000    Philip Morris Companies Inc.,
                6.80%, 12/1/03                                      293,250
                                                                 ----------
UTILITIES--0.1%
   100,000    Pacific Gas and Electric Company,
                6.25%, 3/1/04                                        96,125
                                                                 ----------
TOTAL CORPORATE BONDS--5.2%                                       4,671,687
                                                                 ----------
   (Cost  $4,630,543)

SOVEREIGN GOVERNMENTS & AGENCIES
$  500,000 Argentine Discount Notes,
               VRN, 6.875%, 11/28/97,
               resets semi-annually off the
               6-month LIBOR plus
               0.8125% with no caps,
               final maturity 3/31/23                               427,500
$  250,000 Brazil NMB L, VRN, 6.94%,
               10/15/97, resets
               semi-annually off the
               6-month LIBOR plus
               0.875% with no caps, final
               maturity 4/15/09                                     218,594
DEM1,300,000 Bundesobligation, 5.875%,
               5/15/00                                              798,675
DEM2,000,000 Federal Republic of Germany,
               6.00%, 9/15/03                                     1,219,232
CAD800,000 Government of Canada,
               7.25%, 6/01/03                                       614,980
FRF1,500,000 Government of France, 8.50%,
               4/25/03                                              304,520
ITL500,000,000  Government of Italy, 9.50%,
               2/1/01                                               320,626
 $ 100,000 Quebec Province, 8.80%,
               4/15/03                                              108,625

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

$  250,000 Republic of Brazil EI, VRN,
               6.875%, 10/15/97, resets
               semi-annually off the
               6-month LIBOR plus
               0.8125% with no caps, final
               maturity 4/15/06                                 $   230,312
ITL125,000,000  Republic of Italy, 3.50%,
               6/20/01                                            1,140,997
GBP350,000 United Kingdom Treasury,
               8.00%, 6/10/03                                       597,495
$  250,000 United Mexican States, 8.50%,
               9/15/02                                              251,575
$  500,000 United Mexican States, VRN,
               6.835%, 11/3/97, resets
               semi-annually off the
               6-month LIBOR plus
               0.8125% with no caps, final
               maturity 12/31/19                                    460,625
$  476,190 Venezuela FLIRB, VRN, 6.75%,
               9/30/97, resets
               semi-annually off the
               6-month LIBOR plus
               0.875% with no caps, final
               maturity 3/31/07                                     436,011
                                                                 ----------
TOTAL SOVEREIGN
GOVERNMENTS & AGENCIES--7.9%                                      7,129,767
                                                                 ----------
   (Cost  $7,176,223)

COMMERCIAL PAPER(4)
BANKING--2.2%
 1,700,000    Nordbanken North America,
                5.45%, 7/18/97                                    1,687,660
   350,000    Spintab-Swedmortgage AB, 5.39%,
                6/30/97                                             348,407
                                                                 ----------
                                                                  2,036,067
                                                                 ----------
FINANCIAL SERVICES--1.5%
 1,335,000    Hitachi Credit America Corp.,
                5.40%-5.44%, 6/12/97 through
                6/25/97                                           1,330,495
                                                                 ----------
INSURANCE--0.6%
   500,000    Principal Mutual, 5.51%, 6/5/97                       499,693
                                                                 ----------

See Notes to Financial Statements


Semiannual Report                          Strategic Allocation: Aggressive   45


                            SCHEDULE OF INVESTMENTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

MAY 31, 1997 (UNAUDITED)

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

UTILITIES--0.7%
$  636,000    Southern California Gas Co.,
                5.42%, 7/7/97 (Acquired
                4/4/97, Cost $626,750)(2)                     $     632,457
                                                                 ----------
TOTAL COMMERCIAL PAPER--5.0%                                      4,498,712
                                                                 ----------
   (Cost $4,498,712)

TEMPORARY CASH INVESTMENTS--0.9%
   Repurchase Agreement, Morgan (J.P.) & Co.
      Inc., (U.S. Treasury obligations), in a joint
      trading account at 5.50%, dated 5/30/97,
      due 6/2/97 (Delivery value $800,367)
   (Cost $800,000)                                                  800,000
                                                                 ----------
TOTAL INVESTMENT SECURITIES--100.0%                             $90,510,675
                                                                 ==========
   (Cost  $82,482,180)

FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS
     Contracts        Settlement                         Unrealized
      to Sell            Date             Value              (Loss)
- --------------------------------------------------------------------
      529,841 CHF       6/30/97        $  376,305        $  (15,265)
    2,006,427 DEM       6/30/97         1,178,677           (22,567)
    1,684,718 FRF       6/30/97           292,933            (6,143)
      290,174 GBP       6/30/97           475,467            (4,761)
    1,044,233 NLG       6/30/97           545,232            (7,399)
                                        ----------------------------
                                       $2,868,614          $(56,135)
                                        ============================
(Value on Settlement Date $2,812,479)

Notes to Schedule of Investments
ADR = American Depositary Receipt
CAD = Canadian Dollar
CHF = Swiss Franc
DEM = German Mark
FNMA = Federal  National  Mortgage  Association 
FRF = French Franc 
GBP = British Pound 
GDR = Global Depositary Receipt 
GNMA = Government National Mortgage Association 
ITL = Italian Lira 
JPY = Japanese Yen 
LIBOR = London Interbank Offered Rate 
NLG = Netherlands Guilder 
ORD = Foreign Ordinary Share 
resets = The frequency with which a fixed-income security's coupon changes,
based on current market conditions or an underlying index. The more frequently a
security resets, the less risk the investor is taking that the coupon will vary
significantly from current market rates.
VRN = Variable Rate Note. Interest reset date is indicated and used in
calculating the weighted average portfolio maturity. Rate shown is effective May
31, 1997. 
(1) Non-income producing. 
(2) Security was purchased under Rule 144A or Section 4(2) of the Securities Act
of 1933 and, unless registered under the Act or exempted from registration, may
only be sold to qualified institutional investors. The aggregate value of
restricted securities at May 31, 1997, was $1,541,675, which represented 1.7% of
net assets. 
(3) Industry is less than 0.05% of the Fund's total investment securities.  
(4) The rates for U.S. Treasury Bills and commercial paper are the yield to 
maturity as of May 31, 1997. 
(5) Final maturity indicated. Expected remaining maturity used for purposes of 
calculating the weighted average portfolio maturity.

