AMERICAN CENTURY TARGET MATURITIES TRUST
N-30D, 1998-11-24
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[front cover]                                                 September 30, 1998

ANNUAL REPORT
- -----------------
AMERICAN CENTURY

                               [graphic of stairs]

BENHAM GROUP
- ------------------------------------
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]


A Note from the Founder
- --------------------------------------------------------------------------------

     On our 40th  anniversary,  I would  personally  like to express my profound
appreciation  for the  confidence  you have shown in  American  Century.  We are
grateful for the opportunity to manage your money,  and we will do our utmost to
continue to meet your expectations and justify your confidence in us.

     I  founded  American  Century  on  the  belief  that  if we  can  make  you
successful,  you, in turn,  will make us successful.  That is the principle that
will guide us in the future.

     Sincerely,
     /s/James E. Stowers


About our New Report Design
- --------------------------------------------------------------------------------

Why We Changed

We're trying hard to be reader-friendly.  Our reports contain a lot of very good
information, from fund statistics and financials to Q&A's with fund managers. We
hope the new design will make the reports more  interesting  and  understandable
while helping you keep abreast of your fund's strategy and performance.

What's New

The reports are designed to be attractive and easy to use whether you're reading
them in depth or just skimming.

     New features include:

* Larger type size in many sections.
* Brief explanations of the financial statements.
* More prominent graphs and charts.
* Quotes in the margins to highlight report content.

THE BOTTOM LINE.

The new design  actually  costs  slightly less than the old one. We  reallocated
costs and eliminated a cover letter and the envelope that  previously  came with
your  report  enclosed.  This not only saves  money,  but  reduces the number of
mailing pieces you receive.

The new  reports  also use  roughly  the same  amount  of paper as the old ones.
Previously,  paper was trimmed  and thrown  away to produce  the smaller  report
size.

We believe we've come up with a more interesting,  informative and user-friendly
publication.

We hope you enjoy it.

[left margin]

Benham Group
Target Maturities Trust: 2000
(BTMTX)

Benham Group
Target Maturities Trust: 2005
(BTFIX)

Benham Group
Target Maturities Trust: 2010
(BTTNX)

Benham Group
Target Maturities Trust: 2015
(BTFTX)

Benham Group
Target Maturities Trust: 2020
(BTTTX)

Benham Group
Target Maturities Trust: 2025
(BTTRX)

[40 Years logo]
Four Decades of Serving Investors
40 Years
American Century
1958-1998


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.

     During the year ended September 30, 1998,  interest rates fell worldwide as
investors reacted to worsening global economic and financial conditions. To help
stem the negative  tide,  the Federal  Reserve (the U.S.  central  bank) cut its
bellwether  federal  funds rate for the first time in almost  three  years.  Two
weeks later, it cut the rate again, providing a significant  psychological boost
to  investors as well as to the U.S.  economy.  But by the time the Fed acted in
September and October,  falling  interest rates,  combined with increased demand
for the relative  safety of U.S.  Treasury  securities,  had already  sparked an
exciting rally in the Treasury market,  the biggest since the Fed last cut rates
in 1995.

     Zero-coupon  Treasury bonds,  which comprise the Target funds and are among
the  securities  most  sensitive to interest  rate  changes,  flourished.  Total
returns ranged from nearly 10% for the  shortest-maturity  zeros to over 40% for
30-year zeros.  This was in sharp  contrast to U.S.  stock index returns,  which
were generally  below 10% and in many cases were negative for the period.  Money
market securities continued to be a stable investment.

     This  volatile   market   environment   illustrated  the  importance  of  a
diversified  investment  portfolio.  As we saw in the  summer  and fall of 1998,
allocating  your assets  among  stocks,  bonds,  and money market funds can help
weatherproof  your  portfolio  against  changes in the  economic  or  investment
climate.

     On the corporate  front,  we have a substantial  effort underway to prepare
American  Century's  computer  systems  for the  year  2000  (Y2K).  Our team of
technology  professionals is working to address Y2K-related issues.  Through the
rest of 1998 and 1999,  we will be  extensively  testing our systems,  including
those  involved  with  dividend  payments,  to verify the  accuracy  of dividend
calculations and distributions.

     Finally,  we hope you like the new design of this report.  It's intended to
make the important information you need about your fund easier to find and read.

