AMERICAN CENTURY MUTUAL FUNDS INC
N-30D, 1999-06-21
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[front cover]

APRIL 30, 1999

SEMIANNUAL REPORT

AMERICAN CENTURY

[graphic of stairs]

ULTRA(reg.sm)

VISTA

                                                 [american century logo(reg.sm)]
                                                                        American
                                                                         Century



[inside front cover]

Y2K TESTING EFFORTS PAY DIVIDENDS IN PREPAREDNESS
- --------------------------------------------------------------------------------

Y2K, short for the year 2000,  refers more  specifically to the date change from
December  31,  1999 to January  1, 2000.  This date  change is  significant  for
computers  because  many  were  originally  programmed  to  process  dates  with
two-character years -- 99 instead of 1999.

When the  calendar  rolls  to  2000,  this can  create  problems  for  computers
programmed  this way because they will read the date as "00," and may  interpret
it as 1900. Most companies have been working to reprogram their computer systems
with  four-digit  years.  Reprogramming  is very  labor-intensive  and  requires
testing  to ensure  that  there  are no  errors  and that all lines of code were
successfully changed.

Recognizing  the possible  impact of the Y2K issue,  our  senior-level  Steering
Committee,  programmers,  business  partners  and Y2K  team  have  been  working
diligently to make January 1, 2000 a non-event for American Century investors.

Currently,  all of our computer systems have been modified,  tested and returned
to  production.  We have an ongoing  commitment  to testing our systems with our
vendors and business partners and within the industry throughout the rest of the
year.

In March  and April of this  year,  we  participated  in the  Security  Industry
Association's (SIA) industry-wide test and successfully  processed  transactions
for dates up to and beyond 2000. American Century  transactions with our partner
firms were processed free of Y2K bugs. We also  participated  in the Market Data
Test conducted by the SIA and Financial  Information  Forum in May.  Again,  the
computer scripts were executed successfully with no Y2K-related errors.

In addition  to our testing  schedule,  our Y2K team has  developed  contingency
plans.  These  plans  will  minimize  the  impact on our  investors  and help us
maintain operations in the event of any Y2K-related  incidents.  We will conduct
practice  drills of  contingency  scenarios  during  the rest of 1999 and refine
those  plans to respond  quickly and  effectively  so that the date change is as
seamless as possible  for  investors.  We expect the year 2000 to be business as
usual at American Century.

Year 2000 Readiness Disclosure

MINIMIZE YOUR MUTUAL FUND TAX HIT

    American  Century's newest equity fund,  Tax-Managed  Value, is designed for
    long-term  growth and to  minimize  the tax hit you take on your mutual fund
    investments each year. The fund is managed to keep taxable  distributions to
    a minimum by using the following strategies:

    * BUY AND HOLD --Low portfolio  turnover helps limit realized  capital gains
      and takes advantage of long-term capital gains tax rates.

    * OFFSET GAINS --When gains are realized in the  portfolio,  they are offset
      with  capital  losses  from  securities  sold in that tax  year or  losses
      carried over from previous years.

    * SELL  HIGHER-COST  SHARES FIRST --Selling  shares that cost the most first
      helps minimize the taxable gains incurred from a sale.

Ultra is a registered service mark of American Century Services Corporation.

[left margin]

ULTRA
(TWCUX)

VISTA
 (TWCVX)

TURN TO THE  INSIDE  BACK  COVER  OF  THIS  REPORT  TO SEE A LIST  OF THE  FUNDS
CLASSIFIED BY OBJECTIVE AND RISK.




Our Message to You
- --------------------------------------------------------------------------------

[photo of James E. Stowers III and James E. Stowers, Jr.]
James E. Stowers III, seated, with James E. Stowers, Jr.

     These are unusual  times in the equity  markets.  The first half of Ultra's
and Vista's  fiscal  years,  both ended April 30,  1999,  was marked by dramatic
shifts in market sentiment.  Much of the time a few large, popular growth stocks
continued  to  flourish,  while  almost  anything  smaller  --  unless it was an
Internet-related  company  -- was  caught  in the  market's  crosscurrents.  The
performance  of  mid-cap  stocks  came in bursts,  one as the  period  began and
another as it ended.

     Ultra  continued to  distinguish  itself by generating  better returns than
both  its  peer  group  and its  benchmark,  as you  will  see in the  portfolio
managers' discussion.  Vista's results also improved,  but the fund continued to
fight the negative psychology that has impeded the performance of mid-cap stocks
for several years. Although mid-caps fared better in the first half of the year,
pessimism  about  mid-cap  investing  is still  alive and well.  We remain  firm
believers that mid-cap stocks will return to favor.

     At American  Century,  our focus  continues to be on making it easier to do
business with us and on helping investors reach their financial goals. In March,
we  consolidated  all our funds under the American  Century name. We believe the
American Century nameplate makes it simpler for you to identify your funds.

     We  have  also  reclassified  our  entire  family  of 71  funds,  based  on
investment  goals and risk levels,  so you can more easily choose the funds that
are right for you. A complete list of American Century funds,  arranged by their
new classifications, is on the inside back cover of this report.

     We also continued to expand the American Century investment team, which has
doubled over the last three years.  Our portfolio  teams have  excellent  depth,
with an array of experienced  managers and analysts,  and we remain committed to
building and maintaining a talented management group.

     Finally, we redesigned and enhanced our Web site,  www.americancentury.com.
There you'll find daily fund information,  including performance and price data,
market and national news,  and a Forms Center with access to the  most-requested
investor  forms  and  applications.  You  can  also  sign  up  to  receive  fund
prospectuses and shareholder reports electronically.

     As always, we appreciate your continued confidence in American Century.

Sincerely,

/s/James E. Stowers, Jr.                   /s/James E. Stowers III
James E. Stowers, Jr.                      James E. Stowers III
Chairman of the Board and Founder          Vice Chairman of the Board
                                           and Chief Executive Officer

[right margin]

Table of Contents

   Report Highlights ......................................................    2
   Market Perspective .....................................................    3
ULTRA
   Performance ............................................................    4
   Management Q&A .........................................................    5
   Portfolio at a Glance ..................................................    5
   Top Ten Holdings .......................................................    6
   Top Five Industries ....................................................    6
   Types of Investments ...................................................    7
   Schedule of Investments ................................................    8
   Financial Highlights ...................................................   25
VISTA
   Performance ............................................................   12
   Management Q&A .........................................................   13
   Portfolio at a Glance ..................................................   13
   Top Ten Holdings .......................................................   14
   Top Five Industries ....................................................   14
   Types of Investments ...................................................   15
   Schedule of Investments ................................................   16
   Financial Highlights ...................................................   28
FINANCIAL STATEMENTS
   Statements of Assets and Liabilities ...................................   18
   Statements of Operations ...............................................   19
   Statements of Changes in Net Assets ....................................   20
   Notes to Financial Statements ..........................................   21
OTHER INFORMATION
   Share Class and Retirement Account Information .........................   31
   Background Information
      Investment Philosophy and Policies ..................................   32
      Comparative Indices .................................................   32
      Portfolio Managers ..................................................   32
   Glossary ...............................................................   33


                                                  www.americancentury.com     1




Report Highlights
- --------------------------------------------------------------------------------

MARKET PERSPECTIVE

* The six-month period was marked by dramatic shifts in market  sentiment.  Much
  of the time,  the market  was led by a small  group of large,  popular  growth
  stocks. Investors, uncertain about the strength of the economy moving forward,
  sought firms with predictable  earnings.  Meanwhile,  the performance of small
  stocks came in short bursts, one as the period began, another as it ended.

* All  three  growth  stock  categories  -- small,  midsize  and large -- posted
  double-digit returns during the six-month period.

* The Federal Reserve's lowering of short-term  interest rates last fall sparked
  rallies at both ends of the market,  but the move was  short-lived for smaller
  stocks.  In April,  value stocks and those of large industrial  companies shot
  up, as the Dow Jones Industrial Average gained more than 10% during the month,
  compared  to a 3.79%  increase  in the S&P 500  Index.  The  Russell  2000,  a
  small-cap  index,  was up almost 9% during April as investors  recognized  the
  attractive valuations of small and midsized firms.

ULTRA

* Ultra significantly  outpaced the S&P 500 Index for the six months ended April
  30, 1999, as the fund's largest holdings turned in some of its best results.

* Ultra   continued   to   rely   on   its   largest   industry   weighting   --
  telecommunications firms -- which account for almost 14% of the portfolio, for
  solid  gains.  MCI  WorldCom,   the  fund's  second-largest   holding,   fared
  particularly well.  Positions in Internet-related  companies,  such as America
  Online,  the  fund's  top-performing  stock,  and  Time  Warner,  also led the
  portfolio.

* Ultra's double-digit weighting in pharmaceutical  companies performed somewhat
  below expectations as investors sought  faster-growing  technology  companies.
  The fund was also  somewhat  light in financial  stocks,  a part of the market
  that  declined last fall,  but then ended up  performing  better than expected
  over the six months.

VISTA

* Vista posted a strong gain over the six-month  period,  the best half-year for
  the fund in more than three years. Vista's performance, which slightly trailed
  that of its  benchmark,  was the result of a number of steps taken recently to
  improve results.

* Vista's exposure to a broader group of industries has been increased.  We have
  fine-tuned  our  database  with the goal of finding  companies  earlier in the
  growth cycle before their  potential has been  recognized by other  investors,
  putting us in position to capture more of their price gains.

* Vista  looked  to  three  major  industries  for  its  returns  --  electronic
  components,  communications  equipment,  and computer  software and  services.
  Firms in those sectors represented more than one-third of assets.

* Among the best  performers  were two  Internet  stocks,  At Home  Network,  an
  Internet access service transmitted over cable, and Excite, an Internet access
  portal.  With  Internet  usage   skyrocketing,   and  with  it  the  need  for
  high-capacity  communications  pipelines,  Vista  significantly  increased its
  weightings  in companies  making the next  generation  of computer  chips that
  store and transmit data.

[left margin]

                  ULTRA(1)
                  (TWCUX)
TOTAL RETURNS:             AS OF 4/30/99
    6 Months                      29.76%(2)
    1 Year                        25.52%
INCEPTION DATE:                  11/2/81
NET ASSETS:                $33.9 billion(3)

                  VISTA(1)
                  (TWCVX)
TOTAL RETURNS:             AS OF 4/30/99
    6 Months                      23.19%(2)
    1 Year                       -15.78%
INCEPTION DATE:                 11/25/83
NET ASSETS:               $886.0 million(3)

(1)  Investor Class.
(2)  Not annualized.
(3)  Includes Investor, Advisor, and Institutional classes.

Investment terms are defined in the Glossary on pages 33-34.


2     1-800-345-2021




Market Perspective from James E. Stowers III
- --------------------------------------------------------------------------------

[photo of James E. Stowers III]
James E. Stowers III, Chief Executive Officer of American Century

MARKET PERFORMANCE WAS BROADER

      The chart in the lower right corner of this page, Market Performance, will
show you at a glance how stocks  behaved over the  six-month  period ended April
30,  1999.  The  returns  of all three  stock  categories--small,  midsize,  and
large--were  squarely in double digits.  That in itself is impressive.  Over the
past  several  years it has been far more  typical for the stocks of midsize and
small companies to lag, often by substantial margins, those of larger companies,
and especially those of the very largest multinational companies.

THE FEDERAL RESERVE STEPS IN

     As you may recall,  in  September  1998,  the  financial  markets were less
tranquil.  Many were in crisis until the Federal Reserve Board (the U.S. central
bank) stepped in and  stabilized the situation by lowering  short-term  interest
rates. The strategy worked and smaller stocks rallied. Large stocks moved higher
too,  led by  technology  and  Internet-related  companies,  but smaller  stocks
appeared  to fall  back into  familiar  patterns--greater  volatility  and lower
returns. In early spring, however, this changed noticeably.

THE S&P 500 SLOWS

     In April,  value stocks and the stocks of large  manufacturers  such as Dow
Chemical and Caterpillar shot up. The Dow Jones Industrial Average jumped 10.25%
in April,  trouncing  the S&P 500's 3.79% gain.  The S&P 400, the midsize  stock
benchmark,  also came out ahead, up 3.93% for the month, while the Russell 2000,
a small-cap index,  rose 8.96%. The S&P 500/BARRA Value Index, a popular measure
of value stocks, leapt 8.62%, posting one of its best performances in years.

     Several  factors  contributed  to the change in market  dynamics.  For one,
market  leadership  had  remained   unusually   narrow,   with  size  the  chief
differential in performance.

     As a result, big growth companies became  increasingly  expensive,  and the
fear grew that any reversion to normal performance could be costly. A perception
also arose,  as the economy  continued to grow,  that perhaps the economic cycle
wasn't ending but instead was beginning anew,  kicking off another growth cycle.
Given that forecast, economically sensitive companies (the industrials) were the
likely beneficiaries.

     It's too early to tell  whether  this  scenario  will prove  true,  but the
perception sparked an unusually robust short-term reaction.

GOOD BUSINESSES, GOOD STOCKS

     At American  Century,  we try hard not to  overreact to  short-term  market
developments.  Our focus is on helping  shareholders  build their  capital  over
time. We do that by owning the best  businesses  available,  particularly  those
with  accelerating  rates of  earnings  growth,  no matter  which  sector of the
economy they represent.

[right margin]

"OVER THE PAST  SEVERAL  YEARS IT HAS BEEN FAR MORE  TYPICAL  FOR THE  STOCKS OF
MIDSIZE AND SMALL  COMPANIES  TO LAG,  OFTEN BY  SUBSTANTIAL  MARGINS,  THOSE OF
LARGER  COMPANIES,  AND  ESPECIALLY  THOSE  OF THE  VERY  LARGEST  MULTINATIONAL
COMPANIES."

MARKET RETURNS
FOR THE SIX MONTHS ENDED APRIL 30, 1999
S&P 500                                    22.31%
S&P MIDCAP 400                             18.86%
RUSSELL 2000                               15.16%

Source: Lipper Inc.

These   indices    represent   the   performance   of   large-,    medium-   and
small-capitalization stocks.