See Notes to Financial Statements


46   Strategic Allocation: Aggressive               American Century Investments


<TABLE>
<CAPTION>
                      STATEMENTS OF ASSETS AND LIABILITIES

MAY 31, 1997 (UNAUDITED)

                                                                     STRATEGIC        STRATEGIC         STRATEGIC
                                                                    ALLOCATION:      ALLOCATION:       ALLOCATION:
                                                                   CONSERVATIVE       MODERATE         AGGRESSIVE
ASSETS
Investment securities, at value (identified cost of $53,496,757,
<S>                                                                <C>             <C>              <C>        
  $128,323,399 and $82,482,180, respectively) (Note 3) ..........  $55,688,450     $137,671,511     $90,510,675
Foreign currency holdings, at value (identified cost
  of $8,496, $22,043 and  $29,433, respectively) ................        8,505           20,682          28,812
Cash ............................................................       30,670           37,377          78,298
Receivable for investments sold .................................      150,590          503,523         524,188
Receivable for capital shares sold ..............................       38,255          247,098         139,851
Dividends and interest receivable ...............................      390,122          796,028         436,602
                                                                    ----------      -----------      ----------
                                                                    56,306,592      139,276,219      91,718,426
                                                                    ----------      -----------      ----------

LIABILITIES
Disbursements in excess of demand deposit cash ..................        1,022           57,723         175,264
Payable for forward foreign currency exchange contracts .........       24,891           77,165          56,135
Payable for investments purchased ...............................       51,879          188,755         116,518
Payable for capital shares redeemed .............................       42,257          144,247          76,027
Accrued management fees (Note 2) ................................       46,108          125,528          89,951
Distribution fees payable (Note 2) ..............................          830            1,552           1,237
Service fees payable (Note 2) ...................................          830            1,552           1,237
                                                                    ----------      -----------      ----------
                                                                       167,817          596,522         516,369
                                                                    ----------      -----------      ----------
Net assets ......................................................  $56,138,775     $138,679,697     $91,202,057
                                                                   ===========     ============     ===========

NET ASSETS CONSIST OF:
Capital (par value and paid in surplus) .........................  $53,697,218     $130,191,798     $84,445,510
Undistributed net investment income .............................      339,356          352,106         532,626
Accumulated undistributed net realized loss
  from investment and foreign currency transactions .............      (55,484)      (1,106,769)     (1,728,110)
Net unrealized appreciation on investments and translation of
  assets and liabilities in foreign currencies (Note 3) .........    2,157,685        9,242,562       7,952,031
                                                                    ----------      -----------      ----------
                                                                   $56,138,775     $138,679,697     $91,202,057
                                                                   ===========     ============     ===========
Investor Class
Net assets ......................................................  $52,126,036     $131,245,756     $85,241,540
Shares outstanding ..............................................    9,825,358       23,596,917      14,843,861
Net asset value per share .......................................  $      5.31     $        .56     $      5.74
Advisor Class
Net assets ......................................................  $ 4,012,739     $  7,433,941     $ 5,960,517
Shares outstanding ..............................................      756,106        1,337,509       1,039,017
Net asset value per share ....................................... $       5.31     $       5.56     $      5.74
</TABLE>

See Notes to Financial Statements


Semiannual Report                      Statements of Assets and Liabilities   47


<TABLE>
<CAPTION>
                            STATEMENTS OF OPERATIONS

FOR THE SIX MONTHS ENDED MAY 31, 1997 (UNAUDITED)

                                                                     STRATEGIC        STRATEGIC         STRATEGIC
                                                                    ALLOCATION:      ALLOCATION:       ALLOCATION:
                                                                   CONSERVATIVE       MODERATE         AGGRESSIVE
INVESTMENT INCOME
Income:
<S>                                                                <C>               <C>             <C>       
Interest .......................................................   $   898,838       $1,434,595      $  650,321
Dividends (net of foreign taxes withheld of $5,546,
   $24,684, and $21,055, respectively) .........................       166,002          544,597         410,757
                                                                     ---------        ---------       ---------
                                                                     1,064,840        1,979,192       1,061,078
                                                                     ---------        ---------       ---------

Expenses (Note 2):
Management fees ................................................       235,052          600,268         439,611
Distribution fees - Advisor Class ..............................         4,888            9,169           7,377
Shareholder services fees - Advisor Class ......................         4,888            9,169           7,377
Directors' fees and expenses ...................................           283              663             444
                                                                     ---------        ---------       ---------
                                                                       245,111          619,269         454,809
                                                                     ---------        ---------       ---------
Net investment income ..........................................       819,729        1,359,923         606,269
                                                                     ---------        ---------       ---------

REALIZED AND UNREALIZED GAIN (LOSS)
ON INVESTMENTS AND FOREIGN CURRENCY (NOTE 3)
Net realized gain (loss) on:
Investments ....................................................      (152,913)      (1,422,449)     (1,716,788)
Foreign currency transactions ..................................       144,752          402,085         293,647
                                                                     ---------        ---------       ---------
                                                                        (8,161)      (1,020,364)     (1,423,141)
                                                                     ---------        ---------       ---------
Change in net unrealized appreciation on:
Investments ....................................................       806,821        5,464,752       4,984,313
Translation of assets and liabilities in foreign currencies ....       (41,194)        (122,383)        (89,670)
                                                                     ---------        ---------       ---------
                                                                       765,627        5,342,369       4,894,643
                                                                     ---------        ---------       ---------
Net realized and unrealized gain on
investments and foreign currency ...............................       757,466        4,322,005       3,471,502
                                                                     ---------        ---------       ---------
Net Increase in Net Assets
Resulting from Operations ......................................    $1,577,195       $5,681,928      $4,077,771
                                                                    ==========       ==========      ==========
</TABLE>

