AMERICAN CENTURY TARGET MATURITIES TRUST
N-30D, 1999-05-27
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[front cover]
                                                              MARCH 31, 1999

SEMIANNUAL REPORT
- -----------------
AMERICAN CENTURY

   [graphic of stairs]

AMERICAN CENTURY
- -----------------------------
TARGET MATURITIES TRUST: 2000
TARGET MATURITIES TRUST: 2005
TARGET MATURITIES TRUST: 2010
TARGET MATURITIES TRUST: 2015
TARGET MATURITIES TRUST: 2020
TARGET MATURITIES TRUST: 2025

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

[inside front cover]

AMERICAN CENTURY KEEPS WITH TRADITION
- --------------------------------------------------------------------------------

FOLLOWING BENHAM'S FOOTSTEPS

On March 1, we made it easier for you to do business with us. We simplified  our
organizational  structure by  eliminating  the  venerable  Benham and  Twentieth
Century names, and putting all our funds under American Century. The name change
will not affect your funds' investment  management--the proven Benham investment
philosophy, experienced portfolio management teams, and legacy of innovation and
high-quality performance remain.

CONSISTENT,  SOLID  PERFORMANCE--We'll  continue  to  adhere  to the  investment
practices  that have  helped  our  fixed-income  funds  perform so well over the
years. In 1998,  two-thirds of American Century bond funds beat their peer group
average, according to Lipper, Inc.

CONSISTENT  INVESTMENT  PHILOSOPHY--American  Century  fixed-income  funds  will
continue to offer a "pure play" on their sector of the market, as they did under
Benham.

CONTINUITY  OF THE  MANAGEMENT  TEAM--The  investment  process  is not all  that
remains  the same;  we've  retained  our core team of  experienced  fixed-income
portfolio managers.

    *  Experience--The  more than 35 fixed-income  investment  professionals  at
       American  Century have an average of nine years of investment  management
       experience.

    *  Bigger and better--Since  American Century was formed,  we've doubled the
       size  of the  original  Benham  management  team  in our  Mountain  View,
       California office.

TRADITION OF INNOVATION--Like  Benham before it, American Century is a leader in
fixed-income  fund  innovation.  For example,  we introduced a total of four new
fixed-income  funds  in the  last  three  years,  including  the  first  no-load
inflation-adjusted bond fund.

We continue to run our fixed-income operation from our offices in Mountain View,
California, which is also home to our walk-in Investor Center.

We look forward to continuing to meet your fixed-income  investment needs in the
Benham tradition.

WHAT'S NEW . . .

     We now classify our funds in easy-to-remember categories based on objective
and risk. The four  objective  categories  are:  CAPITAL  PRESERVATION,  INCOME,
GROWTH AND INCOME,  and GROWTH.  The three risk  categories  are:  CONSERVATIVE,
MODERATE,  and AGGRESSIVE.  This new  classification  system makes it easier for
investors to identify which funds are right for them.

     Turn to the  inside  back  cover of this  report to see a list of the funds
classified by objective and risk. For  definitions of the fund  categories,  see
the Glossary.

Past performance is no guarantee of future results.

[left margin]

Target Maturities Trust: 2000
(BTMTX)
- -----------------------------

Target Maturities Trust: 2005
(BTFIX)
- -----------------------------

Target Maturities Trust: 2010
(BTTNX)
- -----------------------------

Target Maturities Trust: 2015
(BTFTX)
- -----------------------------

Target Maturities Trust: 2020
(BTTTX)
- -----------------------------

Target Maturities Trust: 2025
(BTTRX)
- -----------------------------


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.

     The U.S. Treasury bond market experienced a remarkable  reversal during the
six months ended March 31, 1999. When we last addressed you in the Target funds'
annual report,  the market had just rallied as investors  rushed to the relative
safety and liquidity of Treasury  securities.  Investors  were spooked by global
economic and financial  turmoil,  which also motivated the Federal  Reserve (the
U.S.  central  bank) to cut  short-term  interest  rates to bolster a  seemingly
vulnerable U.S. economy and help stabilize markets worldwide.

     The Fed's actions  helped turn things  around.  By January  1999,  overseas
economies were  stabilizing,  the U.S.  economy was posting  strong growth,  and
investor  confidence  had  rebounded.  As a result,  investors sold Treasurys in
favor of stocks  and  higher-yielding  bonds,  and the  zero-coupon  bonds  that
comprise the Target funds gave back their earlier gains.

     It  was  also  an  exciting  period  at  American  Century.  In  March,  we
consolidated all our funds under the American Century name.  Though we are proud
of the venerable Twentieth Century and Benham names, we believe the change makes
it simpler for you to identify your funds.

     We also  reclassified  all 71 of our 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.

     In  addition,  we made some  enhancements  to our Web  site.  Among the new
features are daily fund information, including return 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.

     Finally,  here's our latest Year 2000  Readiness  Disclosure.  Our critical
systems have been renovated,  tested, and returned to production. We continue to
test these  systems,  as well as  participate  in  industry-wide  tests with our
business partners.

     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        Chief Executive Officer

[right margin]

                 Table of Contents
   Report Highlights ......................................................    2
   Market Perspective .....................................................    4
TARGET: 2000
   Performance Information ................................................    5
   Management Q&A .........................................................    6
   Schedule of Investments ................................................    8
TARGET: 2005
   Performance Information ................................................   10
   Management Q&A .........................................................   11
   Schedule of Investments ................................................   13
TARGET: 2010
   Performance Information ................................................   14
   Management Q&A .........................................................   15
   Schedule of Investments ................................................   17
TARGET: 2015
   Performance Information ................................................   18
   Management Q&A .........................................................   19
   Schedule of Investments ................................................   21
TARGET: 2020
   Performance Information ................................................   22
   Management Q&A .........................................................   23
   Schedule of Investments ................................................   25
TARGET: 2025
   Performance Information ................................................   26
   Management Q&A .........................................................   27
   Schedule of Investments ................................................   29
FINANCIAL STATEMENTS
   Statements of Assets and
      Liabilities .........................................................   30
   Statements of Operations ...............................................   32
   Statements of Changes
      in Net Assets .......................................................   34
   Notes to Financial
      Statements ..........................................................   36
   Financial Highlights ...................................................   41
OTHER INFORMATION
   Share Class and Retirement
     Account Information ..................................................   52
   Background Information
      Investment Philosophy
         and Policies .....................................................   53
      Comparative Indices .................................................   53
      Fund Benchmarks .....................................................   53
      Investment Team
         Leaders ..........................................................   53
   Glossary ...............................................................   54


                                                  www.americancentury.com      1


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

MARKET PERSPECTIVE

*   Zero-coupon U.S. Treasury securities (zeros) produced  disappointing returns
    as interest rates rose during the six months ended March 31, 1999.

*   Short-term   zeros--less   sensitive  to  interest  rate  fluctuations  than
    long-term zeros--were somewhat insulated and managed to post mild gains.

*   Late in 1998, global financial crises and floundering stock and bond markets
    sparked "safe-haven" buying of Treasurys, boosting prices and sending yields
    to historic lows.

*   Worried by the continued  downshifting  of the global  economy,  the Fed cut
    short-term  interest  rates three times  between  September  and November to
    provide  needed  liquidity  to  global  credit  markets  and  shore  up U.S.
    prospects.

*   Despite market expectations for further rate reductions and slower U.S.
    growth, neither materialized.

*   Treasury prices fell as overseas markets gained a modicum of stability,  the
    Fed changed to a neutral stance on short-term  interest rates,  and the U.S.
    economy proved surprisingly robust.

TARGET: 2000

*   Target: 2000's returns were modest, in spite of the overall rise in interest
    rates during the six months.

*   To meet the roughly $20 million in cash outflows that the fund  experienced,
    we sold some of the portfolio's STRIPS position.

*   The net result was a decrease in the portfolio's  exposure to STRIPS,  which
    fell from 40% of assets to 30%. Correspondingly,  the portfolio's percentage
    of TRs and REFCORPs rose.

*   Although the  opportunities  to add  higher-yielding  zeros such as REFCORPs
    have decreased as Target: 2000's maturity date approaches,  we will continue
    to search for such potentially return-enhancing buys.

TARGET: 2005

*   Reflecting the overall rise in interest rates during the six months, Target:
    2005 posted negative returns.

*   The fund  received  roughly  $30 million in new  investments  during the six
    months, and while we were able to find some attractive receipt zeros for the
    portfolio, most of the new capital was put to work in STRIPS.

*   As a result,  the  portfolio's  STRIPS  position  increased to around 59% of
    assets, while the amount of Treasury Receipts  (TRs--generic  receipt zeros)
    rose to 13%, and REFCORPs fell to 7%.

*   We  will  continue  to  manage  Target:  2005  to  deliver  a pure  play  on
    zero-coupon bonds maturing in 2005.

[left margin]

                TARGET: 2000(1)
                    (BTMTX)
TOTAL RETURNS:                  AS OF 3/31/99
    6 Months                         0.85%(2)
    1 Year                              6.21%
INCEPTION DATE:                       3/25/85
NET ASSETS:                 $213.5 million(3)

                TARGET: 2005(1)
                    (BTFIX)
TOTAL RETURNS:                  AS OF 3/31/99
    6 Months                        -3.87%(2)
    1 Year                              7.62%
INCEPTION DATE:                       3/25/85
NET ASSETS:                 $557.2 million(3)

                TARGET: 2010(1)
                    (BTTNX)
TOTAL RETURNS:                  AS OF 3/31/99
    6 Months                        -7.34%(2)
    1 Year                              7.39%
INCEPTION DATE:                       3/25/85
NET ASSETS:                 $243.5 million(3)

(1)  Investor Class.
(2)  Not annualized.
(3)  Includes Investor and Advisor Classes.

See Total  Returns on pages 5, 10, and 14.  Investment  terms are defined in the
Glossary on pages 54-55.


2      1-800-345-2021


Report Highlights
- --------------------------------------------------------------------------------
                                                                    (Continued)

TARGET: 2010

*   Reflecting the overall rise in interest rates during the six months, Target:
    2010 posted negative returns.

*   To meet the roughly $18 million in cash outflows that the fund  experienced,
    we sold STRIPS,  primarily ones maturing  around May 2010.  Additions to the
    portfolio included some REFCORPs that mature around April and October 2010.

*   The net  result  was a  25-day  extension  of the  fund's  weighted  average
    maturity date to November 10, 2010,  and an increase of sixty-five  cents to
    Target: 2010's anticipated value at maturity.

*   Going forward,  we'll continue to look for attractive  opportunities  to add
    higher-yielding zeros to the portfolio.

TARGET: 2015

*   Reflecting the overall rise in interest rates during the six months, Target:
    2015 posted negative returns.

*   The fund  received  nearly  $60  million in new  investments  during the six
    months,  and  while we were able to find some  attractive  REFCORPs  for the
    portfolio, most of the new capital was put to work in STRIPS.

*   As a result, the portfolio's STRIPS position increased from 50% of assets to
    63%, while the amount of REFCORPs fell from 50% to 37%.

*   We  will  continue  to  manage  Target:  2015  to  deliver  a pure  play  on
    zero-coupon bonds maturing in 2015.

TARGET: 2020

*   Reflecting the overall rise in interest rates during the six months, Target:
    2020 posted negative returns.

*   To meet the roughly $100 million in cash outflows that the fund experienced,
    we sold STRIPS and REFCORPs.

*   Although many of the trends that caused  Treasury  prices to rise at the end
    of 1998  disappeared  during  the  first  quarter  of  1999,  some  positive
    influences, such as low inflation, remain in place.

*   Going forward,  we'll continue to look for attractive  opportunities  to add
    REFCORPs to the portfolio.

TARGET: 2025

*   Reflecting the overall rise in interest rates during the six months, Target:
    2025 posted negative returns.

*   The fund  received  roughly $100 million in new  investments  during the six
    months, and nearly all of the capital was put to work in STRIPS.

*   As a result, the portfolio's STRIPS position increased from 67% of assets to
    76%, while the amount of REFCORPs fell from 33% to only 24%.

*   We  will  continue  to  manage  Target:  2025  to  deliver  a pure  play  on
    zero-coupon bonds maturing in 2025.

[right margin]

               TARGET: 2015(1)
                   (BTFTX)
TOTAL RETURNS:                AS OF 3/31/99
    6 Months                      -8.78%(2)
    1 Year                            5.62%
INCEPTION DATE:                      9/1/86
NET ASSETS:                  $229.8 million

               TARGET: 2020(1)
                   (BTTTX)
TOTAL RETURNS:                AS OF 3/31/99
    6 Months                     -10.69%(2)
    1 Year                            5.36%
INCEPTION DATE:                    12/29/89
NET ASSETS:               $362.8 million(3)

                TARGET: 2025(1)
                   (BTTRX)
TOTAL RETURNS:                AS OF 3/31/99
    6 Months                     -11.27%(2)
    1 Year                            8.33%
INCEPTION DATE:                     2/15/96
NET ASSETS:               $442.0 million(3)

(1)  Investor Class.
(2)  Not annualized.
(3)  Includes Investor and Advisor Classes.

See Total Returns on pages 18, 22, and 26.  Investment  terms are defined in the
Glossary on pages 54-55.


                                                  www.americancentury.com      3


Market Perspective from Randall W. Merk
- --------------------------------------------------------------------------------
/photo of Randall W. Merk/
Randall W. Merk, chief investment officer of fixed income

LACKLUSTER PERFORMANCE

     Zero-coupon U.S. Treasury securities (zeros) produced disappointing returns
as interest  rates rose during the six months ended March 31,  1999.  Short-term
zeros--less  sensitive to interest rate fluctuations than long-term  zeros--were
somewhat insulated and managed to post mild gains. (See the accompanying table.)

UNSUSTAINABLE PRICES

     The final  quarter of 1998 began on an upbeat  note for  Treasurys.  Global
financial  crises and floundering  stock and bond markets  sparked  "safe-haven"
buying of Treasurys,  boosting prices. Treasurys also benefited from a series of
interest rate cuts by central  banks,  including the U.S.  Federal  Reserve (the
Fed). Worried by the continued  downshifting of the global economy,  the Fed cut
short-term  interest rates three times between September and November to provide
needed liquidity to global credit markets and shore up U.S. economic prospects.

     Treasurys--considered  among the safest and most liquid  investments in the
world--rallied  and yields fell to historic lows. For example,  the yield on the
two-year  note fell to 4.06% in  October,  tying its  lowest  level in the '90s,
while the 30-year bond's yield fell to an all-time low of 4.71%.

     But despite market expectations for further rate reductions and slower U.S.
growth, neither materialized.  Buoyed by the Fed's rate cuts,  historically high
employment,  and solid consumer  spending--the backbone of U.S. growth in recent
years--the  economy grew at a surprisingly brisk 6% annual pace during the final
three months of 1998.

     By  mid-December,  Treasury  prices  began to  tumble as  investors  became
increasingly  convinced that the economy's eight-year expansion was in no danger
of slowing anytime soon.

THE FED CHANGES ITS STANCE

     After  edging  lower in early 1999 amid  increased  global  stability,  the
downward  momentum  of bond  prices  accelerated  in February in the wake of Fed
chairman Alan Greenspan's semiannual testimony on the state of the U.S. economy.
By the end of his speeches, Mr. Greenspan had confirmed what Treasury prices had
already begun to  reflect--namely  that the Fed was satisfied with the health of
the U.S. and global  economies  and had adopted a neutral  stance  toward rates.
That is,  the Fed stood  ready to move  interest  rates in either  direction  to
maintain economic stability.

     With the likelihood of further rate reductions  officially removed from the
horizon,  Treasury  yields  continued to rise as subdued  demand from  investors
caused prices to fall. By the end of March, as demonstrated by the  accompanying
graph,  zero-coupon  Treasury yields were  substantially  higher than where they
were six months earlier.

[left margin]

"ZERO-COUPON U.S. TREASURY SECURITIES PRODUCED DISAPPOINTING RETURNS AS INTEREST
RATES ROSE DURING THE SIX MONTHS ENDED MARCH 31, 1999."

[line graph - data below]

RISING YIELD CURVE
FOR TREASURY ZEROS

Years to Maturity        10/1/98          3/31/99
1                         4.41%            4.88%
2                         4.24%            5.04%
3                         4.23%            5.16%
4                         4.19%            5.20%
5                         4.22%            5.25%
6                         4.29%            5.35%
7                         4.36%            5.44%
8                         4.42%            5.45%
9                         4.45%            5.53%
10                        4.59%            5.63%
11                        4.66%            5.68%
12                        4.73%            5.73%
13                        4.81%            5.77%
14                        4.88%            5.82%
15                        4.95%            5.87%
16                        4.99%            5.88%
17                        5.03%            5.90%
18                        5.07%            5.91%
19                        5.11%            5.93%
20                        5.15%            5.94%
21                        5.14%            5.93%
22                        5.14%            5.92%
23                        5.13%            5.92%
24                        5.13%            5.91%
25                        5.12%            5.90%
26                        5.11%            5.88%
27                        5.10%            5.86%
28                        5.08%            5.85%
29                        5.07%            5.83%
30                        5.06%            5.81%

ZERO-COUPON TREASURY BOND RETURNS
(FOR THE SIX MONTHS ENDED 3/31/99)*

Coupon STRIPS maturing 11/15/00 1.17%
Coupon STRIPS maturing 11/15/05 -3.28%
Coupon STRIPS maturing 11/15/10 -7.20%
Coupon STRIPS maturing 11/15/15 -8.78%
Coupon STRIPS maturing 11/15/20 -10.68%
Coupon STRIPS maturing 11/15/25 -11.11%

* Not annualized.

Source: Bloomberg Financial Markets


4      1-800-345-2021


Target: 2000--Performance
- --------------------------------------------------------------------------------

TOTAL RETURNS AS OF MARCH 31, 1999

<TABLE>
                           INVESTOR CLASS (INCEPTION 3/25/85)                      ADVISOR CLASS (INCEPTION 8/20/98)
                      TARGET           11/15/00       MERRILL LYNCH         TARGET           11/15/00        MERRILL LYNCH
                    MATURITIES         MATURITY         LONG-TERM         MATURITIES         MATURITY          LONG-TERM
                    TRUST: 2000      STRIPS ISSUE     TREASURY INDEX      TRUST: 2000      STRIPS ISSUE      TREASURY INDEX
<S>                 <C>              <C>               <C>                <C>               <C>                <C>
6 MONTHS(1)            0.85%            1.17%            -5.16%              0.74%             1.17%             -5.16%
1 YEAR                 6.21%            6.75%             7.07%               --                --                 --
========================================================================================================================
AVERAGE ANNUAL RETURNS
========================================================================================================================
3 YEARS                6.31%            6.79%             9.88%               --                --                 --
5 YEARS                6.82%            7.33%             9.71%               --                --                 --
10 YEARS               9.74%           10.22%            10.88%               --                --                 --
LIFE OF FUND          11.92%           13.22%(2)         11.95%(2)           3.33%           2.81%(3)           -1.68%(3)
</TABLE>
(1) Returns for periods less than one year are not annualized.

(2) Since  3/31/85,  the date nearest the class's  inception  for which data are
    available.

(3) Since  8/31/98,  the date nearest the class's  inception  for which data are
    available.

See  pages  52-54  for  more  information  about  share  classes,  returns,  the
comparative index, and the fund's benchmark.

[mountain chart - data below]

GROWTH OF $10,000 OVER 1O YEARS
Value on 3/31/99
Target: 2000                $25,336
Merrill Lynch Long-Term
   Treasury Index           $28,093
11/15/00 STRIPS Issue       $26,473

                   Target:        Merrill Lynch Long-Term        11/15/00
                    2000               Treasury Index          STRIPS Issue
DATE                VALUE                  VALUE                  VALUE
3/31/89            $10,000                $10,000                $10,000
3/31/90            $11,410                $11,288                $11,469
3/31/91            $12,891                $12,761                $13,053
3/31/92            $14,562                $14,298                $14,773
3/31/93            $17,810                $17,083                $18,163
3/31/94            $18,215                $17,675                $18,590
3/31/95            $18,880                $18,457                $19,382
3/31/96            $21,087                $21,179                $21,737
3/31/97            $21,852                $21,776                $22,614
3/31/98            $23,854                $26,238                $24,799
3/31/99            $25,336                $28,093                $26,473

$10,000 investment made 3/31/89

The graph at left shows the growth of a $10,000  investment  in the fund over 10
years.  The Merrill Lynch Long-Term  Treasury Index and the fund's benchmark are
provided for  comparison.  The Target:  2000  portfolio's  total return includes
operating  expenses (such as transaction  costs and management fees) that reduce
returns, while the total returns of the index and the benchmark do not.