[chart data shown below]

MARKET PERFORMANCE (GROWTH OF $1.00)
FOR THE SIX MONTHS ENDED APRIL 30, 1999

            S&P 500      S&P Mid-Cap 400   Russell 2000
10/31/98     $1.00            $1.00            $1.00
11/30/98     $1.06            $1.05            $1.05
12/31/98     $1.12            $1.18            $1.12
 1/31/99     $1.17            $1.13            $1.13
 2/28/99     $1.13            $1.07            $1.04
 3/31/99     $1.18            $1.10            $1.06
 4/30/99     $1.22            $1.19            $1.15

Value on 4/30/99
S&P 500  $1.22
S&P MidCap 400  $1.19
Russell 2000  $1.15


                                                   www.americancentury.com     3




Ultra--Performance
- ------------------------------------------------------------------------

TOTAL RETURNS AS OF APRIL 30, 1999

                INVESTOR CLASS        ADVISOR CLASS         INSTITUTIONAL CLASS
               (INCEPTION 11/2/81)   (INCEPTION 10/2/96)   (INCEPTION 11/14/96)
                ULTRA    S&P 500      ULTRA    S&P 500      ULTRA    S&P 500

6 MONTHS*       29.76%   22.31%       29.62%   22.31%       29.91%   22.31%
1 YEAR          25.52%   21.80%       25.21%   21.80%       25.79%   21.80%

AVERAGE ANNUAL RETURNS

3 YEARS         24.75%   29.04%          --       --            --       --
5 YEARS         22.97%   26.82%          --       --            --       --
10 YEARS        22.22%   18.77%          --       --            --       --
LIFE OF FUND    19.04%   18.34%        26.11%   30.95%        26.00%   29.53%

* Returns for periods less than one year are not annualized.

See pages 31-34 for  information  about share  classes,  the S&P 500 Index,  and
returns.

[chart data shown below]

GROWTH OF $10,000 OVER 10 YEARS

             Ultra      S&P 500
Date         Value       Value
4/30/89     $10,000     $10,000
4/30/90     $10,058     $11,052
4/30/91     $15,742     $12,995
4/30/92     $18,948     $14,814
4/30/93     $21,838     $16,180
4/30/94     $26,463     $17,039
4/30/95     $28,107     $20,011
4/30/96     $38,343     $26,050
4/30/97     $42,442     $32,594
4/30/98     $59,313     $45,977
4/30/99     $74,447     $55,922

Value on 4/30/99
Ultra  $74,447
S&P 500  $55,922


The graph at left shows the growth of a $10,000  investment  in the fund over 10
years, while the chart below shows the fund's year-by-year performance.  The S&P
500 Index is provided  for  comparison  in each  graph.  Ultra's  total  returns
include operating  expenses (such as transaction costs and management fees) that
reduce returns,  while the total returns of the S&P 500 Index do not. The graphs
are based on Investor Class shares only; performance for other classes will vary
due to differences in fee structures  (see the Total Returns table above).  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.

[chart data shown below]

ONE-YEAR RETURNS OVER 10 YEARS (PERIODS ENDING APRIL 30)

            Ultra       S&P 500
Date        Return      Return
4/30/90      0.58%      10.44%
4/30/91     56.51%      17.56%
4/30/92     20.37%      14.05%
4/30/93     15.25%       9.22%
4/30/94     21.18%       5.33%
4/30/95      6.21%      17.42%
4/30/96     36.42%      30.13%
4/30/97     10.69%      25.10%
4/30/98     39.75%      41.01%
4/30/99     25.52%      21.80%


4     1-800-345-2021




Ultra--Q&A
- ------------------------------------------------------------------------

[photo of John Sykora, Jim Stowers III and Bruce Wimberly]
John Sykora, Jim Stowers III and Bruce Wimberly, portfolio managers on the Ultra
investment team

     An  interview  with Jim  Stowers  III,  John  Sykora  and  Bruce  Wimberly,
portfolio managers on the Ultra investment team.


HOW DID THE FUND PERFORM FOR THE SIX-MONTH PERIOD ENDED APRIL 30, 1999? (1)

     Ultra turned in strong results.  It gained 29.76% over the six months, well
above the 22.31%  increase  posted by the  Standard  & Poor's  500  Index.  That
performance  landed  Ultra in the top 20% of its peer group  (189th out of 1,115
growth funds) for the six-month period, according to Lipper Inc.(2)

     Ultra is in an enviable position,  with its largest holdings turning in the
best results.  Maintaining large positions in successful companies is a hallmark
of our  earnings-based  investment  approach.  The  fund's 10  largest  holdings
accounted for about 40% of assets,  and seven of its best  contributors  were on
that short list.

WHICH COMPANIES OR SECTORS CONTRIBUTED TO PERFORMANCE?

     As was the case six months ago,  America Online (AOL), the nation's largest
online  service,  was  Ultra's top  contributor.  The stock,  our  third-largest
holding  at about 5% of the fund,  gained a  stunning  349%.  AOL's  membership,
usage, and advertising revenues continue to climb.

     Our other top  contributors  haven't  changed  much from our last report to
you. Ultra's positions in  telecommunications  companies,  the major carriers of
Internet   traffic,   continued  to  post  strong  gains.   MCI  WorldCom,   our
second-largest  holding,  fared  extremely  well.  Revenues  from  its  Internet
business  rose 60% in the first  quarter of 1999.  This  company  provides  many
needed services -- voice, data,  Internet,  and international  traffic.  In many
cases,  it can  transport  these  communications  almost  anywhere  in the world
without  leaving  its  own  network,   a  significant   competitive   advantage.
Telecommunications  companies  account  for  almost  12% of our  portfolio,  our
largest industry weighting. This is a high-confidence sector for us.

     Time  Warner,  another  top-10  holding,  saw its shares climb 50% over the
six-month period, as investors recognized the leadership position the company is
taking in the cable TV, entertainment,  and publishing  industries.  A number of
positive trends are at work in the cable industry,  including  emerging consumer
demand for digital cable services that should bode well for future growth.  This
is also an industry with true pricing power. Time Warner has invested heavily to
expand the capacity of its cable network,  and in doing so has positioned itself
well. Over the next few years,  capital  spending on its cable plant is going to
decline at the same time  revenues  from  value-added  services  such as digital
cable and video-on-demand are rising.

(1) All fund returns referenced in this interview are for Investor Class shares.
(2)  According  to Lipper for the periods  ending April 30, Ultra was ranked 189
out of  1,035,  in the top 19% for one  year;  128 out of 391,  top 33% for five
years;  and 4 out of 171,  top 3% for 10  years.  Lipper  rankings  are based on
average  annual  total  returns.  Past  performance  is no  guarantee  of future
results.

[right margin]

"ULTRA IS IN AN ENVIABLE POSITION, WITH ITS LARGEST HOLDINGS TURNING IN THE BEST
RESULTS."

PORTFOLIO AT A GLANCE
                        4/30/99          10/31/98
NO. OF COMPANIES          192               193
MEDIAN P/E RATIO         33.9              32.0
MEDIAN MARKET           $19.7             $17.4
  CAPITALIZATION        BILLION           BILLION
PORTFOLIO TURNOVER        17%(1)           128%(2)
EXPENSE RATIO (FOR
  INVESTOR CLASS)       1.00%(3)          1.00%

(1)  Six months ended 4/30/99.
(2)  Year ended 10/31/98.
(3)  Annualized.

Investment terms are defined in the Glossary on pages 33-34.


                                                   www.americancentury.com     5




Ultra--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

     Cable networks have the capacity to carry large amounts of voice,  data and
video to the home; we feel they are the communications  pipelines of the future.
As a result,  we're seeing  front-page  stories  about  marriages  between cable
companies  and other  businesses  that want  direct  access to  millions of U.S.
households. This very situation was played out during the period with one of our
largest and best-performing  holdings,  Tele-Communications,  Inc. AT&T acquired
this  nationwide  cable TV provider  in March,  instantly  making the  telephone
company the largest owner of cable homes.  AT&T clearly intends to be a dominant
player in the delivery of communications  services via cable. The company is now
one of Ultra's larger holdings.

     Our   optimism  in  a  leading   financial   services   company,   American
International  Group,  also paid off. AIG, a premier  international  provider of
insurance  products,  benefited  from a flight to quality by financial  services
consumers  in Asia and  emerging  markets.  We took  advantage  of  share  price
weakness  in  financial  companies  last fall and added to our  position in AIG.
During the period, AIG completed its purchase of SunAmerica,  an industry leader
in  variable  annuity   products--and  a  great  fit.  The  acquisition  extends
SunAmerica's reach into international markets, particularly in Asia.

PHARMACEUTICAL  COMPANIES REPRESENTED YOUR SECOND-LARGEST  WEIGHTING,  YET THEIR
PERFORMANCE  WAS SOMEWHAT  SLUGGISH.  IS THIS STILL A  HIGH-CONFIDENCE  AREA FOR
ULTRA?

     We didn't get the boost we'd hoped for from our  double-digit  weighting in
pharmaceuticals.  The big,  household-name  drug  companies were the darlings of
1998 as investors  sought  safety amid concerns  about the economy.  Thus far in
1999,  however,  with the economy  continuing to hum, investors have been giving
drug stocks a breather while they turn to faster-growing  technology  companies.
In  addition,  we've begun to see more  head-to-head  competition  between  drug
companies as various drugs come off patents,  a potential  pressure on earnings.
Just the same, we think this sector has plenty of long-term promise. Pfizer is a
good example of the type of pharmaceutical  company we want to own. Its pipeline
of new drugs is strong.  Pfizer makes Viagra and is co-marketing a new arthritis
medication called Celebrex.

WHICH STOCKS OR SECTORS HURT PERFORMANCE?

     If we had it to do  over  again,  we  would  have  held  our  positions  in
financial stocks -- firms such as Chase Manhattan,  CitiGroup and BankAmerica --
when  their  shares  declined  last fall as a result  of  financial  turmoil  in
emerging markets. We

[left margin]

TOP TEN HOLDINGS
                       % OF FUND INVESTMENTS
                       AS OF      AS OF
                       4/30/99    10/31/98
MICROSOFT CORP.        5.3%       4.3%
MCI WORLDCOM, INC.     5.1%       4.5%
AMERICA ONLINE INC.    4.9%       1.8%
AMERICAN
   INTERNATIONAL
   GROUP, INC.         4.7%       3.5%
TIME WARNER INC.       4.3%       3.4%
AT&T CORP.             4.0%         0%(1)
GENERAL ELECTRIC CO.
   (U.S.)              3.4%       3.5%
PFIZER, INC.           2.6%       3.0%
COCA-COLA COMPANY
   (THE)               2.6%       1.3%
AT&T CORP. -
   LIBERTY MEDIA
   GROUP CL A          2.5%       1.0%(2)

TOP FIVE INDUSTRIES
                       % OF FUND INVESTMENTS
                       AS OF      AS OF
                       4/30/99    10/31/98
TELEPHONE
   COMMUNICATIONS     11.7%      10.6%(3)
PHARMACEUTICALS       11.7%      15.4%
COMPUTER SOFTWARE
   & SERVICES         11.1%       6.5%
BROADCASTING &
   MEDIA               8.9%       9.1%(3)
DIVERSIFIED
   COMPANIES           6.3%       6.0%

(1)  AT&T  was held at  10/31/98,  but it  represented  less  than  0.05% of the
     investments.
(2)  Represents  Liberty Media Group shares owned by the fund.
(3)  Percentages   have   been   adjusted   to   reflect    security    industry
     reclassification.


6     1-800-345-2021




Ultra--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

sharply  reduced our positions,  only to see the stocks rally shortly after rate
cuts by the Federal  Reserve.  As a result,  we were somewhat light in a part of
the market that ended up performing well.

WHAT CHANGES HAVE YOU MADE TO THE PORTFOLIO SINCE THE ANNUAL REPORT?

     We sold Ultra's stake in Philip  Morris.  Continuing  lawsuits  (some going
against the cigarette  companies),  coupled with uncertainty about future growth
in U.S.  and  overseas  markets,  have raised the risk  associated  with tobacco
shares.

     We also  closed  out  holdings  in  several  energy  companies,  among them
Chevron,  Exxon and Royal  Dutch  Petroleum,  which  accounted  for almost 4% of
assets at the start of the period.  These  companies had been steady  performers
during a period of economic uncertainty. But as the economy continued its strong
pace into this year, we sought out faster-growing businesses.

     The growing use of local  advertising  via the  Internet  led us to rethink
small  holdings in newspaper  companies,  including  the New York Times and News
Corp. Ltd. We lightened up on those stocks as well.

WHAT'S YOUR STRATEGY AND OUTLOOK FOR ULTRA GOING FORWARD?

     The  investment  approach  that drives  Ultra is simple,  disciplined,  and
powerful.  We think the best  place  for your  money  over time is in  decidedly
successful  businesses.  Our radar  screens are  designed to flag firms that are
doing  better  this  quarter  than the  previous  one and the one  before  that;
companies whose businesses are growing -- today. As you examine our investments,
we think you'll see some common  characteristics among the companies Ultra owns.
We look for smart,  well-run,  highly  profitable  businesses,  leaders in their
respective industries,  firms with pricing power, and growing market share. That
thinking  has rewarded  investors in Ultra over the years,  and we think it will
continue to do so in the future.

[right margin]

"WE LOOK FOR SMART, WELL-RUN, HIGHLY PROFITABLE BUSINESSES . . ."