See Notes to Financial Statements


48   Statements of Operations                       American Century Investments

<TABLE>
<CAPTION>
                      STATEMENTS OF CHANGES IN NET ASSETS

SIX MONTHS ENDED MAY 31, 1997 (UNAUDITED) AND PERIOD ENDED NOVEMBER 31, 1996

                                               STRATEGIC               STRATEGIC                STRATEGIC
                                              ALLOCATION:             ALLOCATION:              ALLOCATION:
                                             CONSERVATIVE              MODERATE                AGGRESSIVE

Increase (Decrease) in Net Assets         1997       1996(1)       1997        1996(1)      1997        1996(1)
OPERATIONS
<S>                                  <C>           <C>        <C>          <C>          <C>          <C>        
Net investment income ...............$     819,729 $  439,906 $  1,359,923 $    675,244 $    606,269 $   312,027
Net realized gain (loss) on
  investments and foreign currency
  transactions ......................      (8,161)     60,039   (1,020,364)      (5,837)  (1,423,141)   (315,887)
Change in net unrealized
  appreciation on investments and
  translation of assets and
  liabilites in foreign currencies ..     765,627   1,392,058    5,342,369    3,900,193    4,894,643   3,057,388
                                        ---------   ---------    ---------    ---------    ---------   ---------
Net increase in net assets resulting
  from operations ...................   1,577,195   1,892,003    5,681,928    4,569,600    4,077,771   3,053,528
                                        ---------   ---------    ---------    ---------    ---------   ---------

DISTRIBUTIONS TO SHAREHOLDERS 
From net investment income:
  Investor Class ....................    (620,330)   (233,977)  (1,191,477)    (397,443)    (334,673)         --
  Advisor Class .....................     (52,638)         --      (83,235)          --      (40,079)         --
From net realized gain from 
 investment transactions:
  Investor Class ....................    (107,668)         --      (80,981)          --           --          --
  Advisor Class .....................     (13,028)         --      (10,493)          --           --          --
                                        ---------   ---------    ---------    ---------    ---------   ---------
Decrease in net assets from
  distributions .....................    (793,664)   (233,977)  (1,366,186)    (397,443)    (374,752)         --
                                        ---------   ---------    ---------    ---------    ---------   ---------

CAPITAL SHARE TRANSACTIONS (NOTE 4)
Net increase in net assets from
  capital share transactions ........  18,272,297  35,424,921   68,961,633   61,230,165   35,350,998  49,094,512
                                       ----------  ----------   ----------   ----------   ----------  ----------
Net increase in net assets ..........  19,055,828  37,082,947   73,277,375   65,402,322   39,054,017  52,148,040

Net Assets
Beginning of period .................  37,082,947          --   65,402,322           --   52,148,040          --
                                        ---------   ---------    ---------    ---------    ---------   ---------
End of period ....................... $56,138,775 $37,082,947 $138,679,697  $65,402,322  $91,202,057 $52,148,040
                                      =========== =========== ============  ===========  =========== ===========
Undistributed net investment income . $   339,356 $   192,595 $    352,106  $   266,895  $   532,626          --
                                      =========== =========== ============  ===========  =========== ===========

(1)  February 16, 1996 (inception) through November 31, 1996.
</TABLE>

See Notes to Financial Statements


Semiannual Report                       Statements of Changes in Net Assets   49


                         NOTES TO FINANCIAL STATEMENTS

MAY 31, 1997 (UNAUDITED)

1. Organization and Summary of Significant Accounting Policies

Organization--American   Century   Strategic   Asset   Allocations,   Inc.  (the
Corporation)  is  registered  under  the  Investment  Company  Act of 1940 as an
open-end diversified  management  investment company.  Three series of funds are
currently  issued  as  American  Century  Strategic   Allocation:   Conservative
(Strategic  Allocation:  Conservative),  American Century Strategic  Allocation:
Moderate  (Strategic   Allocation:   Moderate)  and  Amerian  Century  Strategic
Allocation:  Aggressive  (Strategic  Allocation:  Aggressive)  (the Funds).  The
Funds'  investment  objective  is to  provide  as high a level of  total  return
(capital  appreciation  plus dividend and interest income) as is consistent with
its risk profile.  The Funds' seek to achieve this by  diversifying  investments
among  three  asset  classes  - equity  securities,  bonds  and cash  equivalent
instruments, the mix of which will depend on the risk profile of each particular
Fund. Each Fund is authorized to issue two classes of shares: the Investor class
and the Advisor  Class.  The two classes of shares differ  principally  in their
respective shareholder servicing and distribution expenses and arrangements. All
shares of each Fund  represent  an equal pro rata  interest in the assets of the
class  to  which  such  shares  belong,  and have  identical  voting,  dividend,
liquidation and other rights and the same terms and conditions, except for class
specific  expenses  and  exclusive  rights  to vote on  matters  affecting  only
individual classes. The following  significant  accounting policies,  related to
all classes of the Funds, are in accordance with accounting  policies  generally
accepted in the investment company industry.

Security  Valuations--Portfolio  securities  traded  primarily  on  a  principal
securities  exchange are valued at the last reported sales price, or the mean of
the  latest  bid and  asked  prices  where no last  sales  price  is  available.
Securities traded  over-the-counter are valued at the mean of the latest bid and
asked prices or, in the case of certain foreign securities, at the last reported
sales price,  depending on local  convention or regulation.  Debt securities not
traded on a principal securities exchange are valued through valuations obtained
from a  commercial  pricing  service  or at the mean of the most  recent bid and
asked prices.  When valuations are not readily available,  securities are valued
at fair value as determined in accordance with  procedures  adopted by the Board
of Directors.

Security  Transactions--Security  transactions  are  accounted  for on the  date
purchased  or  sold.  Net  realized  gains  and  losses  are  determined  on the
identified cost basis, which is also used for federal income tax purposes.

Investment  Income--Dividend  income less  foreign  taxes  withheld  (if any) is
recorded as of the ex-dividend date.  Interest income is recorded on the accrual
basis and includes amortization of discounts and premiums.

Foreign  Currency   Transactions--The   accounting  records  of  the  Funds  are
maintained in U.S. dollars.  All assets and liabilities  initially  expressed in
foreign currencies are converted into U.S. dollars at prevailing exchange rates.
Purchases and sales of investment securities,  dividend and interest income, and
certain  expenses  are  translated  at the rates of exchange  prevailing  on the
respective dates of such transactions.