[line chart - data below]

SHARE PRICE VS. ANTICIPATED VALUE AT MATURITY
TARGET: 2000
Actual Share Price (Historical)    $94.58
Anticipated Value at Maturity
  (Estimated Share Price)         $101.71

          Actual Share Price      Anticipated Value at Maturity
             (Historical)            (Estimated Share Price)
1985            $26.77                       $100
                $35.44                       $100
                $33.33                       $98.69
                $37.16                       $97.43
                $44.52                       $96.21
1990            $47.33                       $97.59
                $57.11                       $98.91
                $61.947                      $101.16
                $71.526                      $100.708
                $66.598                      $100.829
1995            $80.408                      $100.992
                $79.947                      $101.102
                $86.06                       $101.13
                $93.78                       $101.78
                $94.58                       $101.71
2000

The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 54), which fluctuates from day to day based on the fund's
expected  maturity date. The bottom line represents the fund's  historical share
price,  which is managed to grow over time to reach the fund's  AVM.  While this
graph demonstrates the fund's expected long-term growth pattern,  please keep in
mind that the fund may experience  significant  share-price  volatility over the
short term. Even if fund shares are held to maturity, there is no guarantee that
the fund's share price will reach its AVM.  There is also no guarantee  that the
AVM will fluctuate as little in the future as it has in the past.

Both 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 is no guarantee of future  results.  Investment
return and principal value will fluctuate,  and redemption  value may be more or
less than original cost.


                                                  www.americancentury.com      5


Target: 2000--Q&A
- --------------------------------------------------------------------------------
/photo of Dave Schroeder/

     An  interview  with Dave  Schroeder,  a  portfolio  manager  on the  Target
Maturities Trust investment team.

HOW DID THE FUND PERFORM DURING THE SIX-MONTH PERIOD ENDED MARCH 31, 1999?

     Target: 2000 provided mildly positive returns, in spite of the overall rise
in  interest  rates.  For the six months  ended  March 31,  1999,  Target:  2000
returned  0.85%,*  compared  with the 1.17%  return of the fund's  benchmark,  a
STRIPS issue  maturing on November 15,  2000.  (See the previous  page for other
fund performance comparisons.)

     Please keep in mind that Target: 2000, unlike its benchmark,  is subject to
transaction costs and management fees. To keep the fund's after-expense  returns
as close as possible to those of the benchmark,  we try to keep the  portfolio's
weighted  average  maturity  date in the fourth  quarter of the target  year and
adjust its mix of zero-coupon bonds (zeros).

SPEAKING OF ADJUSTMENTS TO THE PORTFOLIO, WHAT CHANGES DID YOU MAKE?

     To  minimize  Target:  2000's  transaction  costs  and  turnover  rate,  we
continued  to use cash  inflows  and  outflows  as  opportunities  to adjust the
portfolio's  composition  and its weighted  average  maturity  date. To meet the
roughly $20 million in outflows that the fund experienced,  we sold STRIPS.  The
net result was a decrease in the portfolio's  STRIPS  position,  which fell from
40% of  assets  to  30%.  Correspondingly,  the  portfolio's  percentage  of TRs
(Treasury Receipts--generic receipt zeros) and REFCORPs rose. (See the charts on
page 7.)

WHY DID YOU SELL STRIPS INSTEAD OF OTHER TYPES OF ZEROS?

     By selling STRIPS,  we were able to meet the fund's liquidity needs without
sacrificing  returns.  That's  because  STRIPS  generally  have lower yields and
higher prices than REFCORPs or other non-STRIP holdings.

WHAT IMPACT DID THESE CHANGES HAVE ON TARGET: 2000'S WEIGHTED AVERAGE MATURITY
DATE?

     They caused it to move forward  roughly 12 days to November 19, 2000.  Many
of the STRIPS that we sold mature in November  2001;  they had  slightly  longer
maturities  than many others in the  portfolio.  So selling  them  resulted in a
shorter  average  maturity  date for the  portfolio,  which  caused  the  fund's
anticipated value at maturity to edge seven cents lower.

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

[left margin]

"BY SELLING  STRIPS,  WE WERE ABLE TO MEET THE FUND'S  LIQUIDITY  NEEDS  WITHOUT
SACRIFICING RETURNS."

PORTFOLIO AT A GLANCE
                            3/31/99           9/30/98
NUMBER OF SECURITIES           55                52
ANTICIPATED GROWTH
   RATE                       4.50%             3.81%
WEIGHTED AVERAGE
   MATURITY DATE            11/19/00          12/01/00
ANTICIPATED VALUE AT
   MATURITY (AVM)(1)         $101.71           $101.78
EXPENSE RATIO (FOR
   INVESTOR CLASS)          0.59%(2)            0.59%

Past performance is no guarantee of future results. Even if fund shares are held
to maturity,  there is no  guarantee  that the fund's share price will reach its
AVM.  There is also no  guarantee  that the AVM will  fluctuate as little in the
future  as it has  in  the  past.  For  more  information,  please  consult  the
prospectus.

(1)  See graph on page 5.
(2)  Annualized.

Investment terms are defined in the Glossary on pages 54-55.


6      1-800-345-2021


Target: 2000--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

     As that slight decrease in average maturity demonstrates, we generally keep
the fund's average maturity date fairly close to that of its benchmark. By using
such an approach,  we are able to take  advantage of  attractive  opportunities,
while helping to ensure that the fund's  long-term  performance  closely  tracks
that of the November 15, 2000 STRIPS.

GOING FORWARD, WHAT'S YOUR OUTLOOK FOR THE TREASURY MARKET?

     Many of the trends that caused  Treasury  prices to rise at the end of 1998
disappeared during the first quarter of 1999. On the international  front, Asian
and Latin American  economies  seem to have recovered  somewhat from last year's
crises.  With global markets looking less grim,  "flight-to-quality"  demand for
Treasurys has decreased.  Domestically,  economic  growth  remains  surprisingly
robust--during  the first quarter of 1999, the economy expanded at a 4.5% annual
pace.

     However,  some positive  influences  remain in place.  Inflation is still a
non-issue--prices  rose a mere 1.7% for the  twelve  months  ended  March 31 (as
measured by the government's  consumer price index). As such, we believe there's
little incentive for the Fed to raise interest rates in the near future.

     The first  federal  budget  surplus  in 30 years is also  having a positive
impact on Treasury  prices by reducing the amount of new Treasury bond issuance.
Last year the Treasury Department  discontinued quarterly auctions of three-year
Treasury notes and began auctioning  five-year Treasury notes quarterly,  rather
than monthly. A 30-year bond auction was also eliminated.

     We  wouldn't  be  surprised  if that  trend  continued.  There's  been some
discussion about the Treasury  Department  reducing  two-year note auctions from
monthly to only eight times a year. In addition,  the  elimination of one of the
Treasury's  30-year bond  auctions--which  would reduce the number to only two a
year--is also a possibility.

WITH THAT OUTLOOK IN MIND, WHAT ARE YOUR PLANS FOR THE PORTFOLIO?

     Although there's no assurance that Target:  2000 will reach its anticipated
value at maturity,  we will continue to focus our efforts to try to meet or beat
that value.  To try and achieve that goal,  we will  continue to manage  Target:
2000 to  deliver  a pure  play on  zero-coupon  bonds in an  effort  to  provide
shareholders  the total return and interest rate  sensitivity of a zero maturing
on November 15, 2000.  We will also continue to use cash inflows and outflows as
opportunities  to  adjust  the  portfolio's  composition  and  weighted  average
maturity. That should help keep turnover and transaction costs to a minimum.

[right margin]

"MANY OF THE  TRENDS  THAT  CAUSED  TREASURY  PRICES  TO RISE AT THE END OF 1998
DISAPPEARED DURING THE FIRST QUARTER OF 1999."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

As of March 31, 1999
STRIPS             30%
TRs                43%
REFCORPs           14%
BECCs               4%
Other               9%

As of September 30, 1998
STRIPS             40%
TRs                36%
REFCORPs           11%
BECCs               5%
Other               8%

Security types are defined on pages 54-55.


                                                  www.americancentury.com      7


Target: 2000--Schedule of Investments
- --------------------------------------------------------------------------------

MARCH 31, 1999 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. TREASURY SECURITIES (1)--85.6%
           $      18,144   TBR, 5.83%, 5/15/99                    $     18,038
               1,298,250   CUBES, 5.07%, 8/15/99                     1,275,324
                  75,000   ETR, 5.26%, 11/15/99                         72,766
                  81,000   ETR, 5.63%, 11/15/99                         78,587
                 153,000   STRIPS--COUPON, 5.40%,
                              11/15/99                                 148,632
               2,000,000   STRIPS--PRINCIPAL, 4.88%,
                              11/15/99                               1,942,369
               2,836,700   TBR, 7.83%, 11/15/99                      2,752,535
                  75,000   TR, 5.20%, 11/15/99                          72,788
                 349,800   TR, 5.46%, 11/15/99                         339,483
                 133,000   CATS, 5.22%, 2/15/00                        127,414
                  88,125   CUBES, 8.60%, 2/15/00                        84,431
                 100,000   STRIPS--COUPON, 4.63%,
                              2/15/00                                   95,907
              14,100,000   STRIPS--PRINCIPAL, 5.28%,
                              2/15/00                               13,516,503
                 306,945   TBR, 8.80%, 2/15/00                         293,904
              29,708,220   TR, 6.69%, 2/15/00                       28,453,268
                  28,146   TR, 8.50%, 2/15/00                           26,957
                 199,843   TR, 8.88%, 2/15/00                          191,401
                 100,000   TR, 9.28%, 2/15/00                           95,776
                 645,525   TBR, 8.62%, 5/15/00                         610,609
                 849,000   TBR, 8.72%, 5/15/00                         803,079
               5,000,000   CUBES, 5.50%, 8/15/00                     4,665,950
                 633,000   STRIPS--COUPON, 5.71%,
                              8/15/00                                  591,661
               5,667,000   STRIPS--PRINCIPAL, 7.14%,
                              8/15/00                                5,296,911
                 894,045   TBR, 8.72%, 8/15/00                         833,531
              15,427,980   TR, 4.89%, 8/15/00                       14,462,181
                 500,000   STRIPS--COUPON, 4.16%,
                              11/15/00                                 461,667
              13,391,000   STRIPS--PRINCIPAL, 8.17%,
                              11/15/00                              12,364,368
                 289,250   TBR, 5.63%, 11/15/00                        266,273
                  29,600   TR, 8.49%, 11/15/00                          27,262
                     843   TR, 9.43%, 11/15/00                             776
                  75,000   CATS, 5.34%, 2/15/01                         68,171

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

            $  1,700,000   STRIPS--PRINCIPAL, 5.57%,
                              2/15/01                             $  1,549,316
                  87,280   TBR, 5.63%, 2/15/01                          79,246
               4,657,000   TIGR, 5.52%, 2/15/01                      4,232,974
               3,933,650   TR, 5.52%, 2/15/01                        3,573,525
               2,052,928   TR, 5.87%, 2/15/01                        1,864,983
               4,435,750   TR, 6.92%, 2/15/01                        4,029,658
              10,000,000   TR, 7.80%, 2/15/01                        9,084,501
               1,400,000   COUGAR, 5.63%, 5/15/01                    1,253,978
               1,496,250   CUBES, 6.21%, 5/15/01                     1,340,189
                  44,000   TIGR, 5.39%, 5/15/01                         39,468
              21,150,000   TR, 7.06%, 5/15/01                       18,959,701
              14,235,000   STRIPS--PRINCIPAL, 7.44%,
                              8/15/01                               12,634,233
               6,320,000   TR, 4.84%, 8/15/01                        5,589,845
               7,060,020   TR, 5.38%, 8/15/01                        6,244,370
               8,900,000   BEC, 5.99%, 11/15/01                      7,761,486
              17,100,000   STRIPS--PRINCIPAL, 4.89%,
                              11/15/01                              14,979,348
                                                                 --------------
TOTAL ZERO-COUPON U.S.
TREASURY SECURITIES                                                183,255,343
                                                                 --------------
   (Cost $179,830,314)

ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES(1)--14.4%
              10,000,000   REFCORP STRIPS--COUPON,
                              4.93%, 1/15/00                         9,614,379
               8,000,000   REFCORP STRIPS--COUPON,
                              5.55%, 4/15/00                         7,609,314
               8,442,000   REFCORP STRIPS--COUPON,
                              5.59%, 10/15/00                        7,817,318
               3,200,000   REFCORP STRIPS--COUPON,
                              5.67%, 4/15/01                         2,885,498
               3,215,000   REFCORP STRIPS--COUPON,
                              5.70%, 10/15/01                        2,823,590
                                                                 --------------
TOTAL ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES                                                   30,750,099
                                                                 --------------
   (Cost $30,578,244)

TOTAL INVESTMENT SECURITIES--100.0%                               $214,005,442
                                                                 ==============
   (Cost $210,408,558)

See Notes to Financial Statements


8      1-800-345-2021


Target: 2000--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
MARCH 31, 1999 (UNAUDITED)

NOTES TO SCHEDULE OF INVESTMENTS

BEC = Book Entry Corpus

CATS = Certificates of Accrual of Treasury Securities

COUGAR = Coupons on Underlying Government Securities

CUBES = Coupons Under Book Entry Safekeeping

ETR = Easy Growth Treasury Receipts

REFCORP = Resolution Funding Corporation

STRIPS = Separate Trading of Registered Interest and Principal of Securities

TBR = Treasury Bond Receipts

TIGR = Treasury Investment Growth Receipts

TR = Treasury Receipts

(1)  Rates indicated are the yield to maturity at purchase. These securities are
     purchased at a substantial discount from their value at maturity.

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

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

See Notes to Financial Statements


                                                  www.americancentury.com      9


Target: 2005--Performance
- --------------------------------------------------------------------------------

TOTAL RETURNS AS OF MARCH 31, 1999

<TABLE>
                           INVESTOR CLASS (INCEPTION 3/25/85)                        ADVISOR CLASS (INCEPTION 8/3/98)
                      TARGET           11/15/05       MERRILL LYNCH           TARGET           11/15/05        MERRILL LYNCH
                    MATURITIES         MATURITY         LONG-TERM           MATURITIES         MATURITY          LONG-TERM
                    TRUST: 2005      STRIPS ISSUE     TREASURY INDEX        TRUST: 2005      STRIPS ISSUE      TREASURY INDEX
<S>                 <C>              <C>               <C>                  <C>               <C>                <C>
6 MONTHS(1)           -3.87%           -3.28%            -5.16%               -4.02%            -3.28%             -5.16%
1 YEAR                 7.62%            8.56%             7.07%                 --                --                 --
==========================================================================================================================
AVERAGE ANNUAL RETURNS
==========================================================================================================================
3 YEARS                8.81%            9.40%             9.88%                 --                --                 --
5 YEARS                9.49%           10.05%             9.71%                 --                --                 --
10 YEARS              11.61%           11.86%            10.88%                 --                --                 --
LIFE OF FUND          13.91%           15.51%(2)         11.95%(2)             3.81%             5.23%              2.79%
</TABLE>
(1) Returns for periods less than one year are not annualized.

(2) Since  3/31/85,  the date nearest the class's  inception  for which data are
    available.

See  pages  52-54  for  more  information  about  share  classes,  returns,  the
comparative index, and the fund's benchmark.

[mountain chart - data below]

GROWTH OF $10,000 OVER 1O YEARS
Value on 3/31/99
Target: 2005                $30,004
Merrill Lynch Long-Term
   Treasury Index           $28,093
11/15/05 STRIPS Issue       $30,671

                   Target:        Merrill Lynch Long-Term        11/15/05
                    2005               Treasury Index          STRIPS Issue
DATE                VALUE                  VALUE                  VALUE
3/31/89            $10,000                $10,000                $10,000
3/31/90            $11,342                $11,288                $11,272
3/31/91            $12,897                $12,761                $12,852
3/31/92            $14,593                $14,298                $14,559
3/31/93            $18,356                $17,083                $18,393
3/31/94            $19,072                $17,675                $19,000
3/31/95            $20,085                $18,457                $20,065
3/31/96            $23,287                $21,179                $23,428
3/31/97            $23,820                $21,776                $24,042
3/31/98            $27,881                $26,238                $28,254
3/31/99            $30,004                $28,093                $30,671

$10,000 investment made 3/31/89

The graph at left shows the growth of a $10,000  investment  in the fund over 10
years.  The Merrill Lynch Long-Term  Treasury Index and the fund's benchmark are
provided for  comparison.  The Target:  2005  portfolio's  total return includes
operating  expenses (such as transaction  costs and management fees) that reduce
returns, while the total returns of the index and the benchmark do not.

[line chart - data below]

SHARE PRICE VS. ANTICIPATED VALUE AT MATURITY
TARGET: 2005
Actual Share Price (Historical)    $73.75
Anticipated Value at Maturity
  (Estimated Share Price)         $101.07

          Actual Share Price      Anticipated Value at Maturity
             (Historical)            (Estimated Share Price)
1985            $16.69                       $98
                $23.74                       $97
                $21.28                       $94.59
                $24.36                       $93.66
                $30.18                       $93.14
1990            $31.26                       $97.25
                $37.97                       $99.29
                $41.597                      $99.625
                $50.575                      $100.087
                $46.066                      $100.516
1995            $61.108                      $100.34
                $57.829                      $100.707
                $64.54                       $100.85
                $76.72                       $101.53
                $73.75                       $101.07
2000




2005

The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 54), which fluctuates from day to day based on the fund's
expected  maturity date. The bottom line represents the fund's  historical share
price,  which is managed to grow over time to reach the fund's  AVM.  While this
graph demonstrates the fund's expected long-term growth pattern,  please keep in
mind that the fund may experience  significant  share-price  volatility over the
short term. Even if fund shares are held to maturity, there is no guarantee that
the fund's share price will reach its AVM.  There is also no guarantee  that the
AVM will fluctuate as little in the future as it has in the past.

Both 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 is no guarantee of future  results.  Investment
return and principal value will fluctuate,  and redemption  value may be more or
less than original cost.


10      1-800-345-2021


Target: 2005--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

     An interview with Dave Schroeder  (pictured on page 6), a portfolio manager
on the Target Maturities Trust investment team.

HOW DID THE FUND PERFORM DURING THE SIX-MONTH PERIOD ENDED MARCH 31, 1999?

     Reflecting the overall rise in interest rates, Target: 2005 posted negative
returns.  For the six months  ended March 31,  1999,  Target:  2005 fell 3.87%,*
compared with the 3.28% decline of the fund's benchmark, a STRIPS issue maturing
on  November  15,  2005.  (See the  previous  page for  other  fund  performance
comparisons.)

     It's important to remember  that,  unlike its  benchmark,  Target:  2005 is
subject  to  transaction   costs  and  management   fees.  To  keep  the  fund's
after-expense returns as close as possible to those of the benchmark, we attempt
to enhance performance through  conservative changes to the portfolio's weighted
average maturity date and by adjusting its mix of zero-coupon bonds (zeros).

SPEAKING OF PORTFOLIO ADJUSTMENTS, WHAT CHANGES DID YOU MAKE?

     To  minimize  Target:  2005's  transaction  costs  and  turnover  rate,  we
continued  to use cash  inflows  and  outflows  as  opportunities  to adjust the
portfolio's  composition  and its  weighted  average  maturity  date.  The  fund
received roughly $30 million in new investments during the six months, and while
we were able to find some  attractive  receipt zeros for the portfolio,  most of
the new capital was put to work in STRIPS.

     We also liquidated some of the fund's REFCORPs because they were trading at
very attractive  prices. As a result,  the portfolio's STRIPS position increased
to around 59% of assets,  while the amount of  Treasury  Receipts  (TRs--generic
receipt zeros) rose to 13%, and REFCORPs fell to 7%.

WHY DID YOU ADD MORE STRIPS THAN OTHER TYPES OF ZEROS?

     Mainly because in Target:  2005's area of the investment maturity spectrum,
STRIPS are far more  readily  available  than other types of zeros.  Although we
pick up  higher-yielding  receipt zeros when possible,  we often have to rely on
buying  STRIPS with the cash inflows to keep the fund fully  invested.  (See the
charts on page 12.)

WHAT IMPACT DID THESE CHANGES HAVE  ON TARGET: 2005'S WEIGHTED AVERAGE MATURITY
DATE?