[pie chart data shown below]

TYPES OF INVESTMENTS IN THE PORTFOLIO

AS OF APRIL 30, 1999
U.S. Stocks                        97.8%
Temporary Cash Investments          1.3%
Foreign & U.S. Preferred Stock      0.5%
Foreign Stocks                      0.4%

AS OF OCTOBER 31, 1998
U.S. Stocks                        94.1%
Temporary Cash Investments          3.3%
Foreign & U.S. Preferred Stock      1.0%
Foreign Stocks                      1.6%


                                                   www.americancentury.com     7




Ultra--Schedule of Investments
- --------------------------------------------------------------------------------

APRIL 30, 1999 (UNAUDITED)

Shares                     ($ in Thousands)                               Value
- --------------------------------------------------------------------------------
COMMON STOCKS -- 98.2%

AEROSPACE & DEFENSE -- 0.2%
      20,000  General Dynamics Corp.                            $         1,405
      10,000  Textron Inc.                                                  921
     445,000  United Technologies Corp.                                  64,469
                                                                      ----------
                                                                         66,795
                                                                      ----------
AIRLINES(1)
      30,000  Southwest Airlines Co.                                        977
                                                                      ----------
AUTOMOBILES & AUTO PARTS(1)
     100,000  Ford Motor Co.                                              6,394
      45,000  General Motors Corp.                                        4,002
                                                                      ----------
                                                                         10,396
                                                                      ----------
BANKING -- 2.9%
      20,000  BB&T Corp.                                                    799
   9,590,000  Bank of New York Co., Inc. (The)                          383,600
     115,000  BankAmerica Corp.                                           8,280
      30,000  BankBoston Corp.                                            1,470
   1,475,000  Chase Manhattan Corp.                                     122,056
   2,805,000  Citigroup Inc.                                            211,076
      20,000  Fifth Third Bancorp                                         1,433
      40,000  Firstar Corp.                                               1,203
      20,000  Huntington Bancshares Inc.                                    708
     715,000  Mellon Bank Corp.                                          53,133
     228,171  Northern Trust Corp.                                       21,206
   4,285,000  Wells Fargo & Co.                                         185,058
                                                                      ----------
                                                                        990,022
                                                                      ----------
BIOTECHNOLOGY -- 0.1%
     240,000  Amgen Inc.(2)                                              14,737
      10,000  Biogen, Inc.(2)                                               951
       5,000  Immunex Corp.(2)                                              477
                                                                      ----------
                                                                         16,165
                                                                      ----------
BROADCASTING & MEDIA -- 8.9%
  13,362,200  AT&T Corp. -- Liberty Media Group Cl A(2)                 853,511
      70,000  CBS Corporation(2)                                          3,189
   1,480,300  Clear Channel Communications, Inc.(2)                     102,881
   8,020,000  Comcast Corp. Cl A                                        526,814
      15,000  Cox Communications, Inc. Cl A(2)                            1,191
     350,000  Jacor Communications, Inc.(2)                              28,066
  21,022,200  Time Warner Inc.                                        1,471,554
   1,400,000  USA Networks Inc.(2)                                       52,325
                                                                      ----------
                                                                      3,039,531
                                                                      ----------
BUSINESS SERVICES & SUPPLIES(1)
      30,000  Omnicom Group Inc.                                          2,175
      30,000  Paychex, Inc.                                               1,530
                                                                      ----------
                                                                          3,705
                                                                      ----------

Shares                     ($ in Thousands)                               Value
- --------------------------------------------------------------------------------
CHEMICALS & RESINS(1)
      15,000  Dow Chemical Co.                                   $        1,968
      60,000  du Pont (E.I.) de Nemours & Co.                             4,238
      15,000  Rohm and Haas Co.                                             672
                                                                      ----------
                                                                          6,878
                                                                      ----------
COMMUNICATIONS EQUIPMENT -- 2.5%
      30,000  ADC Telecommunications, Inc.(2)                             1,438
      30,000  Ascend Communications, Inc.(2)                              2,897
      15,000  Corning Inc.                                                  859
   3,765,000  Lucent Technologies Inc.                                  226,371
   6,585,000  MediaOne Group Inc.(2)                                    537,089
      40,000  Motorola, Inc.                                              3,205
     355,000  QUALCOMM Inc.(2)                                           70,878
                                                                      ----------
                                                                        842,737
                                                                      ----------
COMPUTER PERIPHERALS -- 4.1%
   4,942,000  Cisco Systems Inc.(2)                                     563,851
   7,700,000  EMC Corp. (Mass.)(2)                                      838,819
                                                                      ----------
                                                                      1,402,670
                                                                      ----------
COMPUTER SOFTWARE & SERVICES -- 11.1%
  11,588,400  America Online Inc.                                     1,654,244
      35,000  Automatic Data Processing, Inc.                             1,557
      10,000  BMC Software, Inc.(2)                                         430
   3,835,200  Compuware Corp.(2)                                         93,363
     515,000  First Data Corp.                                           21,855
   4,562,200  IMS Health Inc.                                           136,866
  22,189,600  Microsoft Corp.(2)                                      1,803,598
     372,500  Oracle Systems Corp.(2)                                    10,081
     435,000  Siebel Systems, Inc.(2)                                    16,734
      15,000  Unisys Corp.(2)                                               472
     210,000  Veritas Software Corp.(2)                                  14,963
     125,000  Yahoo! Inc.(2)                                             21,828
                                                                      ----------
                                                                      3,775,991
                                                                      ----------
COMPUTER SYSTEMS -- 3.5%
   9,187,200  Dell Computer Corp.(2)                                    378,111
   3,456,200  International Business Machines Corp.                     722,994
   1,305,000  Sun Microsystems, Inc.(2)                                  78,096
                                                                      ----------
                                                                      1,179,201
                                                                      ----------
CONSUMER PRODUCTS -- 3.9%
      10,000  Avon Products, Inc.                                           543
   1,244,000  Colgate-Palmolive Co.                                     127,432
      10,000  Estee Lauder Companies, Inc.                                1,001
  11,040,000  Gillette Company                                          576,150
   6,543,200  Procter & Gamble Co. (The)                                613,834
      10,000  Ralston Purina Co.                                            305
                                                                      ----------
                                                                      1,319,265
                                                                      ----------

                                              See Notes to Financial Statements


8     1-800-345-2021




Ultra--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)

APRIL 30, 1999 (UNAUDITED)

Shares                     ($ in Thousands)                               Value
- --------------------------------------------------------------------------------
DIVERSIFIED COMPANIES -- 6.3%
       5,691  Berkshire Hathaway Inc. Cl A(2)                      $    434,792
       2,006  Berkshire Hathaway Inc. Cl B(2)                             4,955
  10,937,500  General Electric Co. (U.S.)                             1,153,906
      10,000  Honeywell Inc.                                                948
      20,000  Minnesota Mining & Manufacturing Co.                        1,780
   6,918,060  Tyco International Ltd.                                   562,092
                                                                      ----------
                                                                      2,158,473
                                                                      ----------
ELECTRICAL & ELECTRONIC COMPONENTS -- 3.7%
      20,000  Altera Corp.(2)                                             1,447
      10,000  Eaton Corp.                                                   917
  11,612,000  Intel Corp.                                               710,146
     460,000  KLA-Tencor Corporation(2)                                  22,770
   1,998,600  Linear Technology Corp.                                   113,795
   1,985,000  Maxim Integrated Products, Inc.(2)                        111,532
      10,000  Rockwell International Corp.                                  516
     621,000  Solectron Corp.(2)                                         30,119
   2,102,700  Texas Instruments Inc.                                    214,738
     820,000  Xilinx, Inc.(2)                                            37,515
                                                                      ----------
                                                                      1,243,495
                                                                      ----------
ENERGY -- 1.2%
   5,318,000  Enron Corp.                                               400,180
                                                                      ----------
ENERGY (PRODUCTION & MARKETING)(1)
     125,000  American Power Conversion Corp.(2)                          4,121
      20,000  Atlantic Richfield Co.                                      1,679
      15,000  Mobil Corp.                                                 1,571
      10,000  Phillips Petroleum Co.                                        506
      15,000  Unocal Corp.                                                  623
                                                                      ----------
                                                                          8,500
                                                                      ----------
ENVIRONMENTAL SERVICES -- 2.3%
  13,671,422  Waste Management, Inc.                                    772,435
                                                                      ----------
FINANCIAL SERVICES -- 4.4%
   1,754,200  American Express Co.                                      229,252
       5,000  Ameritrade Holding Corp. Cl A(2)                              669
     467,832  Associates First Capital Corp.                             20,731
      15,000  Capital One Financial Corp.                                 2,605
      10,000  Donaldson, Lufkin & Jenrette, Inc.                            699
      20,000  Equitable Companies Inc.                                    1,346
   8,766,400  Fannie Mae                                                621,867
   7,505,500  Federal Home Loan Mortgage Corporation                    470,970
      35,000  Household International, Inc.                               1,761
       7,000  Kansas City Southern Industries, Inc.                         417
       4,000  Knight/Trimark Group, Inc. Cl A(2)                            614
      20,000  Merrill Lynch & Co., Inc.                                   1,679
     665,000  Morgan Stanley Dean Witter, Discover & Co.                 65,960
      25,000  Paine Webber Group, Inc.                                    1,173
     996,400  Price (T. Rowe) Associates, Inc.                           37,583
      10,500  Providian Financial Corp.                                   1,355

Shares                     ($ in Thousands)                               Value
- --------------------------------------------------------------------------------
      85,000  Schwab (Charles) Corp.                             $        9,329
     375,000  State Street Corp.                                         32,813
      30,000  Washington Mutual, Inc.                                     1,234
                                                                      ----------
                                                                      1,502,057
                                                                      ----------
FOOD & BEVERAGE -- 3.6%
      35,000  Anheuser-Busch Companies, Inc.                              2,559
       5,000  Bestfoods                                                     251
  13,061,700  Coca-Cola Company (The)                                   888,196
   4,350,000  Coca-Cola Enterprises, Inc.                               150,075
      15,000  Kellogg Co.                                                   555
   4,505,000  PepsiCo, Inc.                                             166,403
      10,000  Quaker Oats Co. (The)                                         646
                                                                      ----------
                                                                      1,208,685
                                                                      ----------
HEALTHCARE(1)
      10,000  Aetna Inc.                                                    877
                                                                      ----------
INDUSTRIAL EQUIPMENT & MACHINERY(1)
      20,000  Dover Corp.                                                   739
                                                                      ----------
INSURANCE -- 4.7%
      30,000  AFLAC Inc.                                                  1,627
  13,495,325  American International Group, Inc.                      1,584,857
      15,000  Marsh & McLennan Companies, Inc.                            1,148
                                                                      ----------
                                                                      1,587,632
                                                                      ----------
LEISURE -- 1.4%
      85,000  Carnival Corp. Cl A                                         3,506
   1,500,000  Disney (Walt) Co.                                          47,625
      20,000  Eastman Kodak Co.                                           1,493
      10,000  Harley-Davidson, Inc.                                         596
     236,000  Viacom, Inc. Cl A(2)                                        9,573
  10,468,000  Viacom, Inc. Cl B(2)                                      427,880
                                                                      ----------
                                                                        490,673
                                                                      ----------
MACHINERY & EQUIPMENT -- 0.1%
     625,000  Applied Materials, Inc.(2)                                 33,496
      10,000  Danaher Corp.                                                 664
                                                                      ----------
                                                                         34,160
                                                                      ----------
MEDICAL EQUIPMENT & SUPPLIES -- 2.1%
      30,000  Boston Scientific Corp.(2)                                  1,277
   2,880,000  Guidant Corp.                                             154,620
   7,866,700  Medtronic, Inc.                                           565,911
                                                                      ----------
                                                                        721,808
                                                                      ----------
OFFICE EQUIPMENT & SUPPLIES(1)
      25,000  Avery Dennison Corp.                                        1,706
      20,000  Pitney Bowes Inc.                                           1,399
                                                                      ----------
                                                                          3,105
                                                                      ----------
PAPER & FOREST PRODUCTS(1)
      15,000  Georgia-Pacific Corp.                                       1,388
      40,000  Kimberly-Clark Corp.                                        2,453
      25,000  Weyerhaeuser Co.                                            1,678
                                                                      ----------
                                                                          5,519
                                                                      ----------

See Notes to Financial Statements


                                                   www.americancentury.com     9




Ultra--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)

APRIL 30, 1999 (UNAUDITED)

Shares                     ($ in Thousands)                               Value
- --------------------------------------------------------------------------------
PERSONAL SERVICES -- 0.4%
   2,575,000  Block (H&R), Inc.                                    $    123,922
                                                                      ----------
PHARMACEUTICALS -- 11.7%
     120,000  Abbott Laboratories                                         5,812
      10,000  Allergan, Inc.                                                899
   3,378,300  American Home Products Corp.                              206,076
   8,841,800  Bristol-Myers Squibb Co.                                  562,007
   1,034,300  Elan Corp., plc ADR(2)                                     53,266
      10,000  Genentech, Inc.(2)                                            846
   4,868,000  Johnson & Johnson                                         474,630
   4,142,000  Lilly (Eli) & Co.                                         304,955
   9,505,800  Merck & Co., Inc.                                         667,782
   7,720,500  Pfizer, Inc.                                              888,340
   1,050,000  Pharmacia & Upjohn Inc.                                    58,800
   7,408,400  Schering-Plough Corp.                                     357,918
   5,644,900  Warner-Lambert Co.                                        383,500
                                                                      ----------
                                                                      3,964,831
                                                                      ----------
PRINTING & PUBLISHING(1)
      15,000  Tribune Co.                                                 1,252
                                                                      ----------
RAILROAD(1)
      15,000  CSX Corp.                                                     739
      30,000  Union Pacific Corp.                                         1,800
                                                                      ----------
                                                                          2,539
                                                                      ----------
RESTAURANTS -- 0.6%
   5,055,000  McDonald's Corp.                                          214,206
                                                                      ----------
RETAIL (APPAREL) -- 0.1%
      80,000  Abercrombie & Fitch Co. Cl A(2)                             7,610
     110,000  Gap, Inc. (The)                                             7,322
      20,000  Intimate Brands, Inc.                                       1,000
      30,000  Limited, Inc. (The)                                         1,313
                                                                      ----------
                                                                         17,245
                                                                      ----------
RETAIL (FOOD & DRUG) -- 0.7%
       5,000  Albertson's, Inc.                                             257
      20,000  CVS Corp.                                                     952
   3,425,000  Safeway Inc.(2)                                           184,736
      20,000  SYSCO Corp.                                                   594
   2,245,000  Walgreen Co.                                               60,334
                                                                      ----------
                                                                        246,873
                                                                      ----------
RETAIL (GENERAL MERCHANDISE) -- 2.7%
   1,929,000  Costco Companies, Inc.(2)                                 156,068
   1,394,500  Dayton Hudson Corp.                                        93,867
      15,000  Federated Department Stores, Inc.(2)                          700
      10,000  Kohl's Corp.(2)                                               664
  14,290,600  Wal-Mart Stores, Inc.                                     657,368
                                                                      ----------
                                                                        908,667
                                                                      ----------