Net  realized  foreign  currency  exchange  gains or losses  arise from sales of
foreign  currencies  and the  difference  between  asset and  liability  amounts
initially stated in foreign  currencies and the U.S. dollar value of the amounts
actually  received or paid. Net unrealized  foreign  currency  exchange gains or
losses  arise from  changes in the value of assets and  liabilities,  other than
portfolio securities, resulting from changes in the exchange rates.

Net realized and unrealized  foreign currency exchange gains or losses occurring
during the holding  period of portfolio  securities  are a component of realized
gain  (loss)  on  investments  and  unrealized  appreciation  (depreciation)  on
investments, respectively.

Forward Foreign Currency  Exchange  Contracts--The  Funds may enter into forward
foreign  currency  exchange  contracts  for the  purpose  of  settling  specific
purchases or sales of securities  denominated in a foreign  currency or to hedge
the Funds'  exposure  to  foreign  currency  exchange  rate  fluctuations.  When
required, the Funds will segregate assets in an amount sufficient to cover their
obligations  under the hedge  contracts.  The net U.S.  dollar  value of foreign
currency  underlying  all  contractual  commitments  held by the  Funds  and the
resulting  unrealized  appreciation or depreciation  are determined  daily using
prevailing exchange rates.  Forward contracts involve elements of market risk in
excess of the amount reflected in the Statements of Assets and Liabilities.  The
Funds bear the risk of an unfavorable  change in the foreign  currency  exchange
rate  underlying  the forward  contract.  Additionally,  losses may arise if the
counterparties do not perform under the contract terms.

Repurchase  Agreements--The  Funds may enter  into  repurchase  agreements  with
institutions that the Funds'  investment  manager,  American Century  Investment
Management,  Inc. (ACIM),  has determined are creditworthy  pursuant to criteria
adopted by the Board of  Directors.  Each  repurchase  agreement  is recorded at
cost.  The  Funds  require  that  the  securities   purchased  in  a  repurchase
transaction be


50   Notes to Financial Statements                  American Century Investments


                         NOTES TO FINANCIAL STATEMENTS

MAY 31, 1997 (UNAUDITED)

transferred  to the  custodian  in a manner  sufficient  to enable  the Funds to
obtain  those  securities  in  the  event  of a  default  under  the  repurchase
agreement.  ACIM  monitors,  on a  daily  basis,  the  value  of the  securities
transferred to ensure the value,  including accrued interest,  of the securities
under each repurchase  agreement is equal to or greater than amounts owed to the
Funds under each repurchase agreement.

Joint Trading  Account--Pursuant  to an Exemptive Order issued by the Securities
and  Exchange  Commission,  the Funds,  along with other  registered  investment
companies  having   management   agreements  with  ACIM  and  Benham  Management
Corporation, may transfer uninvested cash balances into a joint trading account.
These  balances  are  invested  in one or more  repurchase  agreements  that are
collateralized by U.S. Treasury or Agency obligations.

Income Tax  Status--It  is the  policy of the Funds to  distribute  all  taxable
income and capital gains to shareholders and to otherwise qualify as a regulated
investment  company under provisions of the Internal Revenue Code.  Accordingly,
no provision has been made for federal income taxes.

Distributions to Shareholders--Distributions to shareholders are recorded on the
ex-dividend date. Distributions from net investment income are declared and paid
quarterly,  with the  exception of  Strategic  Allocation:  Aggressive  which is
declared and paid annually.  Distributions  from net realized gains are declared
and paid annually.

The character of distributions  made during the year from net investment  income
or net  realized  gains may differ  from  their  ultimate  characterization  for
federal income tax purposes.  These differences are primarily due to differences
in the  recognition of income and expense items for financial  statement and tax
purposes.

Supplementary Information--Certain officers and directors of the Corporation are
also officers and/or  directors,  and, as a group,  controlling  stockholders of
American Century  Companies,  Inc., the parent of the  Corporation's  investment
manager,  ACIM,  the  Corporation's  distributor,  American  Century  Investment
Services,  Inc. (ACIS), and the Corporation's  transfer agent,  American Century
Services Corporation.

Use of  Estimates--The  preparation of financial  statements in conformity  with
generally accepted  accounting  principles requires management to make estimates
and assumptions  that affect the reported  amounts of assets and liabilities and
disclosure of  contingent  assets and  liabilities  at the date of the financial
statements,  and the reported  amounts of increases  and decreases in net assets
from operations  during the reporting  period.  Actual results could differ from
those estimates.

- --------------------------------------------------------------------------------
2. Transactions with Related Parties

The Corporation  has entered into Management  Agreements with ACIM that provides
each Fund with  investment  advisory and  management  services in exchange for a
single,  unified  management  fee per class.  The  Agreements  provide  that all
expenses of the Funds, except brokerage commissions,  taxes, interest,  expenses
of those directors who are not considered "interested persons" as defined in the
Investment  Company  Act of 1940  (including  counsel  fees)  and  extraordinary
expenses, will be paid by ACIM. The fee is computed daily and paid monthly based
on each class's average daily closing net assets during the previous month.  The
annual management fee for each class of the Funds is as follows:

<TABLE>
                                               STRATEGIC ALLOCATION:  STRATEGIC ALLOCATION: STRATEGIC ALLOCATION:
                                                   CONSERVATIVE             MODERATE             AGGRESSIVE
                                               Investor     Advisor   Investor    Advisor   Investor    Advisor
                                                 Class       Class      Class      Class      Class      Class
AVERAGE NET ASSETS
<S>   <C>                                        <C>         <C>        <C>        <C>        <C>        <C>  
First $1 billion ..............................  1.00%       0.75%      1.10%      0.85%      1.20%      0.95%
Over $1 billion ...............................  0.90%       0.65%      1.00%      0.75%      1.10%      0.85%
</TABLE>


Semiannual Report                             Notes to Financial Statements   51


                         NOTES TO FINANCIAL STATEMENTS

MAY 31, 1997 (UNAUDITED)

The Board of Directors has adopted a shareholder  services and distribution plan
for the Advisor Class,  pursuant to Rule 12b-1 of the Investment  Company Act of
1940.  The Advisor  Class Master  Distribution  and  Shareholder  Services  Plan
provides that the Funds will pay ACIM an annual  distribution fee equal to 0.25%
and service fee equal to 0.25%.  The fees are  computed  daily and paid  monthly
based on the  Advisor  Class's  average  daily  closing  net  assets  during the
previous month.  The  distribution  fee provides  compensation  for distribution
expenses  incurred in connection with  distributing  shares of the Advisor Class
including,  but not limited to,  payments to  brokers,  dealers,  and  financial
institutions  that have entered into sales agreements with ACIS and/or ACIM. The
service fee provides  compensation for shareholder and  administrative  services
rendered by ACIM,  its  affiliates or independent  third party  providers.  Fees
incurred under the Master Distribution and Shareholder  Services Plan during the
six  months   ended  May  31,  1997,   were  $9,776  in  Strategic   Allocation:
Conservative, $18,338 in Strategic Allocation: Moderate and $14,754 in Strategic
Allocation: Aggressive.