     We appreciate your investment with 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 ................................................    6
   Management Q&A .........................................................    7
   Schedule of Investments ................................................    9
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
   Report of Independent
   Accountants ............................................................   50
OTHER INFORMATION
   Share Class and Retirement
   Account Information ....................................................   51
   Background Information
      Investment Philosophy
      and Policies ........................................................   52
      Comparative Indices .................................................   52
      Fund Benchmarks .....................................................   52
      Investment Team
      Leaders .............................................................   52
   Glossary ...............................................................   53


                                                  www.americancentury.com      1


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

MARKET PERSPECTIVE

*   Zero-coupon  Treasury  bonds posted  extraordinary  returns  during the year
    ended September 30, 1998.

*   Interest rates fell dramatically for several reasons:

     *   Global economic problems led to lower expectations for U.S. economic
         growth and inflation.

     *   Investors worldwide flocked to U.S. bonds as a safe haven from global
         turmoil.

     *   A federal budget surplus reduced supply in the Treasury market.

*    Strong  demand for zeros  maturing in 2-5 years caused their yields to fall
     below the yields of one-year zeros.

*   The yield difference between STRIPS and REFCORPs widened late in the period,
    resulting in better performance for STRIPS.

*   Going  forward,  we think it is unlikely  that the  declining  interest rate
    trend will continue.

TARGET: 2000

*   The fund's  healthy  one-year  return (see the table at left)  reflected the
    declining interest rate environment.

*   We reduced Target: 2000's STRIPS position by one-third, replacing it with
    REFCORPs and physical zeros.

*   The  physical   zeros  were   converted  to  wirable   (able  to  be  traded
    electronically) zeros called BECCs.

*   The portfolio's  weighted average  maturity date lengthened  slightly during
    the fiscal year.

*   Going forward,  we will look to add more REFCORPs,  which  currently offer a
    significant yield advantage over STRIPS.

TARGET: 2005

*   The fund's  healthy  one-year  return (see the table at left)  reflected the
    declining interest rate environment.

*   Target: 2005's assets nearly doubled in the last year, and we invested most
    of the new money in STRIPS.

*   We also  purchased some physical  zeros,  which we then converted to wirable
    (able to be traded electronically) zeros called BECCs.

*   The portfolio's  weighted average maturity date lengthened in early 1998 but
    ended the period little changed.

*   Going forward,  we will look to add more REFCORPs,  which  currently offer a
    significant yield advantage over STRIPS.

TARGET: 2010

*   The  fund's  one-year  return  of more  than  25%  (see  the  table at left)
    reflected the declining interest rate environment.

*   Target: 2010 attracted more than $100 million in new investments  over the
    last year, and we invested this money equally among STRIPS and REFCORPs.

*   The portfolio's  weighted average  maturity date lengthened  slightly during
    the fiscal year.

*   Going forward,  we will look to add more REFCORPs,  which  currently offer a
    significant yield advantage over STRIPS.

[left margin]

             TARGET: 2000(1)
                 (BTMTX)
TOTAL RETURNS:               AS OF 9/30/98
    6 Months ..................   5.31%(2)
    1 Year ....................      8.97%
NET ASSETS:                 $237.5 million
INCEPTION DATE:                    3/25/85

             TARGET: 2005(1)
                 (BTFIX)
TOTAL RETURNS:               AS OF 9/30/98
    6 Months ..................  11.95%(2)
    1 Year ....................     18.87%
NET ASSETS:                 $534.0 million
INCEPTION DATE:                    3/25/85

             TARGET: 2010(1)
                 (BTTNX)
TOTAL RETURNS:               AS OF 9/30/98
    6 Months ..................  15.89%(2)
    1 Year ....................     26.08%
NET ASSETS:                 $283.8 million
INCEPTION DATE:                    3/25/85

(1)  Investor Class.
(2)  Not annualized.

See Total  Returns on pages 6, 10, and 14.  Investment  terms are defined in the
Glossary on page 53.


2      1-800-345-2021


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

TARGET: 2015

*   The  fund's  one-year  return  of more  than 30% (see  the  table at  right)
    reflected the declining interest rate environment.

*   We made few changes to Target: 2015's portfolio, retaining an equal balance
    between STRIPS and REFCORPs.

*   The portfolio's  weighted  average  maturity date remained very close to the
    maturity date of the benchmark.