Shares                     ($ in Thousands)                               Value
- --------------------------------------------------------------------------------
RETAIL (INTERNET)(1)
      30,000  Amazon.com, Inc.(2)                               $         5,161
      10,000  eBay Inc.(2)                                                2,081
                                                                      ----------
                                                                          7,242
                                                                      ----------
RETAIL (SPECIALTY) -- 1.1%
     465,000  Best Buy Co., Inc.(2)                                      22,204
   5,831,000  Home Depot, Inc.                                          349,496
      20,000  Lowe's Companies, Inc.                                      1,055
     150,000  Staples, Inc.(2)                                            4,505
       6,000  Tandy Corp.                                                   435
                                                                      ----------
                                                                        377,695
                                                                      ----------
TELEPHONE COMMUNICATIONS -- 11.7%
  27,078,810  AT&T Cor                                                1,367,480
       5,000  ALLTEL Corp.                                                  337
   2,427,800  Ameritech Corp.                                           166,153
   2,649,800  BellSouth Corp.                                           118,579
      10,000  Frontier Corp.                                                552
      25,000  Global Crossing Holdings Ltd.(2)                            1,356
  21,095,374  MCI WorldCom, Inc.(2)                                   1,733,117
      35,000  Qwest Communications International Inc.(2)                  2,989
  10,720,000  SBC Communications Inc.                                   600,320
      35,000  Sprint Corp.                                                3,590
                                                                      ----------
                                                                      3,994,473
                                                                      ----------
TEXTILES & APPAREL(1)
      35,000  NIKE, Inc.                                                  2,177
                                                                      ----------
TRANSPORTATION(1)
       7,000  Hertz Corp. Cl A                                              418
                                                                      ----------
UTILITIES(1)
      10,000  Dominion Resources, Inc. (Va.)                                411
      10,000  PECO Energy Co.                                               474
                                                                      ----------
                                                                            885
                                                                      ----------
WIRELESS COMMUNICATIONS -- 2.2%
   6,881,000  AirTouch Communications, Inc.(2)                          642,513
     540,000  Nokia Corp. ADR Cl A                                       40,061
      69,800  Vodafone Group plc ADR                                     12,520
   3,527,000  Vodafone Group plc ORD                                     64,948
                                                                      ----------
                                                                        760,042
                                                                      ----------
TOTAL COMMON STOCKS                                                  33,415,138
   (Cost $19,976,078)                                                 ----------

                                              See Notes to Financial Statements


10     1-800-345-2021




Ultra--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)

APRIL 30, 1999 (UNAUDITED)

Shares                     ($ in Thousands)                               Value
- --------------------------------------------------------------------------------
PREFERRED STOCKS -- 0.5%

PRINTING & PUBLISHING
   5,217,000  News Corp. Ltd. ADR                                  $    159,445
   (Cost $96,137)                                                     ----------

TEMPORARY CASH INVESTMENTS -- 1.3%
    $101,000  FHLB Discount Notes, 4.89%, 5/3/99(3)                     101,000
Repurchase Agreement, BA Security Services, Inc.
  (U.S. Treasury obligations), in a joint trading account
  at 4.80%, dated 4/30/99, due 5/3/99 (Delivery
  value $154,362)                                                       154,300
Repurchase Agreement, Merrill Lynch & Co., Inc.
  (U.S. Treasury obligations), in a joint trading account
  at 4.80%, dated 4/30/99, due 5/3/99 (Delivery
  value $200,980)                                                       200,900
                                                                      ----------
TOTAL TEMPORARY CASH INVESTMENTS                                        456,200
   (Cost $456,173)                                                    ----------

TOTAL INVESTMENT SECURITIES -- 100.0%                               $34,030,783
   (Cost $20,528,388)                                               ============

FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS
                ($ in Thousands)
   Contracts       Settlement            Unrealized
    to Sell           Date       Value      Gain
56,425,135 EURO     5/28/99     $59,770     $355
                               ====================
(Value on Settlement Date $60,125)

Forward foreign currency exchange contracts are used by the portfolio management
team in an effort to protect  foreign  investments  against  declines in foreign
currencies.  This is also known as hedging.  The contracts are called  "forward"
because they allow your fund to exchange a foreign  currency for U.S. dollars at
a date in the future --and at a price  (known as the exchange  rate) agreed upon
when the contract is initially entered into.

NOTES TO  SCHEDULE  OF  INVESTMENTS  ADR = American  Depositary  Receipt  FHLB =
Federal Home Loan Bank ORD = Foreign Ordinary Share
(1)  Industry is less than 0.05% of total investment securities.
(2)  Non-income producing.
(3)  Rate disclosed is the yield to maturity at purchase.

UNDERSTANDING  THE  SCHEDULE  OF  INVESTMENTS--This  schedule  shows  you  which
investments your fund owned on the last day of the reporting period.
The schedule includes:
* a list of each investment
* the number of shares of each stock
* the market value of each investment
* the percentage of total investments in each industry
* the percent and dollar breakdown of each investment category

See Notes to Financial Statements


                                                 www.americancentury.com     11




Vista--Performance
- --------------------------------------------------------------------------------

TOTAL RETURNS AS OF APRIL 30, 1999

              INVESTOR CLASS          ADVISOR CLASS          INSTITUTIONAL CLASS
             (INCEPTION 11/25/83)    (INCEPTION 10/2/96)    (INCEPTION 11/14/96)
                     RUSSELL 2500            RUSSELL 2500           RUSSELL 2500
              VISTA  GROWTH INDEX     VISTA  GROWTH INDEX    VISTA  GROWTH INDEX
6 MONTHS(1)   23.19%    25.46%        22.97%    25.46%       23.39%    25.46%
1 YEAR       -15.78%    -1.79%       -15.99%    -1.79%      -15.50%    -1.79%

AVERAGE ANNUAL RETURNS

3 YEARS      -6.71%      8.36%         --         --           --         --
5 YEARS       7.77%     14.62%         --         --           --         --
10 YEARS      9.68%     13.01%         --         --           --         --
LIFE OF FUND 10.33%     N/A(2)        -9.33%     9.89%(3)    -6.67%    10.41%(4)

(1)  Returns for periods less than one year are not annualized.
(2)  Benchmark began 1/1/86.
(3)  Since 9/30/96, the date nearest the class's inception for which data are
     available.
(4)  Since 11/30/96,  the date nearest the class's  inception for which data are
     available.

See pages 31-34 for  information  about share  classes,  the Russell 2500 Growth
Index, and returns.

[chart data shown below]

GROWTH OF $10,000 OVER 10 YEARS

             Vista       Russell 2500 Growth
Date         Value       Value
4/30/89     $10,000     $10,000
4/30/90     $11,507     $10,384
4/30/91     $13,178     $12,134
4/30/92     $15,497     $14,047
4/30/93     $16,029     $15,015
4/30/94     $17,346     $17,174
4/30/95     $21,069     $19,182
4/30/96     $31,060     $26,699
4/30/97     $23,742     $24,836
4/30/98     $29,946     $34,589
4/30/99     $25,216     $33,969

Value on 4/30/99
Russell 2500 Growth  $33,969
Vista  $25,216

The graph at left shows the growth of a $10,000  investment  in the fund over 10
years,  while the chart below  shows the fund's  year-by-year  performance.  The
Russell  2500 Growth  Index is provided for  comparison  in each graph.  Vista's
total  returns  include  operating  expenses  (such  as  transaction  costs  and
management  fees) that reduce  returns,  while the total  returns of the Russell
2500 Growth  Index do not.  The graphs are based on Investor  Class shares only;
performance  for other classes will vary due to  differences  in fee  structures
(see the Total Returns table above).  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.

[chart data shown below]

ONE-YEAR RETURNS OVER 10 YEARS (PERIODS ENDING APRIL 30)

            Vista     Russell 2500 Growth
Date        Return    Return
4/30/90     15.07     3.84
4/30/91     14.52    16.85
4/30/92     17.60    15.77
4/30/93      3.43     6.89
4/30/94      8.22    14.38
4/30/95     21.46    11.69
4/30/96     47.42    39.19
4/30/97    -23.56    -6.98
4/30/98     26.13    39.27
4/30/99    -15.78    -1.79


12     1-800-345-2021




Vista--Q&A
- --------------------------------------------------------------------------------

[photo of Arnie Douville and Glenn Fogle]
Arnie Douville and Glenn Fogle, portfolio managers on the Vista investment team

     An interview with Glenn Fogle and Arnie Douville, portfolio managers on the
American Century Vista investment team.

HOW DID VISTA PERFORM DURING THE FIRST SIX MONTHS OF ITS FISCAL YEAR?*

     Vista gained 23.19% for the six months ended April 30, 1999. Its benchmark,
the Russell 2500 Growth Index, was up 25.46%. This represents the best six-month
period for the fund in over three years.

WHAT HELPED VISTA ACHIEVE THIS PERFORMANCE?

     In our last report to you,  we  discussed  several  steps we were taking to
improve Vista's  performance.  We have fine-tuned our proprietary  database that
tracks the 2,000 growth  companies in Vista's  mid-cap  universe to help us find
more  companies  at the  "sweet  spot" -- that  moment  when  earnings  are just
beginning to accelerate.  In addition, our information systems are examining and
measuring  our stock  selections  and  industry  weightings  against key mid-cap
benchmarks  to help enable  Vista to continue to perform more in line with other
funds in its asset class. This should not be construed as any sort of "indexing"
effort,  but as a check on the  construction  of our  portfolio.  Next,  we have
increased  Vista's exposure to a broader group of industries and sectors.  Vista
will still lean  toward the  fastest-growing  sectors of the  economy -- many of
them  high  technology  in nature -- but we also want to make sure that we don't
overlook other sectors experiencing good performance.

     Another  important  step has been to improve our timing.  We're  seeking to
purchase companies earlier in their growth cycle before their potential has been
widely recognized by the market, putting us in position to capture more of their
price gains.

WHICH SECTORS OR STOCKS CONTRIBUTED TO VISTA'S RESULTS?

     The biggest contributors to the fund's performance, and among the strongest
areas  in the  market  as a  whole,  were  companies  involved  in  three  major
industries -- electric and electronic components,  communications equipment, and
computer  software and services.  Together,  firms in those sectors  account for
more than a third of Vista's assets.

     The  Internet  has been a major  growth  driver for all kinds of  high-tech
firms,  whether  they're in the  equipment end of the business or on the content
side. Our best Internet  stocks  included one of our largest  holdings,  At Home
Corp.,  an  Internet  access  service  transmitted  over cable,  and Excite,  an
Internet access portal that At Home acquired during the period.  As of March 31,
1999,  At Home had 460,000  cable modem  subscribers  across North  America,  an
increase of 413% from 90,000  subscribers a year earlier.  The stock gained 225%
during the six months.

* All fund returns referenced in this interview are for Investor Class shares.

[right margin]

"THIS REPRESENTS THE BEST SIX-MONTH PERIOD FOR THE FUND IN OVER THREE YEARS."

PORTFOLIO AT A GLANCE
                        4/30/99         10/31/98
NO. OF COMPANIES          70                83
MEDIAN P/E RATIO          31.5             28.4
MEDIAN MARKET            $3.87            $3.24
  CAPITALIZATION        BILLION          BILLION
PORTFOLIO TURNOVER        123%(1)          229%(2)
EXPENSE RATIO (FOR
  INVESTOR CLASS)        1.00%(3)         1.00%

(1)  Six months ended 4/30/99.
(2)  Year ended 10/31/98.
(3)  Annualized.

Investment terms are defined in the Glossary on pages 33-34.


                                                 www.americancentury.com     13




Vista--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

     Other companies  benefiting  indirectly  from the Internet  phenomenon were
Ascend  Communications,  which provides  components  for the  telecommunications
backbone  of  the  Internet,   and  Uniphase,  a  manufacturer  of  fiber  optic
telecommunications  equipment and laser systems.  Ascend  supplies data switches
for Internet  access  providers and carriers,  and has agreed to be purchased by
Lucent  Technologies  in an all-stock deal worth $20 billion.  We sold the stock
near the end of the period  because  the market  value of the  combined  company
would exceed our capitalization requirements.

WHAT ELSE BESIDES TECHNOLOGY ISSUES BENEFITED THE FUND?

     There  were  positive   contributions   among  the  top  10  holdings  from
non-technology  industries such as financial services and retail. Our investment
in  consumer  lender  Providian  Financial  Corp.  is a result  of the fact that
consumers  continue  to spend  more than they save.  Credit  card  issuers  like
Providian are benefiting  from customers  carrying higher  balances,  as well as
increased sales of fee-based services and other types of loans.

     AnnTaylor Stores was a turnaround story in 1998 after experiencing  several
years of disappointing  sales. The clothing chain refreshed its merchandise last
year and recovered its core base of upscale consumers. Improved customer service
and marketing  programs also helped  attract  younger women.  AnnTaylor's  share
price rose 64% over the six months.

WHAT WERE SOME INVESTMENT DECISIONS THAT HURT PERFORMANCE?

     Our  holdings in computer  wholesalers  did not  perform as  expected.  CHS
Electronics  and Micro  Warehouse were both squeezed by a drop in overall demand
for  personal  computers,  and the fact  that more  consumers  are  electing  to
purchase computers directly from manufacturers like Dell Computer.  CHS was also
hurt by economic slowdowns in Europe and Latin America.

     Biotech  company  Protein  Design  Labs  was  another  disappointment.  PDL
licenses its technology to other biotech  companies.  Over the period,  however,
investors seemed to favor larger biotech companies with new blockbuster drugs.

WHAT CHANGES DID YOU MAKE IN THE PORTFOLIO DURING THE SIX MONTHS?

     We significantly  increased our investments in companies making  electronic
components (primarily computer chips) and communications  equipment.  Xilinx and
Altera are two of our newer holdings in the electronic  components  field.  They
are  both  leading  suppliers  of  programmable  logic  chips  that  are sold to
electronic equipment  manufacturers in computer systems,  telecommunications and
industrial markets.

     Qualcomm is a new holding in the communications equipment area. The company
owns critical technology and patents for CDMA, the dominant wireless technology.
We bought it when it became  apparent  that the  industry  would  adopt a single
worldwide standard incorporating Qualcomm's patents.

TOP TEN HOLDINGS
                       % OF FUND INVESTMENTS
                       AS OF         AS OF
                       4/30/99       10/31/98
UNIPHASE CORP.         5.1%          2.2%
QUALCOMM INC.          4.3%           --
ANNTAYLOR STORES
   CORP.               3.1%          2.3%
AT HOME CORP.
   SERIES A            2.9%          1.4%
CAPITAL ONE
   FINANCIAL CORP.     2.8%           --
FOODMAKER, INC.        2.8%          1.9%
ZIONS
   BANCORPORATION      2.6%          1.1%
NEWBRIDGE
   NETWORKS CORP.      2.6%           --
ECHOSTAR
   COMMUNICATIONS
   CORP.               2.6%           --
UNITED INTERNATIONAL
   HOLDINGS, INC.      2.5%           --

TOP FIVE INDUSTRIES
                       % OF FUND INVESTMENTS
                       AS OF         AS OF
                       4/30/99       10/31/98
ELECTRICAL &
   ELECTRONIC
   COMPONENTS          16.7%         2.7%
COMMUNICATIONS
   EQUIPMENT           10.4%         4.0%
BROADCASTING &
   MEDIA                8.8%          --
COMPUTER SOFTWARE
   & SERVICES           7.1%         7.1%
FINANCIAL SERVICES      6.9%         0.9%


14     1-800-345-2021




Vista--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

     We sold  most of our  electric  utility  stocks,  which  comprised  Vista's
largest  industry  group -- 12.5% of the fund -- at the start of the period.  We
had been  attracted to these  stocks  because  they were  experiencing  earnings
acceleration as a result of deregulation  and a sustained period of low interest
rates.  Many of them had been excellent  contributors  to our results.  But with
growing  uncertainty about the future direction of interest rates, we redeployed
the money in stronger growth stories.