     They caused it to move forward  from  November 8, 2005,  to  September  22,
2005,  by the end of March.  Many of the STRIPS that we purchased  mature in May
and August of 2005; they had slightly shorter maturities than many others in the
portfolio.

     So adding them  resulted in a shorter  average  maturity date and a drop of
around fifty cents in Target:  2005's  anticipated  value at maturity.  Overall,
however,  we generally  kept the fund's  average  maturity  close to that of its
benchmark.

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

[right margin]

"THE FUND RECEIVED ROUGHLY $30 MILLION IN NEW INVESTMENTS DURING THE SIX
MONTHS. . ."

PORTFOLIO AT A GLANCE
                            3/31/99           9/30/98
NUMBER OF SECURITIES          44                42
ANTICIPATED GROWTH
   RATE                      4.93%             3.98%
WEIGHTED AVERAGE
   MATURITY DATE            9/22/05          11/08/05
ANTICIPATED VALUE AT
   MATURITY (AVM)(1)        $101.07           $101.53
EXPENSE RATIO (FOR
   INVESTOR CLASS)          0.59%(2)           0.59%

Past performance is no guarantee of future results. Even if fund shares are held
to maturity,  there is no  guarantee  that the fund's share price will reach its
AVM.  There is also no  guarantee  that the AVM will  fluctuate as little in the
future  as it has  in  the  past.  For  more  information,  please  consult  the
prospectus.

(1)  See graph on page 10.
(2)  Annualized.

Investment terms are defined in the Glossary on pages 54-55.


                                                 www.americancentury.com      11


Target: 2005--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

GOING FORWARD, WHAT'S YOUR OUTLOOK FOR THE TREASURY MARKET?

     Many of the trends that caused  Treasury  prices to rise at the end of 1998
disappeared during the first quarter of 1999. On the international  front, Asian
and Latin American  economies  seem to have recovered  somewhat from last year's
crises.  With global markets looking less grim,  "flight-to-quality"  demand for
Treasurys has decreased.  Domestically,  economic  growth  remains  surprisingly
robust--during  the first quarter of 1999, the economy expanded at a 4.5% annual
pace.

     However,  some positive  influences  remain in place.  Inflation is still a
non-issue--prices  rose a mere 1.7% for the  twelve  months  ended  March 31 (as
measured by the government's  consumer price index). As such, we believe there's
little incentive for the Fed to raise interest rates in the near future.

     The first  federal  budget  surplus  in 30 years is also  having a positive
impact on Treasury  prices by reducing the amount of new Treasury bond issuance.
Last year the Treasury Department  discontinued quarterly auctions of three-year
Treasury notes and began auctioning  five-year Treasury notes quarterly,  rather
than monthly. A 30-year bond auction was also eliminated.

     We  wouldn't  be  surprised  if that  trend  continued.  There's  been some
discussion about the Treasury  Department  reducing  two-year note auctions from
monthly to only eight times a year. In addition,  the  elimination of one of the
Treasury's  30-year bond  auctions--which  would reduce the number to only two a
year--is also a possibility.

WITH THAT OUTLOOK IN MIND, WHAT ARE YOUR PLANS FOR THE PORTFOLIO?

     We will continue to focus our efforts to try to meet or beat Target: 2005's
anticipated  value at maturity.  In an attempt to accomplish  that goal, we will
continue to manage Target:  2005 to deliver a pure play on zero-coupon  bonds in
an effort to provide shareholders the total return and interest rate sensitivity
of a zero maturing on November 15, 2005.

     To help keep a lid on turnover and  transaction  costs, we will continue to
use cash  inflows  and  outflows  as  opportunities  to adjust  the  portfolio's
composition and weighted average maturity.

[left margin]

"WITH GLOBAL MARKETS LOOKING LESS GRIM, 'FLIGHT-TO-QUALITY' DEMAND FOR TREASURYS
HAS DECREASED."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

As of March 31, 1999
STRIPS             59%
REFCORPs            7%
BECCs              19%
TRs                13%
Other               2%

As of September 30, 1998
STRIPS             52%
REFCORPs           30%
BECCs              11%
TRs                 4%
Other               3%

Security types are defined on pages 54-55.


12      1-800-345-2021


Target: 2005 --Schedule of Investments
- --------------------------------------------------------------------------------

MARCH 31, 1999 (UNAUDITED)

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

ZERO-COUPON U.S. TREASURY SECURITIES(1)--92.5%
           $   5,000,000   BECC, 5.56%, 5/15/04                   $  3,780,334
                 258,000   ETR, 5.70%, 5/15/04                         194,677
               2,000,000   BECC, 4.47%, 11/15/04                     1,468,999
                 693,750   CUBES, 6.56%, 11/15/04                      511,234
                  87,000   ETR, 5.96%, 11/15/04                         63,762
               2,517,000   TIGR, 4.75%, 11/15/04                     1,856,844
                  27,000   TIGR, 5.90%, 11/15/04                        19,918
              17,000,000   TR, 4.75%, 11/15/04                      12,507,000
               7,200,000   BECC, 6.95%, 2/15/05                      5,201,740
               1,500,000   STRIPS--COUPON, 6.37%,
                              2/15/05                                1,097,415
               3,456,420   TR, 5.45%, 2/15/05                        2,501,424
              49,000,000   BECC, 5.83%, 5/15/05                     34,860,121
               4,615,672   CUBES, 8.59%, 5/15/05                     3,295,485
               1,000,000   ETR, 6.67%, 5/15/05                         709,739
              18,374,000   STRIPS--COUPON, 7.96%,
                              5/15/05                               13,244,269
             206,559,000   STRIPS--PRINCIPAL, 5.40%,
                              5/15/05                              148,492,231
                 428,750   TBR, 9.37%, 5/15/05                         304,301
               6,450,000   TR, 8.38%, 5/15/05                        4,577,816
             122,000,000   STRIPS--PRINCIPAL, 5.88%,
                              8/15/05                               86,564,140
               7,000,020   TR, 4.58%, 8/15/05                        4,917,751
              30,000,000   BECC, 6.15%, 11/15/05                    20,797,713
                 170,000   CATS, 6.21%, 11/15/05                       118,386
                 491,519   CUBES, 8.86%, 11/15/05                      342,069
                 200,000   LION, 5.73%, 11/15/05                       138,473
               1,500,000   STRIPS--COUPON, 6.33%,
                              11/15/05                               1,054,734
               2,247,000   TBR, 8.45%, 11/15/05                      1,553,741
             107,056,000   STRIPS--COUPON, 6.31%,
                              2/15/06                               73,721,569

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

           $   1,003,875   TR, 5.54%, 2/15/06                     $    682,565
              23,678,120   TR, 7.75%, 2/15/06                       16,099,472
              36,000,000   BECC, 5.09%, 5/15/06                     24,075,399
                 107,000   CATS, 6.05%, 5/15/06                         71,905
               6,032,000   CATS, 8.83%, 5/15/06                      4,028,385
               2,567,000   CATS, 8.84%, 5/15/06                      1,714,334
                 566,500   CUBES, 6.53%, 5/15/06                       380,430
               5,098,000   STRIPS--COUPON, 7.46%,
                              5/15/06                                3,461,697
                 410,000   TBR, 8.46%, 5/15/06                         273,434
              36,264,000   TR, 5.29%, 5/15/06                       24,184,891
                 146,346   TR, 8.89%, 5/15/06                           98,074
               1,299,780   TR, 8.86%, 8/15/06                          857,773
              22,230,000   BECC, 5.42%, 11/15/06                    14,425,751
                 100,000   U.S. Treasury Corpus, 5.38%,
                              11/15/06                                  64,462
                                                                 --------------
TOTAL ZERO-COUPON U.S.
TREASURY SECURITIES                                                514,314,457
                                                                 --------------
   (Cost $503,572,153)

ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES(1)--7.5%
               2,000,000   REFCORP STRIPS--COUPON,
                              5.84%, 4/15/05                         1,439,565
              38,270,000   REFCORP STRIPS--COUPON,
                              6.59%, 10/15/05                       26,857,448
              20,319,000   REFCORP STRIPS--COUPON,
                              6.18%, 7/15/06                        13,560,368
                                                                 --------------
TOTAL ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES                                                   41,857,381
                                                                 --------------
   (Cost $39,535,920)

TOTAL INVESTMENT SECURITIES--100.0%                               $556,171,838
                                                                 ==============
   (Cost $543,108,073)

NOTES TO SCHEDULE OF INVESTMENTS

BECC = Book Entry Callable Corpus

CATS = Certificates of Accrual of Treasury Securities

CUBES = Coupons Under Book Entry Safekeeping

ETR = Easy Growth Treasury Receipts

LION = Lehman Investment Opportunity Note

REFCORP = Resolution Funding Corporation

STRIPS = Separate Trading of Registered Interest and Principal of Securities

TBR = Treasury Bond Receipts

TIGR = Treasury Investment Growth Receipts

TR = Treasury Receipts

(1)  Rates indicated are the yield to maturity at purchase. These securities are
     purchased at a substantial discount from their value at maturity.

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

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

See Notes to Financial Statements


                                                 www.americancentury.com      13


Target: 2010--Performance
- --------------------------------------------------------------------------------

TOTAL RETURNS AS OF MARCH 31, 1999

<TABLE>
                           INVESTOR CLASS (INCEPTION 3/25/85)                      ADVISOR CLASS (INCEPTION 10/20/98)
                      TARGET           11/15/10       MERRILL LYNCH           TARGET           11/15/10        MERRILL LYNCH
                    MATURITIES         MATURITY         LONG-TERM           MATURITIES         MATURITY          LONG-TERM
                    TRUST: 2010      STRIPS ISSUE     TREASURY INDEX        TRUST: 2010      STRIPS ISSUE      TREASURY INDEX
<S>                 <C>               <C>              <C>                  <C>               <C>              <C>
6 MONTHS(1)           -7.34%            -7.20%           -5.16%                 --                --                --
1 YEAR                 7.39%             8.14%            7.07%                 --                --                --
==========================================================================================================================
AVERAGE ANNUAL RETURNS
==========================================================================================================================
3 YEARS               10.83%            11.42%            9.88%                 --                --                --
5 YEARS               11.11%            11.82%            9.71%                 --                --                --
10 YEARS              12.79%            13.22%           10.88%                 --                --                --
LIFE OF FUND          15.26%            16.71%(2)        11.95%(2)            -4.57%           -4.83%(3)         -3.64%(3)
</TABLE>

(1) Returns for periods less than one year are not annualized.

(2) Since  3/31/85,  the date nearest the class's  inception  for which data are
    available.

(3) Since  10/31/98,  the date nearest the class's  inception for which data are
    available.

See  pages  52-54  for  more  information  about  share  classes,  returns,  the
comparative index, and the fund's benchmark.

[mountain chart - data below]

GROWTH OF $10,000 OVER 1O YEARS
Value on 3/31/99
Target: 2010                $33,312
Merrill Lynch Long-Term
   Treasury Index           $28,093
11/15/10 STRIPS Issue       $34,620

                   Target:        Merrill Lynch Long-Term        11/15/10
                    2010               Treasury Index          STRIPS Issue
DATE                VALUE                  VALUE                  VALUE
3/31/89            $10,000                $10,000                $10,000
3/31/90            $11,460                $11,288                $11,567
3/31/91            $13,107                $12,761                $13,057
3/31/92            $14,723                $14,298                $14,770
3/31/93            $18,592                $17,083                $18,667
3/31/94            $19,670                $17,675                $19,807
3/31/95            $20,546                $18,457                $20,783
3/31/96            $24,472                $21,179                $25,031
3/31/97            $24,971                $21,776                $25,624
3/31/98            $31,022                $26,238                $32,014
3/31/99            $33,312                $28,093                $34,620

$10,000 investment made 3/31/89

The graph at left shows the growth of a $10,000  investment  in the fund over 10
years.  The Merrill Lynch Long-Term  Treasury Index and the fund's benchmark are
provided for  comparison.  The Target:  2010  portfolio's  total return includes
operating  expenses (such as transaction  costs and management fees) that reduce
returns, while the total returns of the index and the benchmark do not.

[line chart - data below]

SHARE PRICE VS. ANTICIPATED VALUE AT MATURITY
TARGET: 2010
Actual Share Price (Historical)    $57.43
Anticipated Value at Maturity
  (Estimated Share Price)         $105.50

          Actual Share Price      Anticipated Value at Maturity
             (Historical)            (Estimated Share Price)
1985            $11.43                       $97
                $17.65                       $97
                $14.96                       $95.27
                $17.31                       $97.13
                $22.16                       $96.66
1990            $22.22                       $97.52
                $26.9                        $98.97
                $29.534                      $100.179
                $37.292                      $100.874
                $32.981                      $101.78
1995            $46.864                      $101.788
                $42.474                      $102.529
                $49.16                       $103.4
                $61.98                       $104.85
                $57.43                       $105.50
2000




2005




2010

The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 54), which fluctuates from day to day based on the fund's
expected  maturity date. The bottom line represents the fund's  historical share
price,  which is managed to grow over time to reach the fund's  AVM.  While this
graph demonstrates the fund's expected long-term growth pattern,  please keep in
mind that the fund may experience  significant  share-price  volatility over the
short term. Even if fund shares are held to maturity, there is no guarantee that
the fund's share price will reach its AVM.  There is also no guarantee  that the
AVM will fluctuate as little in the future as it has in the past.

Both 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 is no guarantee of future  results.  Investment
return and principal value will fluctuate,  and redemption  value may be more or
less than original cost.


14      1-800-345-2021


Target: 2010--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

     An interview with Dave Schroeder  (pictured on page 6), a portfolio manager
on the Target Maturities Trust investment team.

HOW DID THE FUND PERFORM DURING THE SIX-MONTH PERIOD ENDED MARCH 31, 1999?

     Reflecting the overall rise in interest rates, Target: 2010 posted negative
returns.  For the six months  ended March 31,  1999,  Target:  2010 fell 7.34%,*
compared with the 7.20% decline of the fund's benchmark, a STRIPS issue maturing
on  November  15,  2010.  (See the  previous  page for  other  fund  performance
comparisons.)

     It's important to remember  that,  unlike its  benchmark,  Target:  2010 is
subject  to  transaction   costs  and  management   fees.  To  keep  the  fund's
after-expense returns as close as possible to those of the benchmark, we attempt
to enhance  performance  through  conservative  adjustments  to the  portfolio's
weighted  average  maturity  date and by shifting its mix of  zero-coupon  bonds
(zeros).

SPEAKING OF ADJUSTMENTS TO THE PORTFOLIO, WHAT CHANGES DID YOU MAKE?

     To  minimize  Target:  2010's  transaction  costs  and  turnover  rate,  we
continued  to use cash  inflows  and  outflows  as  opportunities  to adjust the
portfolio's  composition  and its weighted  average  maturity  date. To meet the
roughly $18 million in outflows that the fund experienced,  we sold STRIPS.  The
net result was a decrease in the portfolio's  STRIPS  position,  which fell from
51% of assets to 41%. (See the charts on page 16.)

     We also added some attractively priced REFCORPs,  especially toward the end
of 1998 when they began offering a significant  yield advantage over STRIPS.  As
such,  the fund's  exposure to REFCORPs  rose from around 43% of assets to about
52%.

WHY DID YOU SELL STRIPS INSTEAD OF OTHER TYPES OF ZEROS?

     By selling STRIPS,  we were able to meet the fund's liquidity needs without
sacrificing  returns.  That's  because  STRIPS  generally  have lower yields and
higher prices than REFCORPs or other non-STRIP holdings.

WHAT IMPACT DID THESE CHANGES HAVE  ON TARGET: 2010'S WEIGHTED AVERAGE MATURITY
DATE?

     They caused it to extend around 25 days to November 10, 2010, by the end of
March. Many of the STRIPS that we sold mature in May 2010; however, the REFCORPs
that we added  mature in April and October  2010.  We also bought a few REFCORPs
that mature in July 2011. So the net result was a longer  average  maturity date
for the portfolio and that caused Target:  2010's  anticipated value at maturity
to rise sixty-five cents to $105.50 by the end of March.

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

[right margin]

"BY SELLING  STRIPS,  WE WERE ABLE TO MEET THE FUND'S  LIQUIDITY  NEEDS  WITHOUT
SACRIFICING RETURNS. "

PORTFOLIO AT A GLANCE
                             3/31/99           9/30/98
NUMBER OF SECURITIES            18                18
ANTICIPATED GROWTH
   RATE                        5.31%             4.41%
WEIGHTED AVERAGE
   MATURITY DATE             11/10/10          10/16/10
ANTICIPATED VALUE AT
   MATURITY (AVM)(1)          $105.50           $104.85
EXPENSE RATIO (FOR
   INVESTOR CLASS)           0.59%(2)            0.59%

Past performance is no guarantee of future results. Even if fund shares are held
to maturity,  there is no  guarantee  that the fund's share price will reach its
AVM.  There is also no  guarantee  that the AVM will  fluctuate as little in the
future  as it has  in  the  past.  For  more  information,  please  consult  the
prospectus.

(1)  See graph on page 14.
(2)  Annualized.

Investment terms are defined in the Glossary on pages 54-55.


                                                 www.americancentury.com      15


Target: 2010--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

GOING FORWARD, WHAT'S YOUR OUTLOOK FOR THE TREASURY MARKET?

     Many of the trends that caused  Treasury  prices to rise at the end of 1998
disappeared during the first quarter of 1999. On the international  front, Asian
and Latin American  economies  seem to have recovered  somewhat from last year's
crises.  With global markets looking less grim,  "flight-to-quality"  demand for
Treasurys has decreased.  Domestically,  economic  growth  remains  surprisingly
robust--during  the first quarter of 1999, the economy expanded at a 4.5% annual
pace.

     However,  some positive  influences  remain in place.  Inflation is still a
non-issue--prices  rose a mere 1.7% for the  twelve  months  ended  March 31 (as
measured by the government's  consumer price index). As such, we believe there's
little incentive for the Fed to raise interest rates in the near future.

     The first  federal  budget  surplus  in 30 years is also  having a positive
impact on Treasury  prices by reducing the amount of new Treasury bond issuance.
Last year the Treasury Department  discontinued quarterly auctions of three-year
Treasury notes and began auctioning  five-year Treasury notes quarterly,  rather
than monthly. A 30-year bond auction was also eliminated.

     We  wouldn't  be  surprised  if that  trend  continued.  There's  been some
discussion about the Treasury  Department  reducing  two-year note auctions from
monthly to only eight times a year. In addition,  the  elimination of one of the
Treasury's  30-year bond  auctions--which  would reduce the number to only two a
year--is also a possibility.

WITH THAT OUTLOOK IN MIND, WHAT ARE YOUR PLANS FOR THE PORTFOLIO?

     Although there's no assurance that Target:  2010 will reach its anticipated
value at maturity,  we will continue to focus our efforts to try to meet or beat
that value.  In an effort to  accomplish  that goal,  we will continue to manage
Target: 2010 to deliver a pure play on zero-coupon bonds in an effort to provide
shareholders  the total return and interest rate  sensitivity of a zero maturing
on November 15, 2010.

     We will also continue to use cash inflows and outflows as  opportunities to
adjust the portfolio's  composition and weighted average  maturity.  That should
help keep  turnover  and  transaction  costs to a minimum.  In  addition,  we'll
continue to look for attractive  opportunities to add  higher-yielding  zeros to
the portfolio.

[left margin]

"WE'LL  CONTINUE TO LOOK FOR  ATTRACTIVE  OPPORTUNITIES  TO ADD  HIGHER-YIELDING
ZEROS TO THE PORTFOLIO."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

As of March 31, 1999
STRIPS             41%
REFCORPs           52%
ETRs                7%

As of September 30, 1998
STRIPS             51%
REFCORPs           43%
ETRs                6%

Security types are defined on pages 54-55.