- --------------------------------------------------------------------------------
3. Investment Transactions
<TABLE>

Investment  transactions  (excluding short-term  investments) for the six months
ended May 31, 1997 were as follows:

                                               STRATEGIC ALLOCATION:  STRATEGIC ALLOCATION: STRATEGIC ALLOCATION:
                                                   CONSERVATIVE             MODERATE             AGGRESSIVE

PURCHASES
<S>                                               <C>                    <C>                  <C>        
Other Investment Securities ....................  $25,668,129            $102,731,206          $80,469,176
U.S. Government & Agency Obligations ...........   10,630,600              20,676,341            6,883,411

PROCEEDS FROM SALES
Other Investment Securities ....................  $16,740,510           $  56,081,310          $50,243,043
U.S. Government & Agency Obligations ...........    4,003,715               7,805,317            3,936,718


On May 31, 1997, the composition of unrealized  appreciation and  (depreciation)
of investment  securities based on the aggregate cost of investments for federal
income tax purposes was as follows:

                                               STRATEGIC ALLOCATION:  STRATEGIC ALLOCATION: STRATEGIC ALLOCATION:
                                                   CONSERVATIVE             MODERATE             AGGRESSIVE

Appreciation ...................................  $  2,633,025           $  10,469,758        $  8,780,500
(Depreciation) .................................      (487,264)             (1,196,600)           (797,033)
Net ............................................     2,145,761               9,273,158           7,983,467
Federal Tax Cost ...............................    53,542,689             128,398,353          82,527,208
</TABLE>


52   Notes to Financial Statements                  American Century Investments


                         NOTES TO FINANCIAL STATEMENTS

MAY 31, 1997 (UNAUDITED)

- --------------------------------------------------------------------------------
4. Capital Share Transactions

There are 50,000,000  shares of the Investor Class and 25,000,000  shares of the
Advisor Class authorized for issuance in each of the Funds. All shares are $0.01
par value. Transactions in shares of the Funds were as follows:
<TABLE>

                                                   STRATEGIC ALLOCATION:    STRATEGIC ALLOCATION:      STRATEGIC ALLOCATION:
                                                       CONSERVATIVE               MODERATE                   AGGRESSIVE

                                                   Shares       Amount       Shares      Amount         Shares        Amount

INVESTOR CLASS Six months ended May 31, 1997:
<S>                                              <C>        <C>            <C>         <C>            <C>         <C>         
Sold ..........................................  8,824,809  $ 45,634,683   17,733,307  $ 95,091,568   10,345,849  $ 56,793,166
Issued in reinvestment of distributions .......    140,691       720,598      237,805     1,256,463       61,578       333,773
Redeemed ...................................... (5,436,586)  (28,083,854)  (5,050,300)  (27,066,922)  (3,926,343)  (21,659,968)
                                                ----------   -----------   ----------   -----------   ----------   ----------- 
Net increase ..................................  3,528,914  $ 18,271,427   12,920,812  $ 69,281,109    6,481,084  $ 35,466,971
                                                 =========  ============   ==========  ============    =========  ============

INVESTOR CLASS
February 15, 1996(1) through November 30, 1996:
Sold ..........................................  7,164,621  $ 35,925,344   16,034,505  $ 81,994,470   10,377,899  $ 53,860,559
Issued in reinvestment of distributions .......     46,166       232,102       76,326       394,738         --            --
Redeemed ......................................   (914,343)   (4,590,760)  (5,434,726   (28,493,182)  (2,015,122)  (10,487,280)
                                                  --------    ----------   ----------   -----------   ----------   ----------- 
Net increase ..................................  6,296,444  $ 31,566,686   10,676,105  $ 53,896,026    8,362,777  $ 43,373,279
                                                 =========  ============   ==========  ============    =========  ============

ADVISOR CLASS Six months ended May 31, 1997:
Sold ..........................................    310,996  $  1,593,787      505,651  $  2,671,768      356,314  $  1,926,059
Issued in reinvestment of distributions .......     12,791        65,666       17,707        93,728        7,394        40,079
Redeemed ......................................   (323,335)   (1,658,583)    (582,872)   (3,084,972)    (386,050)   (2,082,111)
                                                  --------    ----------     --------    ----------     --------    ---------- 
Net increase ..................................        452  $        870      (59,514) $   (319,476)     (22,342) $   (115,973)
                                                       ===  ============      =======  ============      =======  ============ 

ADVISOR CLASS
October 2, 1996(2) through November 30, 1996:
Sold ..........................................    779,853  $  3,982,634    1,432,659  $  7,524,438    1,076,959  $  5,806,112
Redeemed ......................................    (24,199)     (124,399)     (35,636)     (190,299)     (15,600)      (84,879)
                                                   -------      --------      -------      --------      -------       ------- 
Net increase ..................................    755,654  $  3,858,235    1,397,023  $  7,334,139    1,061,359  $  5,721,233
                                                   =======  ============    =========  ============    =========  ============

(1)  Inception of the Funds.
(2)  Commencement of sale of the Advisor Class.
</TABLE>


Semiannual Report                             Notes to Financial Statements   53

<TABLE>
<CAPTION>
                              FINANCIAL HIGHLIGHTS
                       STRATEGIC ALLOCATION: CONSERVATIVE