     We increased our holdings in media and broadcasting companies to over 8% of
the fund. We don't own any of the big,  well-known  U.S. cable  companies;  they
exceed our  market  capitalization  guidelines.  We do own  international  cable
companies such as NTL and United International  Holdings. UIH is a cable company
based in Denver that owns cable systems in Europe,  Australia and Latin America.
NTL is a cable operator in the United Kingdom which also provides  telephone and
Internet services to its subscribers.

WHAT IS YOUR OUTLOOK FOR VISTA?

     Vista's  performance  and  that of its  peers  shows  that  more  and  more
investors are noticing the attractive  prices of mid-cap growth stocks.  We hope
that sentiment will continue.  A risk we will have to contend with along the way
is the possibility of rising  interest rates as the Federal Reserve  attempts to
keep inflation in check.  Higher  interest rates  threaten  corporate  earnings,
particularly  those of small-  and  medium-sized  firms  that might not have the
breadth of products or the  financial  war chests to ride out periods of slowing
business conditions.  In such an environment,  however,  when growth stories are
relatively   scarce,   our  investment   approach  of  finding   companies  with
accelerating  growth can be an advantage as investors are willing to pay more of
a premium for solidly growing companies.

[right margin]

"VISTA'S PERFORMANCE AND THAT OF ITS PEERS SHOWS THAT MORE AND MORE INVESTORS
ARE NOTICING THE ATTRACTIVE PRICES OF MID-CAP GROWTH STOCKS."

[pie chart data shown below]

TYPES OF INVESTMENTS IN THE PORTFOLIO

AS OF APRIL 30, 1999
U.S. Stocks                96.1%
Temporary Cash Investments  2.9%
Foreign Stocks              1.0%

AS OF OCTOBER 31, 1998
U.S. Stocks                90.0%
Temporary Cash Investments  9.5%
Foreign Stocks              0.5%


                                                 www.americancentury.com     15




Vista--Schedule of Investments
- --------------------------------------------------------------------------------

APRIL 30, 1999 (UNAUDITED)

Shares                     ($ in Thousands)                               Value
- --------------------------------------------------------------------------------
COMMON STOCKS -- 97.1%

AUTOMOBILES & AUTO PARTS -- 2.7%
     200,000  Cooper Tire and Rubber Company                         $    4,388
     255,000  Johnson Controls, Inc.                                     18,599
                                                                      ----------
                                                                         22,987
                                                                      ----------
BANKING -- 3.7%
     280,000  UnionBanCal Corp.                                           9,608
     335,000  Zions Bancorporation                                       22,351
                                                                      ----------
                                                                         31,959
                                                                      ----------
BIOTECHNOLOGY -- 1.9%
     175,000  MedImmune, Inc.(1)                                          9,652
     400,000  Protein Design Labs, Inc.(1)                                6,188
                                                                      ----------
                                                                         15,840
                                                                      ----------
BROADCASTING & MEDIA -- 8.8%
     220,000  EchoStar Communications Corp. Cl A(1)                      22,075
     240,000  NTL Inc.(1)                                                18,292
     200,000  RCN Corp.(1)                                                9,662
      90,000  Telewest Communications plc ADR(1)                          4,163
     360,000  United International Holdings, Inc. Cl A(1)                21,488
                                                                      ----------
                                                                         75,680
                                                                      ----------
BUSINESS SERVICES & SUPPLIES -- 5.3%
     435,000  CSG Systems International, Inc.(1)                         16,883
     275,000  Quanta Services, Inc.(1)                                    7,923
     390,000  Quintiles Transnational Corp.(1)                           15,832
      80,000  Valassis Communications, Inc.(1)                            4,480
                                                                      ----------
                                                                         45,118
                                                                      ----------
COMMUNICATIONS EQUIPMENT -- 10.4%
     750,000  ANTEC Corp.(1)                                             20,414
     275,000  FORE Systems, Inc.(1)                                       9,264
     600,000  Newbridge Networks Corp.(1)                                22,350
     185,900  QUALCOMM Inc.(1)                                           37,116
                                                                      ----------
                                                                         89,144
                                                                      ----------
COMPUTER PERIPHERALS -- 1.1%
     335,000  Seagate Technology, Inc.(1)                                 9,338
                                                                      ----------
COMPUTER SOFTWARE & SERVICES -- 7.1%
     170,000  At Home Corp. Series A(1)                                  24,474
     850,000  Mentor Graphics Corp.(1)                                   10,333
     750,000  Novell, Inc.(1)                                            16,664
     100,000  Synopsys, Inc.(1)                                           4,744
      60,000  Veritas Software Corp.(1)                                   4,275
                                                                      ----------
                                                                         60,490
                                                                      ----------

Shares                     ($ in Thousands)                               Value
- --------------------------------------------------------------------------------
ELECTRICAL & ELECTRONIC
COMPONENTS -- 16.7%
     190,000  ASM Lithography Holding N.V. New York Shares(1)        $    7,422
      60,000  Broadcom Corp. Cl A(1)                                      4,631
     180,000  KLA-Tencor Corporation(1)                                   8,910
     215,000  Micron Technology, Inc.(1)                                  7,982
      50,000  PMC-Sierra, Inc.(1)                                         4,797
      75,000  Qlogic Corp.(1)                                             5,250
     210,000  Sanmina Corp.(1)                                           13,926
     210,000  Sawtek Inc.(1)                                              7,481
     175,000  Taiwan Semiconductor Manufacturing Co. Ltd. ADR(1)          4,200
     325,000  Teradyne, Inc.(1)                                          15,336
     360,000  Uniphase Corp.(1)                                          43,628
     420,000  Xilinx, Inc.(1)                                            19,215
                                                                      ----------
                                                                        142,778
                                                                      ----------
FINANCIAL SERVICES -- 6.9%
      90,000  Bear Stearns Companies Inc.                                 4,196
     140,000  Capital One Financial Corp.                                24,316
      70,000  Lehman Brothers Holdings Inc.                               3,889
     165,000  Providian Financial Corp.                                  21,295
      50,000  TeleBanc Financial Corp.(1)                                 5,175
                                                                      ----------
                                                                         58,871
                                                                      ----------
HEALTHCARE -- 1.0%
     540,000  Apria Healthcare Group Inc.(1)                              8,438
                                                                      ----------
LEISURE -- 3.2%
     550,000  Circus Circus Enterprises, Inc.(1)                         11,584
     470,000  Mirage Resorts, Inc.(1)                                    10,546
     450,000  Park Place Entertainment Corp.(1)                           4,866
                                                                      ----------
                                                                         26,996
                                                                      ----------
MACHINERY & EQUIPMENT -- 0.6%
     140,000  Case Corp.                                                  4,848
                                                                      ----------
MEDICAL EQUIPMENT & SUPPLIES -- 3.3%
     455,000  Boston Scientific Corp.(1)                                 19,366
      70,000  VISX, Inc.(1)                                               9,015
                                                                      ----------
                                                                         28,381
                                                                      ----------
OFFICE EQUIPMENT -- 1.4%
     250,000  Electronics for Imaging, Inc.(1)                           11,820
                                                                      ----------
PAPER & FOREST PRODUCTS -- 2.3%
     100,000  Georgia-Pacific Corp.                                       9,250
      70,000  Weyerhaeuser Co.                                            4,699
     115,000  Willamette Industries, Inc.                                 5,376
                                                                      ----------
                                                                         19,325
                                                                      ----------
PERSONAL SERVICES -- 1.2%
     269,000  Sunrise Assisted Living, Inc.(1)                           10,659
                                                                      ----------

                                              See Notes to Financial Statements


16     1-800-345-2021




Vista--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)

APRIL 30, 1999 (UNAUDITED)

Shares                     ($ in Thousands)                               Value
- --------------------------------------------------------------------------------
PHARMACEUTICALS -- 1.6%
     300,000  Forest Laboratories, Inc.(1)                            $  13,350
                                                                      ----------
RESTAURANTS -- 3.5%
     225,000  Brinker International, Inc.(1)                              6,216
   1,000,000  Foodmaker, Inc.(1)                                         24,125
                                                                      ----------
                                                                         30,341
                                                                      ----------
RETAIL (APPAREL) -- 3.1%
     560,000  AnnTaylor Stores Corp.(1)                                  26,600
                                                                      ----------
RETAIL (GENERAL MERCHANDISE) -- 1.1%
     140,000  Ames Department Stores, Inc.(1)                             4,896
     145,000  ShopKo Stores, Inc.(1)                                      4,975
                                                                      ----------
                                                                          9,871
                                                                      ----------
RETAIL (SPECIALTY) -- 4.9%
      80,000  Best Buy Co., Inc.(1)                                       3,820
     285,000  Circuit City Stores-Circuit City Group                     17,527
      38,600  O'Reilly Automotive, Inc.(1)                                1,785
     500,000  Starbucks Corp.(1)                                         18,484
                                                                      ----------
                                                                         41,616
                                                                      ----------
TELEPHONE COMMUNICATIONS -- 1.6%
      50,000  Aliant Communications, Inc.                                 2,208
     100,000  ALLTEL Corp.                                                6,744
     150,000  Intermedia Communications Inc.(1)                           4,833
                                                                      ----------
                                                                         13,785
                                                                      ----------

Shares                     ($ in Thousands)                               Value
- --------------------------------------------------------------------------------
UTILITIES -- 2.1%
     240,000  Montana Power Co.                                       $  17,895
                                                                      ----------
WIRELESS COMMUNICATIONS -- 1.6%
     115,000  Nextel Communications, Inc.(1)                              4,704
     225,000  Western Wireless Corp. Cl A(1)                              9,211
                                                                      ----------
                                                                         13,915
                                                                      ----------
TOTAL COMMON STOCKS                                                     830,045
   (Cost $647,750)                                                    ----------

TEMPORARY CASH INVESTMENTS -- 2.9%
Repurchase Agreement, Morgan Stanley Group, Inc.,
   (U.S. Treasury obligations), in a joint trading
   account at 4.84%, dated 4/30/99, due 5/3/99
   (Delivery value $25,010)                                              25,000
   (Cost $25,000)                                                     ----------
TOTAL INVESTMENT SECURITIES -- 100.0%                                  $855,045
   (Cost $672,750)                                                    ==========

NOTES  TO  SCHEDULE  OF  INVESTMENTS  ADR  =  American  Depositary  Receipt  (1)
Non-income producing.

UNDERSTANDING  THE  SCHEDULE  OF  INVESTMENTS--This  schedule  shows  you  which
investments your fund owned on the last day of the reporting period.

The schedule includes:

* a list of each investment

* the number of shares of each stock

* the market value of each investment

* the percentage of total investments in each industry

* the percent and dollar breakdown of each investment category

See Notes to Financial Statements
                                                 www.americancentury.com     17

<TABLE>
<CAPTION>
Statements of Assets and Liabilities

APRIL 30, 1999
(UNAUDITED)                                                   ULTRA                VISTA
- ----------------------------------------------------------------------------------------
ASSETS                                   (In Thousands Except Per-Share Amounts)
<S>                                                           <C>                 <C>
Investment securities, at value
  (identified cost of $20,528,388 and
   $672,750, respectively) (Note 3) ................$     34,030,783    $        855,045
Cash ...............................................          48,334                --
Receivable for investments sold ....................          48,083              42,907
Receivable for forward foreign currency
  exchange contracts ...............................             355                --
Dividends and interest receivable ..................          22,127                  99
                                                    ----------------    ----------------
                                                          34,149,682             898,051
                                                    ----------------    ----------------
LIABILITIES

Disbursements in excess of
demand deposit cash ................................            --                 3,126
Payable for investments purchased ..................         208,081               8,163
Payable for capital shares redeemed ................            --                     1
Accrued management fees (Note 2) ...................          28,329                 739
Distribution fees payable (Note 2) .................              38                   1
Service fees payable (Note 2) ......................              38                   1
Payable for directors' fees and expenses ...........              31                   1
Other liabilities ..................................              18                   3
                                                    ----------------    ----------------
                                                             236,535              12,035
                                                    ----------------    ----------------
Net Assets .........................................$     33,913,147    $        886,016
                                                    ================    ================

NET ASSETS CONSIST
OF:

Capital (par value and paid in surplus) ............$     20,222,369    $        695,134
Net investment loss ................................         (43,526)             (1,789)
Accumulated undistributed net realized gain
  on investment and foreign currency transactions ..         231,554              10,376
Net unrealized appreciation on investments
  and translation of assets and liabilities in
  foreign currencies (Note 3) ......................      13,502,750             182,295
                                                    ----------------    ----------------
                                                    $     33,913,147    $        886,016
                                                    ================    ================

Investor Class, $0.01 Par Value
($ and shares in full)
Net assets .........................................$ 33,691,588,289    $    880,626,946
Shares outstanding .................................     918,937,017          77,083,327
Net asset value per share ..........................$          36.66    $          11.42
Advisor Class, $0.01 Par Value
($ and shares in full)
Net assets .........................................$    187,497,146    $      5,278,590
Shares outstanding .................................       5,130,826             464,929
Net asset value per share ..........................$          36.54    $          11.35
Institutional Class, $0.01 Par Value
($ and shares in full)
Net assets .........................................$     34,061,825    $        110,247
Shares outstanding .................................         925,972               9,588
Net asset value per share ..........................$          36.78    $          11.50
</TABLE>

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF ASSETS AND  LIABILITIES--This  statement details
what the fund owns (assets),  what it owes (liabilities),  and its net assets as
of the last day of the period.  If you subtract  what the fund owes from what it
owns,  you get the fund's net assets.  For each class of shares,  the net assets
divided  by the total  number of shares  outstanding  gives you the  priceof  an
individual share, or the net asset value per share.