16      1-800-345-2021


Target: 2010--Schedule of Investments
- --------------------------------------------------------------------------------

MARCH 31, 1999 (UNAUDITED)

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. TREASURY SECURITIES(1)--47.8%
             $28,520,000   ETR, 7.11%, 5/15/09                    $ 15,662,375
              11,500,000   STRIPS--PRINCIPAL, 7.18%,
                              11/15/09                               6,230,051
               2,000,000   STRIPS--COUPON, 5.90%,
                              2/15/10                                1,076,778
               2,587,000   STRIPS--COUPON, 6.80%,
                              5/15/10                                1,370,487
              18,577,000   STRIPS--COUPON, 6.77%,
                              8/15/10                                9,683,415
              47,839,000   STRIPS--COUPON, 6.88%,
                              11/15/10                              24,532,341
              38,360,000   STRIPS--COUPON, 7.96%,
                              2/15/11                               19,352,678
              24,000,000   STRIPS--COUPON, 5.85%,
                              5/15/11                               11,916,673
              11,715,000   STRIPS--COUPON, 7.23%,
                              8/15/11                                5,718,299
              43,000,000   STRIPS--COUPON, 6.11%,
                           11/15/11                                 20,654,113
                                                                 --------------
TOTAL ZERO-COUPON U.S.
TREASURY SECURITIES                                                116,197,210
                                                                 --------------
   (Cost $105,044,808)

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES(1)--52.2%
            $  2,000,000   REFCORP STRIPS--COUPON,
                              7.98%, 10/15/09                     $  1,084,246
               5,772,000   REFCORP STRIPS--COUPON,
                              7.85%, 1/15/10                         3,077,269
              45,728,000   REFCORP STRIPS--COUPON,
                              6.78%, 4/15/10                        23,977,371
              89,053,000   REFCORP STRIPS--COUPON,
                              5.84%, 10/15/10                       45,171,504
              72,361,000   REFCORP STRIPS--COUPON,
                              5.67%, 1/15/11                        36,103,316
              18,850,000   REFCORP STRIPS--COUPON,
                              7.84%, 4/15/11                         9,251,890
               7,000,000   REFCORP STRIPS--COUPON,
                              4.98%, 7/15/11                         3,372,897
              10,000,000   REFCORP STRIPS--COUPON,
                              5.46%, 10/15/11                        4,744,951
                                                                 --------------
TOTAL ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES                                                  126,783,444
                                                                 --------------
   (Cost $125,243,286)

TOTAL INVESTMENT SECURITIES--100.0%                               $242,980,654
                                                                 ==============
   (Cost $230,288,094)

NOTES TO SCHEDULE OF INVESTMENTS

ETR = Easy Growth Treasury Receipts

REFCORP = Resolution Funding Corporation

STRIPS = Separate Trading of Registered Interest and Principal of Securities

(1)  Rates indicated are the yield to maturity at purchase. These securities are
     purchased at a substantial discount from their value at maturity.

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

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

See Notes to Financial Statements


                                                 www.americancentury.com      17


Target: 2015--Performance
- --------------------------------------------------------------------------------

TOTAL RETURNS AS OF MARCH 31, 1999

                           INVESTOR CLASS (INCEPTION 9/1/86)
                       TARGET             11/15/15       MERRILL LYNCH
                     MATURITIES           MATURITY         LONG-TERM
                     TRUST: 2015        STRIPS ISSUE     TREASURY INDEX
6 MONTHS(1)            -8.78%              -8.76%           -5.16%
1 YEAR                  5.62%               5.82%            7.07%
=====================================================================
AVERAGE ANNUAL RETURNS
=====================================================================
3 YEARS                12.76%              13.18%            9.88%
5 YEARS                12.44%              12.99%            9.71%
10 YEARS               13.52%              13.98%           10.88%

(1) Returns for periods less than one year are not  annualized.  See pages 53-54
for more  information  about  returns,  the  comparative  index,  and the fund's
benchmark.

[mountain chart - data below]

GROWTH OF $10,000 OVER 1O YEARS
Value on 3/31/99
Target: 2015                $35,539
Merrill Lynch Long-Term
   Treasury Index           $28,093
11/15/15 STRIPS Issue       $36,997

                   Target:        Merrill Lynch Long-Term        11/15/15
                    2015               Treasury Index          STRIPS Issue
DATE                VALUE                  VALUE                  VALUE
3/31/89            $10,000                $10,000                $10,000
3/31/90            $11,457                $11,288                $11,535
3/31/91            $12,899                $12,761                $13,061
3/31/92            $14,602                $14,298                $14,688
3/31/93            $18,196                $17,083                $18,432
3/31/94            $19,773                $17,675                $20,093
3/31/95            $20,438                $18,457                $20,841
3/31/96            $24,789                $21,179                $25,518
3/31/97            $25,210                $21,776                $26,010
3/31/98            $33,648                $26,238                $34,963
3/31/99            $35,539                $28,093                $36,997

$10,000 investment made 3/31/89

The graph at left shows the growth of a $10,000  investment  in the fund over 10
years.  The Merrill Lynch Long-Term  Treasury Index and the fund's benchmark are
provided for  comparison.  The Target:  2015  portfolio's  total return includes
operating  expenses (such as transaction  costs and management fees) that reduce
returns, while the total returns of the index and the benchmark do not.

[line chart - data below]

SHARE PRICE VS. ANTICIPATED VALUE AT MATURITY
TARGET: 2015
Actual Share Price (Historical)    $45.49
Anticipated Value at Maturity
  (Estimated Share Price)         $112.52

          Actual Share Price      Anticipated Value at Maturity
             (Historical)            (Estimated Share Price)
1986            $14.24                       $101
                $11.37                       $102.86
                $12.63                       $102.75
                $16.86                       $101.77
1990            $16.29                       $102.24
                $19.95                       $106.05
                $21.502                      $107.792
                $28.064                      $106.952
                $24.11                       $108.832
1995            $36.819                      $109.462
                $31.962                      $110.109
                $38.34                       $110.52
                $49.87                       $112.63
                $45.49                       $112.52
2000




2005




2010




2015

The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 54), which fluctuates from day to day based on the fund's
expected  maturity date. The bottom line represents the fund's  historical share
price,  which is managed to grow over time to reach the fund's  AVM.  While this
graph demonstrates the fund's expected long-term growth pattern,  please keep in
mind that the fund may experience  significant  share-price  volatility over the
short term. Even if fund shares are held to maturity, there is no guarantee that
the fund's share price will reach its AVM.  There is also no guarantee  that the
AVM will fluctuate as little in the future as it has in the past.

Past  performance  is no  guarantee  of future  results.  Investment  return and
principal  value will fluctuate,  and redemption  value may be more or less than
original cost.


18      1-800-345-2021


Target: 2015--Q&A
- --------------------------------------------------------------------------------

     An interview with Dave Schroeder  (pictured on page 6), a portfolio manager
on the Target Maturities Trust investment team.

HOW DID THE FUND PERFORM DURING THE SIX-MONTH PERIOD ENDED MARCH 31, 1999?

     Reflecting the overall rise in interest rates, Target: 2015 posted negative
returns.  For the six months  ended  March 31,  1999,  Target:  2015 fell 8.78%,
compared with the 8.76% loss of the fund's benchmark, a STRIPS issue maturing on
November  15,  2015.   (See  the  previous  page  for  other  fund   performance
comparisons.)

     Please keep in mind that Target: 2015, unlike its benchmark,  is subject to
transaction costs and management fees. To keep the fund's after-expense  returns
as  close  as  possible  to  those  of the  benchmark,  we  attempt  to  enhance
performance through conservative adjustments to the portfolio's weighted average
maturity date and by shifting its mix of zero-coupon bonds (zeros).

SPEAKING OF PORTFOLIO ADJUSTMENTS, WHAT CHANGES DID YOU MAKE?

     To  minimize  Target:  2015's  transaction  costs  and  turnover  rate,  we
continued  to use cash  inflows  and  outflows  as  opportunities  to adjust the
portfolio's  composition  and its  weighted  average  maturity  date.  The  fund
received nearly $60 million in new  investments  during the six months and while
we were able to find some attractive REFCORPs for the portfolio, most of the new
capital was put to work in STRIPS.

     As a result,  the portfolio's  STRIPS position increased from 50% of assets
to 63%,  while the amount of REFCORPs  fell from 50% to 37%.  (See the charts on
page 20.)

WHY DID YOU ADD MORE STRIPS THAN OTHER TYPES OF ZEROS?

     Mainly because STRIPS are far more readily  available than REFCORPs,  which
are the only other types of zeros  available  in the fund's area of the maturity
spectrum.  Although we pick up higher-yielding  REFCORPs when possible, we often
have to rely on buying STRIPS to keep the fund fully invested.

WHAT IMPACT DID THESE CHANGES HAVE  ON TARGET: 2015'S WEIGHTED AVERAGE MATURITY
DATE?

     The  changes  had very  little  impact.  Nearly all of the  STRIPS  that we
purchased mature in November 2015. Because the average maturities of those zeros
were very comparable to the other ones in the portfolio,  Target: 2015's average
maturity  date  extended only six days to November 19, 2015, by the end of March
and resulted in little change to the fund's anticipated value at maturity.

GOING FORWARD, WHAT'S YOUR OUTLOOK FOR THE TREASURY MARKET?

     Many of the trends that caused  Treasury  prices to rise at the end of 1998
disappeared during the first quarter of 1999. On the international  front, Asian
and Latin American  economies  seem to have recovered  somewhat from last year's
crises. With global markets

[right margin]

"THE FUND RECEIVED NEARLY $60 MILLION IN NEW INVESTMENTS DURING THE SIX
MONTHS. . ."

PORTFOLIO AT A GLANCE
                              3/31/99           9/30/98
NUMBER OF SECURITIES             13                12
ANTICIPATED GROWTH
   RATE                         5.52%             4.81%
WEIGHTED AVERAGE
   MATURITY DATE              11/19/15          11/13/15
ANTICIPATED VALUE AT
   MATURITY (AVM)(1)           $112.52           $112.63
EXPENSE RATIO (FOR
   INVESTOR CLASS)            0.59%(2)            0.59%

Past performance is no guarantee of future results. Even if fund shares are held
to maturity,  there is no  guarantee  that the fund's share price will reach its
AVM.  There is also no  guarantee  that the AVM will  fluctuate as little in the
future  as it has  in  the  past.  For  more  information,  please  consult  the
prospectus.

(1)  See graph on page 18.
(2)  Annualized.

Investment terms are defined in the Glossary on pages 54-55.


                                                 www.americancentury.com      19


Target: 2015--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

looking  less grim,  "flight-to-quality"  demand for  Treasurys  has  decreased.
Domestically,  economic  growth remains  surprisingly  robust--during  the first
quarter of 1999, the economy expanded at a 4.5% annual pace.

     However,  some positive  influences  remain in place.  Inflation is still a
non-issue--prices  rose a mere 1.7% for the  twelve  months  ended  March 31 (as
measured by the government's  consumer price index). As such, we believe there's
little incentive for the Fed to raise interest rates in the near future.

     The first  federal  budget  surplus  in 30 years is also  having a positive
impact on Treasury  prices by reducing the amount of new Treasury bond issuance.
Last year the Treasury Department  discontinued quarterly auctions of three-year
Treasury notes and began auctioning  five-year Treasury notes quarterly,  rather
than monthly. A 30-year bond auction was also eliminated.

     We  wouldn't  be  surprised  if that  trend  continued.  There's  been some
discussion about the Treasury  Department  reducing  two-year note auctions from
monthly to only eight times a year. In addition,  the  elimination of one of the
Treasury's  30-year bond  auctions--which  would reduce the number to only two a
year--is also a possibility.

WITH THAT OUTLOOK IN MIND, WHAT ARE YOUR PLANS FOR THE PORTFOLIO?

     We will continue to focus our efforts to try to meet or beat Target: 2015's
anticipated  value at maturity.  In an effort to  accomplish  that goal, we will
continue to manage Target:  2015 to deliver a pure play on zero-coupon  bonds in
an effort to provide shareholders the total return and interest rate sensitivity
of a zero  maturing on November  15,  2015.  To help keep a lid on turnover  and
transaction  costs,  we will  continue  to use  cash  inflows  and  outflows  as
opportunities  to  adjust  the  portfolio's  composition  and  weighted  average
maturity.

[left margin]

"WE WILL CONTINUE TO FOCUS OUR EFFORTS TO TRY TO MEET OR BEAT TARGET: 2015'S
ANTICIPATED VALUE AT MATURITY. "

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

As of March 31, 1999
STRIPS             63%
REFCORPs           37%

As of September 30, 1998
STRIPS             50%
REFCORPs           50%

Security types are defined on pages 54-55.


20      1-800-345-2021


Target: 2015 --Schedule of Investments
- --------------------------------------------------------------------------------

MARCH 31, 1999 (UNAUDITED)

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. TREASURY SECURITIES(1) --63.0%
$              4,350,000   STRIPS--COUPON, 9.22%,
                              2/15/15                             $  1,684,765
              39,408,000   STRIPS--COUPON, 9.14%,
                              5/15/15                               15,028,480
              35,050,000   STRIPS--COUPON, 9.17%,
                              8/15/15                               13,144,028
             247,808,000   STRIPS--COUPON, 6.31%,
                              11/15/15                              91,423,970
              36,300,000   STRIPS--COUPON, 8.38%,
                              2/15/16                               13,189,549
              17,700,000   STRIPS--COUPON, 8.39%,
                              5/15/16                                6,337,108
              11,000,000   STRIPS--COUPON, 5.60%,
                              8/15/16                                3,875,457
                                                                 --------------
TOTAL ZERO-COUPON U.S.
TREASURY SECURITIES                                                144,683,357
                                                                 --------------
   (Cost $125,597,546)

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES(1) --37.0%
$              2,001,000   REFCORP STRIPS--COUPON,
                              6.13%, 1/15/15                      $    762,438
              54,640,000   REFCORP STRIPS--COUPON,
                              7.51%, 4/15/15                        20,489,810
              43,121,000   REFCORP STRIPS--COUPON,
                              7.71%, 7/15/15                        15,898,191
              50,365,000   REFCORP STRIPS--COUPON,
                              8.29%, 10/15/15                       18,259,259
              28,591,000   REFCORP STRIPS--COUPON,
                              8.21%, 7/15/16                         9,889,955
              57,500,000   REFCORP STRIPS--COUPON,
                              6.82%, 10/15/16                       19,572,210
                                                                 --------------
TOTAL ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES                                                   84,871,863
                                                                 --------------
   (Cost $69,106,537)

TOTAL INVESTMENT SECURITIES--100.0%                               $229,555,220
                                                                 ==============
   (Cost $194,704,083)

NOTES TO SCHEDULE OF INVESTMENTS

REFCORP = Resolution Funding Corporation

STRIPS = Separate Trading of Registered Interest and Principal of Securities

(1)  Rates indicated are the yield to maturity at purchase. These securities are
     purchased at a substantial discount from their value at maturity.

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

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

See Notes to Financial Statements


                                                 www.americancentury.com      21


Target: 2020--Performance
- --------------------------------------------------------------------------------

TOTAL RETURNS AS OF MARCH 31, 1999

<TABLE>
                           INVESTOR CLASS (INCEPTION 12/29/89)                    ADVISOR CLASS (INCEPTION 10/19/98)
                      TARGET                        MERRILL LYNCH           TARGET           11/15/20        MERRILL LYNCH
                    MATURITIES        FUND            LONG-TERM           MATURITIES         MATURITY          LONG-TERM
                    TRUST: 2020    BENCHMARK(2)     TREASURY INDEX        TRUST: 2020      STRIPS ISSUE      TREASURY INDEX
<S>                 <C>           <C>                <C>                   <C>                <C>                <C>
6 MONTHS(1)          -10.69%        -10.68%            -5.16%                 --                --                 --
1 YEAR                 5.36%          5.85%             7.07%                 --                --                 --
========================================================================================================================
AVERAGE ANNUAL RETURNS
========================================================================================================================
3 YEARS               14.66%         15.24%             9.88%                 --                --                 --
5 YEARS               13.64%         14.24%             9.71%                 --                --                 --
LIFE OF FUND          11.55%         11.16%             9.86%               -7.10%           -6.70%(3)          -3.64%(3)
</TABLE>

(1)  Returns for periods less than one year are not annualized.

(2)  From December 1989 through April 1990, the fund's  benchmark was an 8/15/19
     STRIPS issue; from May 1990 through October 1991, it was an 11/15/19 STRIPS
     issue;  and from  November  1991 to the  present,  it has been an  11/15/20
     STRIPS issue.

(3)  Since 10/31/98,  the date nearest the class's  inception for which data are
     available.

See  pages  52-54  for  more  information  about  share  classes,  returns,  the
comparative index, and the fund's benchmark.

[mountain chart - data below]

GROWTH OF $10,000 OVER LIFE OF FUND
Value on 3/31/99
Target: 2020                $27,500
Merrill Lynch Long-Term
   Treasury Index           $23,872
Fund Benchmark              $26,599

                   Target:        Merrill Lynch Long-Term         Fund
                    2020               Treasury Index           Benchmark
DATE                VALUE                  VALUE                  VALUE
12/29/89           $10,000                $10,000                $10,000
3/31/90             $8,658                 $9,592                 $8,407
6/30/90             $9,258                $10,005                 $8,818
9/30/90             $8,025                 $9,794                 $7,976
12/31/90            $9,550                $10,645                 $9,080
3/31/91             $9,717                $10,843                 $9,257
6/30/91             $9,208                $10,900                 $8,774
9/30/91            $10,450                $11,802                $10,012
12/31/91           $11,208                $12,608                $10,623
3/31/92            $10,592                $12,151                $9,970
6/30/92            $10,842                $12,654                $10,226
9/30/92            $11,359                $13,486                $10,690
12/31/92           $12,143                $13,612                $11,474
3/31/93            $13,360                $14,518                $12,631
6/30/93            $14,693                $15,295                $13,854
9/30/93            $17,269                $16,225                $16,421
12/31/93           $16,469                $15,956                $15,625
3/31/94            $14,511                $15,021                $13,672
6/30/94            $13,378                $14,587                $12,613
9/30/94            $12,735                $14,501                $11,974
12/31/94           $13,561                $14,767                $12,775
3/31/95            $14,769                $15,683                $13,925
6/30/95            $17,935                $17,402                $17,009
9/30/95            $18,726                $17,816                $17,816
12/31/95           $21,876                $19,298                $20,861
3/31/96            $18,243                $17,998                $17,378
6/30/96            $18,135                $17,969                $17,361
9/30/96            $18,334                $18,236                $17,558
12/31/96           $20,034                $19,106                $19,111
3/31/97            $18,425                $18,504                $17,620
6/30/97            $20,268                $19,519                $19,504
9/30/97            $22,643                $20,635                $21,752
12/31/97           $25,768                $21,960                $24,758
3/31/98            $26,100                $22,296                $25,127
6/30/98            $28,342                $23,319                $27,225
9/30/98            $30,791                $25,171                $29,781
12/31/98           $30,015                $24,934                $29,114
3/31/99            $27,500                $23,872                $26,599

$10,000 investment made 12/31/89

The graph at left shows the growth of a $10,000  investment over the life of the
fund. The Merrill Lynch  Long-Term  Treasury Index and the fund's  benchmark are
provided for  comparison.  The Target:  2020  portfolio's  total return includes
operating  expenses (such as transaction  costs and management fees) that reduce
returns, while the total returns of the index and the benchmark do not.

[line chart - data below]

SHARE PRICE VS. ANTICIPATED VALUE AT MATURITY
TARGET: 2020
Actual Share Price (Historical)    $33.00
Anticipated Value at Maturity
  (Estimated Share Price)         $106.76

          Actual Share Price      Anticipated Value at Maturity
             (Historical)            (Estimated Share Price)
1990            $11.46                       $92.6
                $13.45                       $97.77
                $14.575                      $102.184
                $19.765                      $101.274
                $16.273                      $102.175
1995            $26.245                      $102.54
                $22                          $103.598
                $27.17                       $104.84
                $36.95                       $106.96
                $33.00                       $106.76
2000




2005




2010




2015




2020


The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 54), which fluctuates from day to day based on the fund's
expected  maturity date. The bottom line represents the fund's  historical share
price,  which is managed to grow over time to reach the fund's  AVM.  While this
graph demonstrates the fund's expected long-term growth pattern,  please keep in
mind that the fund may experience  significant  share-price  volatility over the
short term. Even if fund shares are held to maturity, there is no guarantee that
the fund's share price will reach its AVM.  There is also no guarantee  that the
AVM will fluctuate as little in the future as it has in the past.

Both 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 is no guarantee of future  results.  Investment
return and principal value will fluctuate,  and redemption  value may be more or
less than original cost.


22      1-800-345-2021


Target: 2020--Q&A
- --------------------------------------------------------------------------------

     An interview with Dave Schroeder  (pictured on page 6), a portfolio manager
on the Target Maturities Trust investment team.

HOW DID THE FUND PERFORM DURING THE SIX-MONTH PERIOD ENDED MARCH 31, 1999?