                     For a Share Outstanding Throughout the Periods as Indicated

         Investor Class    Advisor Class
                                                                1997(1)      1996(2)      1997(1)       1996(3)

PER-SHARE DATA
Net Asset Value,
<S>                                                             <C>           <C>          <C>          <C>  
Beginning of Period ..........................................  $5.26         $5.00        $5.26        $5.09
                                                                -----         -----        -----        -----
Income From Investment Operations
  Net Investment Income(4) ...................................   0.09          0.13         0.08         0.03
  Net Realized and Unrealized Gain on
  Investment Transactions ....................................   0.06          0.22         0.06         0.14
                                                                 ----          ----         ----         ----
  Total From Investment Operations ...........................   0.15          0.35         0.14         0.17
                                                                 ----          ----         ----         ----
Distributions
  From Net Investment Income .................................  (0.08)        (0.09)       (0.07)          --
  From Net Realized Gain on Investment Transactions ..........  (0.02)           --        (0.02)          --
                                                                 ----          ----         ----         ----
  Total Distributions ........................................  (0.10)        (0.09)       (0.09)          --
                                                                 ----          ----         ----         ----
Net Asset Value, End of Period ...............................  $5.31         $5.26        $5.31        $5.26
                                                                =====         =====        =====        =====
  Total Return(5) ............................................   2.84%         7.02%        2.68%        3.34%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets(6) .....................................   1.00%        1.01%        1.25%         1.25%
Ratio of Net Investment Income
to Average Net Assets(6) .....................................   3.43%        3.67%        3.18%         3.25%
Portfolio Turnover Rate ......................................     53%          44%          53%           44%
Average Commission Paid
per Investment Security Traded ............................... $0.0330      $0.0271      $0.0330       $0.0271
Net Assets, End of Period (in thousands) ..................... $52,126      $33,110       $4,013        $3,973


(1)  Six months ended May 31, 1997 (unaudited).
(2)  February 15, 1996 (inception) through November 30, 1996.
(3)  October 2, 1996 (commencement of sale of Advisor Class) through November
     30, 1996.
(4)  Computed using average shares outstanding throughout the period.
(5)  Total return assumes reinvestment of dividends and capital gains
     distributions, if any. Total returns are not annualized.
(6)  Annualized.
</TABLE>

See Notes to Financial Statements


54   Financial Highlights                           American Century Investments

<TABLE>
<CAPTION>
                              FINANCIAL HIGHLIGHTS
                         STRATEGIC ALLOCATION: MODERATE

                     For a Share Outstanding Throughout the Periods as Indicated

                                                                  Investor Class             Advisor Class

                                                                1997(1)      1996(2)      1997(1)       1996(3)

PER-SHARE DATA
Net Asset Value,
<S>                                                             <C>           <C>          <C>          <C>  
Beginning of Period .........................................   $5.42         $5.00        $5.42        $5.24
                                                                -----         -----        -----        -----
Income From Investment Operations
  Net Investment Income(4) ..................................    0.07          0.10         0.06         0.02
  Net Realized and Unrealized Gain on
  Investment Transactions ...................................    0.15          0.39         0.15         0.16
                                                                 ----          ----         ----         ----
  Total From Investment Operations ..........................    0.22          0.49         0.21         0.18
                                                                 ----          ----         ----         ----
Distributions
  From Net Investment Income ................................   (0.07)        (0.07)       (0.06)          --
  From Net Realized Gain
  on Investment Transactions ................................   (0.01)           --        (0.01)          --
                                                                 ----          ----         ----         ----
  Total Distributions .......................................   (0.08)        (0.07)       (0.07)          --
                                                                 ----          ----         ----         ----
Net Asset Value, End of Period ..............................   $5.56         $5.42        $5.56        $5.42
                                                                =====         =====        =====        =====
  Total Return(5) ...........................................    4.06%         9.91%        3.91%        3.44%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets(6) ....................................    1.10%        1.10%        1.35%         1.35%
Ratio of Net Investment Income
to Average Net Assets(6) ....................................    2.53%        2.52%        2.28%         2.10%
Portfolio Turnover Rate .....................................      68%          78%          68%           78%
Average Commission Paid
per Investment Security Traded ..............................  $0.0264      $0.0186      $0.0264       $0.0186
Net Assets, End
of Period (in thousands) .................................... $131,246     $57,836        $7,434       $7,566

(1)  Six months ended May 31, 1997 (unaudited).
(2)  February 15, 1996 (inception) through November 30, 1996.
(3)  October 2, 1996 (commencement of sale of Advisor Class) through November
     30, 1996.
(4)  Computed using average shares outstanding throughout the period.
(5)  Total return assumes reinvestment of dividends and capital gains
     distributions, if any. Total returns are not annualized.
(6)  Annualized.
</TABLE>

See Notes to Financial Statements


Semiannual Report                                      Financial Highlights   55

<TABLE>
<CAPTION>
                              FINANCIAL HIGHLIGHTS
                        STRATEGIC ALLOCATION: AGGRESSIVE

                     For a Share Outstanding Throughout the Periods as Indicated

                                                                    Investor Class          Advisor Class
                                                                1997(1)      1996(2)      1997(1)       1996(3)

PER-SHARE DATA
Net Asset Value,
<S>                                                             <C>           <C>          <C>          <C>  
Beginning of Period .........................................   $5.53         $5.00        $5.53        $5.37
                                                                -----         -----        -----        -----
Income From Investment Operations
  Net Investment Income(4) ..................................    0.04          0.07         0.04         0.01
  Net Realized and Unrealized Gain
  on Investment Transactions ................................    0.21          0.46         0.21         0.15
                                                                 ----          ----         ----         ----
  Total From Investment Operations ..........................    0.25          0.53         0.25         0.16
                                                                 ----          ----         ----         ----
Distributions
  From Net Investment Income ................................   (0.04)           --        (0.04)          --
                                                                 ----          ----         ----         ----
Net Asset Value, End of Period ..............................   $5.74         $5.53        $5.74        $5.53
                                                                =====         =====        =====        =====
  Total Return(5) ...........................................    4.55%        10.60%        4.51%        2.98%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets(6) ....................................    1.20%        1.20%        1.45%         1.45%
Ratio of Net Investment Income
to Average Net Assets(6) ....................................    1.66%        1.72%        1.41%         1.31%
Portfolio Turnover Rate .....................................      82%          64%          82%           64%
Average Commission Paid
per Investment Security Traded ..............................  $0.0192      $0.0202      $0.0192       $0.0202
Net Assets, End of Period (in thousands) ....................  $85,242     $46,276        $5,961       $5,872