NET ASSETS are also broken  down by capital  (money  invested by  shareholders);
netinvestment  income not yet paid to shareholders or net investment losses; net
gains earned on investments  but not yet paid to  shareholders  or net losses on
investments (known as realized gains or losses); and finally, gains or losses on
securities  still  owned  by the  fund  (known  as  unrealized  appreciation  or
depreciation).  This  breakdown  tells  you the  value  of net  assets  that are
performance-  related,  such as investment gains or losses, and the value of net
assets that are not related to performance,  such as shareholder investments and
redemptions.

                                               See Notes to Financial Statements

18 1-800-345-2021

Statements of Operations
- --------------------------------------------------------------------------------
FOR THE SIX MONTHS ENDED APRIL 30, 1999 (UNAUDITED)    ULTRA         VISTA
INVESTMENT LOSS                                           (In Thousands)
Income:
Dividends (net of foreign taxes withheld
  of $242 and $6, respectively) ..................$   105,076    $     2,044
Interest .........................................      4,697            699
                                                  -----------    -----------
                                                      109,773          2,743
                                                  -----------    -----------

Expenses (Note 2):

Management fees ..................................    152,806          4,516
Distribution fees -- Advisor Class ...............        181              6
Service fees -- Advisor Class ....................        181              6
Directors' fees and expenses .....................        131              4
                                                  -----------    -----------
                                                      153,299          4,532
                                                  -----------    -----------
Net investment loss ..............................    (43,526)        (1,789)
                                                  -----------    -----------
REALIZED AND UNREALIZED GAIN ON
INVESTMENTS AND FOREIGN CURRENCY (NOTE 3)

Net realized gain on:

Investments ......................................    320,877         42,269
Foreign currency transactions ....................     22,126           --
                                                      343,003         42,269
                                                  -----------    -----------
Change in net unrealized appreciation on:

Investments ......................................  7,323,051        150,484
Translation of assets and liabilities
  in foreign currencies ..........................        370           --
                                                  -----------    -----------
                                                    7,323,421        150,484
                                                  -----------    -----------
Net realized and unrealized gain on investments ..  7,666,424        192,753
                                                  -----------    -----------
Net Increase in Net Assets Resulting
  from Operations ................................$ 7,622,898    $   190,964
                                                  ===========    ===========

- --------------------------------------------------------------------------------
UNDERSTANDING  THE STATEMENT OF  OPERATIONS--This  statement breaks down how the
fund's  net  assets  changed  during  the  period  as a  result  of  the  fund's
operations.  It tells you how much money the fund made or lost after taking into
account income,  fees and expenses,  and investment gains or losses. It does not
include shareholder  transactions and distributions.

Fund OPERATIONS include:

* income earned from investments (dividend and interest)

* management fees and other expenses

* gains or losses from selling investments (known as realized gains or losses)

* gains or losses on current fund holdings (known as unrealized  appreciation or
depreciation)

See Notes to Financial Statements


                                                 www.americancentury.com     19




<TABLE>
<CAPTION>
Statements of Changes in Net Assets
- --------------------------------------------------------------------------------

SIX MONTHS ENDED APRIL 30, 1999 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 1998
                                                                            ULTRA                         VISTA
<S>                                                                <C>               <C>           <C>            <C>
Increase (Decrease) in Net Assets                                  1999              1998          1999           1998
OPERATIONS                                                                           (In Thousands)

Net investment loss .........................................$    (43,526)   $    (19,332)   $     (1,789)   $     (5,907)
Net realized gain (loss) on investments and
  foreign currency transactions .............................     343,003       2,504,658          42,269         (27,871)
Change in net unrealized appreciation (depreciation)
  on investments and translation of assets and liabilities
  in foreign currencies .....................................   7,323,421       1,250,224         150,484        (416,761)
                                                             ------------    ------------    ------------    ------------
Net increase (decrease) in net assets resulting from
  operations ................................................   7,622,898       3,735,550         190,964        (450,539)
                                                             ------------    ------------    ------------    ------------

DISTRIBUTIONS TO SHAREHOLDERS From net investment income:
    Investor Class ..........................................        --            (8,654)           --              --
    Institutional Class .....................................        --                (1)           --              --
From net realized gains on investment transactions:
    Investor Class ..........................................  (2,558,609)     (4,593,562)           --           (98,425)
    Advisor Class ...........................................     (10,096)         (6,944)           --              (378)
    Institutional Class .....................................      (1,995)            (73)           --              (750)
                                                             ------------    ------------    ------------    ------------
Decrease in net assets from distributions ...................  (2,570,700)     (4,609,234)           --           (99,553)
                                                             ------------    ------------    ------------    ------------

CAPITAL SHARE TRANSACTIONS (NOTE 4)
Net increase (decrease) in net assets from
  capital share transactions ................................   3,329,700       4,679,017        (204,241)       (398,837)
                                                             ------------    ------------    ------------    ------------
Net increase (decrease) in net assets .......................   8,381,898       3,805,333         (13,277)       (948,929)

NET ASSETS
Beginning of period .........................................  25,531,249      21,725,916         899,293       1,848,222
                                                             ------------    ------------    ------------    ------------
End of period ...............................................$ 33,913,147    $ 25,531,249    $    886,016    $    899,293
                                                             ============    ============    ============    ============

Net investment loss .........................................$    (43,526)           --      $     (1,789)           --
                                                             ============    ============    ============    ============
</TABLE>

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF CHANGES IN NET ASSETS--These statements show how
the fund's net assets  changed over the past two reporting  periods.  It details
how much a fund grew or shrank as a result  of:

*  operations--a  summary of the Statement of Operations  from the previous page
for the most recent period

* distributions--income and gains distributed to shareholders

* share transactions--shareholders' purchases, reinvestments, and redemptions

Net  assets  at the  beginning  of  the  period  plus  the  sum  of  operations,
distributions  to  shareholders  and capital  share  transactions  result in net
assets at the end of the period.

                                              See Notes to Financial Statements


20     1-800-345-2021




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

APRIL 30, 1999 (UNAUDITED)

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     ORGANIZATION -- American  Century Mutual Funds,  Inc. (the  corporation) is
registered under the Investment  Company Act of 1940 as an open-end  diversified
management  investment  company.  Ultra Fund (Ultra) and Vista Fund (Vista) (the
funds) are two of the thirteen  series of funds issued by the  corporation.  The
funds' investment  objective is to seek capital growth by investing primarily in
equity  securities.  The funds are  authorized to issue three classes of shares:
the Investor Class,  the Advisor Class, and the  Institutional  Class. The three
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  are  in  accordance  with  generally  accepted  accounting
principles;   these  principles  may  require  the  use  of  estimates  by  fund
management.

     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.  Discount notes are
valued through a commercial  pricing  service.  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 as of the
trade date. 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 accretion of discounts and amortization of premiums.

     FOREIGN  CURRENCY  TRANSACTIONS  -- All  assets and  liabilities  initially
expressed in foreign  currencies are translated into U.S.  dollars at prevailing
exchange  rates at period end.  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.  For assets
and  liabilities,  other  than  investments  in  securities,  net  realized  and
unrealized  gains and  losses  from  foreign  currency  translations  arise from
changes in currency exchange rates.

     Net realized  and  unrealized  foreign  currency  exchange  gains or losses
occurring during the holding period of investment  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 to  facilitate  transactions  of
securities  denominated in a foreign currency or to hedge the fund's exposure to
foreign  currency  exchange  rate  fluctuations.  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. 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.  Each  fund  requires  that the  collateral,  represented  by
securities, received in a repurchase transaction be transferred to the custodian
in a manner  sufficient  to enable each fund to obtain those  securities  in the
event of a default under the repurchase  agreement.  ACIM  monitors,  on a daily
basis,  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 each fund under each repurchase agreement.

     JOINT  TRADING  ACCOUNT -- Pursuant  to an  Exemptive  Order  issued by the
Securities  and  Exchange  Commission,  each fund,  along with other  registered
investment  companies  having  management  agreements  with ACIM,  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  fund's  policy  to  distribute  all  net
investment  income  and net  realized  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 or state
income taxes.


                                                 www.americancentury.com     21




Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)

APRIL 30, 1999 (UNAUDITED)

     DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded
on the  ex-dividend  date.  Distributions  from net  investment  income  and net
realized gains are declared and paid annually.

     At October 31,  1998,  Vista had  accumulated  net  realized  capital  loss
carryovers  for federal  income tax purposes of  $25,756,378  (expiring in 2006)
which may be used to offset future taxable realized gains.

     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  reflect the differing character
of  certain  income  items and net  realized  gains  and  losses  for  financial
statement  and tax purposes  and may result in  reclassification  among  certain
capital accounts.

     ADDITIONAL   INFORMATION   --  Funds   Distributor,   Inc.   (FDI)  is  the
corporation's  distributor.  Certain  officers  of FDI are also  officers of the
corporation.

- --------------------------------------------------------------------------------
2. TRANSACTIONS WITH RELATED PARTIES

     The  corporation  has entered  into a Management  Agreement  with ACIM that
provides the funds with investment  advisory and management services in exchange
for a single,  unified management fee per class. The Agreement provides 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 fund's class average daily closing net assets during the previous month.
The annual management fee is 1.00%,  0.75% and 0.80% for the Investor,  Advisor,
and Institutional Classes, respectively.

     The Board of Directors  has adopted the Advisor  Class Master  Distribution
and  Shareholder  Services  Plan  (the  plan),  pursuant  to Rule  12b-1  of the
Investment  Company Act of 1940.  The 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  respect  to shares of the  funds.  The  service  fee  provides
compensation for shareholder and  administrative  services rendered by ACIM, its
affiliates  or  independent  third party  providers.  Fees incurred by the funds
under the plan during the six months  ended April 30,  1999,  were  $362,540 for
Ultra and $11,838 for Vista.

     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 and
the corporation's transfer agent, American Century Services Corporation.

- --------------------------------------------------------------------------------
3. INVESTMENT TRANSACTIONS

     Purchases of investment securities,  excluding short-term investments,  for
Ultra and Vista totaled $6,075,517,401 and $1,075,619,421,  respectively.  Sales
of   investment   securities,    excluding   short-term   investments,   totaled
$5,095,973,056 and $1,260,884,774, respectively.

     As of April 30, 1999, accumulated net unrealized appreciation for Ultra and
Vista was $13,391,783,139 and $176,157,981, respectively, based on the aggregate
cost of  investments  for federal  income tax  purposes of  $20,638,999,767  and
$678,886,710 respectively.  Accumulated net unrealized appreciation consisted of
unrealized appreciation of $13,437,801,420 and $201,769,299 for Ultra and Vista,
respectively,  and  unrealized  depreciation  of  $46,018,281  and  $25,611,318,
respectively.


22     1-800-345-2021




Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)

APRIL 30, 1999 (UNAUDITED)

- --------------------------------------------------------------------------------
4. CAPITAL SHARE TRANSACTIONS

<TABLE>
  Transactions in shares of the funds were as follows:

                                                           ULTRA                         VISTA
                                                SHARES            AMOUNT        SHARES         AMOUNT
INVESTOR CLASS                                                      (IN THOUSANDS)
- -------------------------------------------------------------------------------------------------------
<S>                                            <C>            <C>               <C>         <C>
Shares authorized ...........................1,062,500                         710,000
                                             ==========                       =========

Six months ended April 30, 1999
Sold ........................................  132,567        $4,619,896        29,558      $ 308,497
Issued in reinvestment of distributions .....   79,980         2,515,533            --             --
Redeemed .................................... (111,309)       (3,863,446)      (49,004)      (512,960)
                                             ----------        ----------    ----------     ----------
Net increase (decrease) .....................  101,238        $3,271,983       (19,446)     $(204,463)
                                             ==========        ==========    ==========     ==========
Year ended October 31, 1998
Sold ........................................  224,437        $7,006,778        98,587     $1,196,006
Issued in reinvestment of distributions .....  170,508         4,526,262         7,926         95,322
Redeemed .................................... (225,564)       (6,959,796)     (135,809)    (1,678,583)
                                             ----------        ----------    ----------     ----------
Net increase (decrease) .....................  169,381        $4,573,244       (29,296)   $  (387,255)
                                             ==========        ==========    ==========     ==========

ADVISOR CLASS                                                       (IN THOUSANDS)
- -------------------------------------------------------------------------------------------------------
Shares authorized ...........................  312,500                         210,000
                                             ==========                      ==========
Six months ended April 30, 1999
Sold ........................................    2,513           $87,238           144         $1,496
Issued in reinvestment of distributions .....      319             9,983            --             --
Redeemed ....................................     (893)          (31,177)         (118)        (1,233)
                                             ----------        ----------    ----------     ----------
Net increase ................................    1,939           $66,044            26        $   263
                                             ==========        ==========    ==========     ==========
Year ended October 31, 1998
Sold ........................................    2,873           $87,888           211         $2,555
Issued in reinvestment of distributions .....      262             6,944            32            378
Redeemed ....................................     (866)          (26,625)         (256)        (3,132)
                                             ----------        ----------    ----------     ----------
Net increase (decrease) .....................    2,269           $68,207           (13)        $ (199)
                                             ==========        ==========    ==========     ==========

INSTITUTIONAL CLASS                                                 (IN THOUSANDS)
- -------------------------------------------------------------------------------------------------------
Shares authorized ...........................  125,000                          80,000
                                             ==========                      ==========
Six months ended April 30, 1999
Sold ........................................      920           $31,196           294         $3,201
Issued in reinvestment of distributions .....       63             1,976            --             --
Redeemed ....................................   (1,216)          (41,499)         (290)        (3,242)
                                             ----------        ----------    ----------     ----------
Net increase (decrease) .....................     (233)         $ (8,327)            4        $   (41)
                                             ==========        ==========    ==========     ==========
Year ended October 31, 1998
Sold ........................................    3,132           $98,660           998        $12,315
Issued in reinvestment of distributions .....        2                49            62            750
Redeemed ....................................   (1,985)          (61,143)       (1,986)       (24,448)
                                             ----------        ----------    ----------     ----------
Net increase (decrease) .....................    1,149           $37,566          (926)      $(11,383)
                                             ==========        ==========    ==========     ==========
</TABLE>


                                                  www.americancentury.com     23




Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)

APRIL 30, 1999 (UNAUDITED)

- --------------------------------------------------------------------------------
5. BANK LOANS

     Effective  December 18,  1998,  the funds,  along with certain  other funds
managed by ACIM,  entered  into an  unsecured  $570,000,000  bank line of credit
agreement  with  Chase  Manhattan  Bank.  Borrowings  under the  agreement  bear
interest at the Federal  Funds rate plus 0.40%.  The funds may borrow  money for
temporary or emergency purposes to fund shareholder  redemptions.  The funds did
not borrow from the line during the period  December 18, 1998 through  April 30,
1999.