     Reflecting the overall rise in interest rates, Target: 2020 posted negative
returns. For the six months ended March 31, 1999, Target:  2020's Investor Class
shares fell 10.69%,*  compared with the 10.68% loss of the fund's  benchmark,  a
STRIPS issue  maturing on November 15,  2020.  (See the previous  page for other
fund performance comparisons.)

     Please keep in mind that Target: 2020, unlike its benchmark,  is subject to
transaction costs and management fees. To keep the fund's after-expense  returns
as  close  as  possible  to  those  of the  benchmark,  we  attempt  to  enhance
performance through conservative adjustments to the portfolio's weighted average
maturity and by shifting its mix of zero-coupon bonds (zeros).

SPEAKING OF ADJUSTMENTS TO THE PORTFOLIO, WHAT CHANGES DID YOU MAKE?

     To  minimize  Target:  2020's  transaction  costs  and  turnover  rate,  we
continued  to use cash  inflows  and  outflows  as  opportunities  to adjust the
portfolio's  composition  and its weighted  average  maturity  date. To meet the
roughly $100 million in outflows that the fund  experienced,  we sold STRIPS and
REFCORPs. Because we sold both types of zeros, the fund's asset mix changed very
little.

     The REFCORPs that we sold were primarily principal zeros--that is, they are
the actual principal payment of a REFCORP bond,  traded as a separate  security.
The price of the  REFCORP  principal  zeros  that we sold had  fallen  less than
coupon  REFCORPs--zeros  that are  created  from the  underlying  bond's  coupon
payments--so the fund's returns were enhanced.

WHAT IMPACT DID THESE CHANGES HAVE ON TARGET: 2020'S WEIGHTED AVERAGE MATURITY
DATE?

     They caused it to move forward  roughly 14 days to August 22, 2020. Many of
the REFCORPs that we sold mature in October 2020, which is toward the longer end
of the fund's  investment  maturity  spectrum.  So selling  them  resulted  in a
shorter average maturity date for the portfolio and about a twenty-cent decrease
in Target: 2020's anticipated value at maturity.

     Overall,  however,  we generally  kept the fund's average  maturity  fairly
close to that of its benchmark.  By using such a conservative  approach,  we are
better able to ensure that Target:  2020's long-term  performance closely tracks
that of the November 15, 2020 STRIPS.

GOING FORWARD, WHAT'S YOUR OUTLOOK FOR THE TREASURY MARKET?

     Many of the trends that caused  Treasury  prices to rise at the end of 1998
disappeared during the first quarter of 1999. On the international  front, Asian
and Latin American  economies  seem to have recovered  somewhat from last year's
crises. With global markets

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

[right margin]

"THE PRICE OF THE  REFCORP  PRINCIPAL  ZEROS  THAT WE SOLD HAD FALLEN  LESS THAN
COUPON  REFCORPS--ZEROS  THAT ARE  CREATED  FROM THE  UNDERLYING  BOND'S  COUPON
PAYMENTS--SO THE FUND'S RETURNS WERE ENHANCED."

PORTFOLIO AT A GLANCE
                            3/31/99           9/30/98
NUMBER OF SECURITIES          14                15
ANTICIPATED GROWTH
   RATE                      5.56%             4.90%
WEIGHTED AVERAGE
   MATURITY DATE            8/22/20           9/05/20
ANTICIPATED VALUE AT
   MATURITY (AVM)(1)        $106.76           $106.96
EXPENSE RATIO (FOR
   INVESTOR CLASS)          0.59%(2)           0.59%

Past performance is no guarantee of future results. Even if fund shares are held
to maturity,  there is no  guarantee  that the fund's share price will reach its
AVM.  There is also no  guarantee  that the AVM will  fluctuate as little in the
future  as it has  in  the  past.  For  more  information,  please  consult  the
prospectus.

(1)  See graph on page 22.
(2)  Annualized.

Investment terms are defined in the Glossary on pages 54-55.


                                                 www.americancentury.com      23


Target: 2020--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

looking  less grim,  "flight-to-quality"  demand for  Treasurys  has  decreased.
Domestically,  economic  growth remains  surprisingly  robust--during  the first
quarter of 1999, the economy expanded at a 4.5% annual pace.

     However,  some positive  influences  remain in place.  Inflation is still a
non-issue--prices  rose a mere 1.7% for the  twelve  months  ended  March 31 (as
measured by the government's  consumer price index). As such, we believe there's
little incentive for the Fed to raise interest rates in the near future.

     The first  federal  budget  surplus  in 30 years is also  having a positive
impact on Treasury  prices by reducing the amount of new Treasury bond issuance.
Last year the Treasury Department  discontinued quarterly auctions of three-year
Treasury notes and began auctioning  five-year Treasury notes quarterly,  rather
than monthly. A 30-year bond auction was also eliminated.

     We  wouldn't  be  surprised  if that  trend  continued.  There's  been some
discussion about the Treasury  Department  reducing  two-year note auctions from
monthly to only eight times a year. In addition,  the  elimination of one of the
Treasury's  30-year bond  auctions--which  would reduce the number to only two a
year--is also a possibility.

WITH THAT OUTLOOK IN MIND, WHAT ARE YOUR PLANS FOR THE PORTFOLIO?

     Although there's no assurance that Target:  2020 will reach its anticipated
value at maturity,  we will continue to focus our efforts to try to meet or beat
that value.  In an effort to  accomplish  that goal,  we will continue to manage
Target: 2020 to deliver a pure play on zero-coupon bonds in an effort to provide
shareholders  the total return and interest rate  sensitivity of a zero maturing
on November 15, 2020.

     In addition,  we'll  continue to look for attractive  opportunities  to add
REFCORPs  to the  portfolio.  We will  also use cash  inflows  and  outflows  as
opportunities  to  adjust  the  portfolio's  composition  and  weighted  average
maturity. That should help keep turnover and transaction costs to a minimum.

[left margin]

"WE'LL CONTINUE TO LOOK FOR ATTRACTIVE OPPORTUNITIES TO ADD REFCORPS TO THE
PORTFOLIO."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

As of March 31, 1999
REFCORPs          52%
STRIPS            48%

As of September 30, 1998
REFCORPs          54%
STRIPS            46%

Security types are defined on pages 54-55.


24      1-800-345-2021


Target: 2020--Schedule of Investments
- --------------------------------------------------------------------------------

MARCH 31, 1999 (UNAUDITED)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. TREASURY SECURITIES(1)--47.7%
            $177,000,000   STRIPS--COUPON, 8.10%,
                              2/15/20                             $ 50,336,356
              76,688,000   STRIPS--COUPON, 7.99%,
                              5/15/20                               21,488,421
             142,135,000   STRIPS--COUPON, 7.67%,
                              8/15/20(2)                            39,222,019
             147,407,000   STRIPS--COUPON, 7.85%,
                              11/15/20(2)                           40,078,883
              52,750,000   STRIPS--COUPON, 7.02%,
                              2/15/21                               14,154,471
              13,500,000   STRIPS--COUPON, 7.49%,
                              5/15/21                                3,565,478
              14,500,000   STRIPS--COUPON, 7.40%,
                              11/15/21                               3,744,726
                                                                 --------------
TOTAL ZERO-COUPON U.S.
TREASURY SECURITIES                                                172,590,354
                                                                 --------------
   (Cost $122,669,076)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES(1)--52.3%
            $ 79,274,000   REFCORP STRIPS--COUPON,
                              7.87%, 1/15/20                      $ 21,985,812
              29,156,000   REFCORP STRIPS--COUPON,
                              5.92%, 4/15/20                         7,963,145
              58,656,000   REFCORP STRIPS--COUPON,
                              7.58%, 7/15/20                        15,773,521
             210,231,000   REFCORP STRIPS--PRINCIPAL,
                              8.43%, 7/15/20                        56,826,959
              23,678,000   REFCORP STRIPS--COUPON,
                              6.60%, 10/15/20                        6,270,557
              25,482,000   REFCORP STRIPS--COUPON,
                              7.98%, 1/15/21                         6,658,429
             279,945,000   REFCORP STRIPS--PRINCIPAL,
                              7.34%, 1/15/21                        73,536,878
                                                                 --------------
TOTAL ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES                                                  189,015,301
                                                                 --------------
   (Cost $142,425,274)

TOTAL INVESTMENT SECURITIES--100.0%                               $361,605,655
                                                                 ==============
   (Cost $265,094,350)

NOTES TO SCHEDULE OF INVESTMENTS

REFCORP = Resolution Funding Corporation

STRIPS = Separate Trading of Registered Interest and Principal of Securities

(1)  Rates indicated are the yield to maturity at purchase. These securities are
     purchased at a substantial discount from their value at maturity.
(2)  Security position,  or a portion thereof,  has been loaned.  (See Note 5 in
     the Notes to Financial Statements).

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

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

See Notes to Financial Statements


                                                 www.americancentury.com      25


Target: 2025--Performance
- --------------------------------------------------------------------------------

TOTAL RETURNS AS OF MARCH 31, 1999

<TABLE>
                           INVESTOR CLASS (INCEPTION 2/15/96)                        ADVISOR CLASS (INCEPTION 6/1/98)
                      TARGET                         MERRILL LYNCH           TARGET           11/15/25        MERRILL LYNCH
                    MATURITIES         FUND            LONG-TERM           MATURITIES         MATURITY          LONG-TERM
                    TRUST: 2025     BENCHMARK(2)     TREASURY INDEX        TRUST: 2025      STRIPS ISSUE      TREASURY INDEX
<S>                <C>             <C>                <C>                 <C>               <C>                <C>
6 MONTHS(1)          -11.27%         -11.11%            -5.16%              -11.38%           -11.11%            -5.16%
1 YEAR                 8.33%           8.60%             7.07%                 --                --                 --
=========================================================================================================================
AVERAGE ANNUAL RETURNS
=========================================================================================================================
3 YEARS               15.77%          14.62%             9.88%                 --                --                 --
LIFE OF FUND          11.78%           9.94%             8.92%(3)             2.82%             4.70%              4.74%
</TABLE>

(1)  Returns for periods less than one year are not annualized.

(2)  The fund's  benchmark was an 8/15/25  STRIPS issue from  inception  through
     January 1998, when the benchmark was changed to an 11/15/25 STRIPS issue.

(3)  Since  2/29/96,  the date nearest the class's  inception for which data are
     available.

See  pages  52-54  for  more  information  about  share  classes,  returns,  the
comparative index, and the fund's benchmark.

[mountain chart - data below]

GROWTH OF $10,000 OVER LIFE OF FUND
Value on 3/31/99
Target: 2025                $14,836
Merrill Lynch Long-Term
   Treasury Index           $13,012
Fund Benchmark              $14,506

                   Target:        Merrill Lynch Long-Term         Fund
                    2025               Treasury Index           Benchmark
2/29/96            $10,000                $10,000                $10,000
3/31/96             $9,562                 $9,810                 $9,632
4/30/96             $9,177                 $9,646                 $8,975
5/31/96             $9,166                 $9,599                 $9,028
6/30/96             $9,414                 $9,794                 $9,361
7/31/96             $9,398                 $9,794                 $9,288
8/31/96             $8,938                 $9,675                 $8,808
9/30/96             $9,456                 $9,940                 $9,343
10/31/96           $10,269                $10,328                $10,159
11/30/96           $11,046                $10,667                $10,856
12/31/96           $10,364                $10,415                $10,158
1/31/97             $9,947                $10,347                 $9,721
2/28/97             $9,879                $10,332                 $9,612
3/31/97             $9,309                $10,086                 $9,077
4/30/97             $9,842                $10,332                 $9,512
5/31/97            $10,016                $10,442                 $9,672
6/30/97            $10,444                $10,639                $10,133
7/31/97            $12,013                $11,254                $11,673
8/31/97            $11,067                $10,940                $10,733
9/30/97            $11,759                $11,248                $11,358
10/31/97           $12,593                $11,618                $12,216
11/30/97           $13,015                $11,770                $12,714
12/31/97           $13,484                $11,969                $13,127
1/31/98            $13,881                $12,206                $13,554
2/28/98            $13,632                $12,121                $13,254
3/31/98            $13,695                $12,151                $13,356
4/30/98            $13,632                $12,186                $13,314
5/31/98            $14,281                $12,423                $13,854
6/30/98            $15,084                $12,709                $14,642
7/31/98            $14,777                $12,657                $14,404
8/31/98            $16,097                $13,233                $15,795
9/30/98            $16,720                $13,719                $16,320
10/31/98           $16,255                $13,502                $15,980
11/30/98           $16,619                $13,620                $16,306
12/31/98           $16,423                $13,591                $16,103
1/31/99            $16,750                $13,712                $16,497
2/28/99            $15,040                $13,020                $14,737
3/31/99            $14,836                $13,012                $14,506

$10,000 investment made 2/29/96

The graph at left shows the growth of a $10,000  investment over the life of the
fund.* The Merrill Lynch Long-Term  Treasury Index and the fund's  benchmark are
provided for  comparison.  The Target:  2025  portfolio's  total return includes
operating  expenses (such as transaction  costs and management fees) that reduce
returns, while the total returns of the index and the benchmark do not.

* 2/29/96 is the date  nearest  the fund's  inception  for which  index data are
  available.

[line chart - data below]

SHARE PRICE VS. ANTICIPATED VALUE AT MATURITY
TARGET: 2025
Actual Share Price (Historical)    $28.10
Anticipated Value at Maturity
  (Estimated Share Price)         $111.41

          Actual Share Price      Anticipated Value at Maturity
             (Historical)            (Estimated Share Price)
1996            $17.91                       $109.24
                $22.27                       $110.88
                $31.67                       $112.23
                $28.10                       $111.41
2000




2005




2010




2015




2020




2025

The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 54), which fluctuates from day to day based on the fund's
expected  maturity date. The bottom line represents the fund's  historical share
price,  which is managed to grow over time to reach the fund's  AVM.  While this
graph demonstrates the fund's expected long-term growth pattern,  please keep in
mind that the fund may experience  significant  share-price  volatility over the
short term. Even if fund shares are held to maturity, there is no guarantee that
the fund's share price will reach its AVM.  There is also no guarantee  that the
AVM will fluctuate as little in the future as it has in the past.

Both 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 is no guarantee of future  results.  Investment
return and principal value will fluctuate,  and redemption  value may be more or
less than original cost.


26      1-800-345-2021


Target: 2025--Q&A
- --------------------------------------------------------------------------------

     An interview with Dave Schroeder  (pictured on page 6), a portfolio manager
on the Target Maturities Trust investment team.

HOW DID THE FUND PERFORM DURING THE SIX-MONTH PERIOD ENDED MARCH 31, 1999?

     Reflecting the overall rise in interest rates, Target: 2025 posted negative
returns.  For the six months ended March 31, 1999,  Target:  2025 fell  11.27%,*
compared with the 11.11% loss of the fund's  benchmark,  a STRIPS issue maturing
on  November  15,  2025.  (See the  previous  page for  other  fund  performance
comparisons.)

     Please keep in mind that Target: 2025, unlike its benchmark,  is subject to
transaction costs and management fees. To keep the fund's after-expense  returns
as  close  as  possible  to  those  of the  benchmark,  we  attempt  to  enhance
performance  through  conservative  changes to the portfolio's  weighted average
maturity date and by adjusting its mix of zero-coupon bonds (zeros).

SPEAKING OF PORTFOLIO ADJUSTMENTS, WHAT CHANGES DID YOU MAKE?

     To  minimize  Target:  2025's  transaction  costs  and  turnover  rate,  we
continued  to use cash  inflows  and  outflows  as  opportunities  to adjust the
portfolio's  composition and the weighted average maturity date of the fund. The
fund received roughly $100 million in new investments during the six months, and
nearly all of the capital was put to work in STRIPS.

     As a result,  the portfolio's  STRIPS position increased from 67% of assets
to 76%,  while the amount of REFCORPs fell from 33% to only 24%. (See the charts
on page 28.)

WHY DID YOU ADD STRIPS TO THE PORTFOLIO RATHER THAN REFCORPS?

     Mainly because STRIPS are far more readily  available than REFCORPs,  which
are the only other types of zeros  available  in the fund's area of the maturity
spectrum. So while we add higher-yielding  REFCORPs when possible, we often have
to rely on buying STRIPS with the cash inflows to keep the fund fully invested.

WHAT IMPACT DID THE ADDITION OF THOSE STRIPS HAVE ON TARGET: 2025'S WEIGHTED
AVERAGE MATURITY DATE?

     Target: 2025's average maturity date fell from May 30, 2025, six months ago
to May 1, 2025, by the end of March. The STRIPS that we purchased mature in late
2024 and early 2025,  which makes them  slightly  shorter than some of the other
ones in the  portfolio.  So adding them resulted in a shorter  average  maturity
date  for the  portfolio  and  around  an  eighty-cent  drop in  Target:  2025's
anticipated value at maturity.

     In general,  we've kept Target:  2025's weighted  average  maturity shorter
than that of its  benchmark for two reasons:  (1) the expected  return for zeros
maturing   in  late  2024  and  early  2025  has  been  more   attractive   than
later-maturity ones, and (2) zeros maturing in late 2024 and early 2025 are more
readily available.

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

[right margin]

"THE FUND  RECEIVED  ROUGHLY  $100  MILLION  IN NEW  INVESTMENTS  DURING THE SIX
MONTHS, AND NEARLY ALL OF THE CAPITAL WAS PUT TO WORK IN STRIPS."

PORTFOLIO AT A GLANCE
                            3/31/99           9/30/98
NUMBER OF SECURITIES          20                20
ANTICIPATED GROWTH
   RATE                      5.35%             4.80%
WEIGHTED AVERAGE
   MATURITY DATE            5/1/25            5/30/25
ANTICIPATED VALUE AT
   MATURITY (AVM)(1)        $111.41           $112.23
EXPENSE RATIO (FOR
   INVESTOR CLASS)          0.59%(2)           0.59%

Past performance is no guarantee of future results. Even if fund shares are held
to maturity,  there is no  guarantee  that the fund's share price will reach its
AVM.  There is also no  guarantee  that the AVM will  fluctuate as little in the
future  as it has  in  the  past.  For  more  information,  please  consult  the
prospectus.

(1)  See graph on page 26.
(2)  Annualized.

Investment terms are defined in the Glossary on pages 54-55.


                                                 www.americancentury.com      27


Target: 2025--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

GOING FORWARD, WHAT'S YOUR OUTLOOK FOR THE TREASURY MARKET?

     Many of the trends that caused  Treasury  prices to rise at the end of 1998
disappeared during the first quarter of 1999. On the international  front, Asian
and Latin American  economies  seem to have recovered  somewhat from last year's
crises.  With global markets looking less grim,  "flight-to-quality"  demand for
Treasurys has decreased.  Domestically,  economic  growth  remains  surprisingly
robust--during  the first quarter of 1999, the economy expanded at a 4.5% annual
pace.

     However,  some positive  influences  remain in place.  Inflation is still a
non-issue--prices  rose a mere 1.7% for the  twelve  months  ended  March 31 (as
measured by the government's  consumer price index). As such, we believe there's
little incentive for the Fed to raise interest rates in the near future.

     The first  federal  budget  surplus  in 30 years is also  having a positive
impact on Treasury  prices by reducing the amount of new Treasury bond issuance.
Last year the Treasury Department  discontinued quarterly auctions of three-year
Treasury notes and began auctioning  five-year Treasury notes quarterly,  rather
than monthly. A 30-year bond auction was also eliminated.

     We  wouldn't  be  surprised  if that  trend  continued.  There's  been some
discussion about the Treasury  Department  reducing  two-year note auctions from
monthly to only eight times a year. In addition,  the  elimination of one of the
Treasury's  30-year bond  auctions--which  would reduce the number to only two a
year--is also a possibility.

WITH THAT OUTLOOK IN MIND, WHAT ARE YOUR PLANS FOR THE PORTFOLIO?

     We will continue to focus our efforts to try to meet or beat Target: 2025's
anticipated  value at maturity.  In an effort to  accomplish  that goal, we will
continue to manage Target:  2025 to deliver a pure play on zero-coupon  bonds in
an effort to provide shareholders the total return and interest rate sensitivity
of a zero maturing on November 15, 2025.

     To help keep a lid on turnover and  transaction  costs, we will continue to
use cash  inflows  and  outflows  as  opportunities  to adjust  the  portfolio's
composition and weighted average maturity.  In addition,  we'll continue to look
for attractive opportunities to add REFCORPs to the portfolio.