(1)  Six months ended May 31, 1997 (unaudited).
(2)  February 15, 1996 (inception) through November 30, 1996.
(3)  October 2, 1996 (commencement of sale of Advisor Class) through November
     30, 1996.
(4)  Computed using average shares outstanding throughout the period.
(5)  Total return assumes reinvestment of dividends and capital gains
     distributions, if any. Total returns are not annualized.
(6)  Annualized.
</TABLE>

See Notes to Financial Statements


56   Financial Highlights                           American Century Investments


                       SHARE CLASS AND RETIREMENT ACCOUNT
                                  INFORMATION

Share Classes

Until September 3, 1996, the Strategic Asset  Allocation  funds issued one class
of fund  shares,  reflecting  the fact that most  investors  bought their shares
directly  from American  Century.  All  investors  paid the same annual  unified
management fee and did not pay any  commissions or other fees to purchase shares
from American Century.

But increasing numbers of investors are purchasing fund shares through financial
intermediaries who are ordinarily  compensated for the additional  services they
provide. In September, American Century began to offer two classes of shares for
many of its funds,  including the Strategic Asset Allocation funds. One class is
for investors who buy directly  from American  Century,  the other for investors
who buy through financial intermediaries.

The  original  class of  Strategic  Asset  Allocation  fund shares is called the
Investor Class. All shares issued and outstanding before September 3, 1996, have
been  designated as Investor  Class shares.  Investor  Class shares may still be
purchased  after September 3, 1996.  Investor Class  shareholders do not pay any
commissions  or other fees for purchase of fund shares  directly  from  American
Century.  Investors who buy Investor Class shares through a broker-dealer may be
required to pay the  broker-dealer a transaction  fee. The price and performance
of the  Investor  Class  shares  are  listed in  newspapers.  No other  class is
currently listed.

In  addition,   there  is  an  Advisor  Class,  which  is  sold  through  banks,
broker-dealers, insurance companies and financial advisors. Advisor Class shares
are subject to a 0.50% Rule 12b-1 service and distribution fee. Half of that fee
is available to pay for recordkeeping and administrative  services,  and half is
available  to  pay  for   distribution   services   provided  by  the  financial
intermediary  through  which the Advisor Class shares are  purchased.  The total
expense ratio of the Advisor Class shares is 0.25% higher than the total expense
ratio of the Investor Class shares.

Both classes of shares  represent a pro rata interest in the funds and generally
have the same rights and preferences.

Retirement Account Information

As required by law, any distributions you receive from an IRA and certain 403(b)
distributions  [not  eligible for  rollover to an IRA or to another  403(b)] are
subject to federal income tax withholding at the rate of 10% of the total amount
withdrawn,  unless you elect not to have withholding apply. If you don't want us
to withhold  on this  amount,  you may send us a written  notice not to have the
federal  income tax withheld.  Your written  notice is valid for six months from
the date of  receipt  at  American  Century.  Even if you plan to roll  over the
amount you withdraw to another tax-deferred  account, the withholding rate still
applies to the withdrawn  amount unless we have received a written notice not to
withhold federal income tax within six months prior to the withdrawal.

When  you plan to  withdraw,  you may  make  your  election  by  completing  our
Exchange/Redemption  form or an IRS Form W-4P. Call American  Century for either
form.  Your  written  election  is valid  for only six  months  from the date of
receipt at American Century. You may revoke your election at any time by sending
a written notice to us.

Remember,  even if you elect not to have income tax withheld, you are liable for
paying income tax on the taxable portion of your withdrawal. If you elect not to
have income tax withheld or you don't have enough income tax  withheld,  you may
be responsible  for payment of estimated tax. You may incur  penalties under the
estimated  tax rules if your  withholding  and  estimated  tax  payments are not
sufficient.


Semiannual Report            Share Class and Retirement Account Information   57


                                     NOTES

58   Notes                                          American Century Investments


                                     NOTES

Semiannual Report                                                     Notes   59


                             BACKGROUND INFORMATION

Investment Philosophy & Policies

Each American  Century  Strategic Asset Allocation fund invests in a diversified
portfolio of stocks,  bonds and money market  securities,  with the objective of
achieving as high a level of total return as is consistent with the fund's asset
mix.  The funds  rely on a team  management  approach--groups  of  managers  are
responsible for the ongoing active management of the individual fund components.

Strategic Allocation:  Conservative emphasizes bonds and money market securities
to provide regular income and principal  protection.  The fund also provides the
potential for moderate  long-term growth by investing a portion of its assets in
stocks.

Strategic  Allocation:  Moderate  emphasizes  common stocks for their  long-term
growth  prospects,  but it  maintains a sizable  stake in bonds and money market
securities to provide some income and increase overall price stability.

Strategic Allocation:  Aggressive focuses primarily on common stocks as a source
of long-term growth, but it maintains a small portion of its assets in bonds and
money market  securities to help cushion the share price volatility of the stock
portion.

Comparative Indices

The following  indices are used in the report as fund  performance  comparisons.
They are not investment products available for purchase.

The S&P 500  Index is  composed  of 500  large-capitalization  stocks  traded on
domestic exchanges.  It is considered to be a broad measure of U.S. stock market
performance.

The Lehman  Aggregate  Bond Index  reflects the price  fluctuations  of Treasury
securities,  agency  securities,   corporate  bond  issues  and  mortgage-backed
securities.

The Morgan  Stanley  Europe,  Australia,  Far East  (EAFE(R))  Index is a widely
followed group of stocks from 20 different countries.

The  Salomon  Brothers   Non-U.S.   World  Government  Bond  Index  consists  of
fixed-income government bonds from 13 countries.

The  Three-Month  Treasury Bill Index is derived from secondary  market interest
rates as published by the Federal Reserve Bank.