- --------------------------------------------------------------------------------
6. FUND EVENTS

   The following name changes became effective March 1, 1999:

          NEW NAME        FORMER NAME
   FUND:  Ultra Fund      American Century -- Twentieth Century Ultra Fund
   FUND:  Vista Fund      American Century -- Twentieth Century Vista Fund


24     1-800-345-2021




Ultra--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED OCTOBER 31 (EXCEPT AS NOTED)

Investor Class
                                               1999(1)         1998          1997          1996          1995            1994

PER-SHARE DATA
<S>                                        <C>            <C>           <C>           <C>           <C>             <C>
Net Asset Value, Beginning of Period ......$    31.06     $    33.46    $    29.52    $    28.03    $    21.16      $    21.61
                                           ----------     ----------    ----------    ----------    ----------      ----------
Income From Investment Operations
  Net Investment Income (Loss) ............     (0.05)(2)      (0.02)(2)      0.01(2)      (0.05)(2)     (0.07)(2)       (0.03)
  Net Realized and Unrealized Gain (Loss)
    on Investment Transactions ............      8.77           4.70          5.62          2.84          7.58           (0.42)
                                           ----------     ----------    ----------    ----------    ----------      ----------
  Total From Investment Operations ........      8.72           4.68          5.63          2.79          7.51           (0.45)
                                           ----------     ----------    ----------    ----------    ----------      ----------
Distributions
  From Net Investment Income ..............      --            (0.01)         --            --            --              --
  From Net Realized Gains on Investment
  Transactions ............................     (3.12)         (7.07)        (1.69)        (1.19)        (0.64)           --
  In Excess of Net Realized Gains .........      --             --            --           (0.11)         --              --
                                           ----------     ----------    ----------    ----------    ----------      ----------
  Total Distributions .....................     (3.12)         (7.08)        (1.69)        (1.30)        (0.64)           --
                                           ----------     ----------    ----------    ----------    ----------      ----------
Net Asset Value, End of Period ............$    36.66     $    31.06    $    33.46    $    29.52    $    28.03      $    21.16
                                           ==========     ==========    ==========    ==========    ==========      ==========
  Total Return(3) .........................     29.76%         17.61%        19.95%        10.79%        36.89%          (2.08)%

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses to Average
Net Assets ................................      1.00%(4)       1.00%         1.00%         1.00%         1.00%           1.00%
Ratio of Net Investment Income (Loss)
  to Average Net Assets ...................(0.28)%(4)          (0.08)%        0.03%        (0.20)%       (0.30)%         (0.10)%
Portfolio Turnover Rate ...................        17%           128%          107%           87%           87%             78%
Net Assets, End of Period (in millions) ...$   33,692     $   25,396    $   21,695    $   18,266    $   14,376      $   10,344
</TABLE>

(1)  Six months ended April 30, 1999 (unaudited).

(2)  Computed using average shares outstanding throughout the year.

(3)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any. Total returns for periods less than one year are not
     annualized.

(4)  Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING  THE  FINANCIAL  HIGHLIGHTS--These  pages itemize  current  period
activity and  statistics  and provide  comparison  data for the last five fiscal
years (or less, if the class is not five years old).

On a per-share basis, it includes:
* share price at the beginning of the period
* investment income and capital gains or losses
* income and capital gains distributions paid to shareholders
* share price at the end of the period

It also includes some key statistics for the period:
* total return--the overall percentage return of the fund, assuming reinvestment
  of all distributions
* expense ratio--operating expenses as a percentage of average net assets
* net income ratio--net investment income as a percentage of average net assets
* portfolio  turnover--the  percentage of the portfolio that was replaced during
  the period

See Notes to Financial Statements


                                                  www.americancentury.com     25




Ultra--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED OCTOBER 31 (EXCEPT AS NOTED)

Advisor Class
                                              1999(1)             1998          1997        1996(2)

PER-SHARE DATA
<S>                                        <C>               <C>           <C>           <C>
Net Asset Value, Beginning of Period ......$     31.00       $     33.36   $     29.52   $     29.55
                                           -----------       -----------   -----------   -----------
Income From Investment Operations
  Net Investment Loss(3) ..................      (0.09)            (0.11)        (0.07)        (0.02)
  Net Realized and Unrealized Gain (Loss)
    on Investment Transactions ............       8.75              4.73          5.60         (0.01)
                                           -----------       -----------   -----------   -----------
  Total From Investment Operations ........       8.66              4.62          5.53         (0.03)
                                           -----------       -----------   -----------   -----------
Distributions
  From Net Realized Gains on Investment
  Transactions ............................      (3.12)            (6.98)        (1.69)         --
                                           -----------       -----------   -----------   -----------
Net Asset Value, End of Period ............$     36.54       $     31.00   $     33.36   $     29.52
                                           ===========       ===========   ===========   ===========
  Total Return(4) .........................      29.62%            17.36%        19.59%        (0.10)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average
  Net Assets ..............................       1.25%(5)          1.25%         1.25%         1.25%(5)

Ratio of Net Investment Loss to Average
  Net Assets .............................. (0.53)%(5)             (0.33)%       (0.22)%  (0.80)%(5)
Portfolio Turnover Rate ...................         17%              128%          107%           87%
Net Assets, End of Period (in thousands) ..$   187,497       $    98,965   $    30,827   $    13,051
</TABLE>

(1)  Six months ended April 30, 1999 (unaudited).
(2)  October 2, 1996 (commencement of sale) through October 31, 1996.
(3)  Computed using average shares outstanding throughout the period.
(4)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any. Total returns for periods less than one year are not
     annualized.
(5)  Annualized.

                                              See Notes to Financial Statements


26     1-800-345-2021




Ultra--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED OCTOBER 31 (EXCEPT AS NOTED)

Institutional Class
                                              1999(1)            1998        1997(2)
PER-SHARE DATA
<S>                                        <C>               <C>            <C>
Net Asset Value, Beginning of Period ...   $    31.12        $    33.53     $    30.78
                                           ----------        ----------     ----------
Income From Investment Operations
  Net Investment Income (Loss)(3) ......        (0.01)             0.03           0.06
  Net Realized and Unrealized Gain on
    Investment Transactions ............         8.79              4.72           4.38
                                           ----------        ----------     ----------
  Total From Investment Operations .....         8.78              4.75           4.44
                                           ----------        ----------     ----------
Distributions
  From Net Investment Income ...........         --               (0.09)          --
  From Net Realized Gains on
    Investment Transactions ............        (3.12)            (7.07)         (1.69)
                                           ----------        ----------     ----------
  Total Distributions ..................        (3.12)            (7.16)         (1.69)
                                           ----------        ----------     ----------
Net Asset Value, End of Period .........   $    36.78        $    31.12     $    33.53
                                           ==========        ==========     ==========
  Total Return(4) ......................        29.91%            17.85%         15.28%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to
  Average Net Assets ...................         0.80%(5)          0.80%          0.80%(5)
Ratio of Net Investment Income (Loss)
  to Average Net Assets ................   (0.08)%(5)              0.12%          0.23%(5)
Portfolio Turnover Rate ................           17%              128%           107%
Net Assets, End of Period (in thousands)   $   34,062        $   36,065     $      334
</TABLE>

(1)  Six months ended April 30, 1999 (unaudited).

(2)  November 14, 1996 (commencement of sale) through October 31, 1997.

(3)  Computed using average shares outstanding throughout the period.

(4)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any. Total returns for periods less than one year are not
     annualized.

(5)  Annualized.

See Notes to Financial Statements


                                                  www.americancentury.com     27




Vista--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED OCTOBER 31 (EXCEPT AS NOTED)

Investor Class

                                              1999(1)       1998         1997           1996           1995           1994
PER-SHARE DATA
<S>                                        <C>           <C>          <C>            <C>            <C>            <C>
Net Asset Value, Beginning of Period ......$    9.27     $   14.53    $   15.68      $   15.73      $   10.94      $   12.24
                                           ---------     ---------    ---------      ---------      ---------      ---------
Income From Investment Operations
  Net Investment Loss .....................    (0.02)(2)     (0.05)(2)    (0.10)(2)      (0.11)(2)      (0.08)(2)      (0.08)
  Net Realized and Unrealized Gain (Loss)
  on Investment Transactions ..............     2.17         (4.41)        0.13           1.09           4.90           0.45
                                           ---------     ---------    ---------      ---------      ---------      ---------
  Total From Investment Operations ........     2.15         (4.46)        0.03           0.98           4.82           0.37
                                           ---------     ---------    ---------      ---------      ---------      ---------
Distributions
  From Net Realized Gains on Investment
    Transactions ..........................     --           (0.80)       (1.18)         (1.02)         (0.03)         (1.66)
  In Excess of Net Realized Gains .........     --            --           --            (0.01)          --            (0.01)
                                           ---------     ---------    ---------      ---------      ---------      ---------
  Total Distributions .....................     --           (0.80)       (1.18)         (1.03)         (0.03)         (1.67)
                                           ---------     ---------    ---------      ---------      ---------      ---------
Net Asset Value, End of Period ............$   11.42     $    9.27    $   14.53      $   15.68      $   15.73      $   10.94
                                           =========     =========    =========      =========      =========      =========
  Total Return(3) .........................    23.19%       (31.94)%       0.29%          6.96%         44.20%          4.16%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to Average
Net Assets ................................     1.00%(4)      1.00%        1.00%          0.99%          0.98%          1.00%
Ratio of Net Investment Loss to Average
  Net Assets ..............................(0.39)%(4)        (0.42)%      (0.73)%        (0.70)%        (0.60)%        (0.80)%
Portfolio Turnover Rate ...................      123%          229%          96%            91%            89%           111%
Net Assets, End of Period (in millions) ...$     881     $     895    $   1,828      $   2,276      $   1,676      $     792
</TABLE>

(1)  Six months ended April 30, 1999 (unaudited).

(2)  Computed using average shares outstanding throughout the year.

(3)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any. Total returns for periods less than one year are not
     annualized.

(4)  Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING  THE  FINANCIAL  HIGHLIGHTS--These  pages itemize  current  period
activity and  statistics  and provide  comparison  data for the last five fiscal
years (or less,  if the class is not five years old).

On a per-share basis, it includes:

* share price at the beginning of the period
* investment income and capital gains or losses
* income and capital gains distributions paid to shareholders
* share price at the end of the period

It also  includes  some key statistics for the period:

* total return--the overall percentage return of the fund, assuming reinvestment
of all distributions

* expense ratio--operating expenses as a percentage of average net assets

* net income ratio--net investment income as a percentage of average net assets

* portfolio  turnover--the  percentage of the portfolio that was replaced during
the period

                                              See Notes to Financial Statements


28     1-800-345-2021




Vista--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED OCTOBER 31 (EXCEPT AS NOTED)

Advisor Class

                                              1999(1)           1998         1997       1996(2)
PER-SHARE DATA
<S>                                          <C>             <C>          <C>          <C>
Net Asset Value, Beginning of Period ......  $    9.23       $   14.50    $   15.67    $   16.87
                                             ---------       ---------    ---------    ---------
Income From Investment Operations
  Net Investment Loss(3) ..................      (0.03)          (0.08)       (0.14)       (0.02)
  Net Realized and Unrealized Gain
    (Loss) on Investment Transactions .....       2.15           (4.39)        0.15        (1.18)
                                             ---------       ---------    ---------    ---------
  Total From Investment Operations ........       2.12           (4.47)        0.01        (1.20)
                                             ---------       ---------    ---------    ---------
Distributions
  From Net Realized Gains on
    Investment Transactions ...............       --             (0.80)       (1.18)        --
                                             ---------       ---------    ---------    ---------
Net Asset Value, End of Period ............  $   11.35       $    9.23    $   14.50    $   15.67
                                             =========       =========    =========    =========
  Total Return(4) .........................      22.97%         (32.08)%       0.15%       (7.11)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to
  Average Net Assets ......................       1.25%(5)        1.25%        1.25%        1.25%(5)
Ratio of Net Investment Loss to
  Average Net Assets ......................  (0.64)%(5)          (0.67)%      (0.98)%  (1.20)%(5)
Portfolio Turnover Rate ...................        123%            229%          96%          91%
Net Assets, End of Period (in thousands) ..  $   5,279       $   4,052    $   6,553    $   5,646
</TABLE>

(1) Six months ended April 30, 1999 (unaudited).

(2) October 2, 1996 (commencement of sale) through October 31, 1996.

(3) Computed using average shares outstanding throughout the period.

(4)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
distributions,  if any.  Total  returns for  periods  less than one year are not
annualized.

(5) Annualized.

See Notes to Financial Statements


                                                  www.americancentury.com     29




Vista--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED OCTOBER 31 (EXCEPT AS NOTED)

Institutional Class

                                              1999(1)         1998       1997(2)
PER-SHARE DATA
<S>                                        <C>            <C>         <C>
Net Asset Value, Beginning of Period ......$     9.32     $    14.56  $    15.73
                                           ----------     ----------  ----------
Income From Investment Operations
  Net Investment Loss(3) ..................     (0.02)         (0.01)      (0.07)
  Net Realized and Unrealized Gain
    (Loss) on Investment Transactions .....      2.20          (4.43)       0.08
                                           ----------     ----------  ----------
  Total From Investment Operations ........      2.18          (4.44)       0.01
                                           ----------     ----------  ----------
Distributions
  From Net Realized Gains on
    Investment Transactions ...............      --            (0.80)      (1.18)
                                           ----------     ----------  ----------
Net Asset Value, End of Period ............$    11.50     $     9.32  $    14.56
                                           ==========     ==========  ==========
  Total Return(4) .........................     23.39%        (31.72)%      0.17%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to
  Average Net Assets ......................      0.80%(5)       0.80%       0.80%(5)
Ratio of Net Investment Loss to
  Average Net Assets ......................(0.19)%(5)          (0.22)%     0.53)%(5)
Portfolio Turnover Rate ...................       123%           229%         96%
Net Assets, End of Period (in thousands) ..$      110     $       60  $   13,581
</TABLE>

(1)  Six months ended April 30, 1999 (unaudited).

(2)  November 14, 1996 (commencement of sale) through October 31, 1997.

(3)  Computed using average shares outstanding throughout the period.

(4)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any. Total returns for periods less than one year are not
     annualized.

(5)  Annualized.

                                              See Notes to Financial Statements


30     1-800-345-2021




Share Class and Retirement Account Information
- --------------------------------------------------------------------------------

SHARE CLASSES

     Three  classes of shares  are  authorized  for sale by the funds:  Investor
Class, Advisor Class, and Institutional Class.