[left margin]

"THE FIRST FEDERAL BUDGET  SURPLUS IN 30 YEARS IS ALSO HAVING A POSITIVE  IMPACT
ON TREASURY PRICES BY REDUCING THE AMOUNT OF NEW TREASURY BOND ISSUANCE."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

As of March 31, 1999
STRIPS             76%
REFCORPs           24%

As of September 30, 1998
STRIPS             67%
REFCORPs           33%

Security types are defined on pages 54-55.


28      1-800-345-2021


Target: 2025 --Schedule of Investments
- --------------------------------------------------------------------------------

MARCH 31, 1999 (UNAUDITED)

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

ZERO-COUPON U.S. TREASURY SECURITIES(1)--76.2%
            $122,000,000   STRIPS--COUPON, 5.72%,
                              11/15/24                           $  27,194,637
             107,500,000   STRIPS--PRINCIPAL, 6.11%,
                              11/15/24                              24,082,038
             337,900,000   STRIPS--COUPON, 6.07%,
                              2/15/25                               74,207,121
             512,300,000   STRIPS--PRINCIPAL, 6.05%,
                              2/15/25                              113,074,455
             108,000,000   STRIPS--COUPON, 5.81%,
                              5/15/25                               23,408,673
             172,000,000   STRIPS--COUPON, 5.73%,
                              8/15/25                               36,777,061
             106,600,000   STRIPS--PRINCIPAL, 5.90%,
                              8/15/25                               22,910,303
              40,000,000   STRIPS--COUPON, 5.81%,
                              11/15/25                               8,441,608
                                                                 --------------
TOTAL ZERO-COUPON U.S.
TREASURY SECURITIES                                                330,095,896
                                                                 --------------
   (Cost $329,394,684)

ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES(1)--23.8%
              10,000,000   REFCORP STRIPS--COUPON,
                              6.19%, 1/15/24                         2,249,232
              12,000,000   REFCORP STRIPS--COUPON,
                              6.50%, 4/15/24                         2,662,258



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

           $   3,926,000   REFCORP STRIPS--COUPON,
                              7.10%, 7/15/24                      $    858,976
              72,083,000   REFCORP STRIPS--COUPON,
                              6.83%, 10/15/24                       15,556,773
              41,645,000   REFCORP STRIPS--COUPON,
                              6.93%, 1/15/25                         8,852,975
              38,399,000   REFCORP STRIPS--COUPON,
                              6.68%, 4/15/25                         8,052,261
              14,500,000   REFCORP STRIPS--COUPON,
                              6.55%, 7/15/25                         2,998,920
              95,167,000   REFCORP STRIPS--COUPON,
                              6.79%, 10/15/25                       19,416,720
              45,000,000   REFCORP STRIPS--COUPON,
                              6.81%, 1/15/26                         9,043,939
              53,000,000   REFCORP STRIPS--COUPON,
                              6.51%, 4/15/26                        10,494,446
              36,000,000   REFCORP STRIPS--COUPON,
                              7.29%, 7/15/26                         7,030,997
              81,249,000   REFCORP STRIPS--COUPON,
                              6.98%, 10/15/26                       15,655,126
                                                                 --------------
TOTAL ZERO-COUPON U.S. GOVERNMENT
AGENCY SECURITIES                                                  102,872,623
                                                                 --------------
   (Cost $85,873,599)

TOTAL INVESTMENT SECURITIES--100.0%                               $432,968,519
                                                                 ==============
   (Cost $415,268,283)

NOTES TO SCHEDULE OF INVESTMENTS

REFCORP = Resolution Funding Corporation

STRIPS = Separate Trading of Registered Interest and Principal of Securities

(1)  Rates indicated are the yield to maturity at purchase. These securities are
     purchased at a substantial discount from their value at maturity.

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

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

See Notes to Financial Statements


                                                 www.americancentury.com      29


<TABLE>
<CAPTION>
Statements of Assets and Liabilities
- --------------------------------------------------------------------------------
MARCH 31, 1999 (UNAUDITED)

                                               2000           2005            2010
ASSETS
<S>                                            <C>             <C>            <C>
Investment securities, at value
  (identified cost of $210,408,558,
  $543,108,073 and $230,288,094,
  respectively) (Note 3) ...............   $214,005,442   $556,171,838   $242,980,654
Cash ...................................          2,286      1,291,668        464,441
Investment in affiliated money
  market fund (Note 2) .................         50,959        405,582        294,277
Securities lending fee receivable ......           --             --             --
                                           ------------   ------------   ------------
                                            214,058,687    557,869,088    243,739,372
                                           ------------   ------------   ------------

LIABILITIES
Disbursements in excess of
  demand deposit cash ..................        330,141           --             --
Payable for investments purchased ......           --             --             --
Payable for capital shares redeemed ....        128,311        434,119        113,909
Accrued management fees (Note 2) .......        106,236        276,040        121,072
Distribution and service fees
  payable (Note 2) .....................            261            329            235
Payable for trustees' fees and
  expenses .............................            675          1,751            770
                                           ------------   ------------   ------------
                                                565,624        712,239        235,986
                                           ------------   ------------   ------------
Net Assets .............................   $213,493,063   $557,156,849   $243,503,386
                                           ============   ============   ============

NET ASSETS CONSIST OF:
Capital paid in ........................   $206,858,774   $526,902,473   $226,186,360
Undistributed net investment income ....      2,857,653      6,672,182      3,129,184
Accumulated undistributed net
  realized gain on investment
  transactions .........................        179,752     10,518,429      1,495,282
Net unrealized appreciation on
  investments (Note 3) .................      3,596,884     13,063,765     12,692,560
                                           ------------   ------------   ------------
                                           $213,493,063   $557,156,849   $243,503,386
                                           ============   ============   ============

Investor Class
Net assets .............................   $212,819,009   $556,262,433   $242,944,804
Shares outstanding .....................      2,250,045      7,542,630      4,230,261
Net asset value per share ..............   $      94.58   $      73.75   $      57.43

Advisor Class
Net assets .............................   $    674,054   $    894,416   $    558,582
Shares outstanding .....................          7,137         12,150          9,737
Net asset value per share ..............   $      94.45   $      73.61   $      57.37
</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 price of an
individual share, or the net asset value per share.

NET ASSETS are also broken down by capital (money invested by shareholders); net
investment income not yet paid to shareholders;  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


30      1-800-345-2021


<TABLE>
<CAPTION>
Statements of Assets and Liabilities
- --------------------------------------------------------------------------------
                                                                    (Continued)
MARCH 31, 1999 (UNAUDITED)

                                               2015           2020            2025
ASSETS
<S>                                             <C>          <C>           <C>
Investment securities, at value
  (identified cost of $194,704,083,
  $265,094,350 and $415,268,283,
  respectively) (Note 3) ...............   $229,555,220   $361,605,655   $432,968,519
Cash ...................................        488,395      1,650,834     19,673,663
Investment in affiliated money
  market fund (Note 2) .................        128,589        194,789      1,635,312
Securities lending fee receivable ......           --            9,139           --
                                           ------------   ------------   ------------
                                            230,172,204    363,460,417    454,277,494
                                           ------------   ------------   ------------

LIABILITIES
Disbursements in excess of
  demand deposit cash ..................           --             --             --
Payable for investments purchased ......           --             --       11,544,260
Payable for capital shares redeemed ....        260,221        441,311        525,068
Accrued management fees (Note 2) .......        114,583        182,381        170,026
Distribution and service fees
  payable (Note 2) .....................           --              112            149
Payable for trustees' fees and
  expenses .............................            725          1,160          1,086
                                           ------------   ------------   ------------
                                                375,529        624,964     12,240,589
                                           ------------   ------------   ------------
Net Assets .............................   $229,796,675   $362,835,453   $442,036,905
                                           ============   ============   ============

NET ASSETS CONSIST OF:
Capital paid in ........................   $191,348,294   $238,539,051   $419,502,664
Undistributed net investment income ....      2,561,684      4,332,718      3,677,377
Accumulated undistributed
  net realized gain on investment
  transactions .........................      1,035,560     23,452,379      1,156,628
Net unrealized appreciation on
  investments (Note 3) .................     34,851,137     96,511,305     17,700,236
                                           ------------   ------------   ------------
                                           $229,796,675   $362,835,453   $442,036,905
                                           ============   ============   ============

Investor Class
Net assets .............................   $229,796,675   $362,537,899   $441,704,501
Shares outstanding .....................      5,051,981     10,984,477     15,718,619
Net asset value per share ..............   $      45.49   $      33.00   $      28.10

Advisor Class
Net assets .............................            N/A   $    297,554   $    332,404
Shares outstanding .....................            N/A          9,023         11,853
Net asset value per share ..............            N/A   $      32.98   $      28.04
</TABLE>

See Notes to Financial Statements


                                                 www.americancentury.com      31


<TABLE>
<CAPTION>
Statements of Operations
- --------------------------------------------------------------------------------

FOR THE SIX MONTHS ENDED MARCH 31, 1999 (UNAUDITED)

                                           2000           2005             2010
INVESTMENT INCOME
Income:
<S>                                  <C>             <C>             <C>
Interest ............................$  6,574,574    $ 14,819,729    $  7,069,426
Income from securities lending ......        --              --              --
                                     ------------    ------------    ------------
                                        6,574,574      14,819,729       7,069,426
                                     ------------    ------------    ------------
Expenses (Note 2):
Management fees .....................     655,428       1,565,424         732,635
Distribution fees -- Advisor Class ..         261             316             299
Service fees -- Advisor Class .......         261             316             299
Trustees' fees and expenses .........       4,908          10,918           5,394
                                     ------------    ------------    ------------
                                          660,858       1,576,974         738,627
                                     ------------    ------------    ------------
Net investment income ...............   5,913,716      13,242,755       6,330,799
                                     ------------    ------------    ------------

REALIZED AND UNREALIZED
GAIN (LOSS) ON INVESTMENTS
(NOTE 3)
Net realized gain on investments ....     550,618      12,790,401       5,442,123
Change in net unrealized
  appreciation on investments .......  (4,626,613)    (48,319,465)    (33,244,129)
                                     ------------    ------------    ------------
Net realized and unrealized
   loss on investments ..............  (4,075,995)    (35,529,064)    (27,802,006)
                                     ------------    ------------    ------------
Net Increase (Decrease) in
  Net Assets
Resulting from Operations ...........$  1,837,721    $(22,286,309)   $(21,471,207)
                                     ============    ============    ============
</TABLE>

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF OPERATIONS--This  statement breaks down how each
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

* 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


32      1-800-345-2021


<TABLE>
<CAPTION>
Statements of Operations
- --------------------------------------------------------------------------------
                                                                    (Continued)

FOR THE SIX MONTHS ENDED MARCH 31, 1999 (UNAUDITED)

                                          2015             2020            2025
INVESTMENT INCOME
Income:
<S>                                  <C>             <C>             <C>
Interest ............................$  5,149,817    $ 10,370,472    $  8,242,541
Income from securities lending ......        --             9,139          27,022
                                     ------------    ------------    ------------
                                        5,149,817      10,379,611       8,269,563
                                     ------------    ------------    ------------
Expenses (Note 2):
Management fees .....................     548,578       1,203,749         921,830
Distribution fees -- Advisor Class ..        --                78             343
Service fees -- Advisor Class .......        --                78             343
Trustees' fees and expenses .........       4,286           8,440           6,579
                                     ------------    ------------    ------------
                                          552,864       1,212,345         929,095
                                     ------------    ------------    ------------
Net investment income ...............   4,596,953       9,167,266       7,340,468
                                     ------------    ------------    ------------

REALIZED AND UNREALIZED
GAIN (LOSS) ON INVESTMENTS
(NOTE 3)
Net realized gain on investments ....   1,060,175      32,783,641       3,021,874
Change in net unrealized
  appreciation on investments ....... (24,947,891)    (89,377,955)    (52,202,796)
                                     ------------    ------------    ------------
Net realized and unrealized
   loss on investments .............. (23,887,716)    (56,594,314)    (49,180,922)
                                     ------------    ------------    ------------
Net Increase (Decrease) in
  Net Assets
Resulting from Operations ...........$(19,290,763)   $(47,427,048)   $(41,840,454)
                                     ============    ============    ============
</TABLE>

See Notes to Financial Statements


                                                 www.americancentury.com      33


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

SIX MONTHS ENDED MARCH 31, 1999 (UNAUDITED) AND YEAR ENDED SEPTEMBER 30, 1998

                                                2000                            2005                            2010
Increase (Decrease) in Net Assets        1999            1998            1999            1998            1999            1998

OPERATIONS
<S>                                <C>             <C>             <C>             <C>             <C>             <C>
Net investment income .............$   5,913,716   $  13,784,666   $  13,242,755   $  21,177,808   $   6,330,799   $  10,026,197
Net realized gain on investments ..      550,618       6,149,330      12,790,401       5,444,663       5,442,123       2,154,470
Change in net unrealized
  appreciation on investments .....   (4,626,613)        679,135     (48,319,465)     42,618,545     (33,244,129)     34,621,133
                                   -------------   -------------   -------------   -------------   -------------   -------------
Net increase (decrease) in
  net assets resulting
  from operations .................    1,837,721      20,613,131     (22,286,309)     69,241,016     (21,471,207)     46,801,800
                                   -------------   -------------   -------------   -------------   -------------   -------------

DISTRIBUTIONS TO
SHAREHOLDERS
From net investment income:
  Investor Class ..................  (13,127,656)    (15,765,056)    (23,463,873)    (15,987,498)    (11,224,267)     (7,102,391)
  Advisor Class ...................       (3,731)           --            (5,103)           --              (872)           --
From net realized gains
 on investment transactions:
  Investor Class ..................   (3,117,168)           --        (7,397,428)     (1,217,264)     (6,014,304)       (850,424)
  Advisor Class ...................         (897)           --            (1,643)           --              (470)           --
                                   -------------   -------------   -------------   -------------   -------------   -------------
Decrease in net assets from
  distributions to shareholders ...  (16,249,452)    (15,765,056)    (30,868,047)    (17,204,762)    (17,239,913)     (7,952,815)
                                   -------------   -------------   -------------   -------------   -------------   -------------

CAPITAL SHARE
TRANSACTIONS (NOTE 4)
Net increase (decrease) in net
  assets from capital share
  transactions ....................   (9,683,704)    (15,636,711)     76,225,095     200,372,715      (1,613,838)    120,167,530
                                   -------------   -------------   -------------   -------------   -------------   -------------
Net increase (decrease)
  in net assets ...................  (24,095,435)    (10,788,636)     23,070,739     252,408,969     (40,324,958)    159,016,515

NET ASSETS
Beginning of period ...............  237,588,498     248,377,134     534,086,110     281,677,141     283,828,344     124,811,829
                                   -------------   -------------   -------------   -------------   -------------   -------------
End of period .....................$ 213,493,063   $ 237,588,498   $ 557,156,849   $ 534,086,110   $ 243,503,386   $ 283,828,344
                                   =============   =============   =============   =============   =============   =============
Undistributed net investment
  income ..........................$   2,857,653   $  10,075,324   $   6,672,182   $  16,898,403   $   3,129,184   $   8,023,524
                                   =============   =============   =============   =============   =============   =============
</TABLE>

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF CHANGES IN NET ASSETS--These statements show how
each 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


34      1-800-345-2021


<TABLE>
<CAPTION>
Statements of Changes in Net Assets
- --------------------------------------------------------------------------------
                                                                    (Continued)

SIX MONTHS ENDED MARCH 31, 1999 (UNAUDITED) AND YEAR ENDED SEPTEMBER 30, 1998

                                                 2015                            2020                            2025
Increase (Decrease) in Net Assets        1999            1998            1999           1998            1999             1998

OPERATIONS
<S>                                  <C>             <C>             <C>             <C>             <C>             <C>
Net investment income .............  $   4,596,953   $   7,132,681   $   9,167,266   $  27,196,872   $   7,340,468   $  10,439,415
Net realized gain on investments ..      1,060,175         298,681      32,783,641      55,277,618       3,021,874       1,681,458
Change in net unrealized
  appreciation on investments .....    (24,947,891)     29,541,335     (89,377,955)     86,449,383     (52,202,796)     60,753,235
                                     -------------   -------------   -------------   -------------   -------------   -------------
Net increase (decrease) in
  net assets resulting
  from operations .................    (19,290,763)     36,972,697     (47,427,048)    168,923,873     (41,840,454)     72,874,108
                                     -------------   -------------   -------------   -------------   -------------   -------------

DISTRIBUTIONS TO
SHAREHOLDERS
From net investment income:
  Investor Class ..................     (7,536,220)     (6,501,208)    (24,377,620)    (44,888,306)    (12,416,327)     (4,549,154)
  Advisor Class ...................           --              --              (987)           --            (9,148)           --
From net realized gains
 on investment transactions:
  Investor Class ..................       (295,397)     (4,326,524)    (61,543,905)    (41,866,720)     (3,040,070)       (305,669)
  Advisor Class ...................           --              --            (2,512)           --            (2,318)           --
                                     -------------   -------------   -------------   -------------   -------------   -------------
Decrease in net assets from
  distributions to shareholders ...     (7,831,617)    (10,827,732)    (85,925,024)    (86,755,026)    (15,467,863)     (4,854,823)
                                     -------------   -------------   -------------   -------------   -------------   -------------

CAPITAL SHARE
TRANSACTIONS (NOTE 4)
Net increase (decrease) in net
  assets from capital share
  transactions ....................     86,837,808      29,036,713      10,135,754    (149,668,103)    143,133,674     214,370,948
                                     -------------   -------------   -------------   -------------   -------------   -------------
Net increase (decrease)
  in net assets ...................     59,715,428      55,181,678    (123,216,318)    (67,499,256)     85,825,357     282,390,233

NET ASSETS
Beginning of period ...............    170,081,247     114,899,569     486,051,771     553,551,027     356,211,548      73,821,315
                                     -------------   -------------   -------------   -------------   -------------   -------------
End of period .....................  $ 229,796,675   $ 170,081,247   $ 362,835,453   $ 486,051,771   $ 442,036,905   $ 356,211,548
                                     =============   =============   =============   =============   =============   =============
Undistributed net investment
  income ..........................  $   2,561,684   $   5,500,951   $   4,332,718   $  19,544,059   $   3,677,377   $   8,762,384
                                     =============   =============   =============   =============   =============   =============
</TABLE>

See Notes to Financial Statements


                                                 www.americancentury.com      35


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

MARCH 31, 1999 (UNAUDITED)

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     Organization  -- American  Century Target  Maturities  Trust (the trust) is
registered under the Investment  Company Act of 1940 as an open-end  diversified
management  investment  company.  The trust is composed of the following series:
Target 2000 Fund  (2000),  Target  2005 Fund  (2005),  Target 2010 Fund  (2010),
Target 2015 Fund (2015),  Target 2020 Fund  (2020),  and Target 2025 Fund (2025)
(the funds). Each fund seeks to provide the highest attainable investment return
consistent  with  the  creditworthiness  of  U.S.  Treasury  securities  and the
professional  management of  reinvestment  and market  risks.  Each fund invests
primarily in zero-coupon U.S. Treasury securities and will be liquidated shortly
after the  conclusion of its target  maturity  year. The funds are authorized to
issue two classes of shares:  the Investor Class and the Advisor Class.  The two
classes of shares differ principally in their respective  shareholder  servicing
and distribution expenses and arrangements. All shares of the funds 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. Sale of the Advisor Class for
2010 and 2020 commenced on October 20, 1998 and October 19, 1998,  respectively.
Sale of the Advisor Class for 2015 had not commenced as of the report date.  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 -- Securities are valued through a commercial  pricing
service or at the mean of the most recent bid and asked prices.  When valuations
are not readily available,  securities are valued at fair value as determined in
accordance with procedures adopted by the Board of Trustees.

     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 -- Interest  income is recorded on the accrual basis and
includes accretion of discounts and amortization of premiums.

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

     Distributions to Shareholders -- Distributions  from net investment  income
and net realized gains are declared and paid annually in December.

     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.

     Reverse  Share Splits -- The Trustees may  authorize  reverse  share splits
immediately after and of a size that exactly offsets the per share amount of the
annual  dividend  and capital  gain  distribution  (if any).  After  taking into
account the reverse share split, a shareholder reinvesting dividends and capital
gain  distributions  will hold  exactly the same number of shares owned prior to
the  distributions  and reverse share split.  A shareholder  electing to receive
dividends in cash will own fewer shares.

     Additional  Information  -- Funds  Distributor,  Inc.  (FDI) is the trust's
distributor. Certain officers of FDI are also officers of the trust.