Lipper Rankings

Lipper Analytical  Services,  Inc. is an independent mutual fund ranking service
that groups funds according to their investment  objectives.  Rankings are based
on average  annual  returns  for each fund in a given  category  for the periods
indicated.  Rankings are not included for periods less than one year. The Lipper
categories for the Strategic Allocation funds are:

     Income  Funds  (Conservative)--funds  that  normally  seek a high  level of
     current  income through  investing in  income-producing  stocks,  bonds and
     money market instruments.

     Balanced  Funds  (Moderate)--funds  whose primary  objective is to conserve
     principal  by  maintaining  a  balanced  portfolio  of  stocks  and  bonds.
     Typically, the stock/bond ratio is 60%/40%.

     Growth & Income Funds  (Aggressive)--equity  funds that  combine  growth of
     earnings  orientation  and an income  requirement  for level and/or  rising
     dividends.

THE FUNDS' NEUTRAL ASSET MIXES*
                                   CON        MOD         AGG
Stocks                             40%        60%         75%
Bonds                              45%        30%         20%
Cash (money market securities)     15%        10%          5%


PORTFOLIO MANAGEMENT TEAM
Lead Manager                   Jeff Tyler, Brian Howell
U.S. Stocks                    Phil Davidson, Glenn Fogle,
                               Peter Zuger
Foreign Stocks                 Henrik Strabo, Mark Kopinski
U.S. Bonds                     Casey Colton, Bud Hoops,
                               Jeff Houston, Dave Schroeder
Foreign Bonds                  Dave Schroeder
Money Market Securities        Denise Tabacco

* The funds'  actual  asset  mixes  will vary from the  neutral  mixes  based on
investment  performance.  Fund  managers  regularly  review the  portfolios  and
rebalance the asset mixes to stay within the funds' preset operating ranges.


60   Background Information                         American Century Investments


                                    GLOSSARY

Returns

o Total  Return  figures  show the overall  percentage  change in the value of a
hypothetical  investment  in  the  fund  and  assume  that  all  of  the  fund's
distributions are reinvested.

o Average Annual Returns  illustrate the annually  compounded returns that would
have produced the fund's cumulative total returns if the fund's  performance had
been  constant  over the  entire  period.  Average  annual  returns  smooth  out
variations  in a fund's  return;  they are not the same as  fiscal  year-by-year
results.  For  fiscal  year-by-year  returns,  please  refer  to the  "Financial
Highlights" on pages 54-56.

Stock Portfolio Statistics

o Number of  Companies--the  number of different  companies  held by a fund on a
given date.

o Dividend Yield--a  percentage return calculated by dividing a company's annual
cash dividend by the current market value of the company's stock.

o  Price/Earnings  Ratio--a  stock value  measurement  calculated  by dividing a
company's stock price by its earnings per share,  with the result expressed as a
multiple instead of a percentage.  (Earnings per share is calculated by dividing
a company's after-tax earnings by its outstanding shares.)

Bond Portfolio Statistics

o Number of Securities--the  number of different  securities held by a fund on a
given date.

o  Weighted  Average  Maturity  (WAM)--a  measurement  of the  sensitivity  of a
fixed-income  portfolio to interest rate changes. WAM indicates the average time
until the securities in the portfolio  mature,  weighted by dollar  amount.  The
longer the WAM, the more interest rate  exposure and  sensitivity  the portfolio
has.

o  Average  Duration--another  measure  of  the  sensitivity  of a  fixed-income
portfolio to interest rate changes.  Duration is a time-weighted  average of the
interest  and  principal  payments  of the  securities  in a  portfolio.  As the
duration  of a portfolio  increases,  so does the impact of a change in interest
rates on the value of the portfolio.

Fixed-Income Security Types

o Corporate  Securities--debt  securities or instruments issued by corporations.
Short-term  corporate  securities  are typically  issued to raise cash and cover
current  expenses  in  anticipation  of  future  revenues;  long-term  corporate
securities  are  issued  to  finance  capital  expenditures,  such as new  plant
construction or equipment purchases.

o Foreign Government Securities--debt securities issued or guaranteed by foreign
governments or their political subdivisions. Some of these securities are direct
obligations  of the  issuing  government;  others  are  backed  by some  form of
government sponsorship.

o Mortgage-Backed  Securities--debt securities that represent ownership in pools
of  mortgage   loans.   Most   mortgage-backed   securities  are  structured  as
"pass-throughs"--the monthly payments of principal and interest on the mortgages
in the pool are  collected by the bank that is servicing  the  mortgages and are
"passed through" to investors.  While the payments of principal and interest are
considered  secure (many are backed by government agency  guarantees),  the cash
flow is less certain than in other fixed-income investments.  Mortgages that are
paid off early reduce future interest payments from the pool.

o U.S. Government Agency  Securities--debt  securities issued by U.S. government
agencies  (such as the Federal Home Loan Bank and the Federal Farm Credit Bank).
Some  agency  securities  are  backed by the full  faith and  credit of the U.S.
government,  while others are guaranteed only by the issuing agency.  Government
agency  securities  include  discount  notes  (maturing in one year or less) and
medium-term notes, debentures and bonds (maturing in three months to 50 years).

o U.S.  Treasury  Securities--debt  securities  issued by the U.S.  Treasury and
backed by the direct  "full  faith and  credit"  pledge of the U.S.  government.
Treasury  securities  include  bills  (maturing  in one  year  or  less),  notes
(maturing in two to ten years) and bonds (maturing in more than ten years).


Semiannual Report                                                  Glossary   61

[american century logo]
American
Century(sm)

P.O. Box 419200
Kansas City, Missouri
64141-6200

Investor Services:
1-800-345-2021 or 816-531-5575

Automated Information Line:
1-800-345-8765

Telecommunications Device for the Deaf:
1-800-634-4113 or 816-444-3485

Fax: 816-340-7962

Internet: www.americancentury.com


AMERICAN CENTURY STRATEGIC ASSET ALLOCATIONS, INC.

Investment Manager
American Century Investment Management, Inc.


This  report and the  statements  it  contains  are  submitted  for the  general
information of our  shareholders.  The report is not authorized for distribution
to  prospective  investors  unless  preceded  or  accompanied  by  an  effective
prospectus.

American Century Investment Services, Inc.


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