     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.

     ADVISOR  CLASS shares are 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.

     INSTITUTIONAL  CLASS  shares  are  available  to  endowments,  foundations,
defined  benefit  pension  plans,  or  financial  intermediaries  serving  these
investors.   This  class   recognizes  the  relatively  lower  cost  of  serving
institutional customers and others who invest at least $5 million in an American
Century fund or at least $10 million in multiple  funds.  In  recognition of the
larger  investments and account  balances and  comparatively  lower  transaction
costs, the total expense ratio of the  Institutional  Class shares is 0.20% less
than the total expense ratio of the Investor Class shares.

     All  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)
account] 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 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 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 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.


                                                  www.americancentury.com     31




Background Information
- --------------------------------------------------------------------------------

INVESTMENT PHILOSOPHY AND POLICIES

     American  Century  offers  13  growth  funds  including   domestic  equity,
specialty,  international,  and global. The philosophy behind these growth funds
focuses on three important  principles.  First, the funds seek to own successful
companies,  which we define as those with growing earnings and revenues. Second,
we attempt to keep the funds fully  invested,  regardless of  short-term  market
activity.  Experience  has shown that  market  gains can occur in  unpredictable
spurts  and  that  missing  those  opportunities  can  significantly  limit  the
potential for gain.  Third,  the funds are managed by teams,  rather than by one
"star." We believe this allows us to make  better,  more  consistent  management
decisions.

     In addition to these principles, each fund has its own investment policies:

     AMERICAN CENTURY ULTRA generally invests in the securities of mid-sized and
larger companies that exhibit growth.  It typically will have significant  price
fluctuations.

     AMERICAN  CENTURY  VISTA  invests  mainly in the  securities of smaller and
medium-sized firms that exhibit growth. The fund is subject to significant price
volatility but offers high long-term growth potential.  Historically, small- and
mid-cap  stocks  have  been  more  volatile  than the  stocks  of  larger,  more
established companies.

COMPARATIVE INDICES

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

     The DOW JONES INDUSTRIAL  AVERAGE (DJIA) is a price-weighted  average of 30
actively   traded  Blue  Chip  stocks,   primarily   industrials  but  including
service-oriented  firms.  Prepared  and  published by Dow Jones & Co., it is the
oldest and most widely quoted of all the market indicators.

     The  S&P  500  is a  capitalization-weighted  index  of the  stocks  of 500
publicly  traded  U.S.  companies  that are  considered  to be leading  firms in
dominant industries.  Created by Standard & Poor's Corporation, it is considered
to be a broad measure of U.S. stock market performance.

     The S&P 500/BARRA VALUE INDEX is a capitalization-weighted index consisting
of S&P 500 stocks that have lower price-to-book  ratios, and, in general,  share
other characteristics with value-style stocks.

     The S&P MIDCAP 400 is a capitalization-weighted  index of the stocks of the
400 largest  leading  U.S.  companies  not  included in the S&P 500.  Created by
Standard & Poor's Corporation,  it is considered to represent the performance of
mid-cap stocks generally.

     The  RUSSELL  2000  INDEX was  created  by the Frank  Russell  Company.  It
measures the  performance  of the 2,000  smallest of the 3,000 largest  publicly
straded U.S.  companies based on total market  capitalization.  The Russell 2000
represents approximately 10% of the total market capitalization of the top 3,000
companies.  The average market capitalization of the index is approximately $420
million.

     The  RUSSELL  2500  INDEX was  created  by the Frank  Russell  Company.  It
measures the  performance  of the 2,500  smallest of the 3,000 largest  publicly
traded U.S.  companies  based on total market  capitalization.  The Russell 2500
represents approximately 23% of the total market capitalization of the top 3,000
companies.  The average market capitalization of the index is approximately $650
million. The RUSSELL 2500 GROWTH INDEX measures the performance of those Russell
2500 companies with higher  price-to-book  ratios and higher  forecasted  growth
rates.

[left margin]

PORTFOLIO MANAGERS
ULTRA
     JIM STOWERS III
     BRUCE WIMBERLY
     JOHN SYKORA, CFA
VISTA
     GLENN FOGLE, CFA
     ARNIE DOUVILLE


32     1-800-345-2021




Glossary

RETURNS

* 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.

* 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 total returns,  please refer to the "Financial
Highlights" on pages 25-30.

INVESTMENT TERMS

* EXPENSE RATIO -- the operating expenses of the fund, expressed as a percentage
of average net assets.  Shareholders pay an annual fee to the investment manager
for  investment  advisory  and  management  services.  The expenses and fees are
deducted from fund income, not from each shareholder account. (See Note 2 in the
Notes to Financial Statements.)

* MEDIAN  MARKET  CAPITALIZATION  -- Market  capitalization  (market cap) is the
total value of a company's  stock and is calculated by multiplying the number of
outstanding  common shares by the current share price.  The company whose market
cap is in the  middle  of the  portfolio  is the  median  market  cap.  Half the
companies in the portfolio  have values  greater than the median,  and half have
values that are less. If there is an even number of  companies,  then the median
is the average of the two companies in the middle.

* NUMBER OF COMPANIES -- the number of different  companies  held by a fund on a
given date.

* PORTFOLIO TURNOVER -- the percentage of a fund's investment  portfolio that is
replaced during a given time period, usually a year. Actively managed portfolios
tend to have higher  turnover than passively  managed  portfolios  such as index
funds.

*  PRICE/BOOK  RATIO -- a stock  value  measurement  calculated  by  dividing  a
company's stock price by its book value per share,  with the result expressed as
a multiple  instead of as a  percentage.  (Book value per share is calculated by
subtracting a company's liabilities from its assets, then dividing that value by
the number of outstanding shares.)

* PRICE/EARNINGS (P/E) 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 as a  percentage.  (Earnings  per share is  calculated by
dividing the after-tax earnings of a corporation by its outstanding shares.)

TYPES OF STOCKS

* BLUE  CHIP  STOCKS -- stocks of the most  established  companies  in  American
industry.   They  are  generally  large,   fairly  stable  companies  that  have
demonstrated  consistent  earnings and usually have long-term growth  potential.
Examples include General Electric and Coca-Cola.

* CYCLICAL STOCKS -- generally  considered to be stocks whose price and earnings
fluctuations  tend to follow the ups and downs of the business  cycle.  Examples
include the stocks of automobile  manufacturers,  steel  producers,  and textile
operators.

* GROWTH  STOCKS --  stocks of  companies  that have  experienced  above-average
earnings  growth and are expected to continue  such  growth.  These stocks often
sell at high P/E


                                                 www.americancentury.com      33




Glossary
- --------------------------------------------------------------------------------
                                                                    (Continued)

ratios. Examples can include the stocks of high-tech,  healthcare,  and consumer
staples companies.

* LARGE-CAPITALIZATION ("LARGE-CAP") STOCKS -- generally considered to be stocks
of  companies  with a market  capitalization  (the  total  value of a  company's
outstanding  stock) of more than $5  billion.  These tend to be the stocks  that
make up the Dow Jones Industrial Average and the S&P 500.

*  MEDIUM-CAPITALIZATION  ("MID-CAP") STOCKS --generally considered to be stocks
of  companies  with a market  capitalization  (the  total  value of a  company's
outstanding  stock) of between $1 billion and $5  billion.  These tend to be the
stocks that make up the S&P 400.

* SMALL-CAPITALIZATION ("SMALL-CAP") STOCKS -- generally considered to be stocks
of  companies  with a market  capitalization  (the  total  value of a  company's
outstanding  stock) of less than $1  billion.  These tend to be the stocks  that
make up the Russell 2000 Index.

* VALUE STOCKS -- generally  considered to be stocks that are purchased  because
they are relatively inexpensive. These stocks are typically characterized by low
P/E ratios.

FUND CLASSIFICATIONS

INVESTMENT OBJECTIVE

The investment  objective may be based on the fund's  objective as stated in its
prospectus or fund profile,  or the fund's  categorization by independent rating
organizations based on its management style.

* CAPITAL  PRESERVATION  -- offers  taxable and tax-free  money market funds for
relative stability of principal and liquidity.

*INCOME -- offers funds that can provide current income and competitive  yields,
as well as a strong and stable foundation and lower volatility levels than stock
funds.

*GROWTH & INCOME  --  offers  funds  that  emphasize  both  growth  and  income,
diversification,  varying  capitalization sizes, and different investment styles
and strategies.

*GROWTH  -- offers  funds  with a focus on capital  appreciation  and  long-term
growth,  generally providing high return potential with corresponding high price
fluctuation risk.

RISK

The classification of funds by risk category is based on quantitative historical
measures as well as qualitative prospective measures. It is not intended to be a
precise  indicator  of future risk or return  levels.  The degree of risk within
each category can vary  significantly,  and some fund returns have  historically
been higher than more aggressive  funds or lower than more  conservative  funds.
Please be aware that the fund's category may change over time. Therefore,  it is
important  that you read a fund's  prospectus or fund profile  carefully  before
investing to ensure its objectives,  policies, and risk potential are consistent
with your needs.

*CONSERVATIVE  -- these funds  generally  provide  lower return  potential  with
either low or minimal price fluctuation risk.

*MODERATE  -- these funds  generally  provide  moderate  return  potential  with
moderate price fluctuation risk.

*AGGRESSIVE  --  these  funds  generally  provide  high  return  potential  with
corresponding high price fluctuation risk.


34     1-800-345-2021




Notes
- --------------------------------------------------------------------------------


                                                  www.americancentury.com     35




Notes
- --------------------------------------------------------------------------------


36     1-800-345-2021




[inside back cover]

- --------------------------------------------------------------------------------
INVESTMENT OBJECTIVE - CAPITAL PRESERVATION
- --------------------------------------------------------------------------------

RISK LEVEL - CONSERVATIVE

TAXABLE MONEY MARKETS           TAX-FREE MONEY MARKETS
Premium  Capital Reserve        FL Municipal Money Market
Prime Money Market              CA Municipal Money Market
Premium Government Reserve      CA Tax-Free Money Market
Government Agency               Tax-Free Money Market
   Money Market
Capital Preservation

- --------------------------------------------------------------------------------
INVESTMENT OBJECTIVE - INCOME
- --------------------------------------------------------------------------------

RISK LEVEL - AGGRESSIVE

TAXABLE BONDS                   TAX-FREE BONDS
Target 2025*                    CA High-Yield Municipal
Target 2020*                    High-Yield Municipal
Target 2015*
Target 2010*
High-Yield
International Bond

RISK LEVEL - MODERATE

TAXABLE BONDS                   TAX-FREE BONDS
Long-Term Treasury              CA Long-Term Tax-Free
Target 2005*                    Long-Term Tax-Free
Bond                            CA Insured Tax-Free
Premium Bond

RISK LEVEL - CONSERVATIVE

TAXABLE BONDS                   TAX-FREE BONDS
Intermediate-Term Bond          CA Intermediate-Term Tax-Free
Intermediate-Term Treasury      AZ Intermediate-Term Municipal
GNMA                            FL Intermediate-Term Municipal
Inflation-Adjusted Treasury     Intermediate-Term  Tax-Free
Limited-Term Bond               CA Limited-Term  Tax-Free
Target 2000*                    Limited-Term Tax-Free
Short-Term Government
Short-Term Treasury

- --------------------------------------------------------------------------------
INVESTMENT OBJECTIVE - GROWTH AND INCOME
- --------------------------------------------------------------------------------

RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY
Small Cap Quantitative
Small Cap Value

RISK LEVEL - MODERATE

ASSET ALLOCATION/BALANCED       DOMESTIC EQUITY        SPECIALTY
Strategic Allocation:           Equity Growth          Utilities
   Aggressive                   Equity Index           Real Estate
Balanced                        Tax-Managed Value
Strategic Allocation:           Income & Growth
   Moderate                     Value
Strategic Allocation:           Equity Income
   Conservative

- --------------------------------------------------------------------------------
INVESTMENT OBJECTIVE - GROWTH
- --------------------------------------------------------------------------------

RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY                 SPECIALTY              INTERNATIONAL
New Opportunities               Global Gold            Emerging Markets
Giftrust(reg.tm)                                       International Discovery
Vista                                                  International Growth
Heritage                                               Global Growth
Growth
Ultra(reg.tm)
Select

RISK LEVEL - MODERATE

SPECIALTY
Global Natural Resources

The investment  objective may be based on the fund's  objective as stated in its
prospectus or fund profile,  or the fund's  categorization by independent rating
organizations based on its management style.

The classification of funds by risk category is based on quantitative historical
measures as well as qualitative prospective measures. It is not intended to be a
precise  indicator  of future risk or return  levels.  The degree of risk within
each category can vary  significantly,  and some fund returns have  historically
been higher than more aggressive  funds or lower than more  conservative  funds.
Please be aware that a fund's  category may change over time.  Therefore,  it is
important  that you read a fund's  prospectus or fund profile  carefully  before
investing to ensure its  objectives,  policies and risk potential are consistent
with your needs.

For a definition of fund categories, see the Glossary.

*  While listed within the Income investment objective,  the Target funds do not
   pay current dividend income.  Income dividends are distributed once a year in
   December. The Target funds are listed in all three risk categories due to the
   dramatic  price  volatility  investors may  experience  during certain market
   conditions.  If held  to  their  target  dates,  however,  they  can  offer a
   conservative, dependable way to invest for a specific time horizon.

Please call  1-800-345-2021  for a prospectus or profile on any American Century
fund.  These  documents  contain  important  information  including  charges and
expenses, and you should read them carefully before you invest or send money.




[back cover]

[american century logo(reg.sm)]
American
Century

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

www.americancentury.com

INVESTOR RELATIONS
1-800-345-2021 or 816-531-5575

AUTOMATED INFORMATION LINE
1-800-345-8765

FAX: 816-340-7962

TELECOMMUNICATIONS DEVICE FOR THE DEAF
1-800-634-4113 or 816-444-3485

BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS
1-800-345-3533

AMERICAN CENTURY MUTUAL FUNDS INC.

INVESTMENT MANAGER
American Century Investment Management, Inc.
Kansas City, Missouri

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 Investments                                      BULK RATE
P.O. Box 419200                                               U.S. POSTAGE PAID
Kansas City, MO 64141-6200                                     AMERICAN CENTURY
www.americancentury.com                                           COMPANIES


9905                               Funds Distributor, Inc.
SH-BKT-16617                      (c)1999 American Century Services Corporation


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