36      1-800-345-2021


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

MARCH 31, 1999 (UNAUDITED)

2. TRANSACTIONS WITH RELATED PARTIES

    The trust has entered  into a Management  Agreement  with  American  Century
Investment  Management,  Inc.  (ACIM) that  provides  each fund with  investment
advisory and management  services in exchange for a single,  unified  management
fee per class.  Expenses  excluded  from this  agreement are  brokerage,  taxes,
portfolio  insurance,  interest,  fees and  expenses of the Trustees who are not
considered "interested persons" as defined in the Investment Company Act of 1940
(including counsel fees) and extraordinary expenses. The fee is calculated daily
and paid monthly. It consists of an Investment Category Fee based on the average
net assets of the funds in a specific fund's  investment  category and a Complex
Fee based on the average net assets of all the funds managed by ACIM.  The rates
for the Investment  Category Fee range from 0.2425% to 0.3600% and the rates for
the Complex Fee range from 0.2900% to 0.3100%. The Advisor Class is 0.2500% less
at each point  within the Complex Fee range.  For the six months ended March 31,
1999, the effective  annual Investor Class  management fee was 0.59% for each of
the funds.

    The Board of Trustees 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 by financial  intermediaries 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
under the plan for the period  ending March 31,  1999,  were $522,  $632,  $598,
$156, and $686 for 2000, 2005, 2010, 2020, and 2025, respectively.

    Certain  officers  and  trustees  of the  trust  are  also  officers  and/or
directors,  and,  as a  group,  controlling  stockholders  of  American  Century
Companies,  Inc., the parent of the trust's  investment  manager,  ACIM, and the
trust's transfer agent, American Century Services Corporation.

    As of March 31, 1999, investments in shares of the Capital Preservation Fund
(CPF) were $50,959, $405,582,  $294,277,  $128,589, $194,789, and $1,635,312 for
2000, 2005, 2010, 2015, 2020, and 2025, respectively. CPF is a money market fund
managed by ACIM.  The terms of these  transactions  were identical to those with
non-related  entities  except that, to avoid  duplicative  management  fees, the
funds did not pay ACIM management fees with respect to assets invested in CPF.

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

    Investment  transactions in U.S. Treasury  securities,  excluding short-term
investments, were as follows:

<TABLE>
<CAPTION>
                          2000           2005            2010            2015            2020            2025

<S>                   <C>            <C>              <C>            <C>              <C>            <C>
Purchases             $28,638,220    $409,114,458     $75,703,277    $154,402,499     $80,794,096    $248,607,380
Proceeds from Sales   $66,618,066    $354,820,895     $93,067,887     $75,540,503    $159,946,280    $129,231,150

  On March 31, 1999, the composition of unrealized appreciation and depreciation
of investment  securities based on the aggregate cost of investments for federal
income tax purposes was as follows:

                          2000           2005            2010            2015            2020            2025

Appreciation           $3,750,043     $16,682,243     $15,556,394     $35,171,730     $96,590,960     $22,150,169
Depreciation           (153,159)      (4,002,383)     (3,002,391)      (344,812)       (595,036)      (5,088,323)
                      ------------   -------------   -------------   -------------   -------------   -------------
Net                    $3,596,884     $12,679,860     $12,554,003     $34,826,918     $95,995,924     $17,061,846
                      ============   =============   =============   =============   =============   =============
Federal Tax Cost      $210,408,558   $543,491,978    $230,426,651    $194,728,302    $265,609,731    $415,906,673
                      ============   =============   =============   =============   =============   =============
</TABLE>


                                                 www.americancentury.com      37


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

MARCH 31, 1999 (UNAUDITED)

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

    Transactions  in shares of the funds  were as follows  (unlimited  number of
shares authorized):

<TABLE>
<CAPTION>
                                         2000                           2005                          2010
                                 SHARES        AMOUNT          SHARES         AMOUNT          SHARES         AMOUNT
INVESTOR CLASS
Six months ended
  March 31, 1999
<S>                              <C>       <C>                 <C>         <C>                 <C>         <C>
Sold ....................        474,067   $  44,644,771       3,099,065   $ 234,230,631       2,111,793   $ 127,049,668
Issued in reinvestment
  of distributions ......        181,337      15,837,405         284,344      20,558,418         291,993      16,796,368
Redeemed ................       (752,412)    (70,779,155)     (2,382,578)   (179,368,755)     (2,453,761)   (146,052,167)
Reverse share split .....       (185,659)           --          (418,534)           --          (299,137)           --
                           -------------   -------------   -------------   -------------   -------------   -------------
Net increase (decrease) .       (282,667)  $ (10,296,979)        582,297   $  75,420,294        (349,112)  $  (2,206,131)
                           =============   =============   =============   =============   =============   =============

Year ended
  September 30, 1998
Sold ....................        644,385   $  57,705,555       4,720,449   $ 331,282,758       4,025,597   $ 223,483,879
Issued in reinvestment
  of distributions ......        191,104      15,630,392         270,807      17,061,205         159,789       7,888,903
Redeemed ................       (996,398)    (89,034,661)     (2,122,395)   (148,063,950)     (1,984,180)   (111,205,252)
Reverse share split .....       (192,640)           --          (272,951)           --          (160,955)           --
                           -------------   -------------   -------------   -------------   -------------   -------------
Net increase (decrease) .       (353,549)  $ (15,698,714)      2,595,910   $ 200,280,013       2,040,251   $ 120,167,530
                           =============   =============   =============   =============   =============   =============

ADVISOR CLASS
Six months ended
  March 31, 1999(1)
Sold ....................          6,459   $     608,647          12,393   $     915,755           9,856   $     598,145
Issued in reinvestment
  of distributions ......             53           4,628              41           2,962              23           1,342
Redeemed ................           --              --            (1,500)       (113,916)           (119)         (7,194)
Reverse share split .....            (53)           --               (90)           --               (23)           --
                           -------------   -------------   -------------   -------------   -------------   -------------
Net increase ............          6,459   $     613,275          10,844   $     804,801           9,737   $     592,293
                           =============   =============   =============   =============   =============   =============

Period ended
  September 30, 1998(2)
Sold ....................            678   $      62,003           1,571   $     112,702
Redeemed ................           --              --              (265)        (20,000)
                           -------------   -------------   -------------   -------------
Net increase ............            678   $      62,003           1,306   $      92,702
                           =============   =============   =============   =============
</TABLE>

(1)  October 20, 1998 (commencement of sale) through March 31, 1999 for 2010.

(2)  August 20, 1998  (commencement of sale) through September 30, 1998 for 2000
     and August 3, 1998  (commencement  of sale) through  September 30, 1998 for
     2005.


38      1-800-345-2021


Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)
MARCH 31, 1999 (UNAUDITED)

4. CAPITAL SHARE TRANSACTIONS (CONTINUED)

    Transactions  in shares of the funds  were as follows  (unlimited  number of
shares authorized):

<TABLE>
<CAPTION>
                                       2015                          2020                           2025
                              SHARES         AMOUNT         SHARES         AMOUNT           SHARES         AMOUNT
INVESTOR CLASS
Six months ended
  March 31, 1999
<S>                         <C>           <C>              <C>           <C>              <C>            <C>
Sold ...................... 3,523,760     $168,725,115     6,191,977     $218,714,195     16,636,991     $497,834,734
Issued in reinvestment
  of distributions ........  148,946       7,107,814       2,776,706      81,170,351        483,680       14,680,994
Redeemed ..................(1,867,455)    (88,995,121)    (8,230,023)   (290,053,380)    (12,140,017)    (369,671,590)
Reverse share split .......  (163,477)         --         (2,906,872)        --            (507,854)          --
                           ------------   ------------   ------------   --------------   ------------   --------------
Net increase (decrease) ... 1,641,774     $86,837,808     (2,168,212)   $ 9,831,166       4,472,800      $142,844,138
                           ============   ============   ============   ==============   ============   ==============

Year ended
  September 30, 1998
Sold ...................... 2,651,059     $117,890,797    13,812,474    $442,006,671      24,090,981     $649,193,136
Issued in reinvestment
  of distributions ........  281,652       10,744,494     3,356,693      85,814,004        199,765         4,802,916
Redeemed .................. (2,235,577)   (99,598,578)   (21,005,162)   (677,488,778)    (16,157,277)    (439,697,727)
Reverse share split .......  (283,586)         --         (3,387,874)        --           (201,848)          --
                           ------------   ------------   ------------   --------------   ------------   --------------
Net increase (decrease) ...  413,548      $29,036,713     (7,223,869)   $(149,668,103)     7,931,621     $214,298,325
                           ============   ============   ============   ==============   ============   ==============

ADVISOR CLASS
Six months ended
  March 31, 1999(1)
Sold ..................................................     9,023         $301,089          13,480         $410,032
Issued in reinvestment
  of distributions ....................................      120           3,499             378           11,465
Redeemed ..............................................       --             --             (4,443)        (131,961)
Reverse share split ...................................      (120)           --              (378)            --
                                                         ------------   --------------   ------------   --------------
Net increase ..........................................     9,023         $304,588          9,037          $289,536
                                                         ============   ==============   ============   ==============

Period ended
  September 30, 1998(2)
Sold ..................................................................................     20,572         $568,207
Redeemed ..............................................................................    (17,756)       (495,584)
                                                                                         ------------   --------------
Net increase ..........................................................................     2,816           $72,623
                                                                                         ============   ==============
</TABLE>

(1)  October 19, 1998 (commencement of sale) through March 31, 1999 for 2020.

(2)  June 1, 1998 (commencement of sale) through September 30, 1998 for 2025.


                                                 www.americancentury.com      39


Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)
MARCH 31, 1999 (UNAUDITED)

- --------------------------------------------------------------------------------
5. SECURITIES LENDING

     At March 31, 1999,  securities  valued at $27,392,087 for 2020 were on loan
to brokers.  Securities  received as  collateral,  at this date,  were valued at
$28,591,094.  The fund's risks in  securities  lending are that the borrower may
not provide  additional  collateral  when required or return the securities when
due.

- --------------------------------------------------------------------------------
6. 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  March 31,
1999.

- --------------------------------------------------------------------------------
7. FUND EVENTS

   The following name changes became effective March 1, 1999:

              ===============================================================
               NEW NAME                  FORMER NAME
              ===============================================================

   Fund:       Target 2000 Fund          American Century - Benham Target
                                         Maturities Trust: 2000

   Fund:       Target 2005 Fund          American Century - Benham Target
                                         Maturities Trust: 2005

   Fund:       Target 2010 Fund          American Century - Benham Target
                                         Maturities Trust: 2010

   Fund:       Target 2015 Fund          American Century - Benham Target
                                         Maturities Trust: 2015

   Fund:       Target 2020 Fund          American Century - Benham Target
                                         Maturities Trust: 2020

   Fund:       Target 2025 Fund          American Century - Benham Target
                                         Maturities Trust: 2025


40      1-800-345-2021


Target: 2000 --Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE  OUTSTANDING  THROUGHOUT  THE YEARS  ENDED  SEPTEMBER  30 (EXCEPT AS
NOTED)

<TABLE>
<CAPTION>
                                                                                 Investor Class
                                             1999(1)             1998          1997          1996          1995          1994
PER-SHARE DATA
Net Asset Value,
<S>                                      <C>              <C>           <C>           <C>           <C>           <C>
Beginning of Period .................... $     93.78      $     86.05   $     79.95   $     76.86   $     66.93   $     72.40
                                         -----------      -----------   -----------   -----------   -----------   -----------
Income From Investment Operations
  Net Investment Income(2) .............        2.47             5.13          5.10          4.75          4.37          3.99
  Net Realized and Unrealized Gain
  (Loss) on Investment Transactions ....       (1.67)            2.60          1.00         (1.66)         5.56         (9.46)
                                         -----------      -----------   -----------   -----------   -----------   -----------
  Total From Investment Operations .....        0.80             7.73          6.10          3.09          9.93         (5.47)
                                         -----------      -----------   -----------   -----------   -----------   -----------
Distributions(3)
  From Net Investment Income ...........       (5.57)           (5.64)        (5.20)        (3.94)        (3.42)        (3.25)
  From Net Realized Gains ..............       (1.32)            --            --            --            --           (2.95)
  In Excess of Net Realized Gains ......        --               --            --            --            --           (1.20)
                                         -----------      -----------   -----------   -----------   -----------   -----------
  Total Distributions ..................       (6.89)           (5.64)        (5.20)        (3.94)        (3.42)        (7.40)
                                         -----------      -----------   -----------   -----------   -----------   -----------
Reverse Share Split ....................        6.89             5.64          5.20          3.94          3.42          7.40
                                         -----------      -----------   -----------   -----------   -----------   -----------
Net Asset Value, End of Period ......... $     94.58      $     93.78   $     86.05   $     79.95   $     76.86   $     66.93
                                         ===========      ===========   ===========   ===========   ===========   ===========
  Total Return(4) ......................        0.85%            8.97%         7.64%         4.01%        14.84%        (7.54)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ..................        0.59%(5)         0.59%         0.56%         0.53%         0.63%         0.59%
Ratio of Net Investment Income
to Average Net Assets ..................        5.26%(5)         5.75%         6.14%         5.99%         6.13%         5.74%
Portfolio Turnover Rate ................          13%              82%           10%           29%           53%           89%
Net Assets, End of Period
(in thousands) ......................... $   212,819      $   237,525   $   248,377   $   267,757   $   294,736   $   243,895
</TABLE>

(1)  Six months ended March 31, 1999 (unaudited).

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

(3)  For years ended prior to September 30, 1997,  distributions were calculated
     using average shares outstanding during the year.  Distributions  indicated
     for those years will be different than the actual  per-share  distributions
     to shareholders.

(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.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL HIGHLIGHTS--These  statements 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      41


Target: 2000 --Financial Highlights
- --------------------------------------------------------------------------------
                                                                    (Continued)
FOR A SHARE OUTSTANDING THROUGHOUT THE PERIODS INDICATED

                                                    Advisor Class

                                                 1999(1)      1998(2)
PER-SHARE DATA
Net Asset Value, Beginning of Period ........   $ 93.76        $ 91.41
                                                -------        -------
Income From Investment Operations
  Net Investment Income(3) ..................      2.39           0.54
  Net Realized and Unrealized Gain
   (Loss) on Investment Transactions ........     (1.70)          1.81
                                                -------        -------
  Total From Investment Operations ..........      0.69           2.35
                                                -------        -------
Distributions
  From Net Investment Income ................     (5.50)          --
  From Net Realized Gains ...................     (1.32)          --
                                                -------        -------
  Total Distributions .......................     (6.82)          --
                                                -------        -------
Reverse Share Split .........................      6.82           --
                                                -------        -------
Net Asset Value, End of Period ..............   $ 94.45        $ 93.76
                                                =======        =======
  Total Return(4) ...........................      0.74%          2.57%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
To Average Net Assets .......................      0.84%(5)       0.84%(5)
Ratio of Net Investment Income
To Average Net Assets .......................      5.01%(5)       5.06%(5)
Portfolio Turnover Rate .....................        13%            82%
Net Assets, End of Period
(in thousands) ..............................   $   674        $    64

(1)  Six months ended March 31, 1999 (unaudited).

(2)  August 20, 1998 (commencement of sale) through September 30, 1998.

(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


42      1-800-345-2021


<TABLE>
<CAPTION>
Target: 2005 --Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE  OUTSTANDING  THROUGHOUT  THE YEARS  ENDED  SEPTEMBER  30 (EXCEPT AS
NOTED)

                                                                                   Investor Class
                                             1999(1)              1998           1997           1996           1995           1994
PER-SHARE DATA
Net Asset Value,
<S>                                      <C>               <C>            <C>            <C>            <C>            <C>
Beginning of Period ...................  $     76.72       $     64.54    $     57.83    $     56.61    $     45.22    $     51.84
                                         -----------       -----------    -----------    -----------    -----------    -----------
Income From Investment Operations
  Net Investment Income(2) ............         1.85              3.84           3.74           3.50           3.33           3.11
  Net Realized and Unrealized Gain
  (Loss) on Investment Transactions ...        (4.82)             8.34           2.97          (2.28)          8.06          (9.73)
                                         -----------       -----------    -----------    -----------    -----------    -----------
  Total From Investment Operations ....        (2.97)            12.18           6.71           1.22          11.39          (6.62)
                                         -----------       -----------    -----------    -----------    -----------    -----------
Distributions(3)
  From Net Investment Income ..........        (3.39)            (3.61)         (3.61)         (2.06)         (2.41)         (2.70)
  From Net Realized Gains .............        (1.07)            (0.27)         (0.44)         (0.58)         (0.67)         (8.47)
                                         -----------       -----------    -----------    -----------    -----------    -----------
  Total Distributions .................        (4.46)            (3.88)         (4.05)         (2.64)         (3.08)        (11.17)
                                         -----------       -----------    -----------    -----------    -----------    -----------
Reverse Share Split ...................         4.46              3.88           4.05           2.64           3.08          11.17
                                         -----------       -----------    -----------    -----------    -----------    -----------
Net Asset Value, End of Period ........  $     73.75       $     76.72    $     64.54    $     57.83    $     56.61    $     45.22
                                         ===========       ===========    ===========    ===========    ===========    ===========
  Total Return(4) .....................        (3.87)%           18.87%         11.60%          2.15%         25.16%        (12.75)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets .................         0.59%(5)          0.59%          0.57%          0.58%          0.71%          0.64%
Ratio of Net Investment Income
to Average Net Assets .................         4.93%(5)          5.53%          6.15%          6.05%          6.58%          6.37%
Portfolio Turnover Rate ...............           66%               35%            15%            31%            34%            68%
Net Assets, End of Period
(in thousands) ........................  $   556,262       $   533,986    $   281,677    $   238,864    $   183,452    $    96,207
</TABLE>

(1)  Six months ended March 31, 1999 (unaudited).

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

(3)  For years ended prior to September 30, 1997,  distributions were calculated
     using average shares outstanding during the year.  Distributions  indicated
     for those years will be different than the actual  per-share  distributions
     to shareholders.

(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.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL HIGHLIGHTS--These  statements 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      43


Target: 2005 --Financial Highlights
- --------------------------------------------------------------------------------
                                                                    (Continued)

FOR A SHARE OUTSTANDING THROUGHOUT THE PERIODS INDICATED

                                                        Advisor Class
                                                    1999(1)       1998(2)
PER-SHARE DATA
Net Asset Value, Beginning of Period .............  $ 76.69       $ 70.91
                                                    -------       -------
Income From Investment Operations
  Net Investment Income(3) .......................     1.74          0.58
  Net Realized and Unrealized Gain
  (Loss) on Investment Transactions ..............    (4.82)         5.20
                                                    -------       -------
  Total From Investment Operations ...............    (3.08)         5.78
                                                    -------       -------
Distributions
  From Net Investment Income .....................    (3.32)         --
  From Net Realized Gains ........................    (1.07)         --
                                                    -------       -------
  Total Distributions ............................    (4.39)         --
                                                    -------       -------
Reverse Share Split ..............................     4.39          --
                                                    -------       -------
Net Asset Value, End of Period ...................  $ 73.61       $ 76.69
                                                    =======       =======
  Total Return(4) ................................    (4.02)%        8.15%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ............................     0.84%(5)      0.84%(5)
Ratio of Net Investment Income
to Average Net Assets ............................     4.68%(5)      4.87%(5)
Portfolio Turnover Rate ..........................       66%           35%
Net Assets, End of Period
(in thousands) ...................................  $   894       $   100

(1)  Six months ended March 31, 1999 (unaudited).

(2)  August 3, 1998 (commencement of sale) through September 30, 1998.

(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


44      1-800-345-2021


<TABLE>
<CAPTION>
Target: 2010 --Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED SEPTEMBER 30 (EXCEPT AS NOTED)

                                                                               Investor Class
                                            1999(1)             1998         1997           1996            1995            1994
PER-SHARE DATA
Net Asset Value,
<S>                                      <C>               <C>            <C>            <C>            <C>            <C>
Beginning of Period ...................  $     61.98       $     49.16    $     42.47    $     42.14    $     31.67    $     38.13
                                         -----------       -----------    -----------    -----------    -----------    -----------
Income From Investment Operations
  Net Investment Income(2) ............         1.50              2.94           2.79           2.58           2.41           2.24
  Net Realized and Unrealized Gain
  (Loss) on Investment Transactions ...        (6.05)             9.88           3.90          (2.25)          8.06          (8.70)
                                         -----------       -----------    -----------    -----------    -----------    -----------
  Total From Investment Operations ....        (4.55)            12.82           6.69           0.33          10.47          (6.46)
                                         -----------       -----------    -----------    -----------    -----------    -----------
Distributions(3)
  From Net Investment Income ..........        (2.78)            (2.46)         (2.82)         (1.57)         (1.48)         (1.46)
  From Net Realized Gains .............        (1.49)            (0.29)         (1.17)          --            (0.48)         (4.31)
                                         -----------       -----------    -----------    -----------    -----------    -----------
  Total Distributions .................        (4.27)            (2.75)         (3.99)         (1.57)         (1.96)         (5.77)
                                         -----------       -----------    -----------    -----------    -----------    -----------
Reverse Share Split ...................         4.27              2.75           3.99           1.57           1.96           5.77
                                         -----------       -----------    -----------    -----------    -----------    -----------
Net Asset Value, End of Period ........  $     57.43       $     61.98    $     49.16    $     42.47    $     42.14    $     31.67
                                         ===========       ===========    ===========    ===========    ===========    ===========
  Total Return(4) .....................        (7.34)%           26.08%         15.75%          0.78%         33.06%        (16.92)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets .................         0.59%(5)          0.59%          0.62%          0.67%          0.71%          0.68%
Ratio of Net Investment Income
to Average Net Assets .................         5.05%(5)          5.39%          6.15%          5.98%          6.56%          6.35%
Portfolio Turnover Rate ...............           30%               34%            26%            24%            26%            35%
Net Assets, End of Period
(in thousands) ........................  $   242,945       $   283,828    $   124,812    $   111,117    $    95,057    $    46,312
</TABLE>

(1)  Six months ended March 31, 1999 (unaudited).

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

(3)  For years ended prior to September 30, 1997,  distributions were calculated
     using average shares outstanding during the year.  Distributions  indicated
     for those years will be different than the actual  per-share  distributions
     to shareholders.

(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.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL HIGHLIGHTS--These  statements 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      45


Target: 2010 --Financial Highlights
- --------------------------------------------------------------------------------
                                                                    (Continued)

FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD INDICATED

                                                 Advisor Class
                                                    1999(1)
PER-SHARE DATA
Net Asset Value, Beginning of Period .............  $ 60.12
                                                    -------
Income From Investment Operations
  Net Investment Income(2) .......................     1.28
  Net Realized and Unrealized Loss
  on Investment Transactions .....................    (4.03)
                                                    -------
  Total From Investment Operations ...............    (2.75)
                                                    -------
Distributions
  From Net Investment Income .....................    (2.76)
  From Net Realized Gains ........................    (1.49)
                                                    -------
  Total Distributions ............................    (4.25)
                                                    -------
Reverse Share Split ..............................     4.25
                                                    -------
Net Asset Value, End of Period ...................  $ 57.37
                                                    =======
Total Return(3) ..................................    (4.57)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ............................     0.84%(4)
Ratio of Net Investment Income
to Average Net Assets ............................     4.95%(4)
Portfolio Turnover Rate ..........................       30%
Net Assets, End of Period
(in thousands) ...................................  $   559

(1)  October 20, 1998 (commencement of sale) through March 31, 1999 (unaudited).

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

(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.

                                               See Notes to Financial Statements


46      1-800-345-2021


<TABLE>
<CAPTION>
Target: 2015 --Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED SEPTEMBER 30 (EXCEPT AS NOTED)

                                                                                 Investor Class
                                            1999(1)             1998           1997          1996            1995           1994
PER-SHARE DATA
Net Asset Value,
<S>                                      <C>               <C>            <C>            <C>            <C>            <C>
Beginning of Period ...................  $     49.87       $     38.34    $     31.96    $     32.20    $     22.79    $     29.04
                                         -----------       -----------    -----------    -----------    -----------    -----------
Income From Investment Operations
  Net Investment Income(2) ............         1.16              2.17           2.00           1.85           1.71           1.57
  Net Realized and Unrealized Gain
  (Loss) on Investment Transactions ...        (5.54)             9.36           4.38          (2.09)          7.70          (7.82)
                                         -----------       -----------    -----------    -----------    -----------    -----------
  Total From Investment Operations ....        (4.38)            11.53           6.38          (0.24)          9.41          (6.25)
                                         -----------       -----------    -----------    -----------    -----------    -----------
Distributions(3)
  From Net Investment Income ..........        (2.10)            (2.11)         (2.05)         (1.28)         (0.87)         (1.19)
  From Net Realized Gains .............        (0.08)            (1.40)         (0.34)         (1.61)          --            (7.08)
  In Excess of Net Realized Gains .....         --                --             --             --             --            (0.37)
                                         -----------       -----------    -----------    -----------    -----------    -----------
  Total Distributions .................        (2.18)            (3.51)         (2.39)         (2.89)         (0.87)         (8.64)
                                         -----------       -----------    -----------    -----------    -----------    -----------
Reverse Share Split ...................         2.18              3.51           2.39           2.89           0.87           8.64
                                         -----------       -----------    -----------    -----------    -----------    -----------
Net Asset Value, End of Period ........  $     45.49       $     49.87    $     38.34    $     31.96    $     32.20    $     22.79
                                         ===========       ===========    ===========    ===========    ===========    ===========
  Total Return(4) .....................        (8.78)%           30.07%         19.96%         (0.74)%        41.29%        (21.52)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets .................         0.59%(5)          0.59%          0.61%          0.65%          0.71%          0.68%
Ratio of Net Investment Income
to Average Net Assets .................         4.88%(5)          4.96%          5.79%          5.63%          6.40%          5.97%
Portfolio Turnover Rate ...............           40%               31%            21%            17%            70%            65%
Net Assets, End of Period
(in thousands) ........................  $   229,797       $   170,081    $   114,900    $   115,654    $   114,647    $    66,073
</TABLE>

(1)  Six months ended March 31, 1999 (unaudited).

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

(3)  For years ended prior to September 30, 1997,  distributions were calculated
     using average shares outstanding during the year.  Distributions  indicated
     for those years will be different than the actual  per-share  distributions
     to shareholders.

(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.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL HIGHLIGHTS--These  statements 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      47


<TABLE>
<CAPTION>
Target: 2020 --Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE  OUTSTANDING  THROUGHOUT  THE YEARS  ENDED  SEPTEMBER  30 (EXCEPT AS
NOTED)

                                                                                Investor Class
                                             1999(1)             1998          1997          1996            1995           1994
PER-SHARE DATA
Net Asset Value,
<S>                                      <C>               <C>            <C>            <C>            <C>            <C>
Beginning of Period ...................  $     36.95       $     27.17    $     22.00    $     22.47    $     15.28    $     20.72
                                         -----------       -----------    -----------    -----------    -----------    -----------
Income From Investment Operations
  Net Investment Income(2) ............         0.78              1.53           1.51           1.41           1.19           1.13
  Net Realized and Unrealized Gain
  (Loss) on Investment Transactions ...        (4.73)             8.25           3.66          (1.88)          6.00          (6.57)
                                         -----------       -----------    -----------    -----------    -----------    -----------
  Total From Investment Operations ....        (3.95)             9.78           5.17          (0.47)          7.19          (5.44)
                                         -----------       -----------    -----------    -----------    -----------    -----------
Distributions(3)
  From Net Investment Income ..........        (2.06)            (2.35)         (1.45)         (0.40)         (0.21)         (0.28)
  From Net Realized Gains .............        (5.20)            (2.19)          --            (0.04)          --            (1.31)
  In Excess of Net Realized Gains .....         --                --             --             --             --            (1.18)
                                         -----------       -----------    -----------    -----------    -----------    -----------
  Total Distributions .................        (7.26)            (4.54)         (1.45)         (0.44)         (0.21)         (2.77)
                                         -----------       -----------    -----------    -----------    -----------    -----------
Reverse Share Split ...................         7.26              4.54           1.45           0.44           0.21           2.77
                                         -----------       -----------    -----------    -----------    -----------    -----------
Net Asset Value, End of Period ........  $     33.00       $     36.95    $     27.17    $     22.00    $     22.47    $     15.28
                                         ===========       ===========    ===========    ===========    ===========    ===========
  Total Return(4) .....................       (10.69)%           36.00%         23.50%         (2.09)%        47.05%        (26.25)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets .................         0.59%(5)          0.59%          0.53%          0.61%          0.72%          0.70%
Ratio of Net Investment Income
to Average Net Assets .................         4.45%(5)          4.83%          6.29%          6.25%          6.24%          6.28%
Portfolio Turnover Rate ...............           19%               18%            14%            47%            78%           116%
Net Assets, End of Period
(in thousands) ........................  $   362,538       $   486,052    $   553,551    $   926,319    $   574,702    $    58,535
</TABLE>

(1)  Six months ended March 31, 1999 (unaudited).

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

(3)  For years ended prior to September 30, 1997,  distributions were calculated
     using average shares outstanding during the year.  Distributions  indicated
     for those years will be different than the actual  per-share  distributions
     to shareholders.

(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.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL HIGHLIGHTS--These  statements 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


48      1-800-345-2021


Target: 2020 --Financial Highlights
- --------------------------------------------------------------------------------
                                                                    (Continued)
FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD INDICATED

                                                 Advisor Class
                                                    1999(1)
PER-SHARE DATA
Net Asset Value, Beginning of Period .............  $ 35.50
                                                    -------
Income From Investment Operations
Net Investment Income(2) .........................     0.67
Net Realized and Unrealized Loss
on Investment Transactions .......................    (3.19)
                                                    -------
Total From Investment Operations .................    (2.52)
                                                    -------
Distributions
From Net Investment Income .......................    (2.05)
From Net Realized Gains ..........................    (5.20)
                                                    -------
Total Distributions ..............................    (7.25)
                                                    -------
Reverse Share Split ..............................     7.25
                                                    -------
Net Asset Value, End of Period ...................  $ 32.98
                                                    =======
Total Return(3) ..................................    (7.10)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ............................     0.84%(4)
Ratio of Net Investment Income
to Average Net Assets ............................     4.56%(4)
Portfolio Turnover Rate ..........................       19%
Net Assets, End of Period
(in thousands) ...................................  $   298

(1)  October 19, 1998 (commencement of sale) through March 31, 1999 (unaudited).

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

(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.

See Notes to Financial Statements


                                                 www.americancentury.com      49


<TABLE>
<CAPTION>
Target: 2025 --Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED SEPTEMBER 30 (EXCEPT AS NOTED)

                                                                   Investor Class
                                              1999(1)            1998           1997          1996(2)
PER-SHARE DATA
<S>                                       <C>               <C>            <C>            <C>
Net Asset Value, Beginning of Period ...  $     31.67       $     22.27    $     17.91    $     19.85
                                          -----------       -----------    -----------    -----------
Income From Investment Operations
Net Investment Income(3) ...............         0.70              1.33           1.21           0.72
Net Realized and Unrealized Gain
(Loss) on Investment Transactions ......        (4.27)             8.07           3.15          (2.66)
                                          -----------       -----------    -----------    -----------
Total From Investment Operations .......        (3.57)             9.40           4.36          (1.94)
                                          -----------       -----------    -----------    -----------
Distributions
From Net Investment Income .............        (1.28)            (0.70)         (0.72)          --
From Net Realized Gains ................        (0.31)            (0.05)          --             --
                                          -----------       -----------    -----------    -----------
Total Distributions ....................        (1.59)            (0.75)         (0.72)          --
                                          -----------       -----------    -----------    -----------
Reverse Share Split ....................         1.59              0.75           0.72           --
                                          -----------       -----------    -----------    -----------
Net Asset Value, End of Period .........  $     28.10       $     31.67    $     22.27    $     17.91
                                          ===========       ===========    ===========    ===========
Total Return(4) ........................       (11.27)%           42.21%         24.34%         (9.77)%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ..................         0.59%(5)          0.59%          0.62%          0.67%(5)
Ratio of Net Investment Income
to Average Net Assets ..................         4.64%(5)          4.94%          6.14%          6.57%(5)
Portfolio Turnover Rate ................           39%               52%            58%            61%
Net Assets, End of Period
(in thousands) .........................  $   441,705       $   356,122    $    73,821    $    35,661
</TABLE>

(1)  Six months ended March 31, 1999 (unaudited).

(2)  February 15, 1996 (inception) through September 30, 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.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL HIGHLIGHTS--These  statements 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


50      1-800-345-2021


Target: 2025 --Financial Highlights
- --------------------------------------------------------------------------------
                                                                    (Continued)
FOR A SHARE OUTSTANDING THROUGHOUT THE PERIODS INDICATED

                                                     Advisor Class
                                                 1999(1)      1998(2)
PER-SHARE DATA
Net Asset Value, Beginning of Period ..........  $31.64       $27.27
                                               ----------   ---------
Income From Investment Operations
  Net Investment Income(3) ....................   0.67         0.41
  Net Realized and Unrealized Gain
  (Loss) on Investment Transactions ...........  (4.27)        3.96
                                               ----------   ---------
  Total From Investment Operations ............  (3.60)        4.37
                                               ----------   ---------
Distributions
  From Net Investment Income ..................  (1.23)         --
  From Net Realized Gains .....................  (0.31)         --
                                               ----------   ---------
  Total Distributions .........................  (1.54)         --
                                               ----------   ---------
Reverse Share Split ...........................   1.54          --
                                               ----------   ---------
Net Asset Value, End of Period ................  $28.04       $31.64
                                               ==========   =========
  Total Return(4) ............................. (11.38)%      16.02%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ......................... 0.84%(5)     0.84%(5)
Ratio of Net Investment Income
to Average Net Assets ......................... 4.39%(5)     4.37%(5)
Portfolio Turnover Rate .......................    39%          52%
Net Assets, End of Period
(in thousands) ................................   $332         $89

(1)  Six months ended March 31, 1999 (unaudited).

(2)  June 1, 1998 (commencement of sale) through September 30, 1998.

(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      51


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

SHARE CLASSES

     Two classes of shares are authorized for sale by the funds: Investor Class
and Advisor 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. The price and performance of the Investor Class
shares are listed in newspapers. No other class is currently listed.

     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
is 0.25% higher than the total expense ratio of the Investor Class.  The Advisor
Class had not commenced as of March 31, 1999, for Target: 2015.

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

RETIREMENT ACCOUNT INFORMATION

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

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

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


52      1-800-345-2021


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

INVESTMENT PHILOSOPHY AND POLICIES

     American  Century offers 38 fixed-income  funds,  ranging from money market
portfolios  to long-term  bond funds and including  both taxable and  tax-exempt
funds. Each fund is managed to provide a "pure play" on a specific sector of the
fixed-income market. To ensure adherence to this principle,  the basic structure
of each fund's  portfolio  is tied to a specific  market  index.  Fund  managers
attempt  to add  value by making  modest  portfolio  adjustments  based on their
analysis of  prevailing  market  conditions.  Investment  decisions  are made by
management teams, which meet regularly to discuss market analysis and investment
strategies.

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

     The six Target  Maturities Trust funds,  including  Target:  2000,  Target:
2005,  Target:  2010,  Target:  2015,  Target:  2020, and Target:  2025,  invest
primarily in zero-coupon U.S. Treasury securities and will be liquidated shortly
after the conclusion of their target maturity year. Although these funds offer a
relatively  predictable  return  if held to  maturity,  they may be  subject  to
dramatic price  fluctuations  that can result in significant  gains or losses if
sold prior to maturity.

COMPARATIVE INDICES

     The following index is used in the report for fund performance comparisons.
The index is not an investment product available for purchase.

     The Merrill Lynch  Long-Term  Treasury  Index is an index of U.S.  Treasury
securities with maturities greater than 10 years.

FUND BENCHMARKS

     The  benchmarks  for the Target  Maturities  Trust funds are coupon  STRIPS
issues maturing in the target year of each portfolio.

     The benchmark for the Target:  2000 fund is the 11/15/00  STRIPS Issue -- a
zero-coupon Treasury bond that matures November 15, 2000.

     The benchmark for the Target:  2005 fund is the 11/15/05  STRIPS Issue -- a
zero-coupon Treasury bond that matures November 15, 2005.

     The benchmark for the Target:  2010 fund is the 11/15/10  STRIPS Issue -- a
zero-coupon Treasury bond that matures November 15, 2010.

     The benchmark for the Target:  2015 fund is the 11/15/15  STRIPS Issue -- a
zero-coupon Treasury bond that matures November 15, 2015.

     The benchmark for the Target:  2020 fund is the 11/15/20  STRIPS Issue -- a
zero-coupon Treasury bond that matures November 15, 2020.

     The benchmark for the Target:  2025 fund is the 11/15/25  STRIPS Issue -- a
zero-coupon Treasury bond that matures November 15, 2025.

[right margin]

INVESTMENT TEAM LEADERS
  PORTFOLIO MANAGER
     DAVE SCHROEDER
     JEREMY FLETCHER


                                                 www.americancentury.com      53


Glossary
- --------------------------------------------------------------------------------

INVESTMENT TERMS

* Basis Point -- one  one-hundredth of a percentage point (or 0.01%).  100 basis
points equal one percentage point (or 1%).

* Coupon -- the stated interest rate of a security.

* Yield Curve -- a graphic  representation of the relationship  between maturity
and yield for  fixed-income  securities.  Yield curve  graphs  plot  lengthening
maturities along the horizontal axis and rising yields along the vertical axis.

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  returns,  please  refer  to the  "Financial
Highlights" on pages 41-51.

STATISTICAL TERMINOLOGY

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

* Anticipated  Growth Rate (AGR) --an  approximation  of the annualized  rate of
return that an  investor  may expect  from his  purchase  date to the fund's WAM
date, assuming all dividends and capital gains distributions are reinvested.  It
assumes that the AVM is reached on the WAM date.

*  Weighted  Average  Maturity  (WAM)--  a  measure  of  the  sensitivity  of  a
fixed-income  portfolio to interest rate changes. WAM indicates the average time
until the securities in the portfolio mature, weighted by dollar amount.

* Weighted  Average Maturity Date (WAM Date) -- an average of the maturity dates
of a  portfolio's  securities,  weighted  by  dollar  amount.  The  WAM  date is
calculated based on the WAM of the portfolio's investments on a given day.

*  Anticipated  Value at Maturity  (AVM) -- the expected  redemption  value of a
portfolio share on the  portfolio's  WAM date.  (Even if fund shares are held to
maturity,  there is no guarantee  that the fund's share price will reach its AVM
or that the AGR will be realized.)

* Expense Ratio -- the operating expenses of the fund, expressed as a percentage
of average net assets. (See Note 2 in the Notes to Financial Statements.)

TYPES OF SECURITIES

* Zero-Coupon  Bonds (Zeros)  --bonds that make no periodic  interest  payments.
Instead,  they are sold at a deep discount and then redeemed for their full face
value at maturity.  When held to maturity, a zero's entire return comes from the
difference between its purchase price and its value at maturity.

TYPES OF ZEROS

* STRIPS (SEPARATE TRADING OF REGISTERED INTEREST AND PRINCIPAL OF SECURITIES)--
the U.S.  Treasury  Department  program  that allows  broker-dealers  to "strip"
Treasury  securities into their component parts. The securities  created by this
"stripping" activity are also known as STRIPS.  STRIPS are direct obligations of
the U.S.  government  and are the most liquid  (easily bought and sold) Treasury
zeros.


54      1-800-345-2021


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

*    REFCORPs (RESOLUTION FUNDING CORPORATION ZEROS) -- zeros created from bonds
issued by the Resolution Funding Corporation, a U.S. government agency. The
principal portions of these bonds are secured by Treasury zeros, and the
interest portions are guaranteed by the U.S. Treasury. REFCORPs are also
relatively liquid.

* Receipt Zeros -- zeros created and issued by broker-dealers  before the STRIPS
program  was  implemented  in  1985.  Broker-dealers  created  receipt  zeros by
purchasing Treasury bonds, depositing them in a custodian bank, and then selling
receipts  representing  ownership  interest in the interest coupons or principal
portions of the bonds. The types of receipt zeros include:

     TRs (TREASURY RECEIPTS)--generic receipt zeros.

     ETRs (EASY-GROWTH TREASURY RECEIPTS)--issued by Dean Witter Reynolds, Inc.

* BECCs -- principal  zeros that have been converted  from physical  delivery to
wirable (i.e., able to be transferred electronically) form.

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 generally 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.


                                                 www.americancentury.com      55


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


56      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
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 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 TARGET MATURITIES TRUST

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-16273                      (c)1999 American Century Services Corporation


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