*   Going forward,  we will look to add more REFCORPs,  which  currently offer a
    significant yield advantage over STRIPS.

TARGET: 2020

*   The  fund's  one-year  return  of more  than 35% (see  the  table at  right)
    reflected the declining interest rate environment.

*   Net  withdrawals  totaled more than $150 million in Target:  2020 during the
    past  year,  so we  sold  a  number  of  the  fund's  zeros  to  meet  these
    withdrawals.

*   These sales, combined with the exceptional performance of zeros, will result
    in an unusually large capital gains distribution in December 1998 (see pages
    23-24 for more details).

*   Despite the selling activity, the portfolio's weighted average maturity date
    remained steady.

*   Going forward,  we will look to add more REFCORPs,  which  currently offer a
    significant yield advantage over STRIPS.

*   If cash outflows  continue,  we plan to sell STRIPS,  further increasing the
    percentage of REFCORPs in the portfolio.

TARGET: 2025

*   The  fund's  one-year  return  of more  than 40% (see  the  table at  right)
    reflected the declining interest rate environment.

*   Target: 2025 attracted more than $200 million in new investments over the
    last year, and we invested most of this money in STRIPS.

*   We shortened  the  portfolio's  weighted  average  maturity  date during the
    fiscal year because yields and returns are higher on shorter-term securities
    in this part of the market.

*   We continued to use securities lending as a way to enhance returns.

*   Going forward, we will maintain a shorter maturity date and look to add more
    REFCORPs, which currently offer a significant yield advantage over STRIPS.

[right margin]

              TARGET: 2015(1)
                 (BTFTX)
TOTAL RETURNS:              AS OF 9/30/98
    6 Months .................  15.79%(2)
    1 Year ...................     30.07%
NET ASSETS:                $170.1 million
INCEPTION DATE:                    9/1/86

              TARGET: 2020(1)
                 (BTTTX)
TOTAL RETURNS:              AS OF 9/30/98
    6 Months .................  17.98%(2)
    1 Year ...................     36.00%
NET ASSETS:                $486.1 million
INCEPTION DATE:                  12/29/89

              TARGET: 2025(1)
                 (BTTRX)
TOTAL RETURNS:              AS OF 9/30/98
    6 Months .................  22.09%(2)
    1 Year ...................     42.21%
NET ASSETS:                $356.1 million
INCEPTION DATE:                   2/15/96

(1)  Investor Class.
(2)  Not annualized.

See Total Returns on pages 18, 22, and 26.  Investment  terms are defined in the
Glossary on page 53.


                                                  www.americancentury.com      3


Market Perspective from Randall W. Merk
- --------------------------------------------------------------------------------
/photo of Randall W. Merk/
Randall W. Merk, director of fixed-income investing at American Century

EXTRAORDINARY RETURNS

     Zero-coupon  Treasury securities (zeros) posted remarkable gains during the
year ended  September 30, 1998. A sharp decline in U.S.  interest rates led to a
dramatic increase in zero-coupon bond prices.

     Longer-term  zeros,  which are most  sensitive  to interest  rate  changes,
racked  up the  most  impressive  gains.  Returns  ranged  from  nearly  10% for
short-term  zeros to more than 40% for  long-term  zeros  (see the  accompanying
table for specific returns).

FALLING INTEREST RATES

     Interest rates fell substantially  across the board, sending bond yields to
record  lows--the yield on an ordinary 30-year Treasury bond reached an all-time
low of  4.97%  at the end of  September  (it  dipped  as low as  4.71%  in early
October).  Among  zeros,  long-term  yields fell about 120 basis points (a basis
point equals 0.01%), while short- and  intermediate-term  yields dropped 150-160
basis points (see the chart at left).

     There were several reasons for the precipitous decline in rates:

*    Global  economic  turmoil--a  series of financial  crises  around the world
     threatened  to apply the brakes to global  economic  growth.  Financial and
     economic  problems  in Asia  came to light in late 1997 and  mushroomed  in
     1998. By mid-1998,  the contagion had spread to Russia,  which devalued its
     currency and defaulted on government debt, as well as Latin America,  where
     Brazil tried to fend off its own currency devaluation.

        These crises calmed fears that inflationary pressures were intensifying.
     This was especially  welcome in the U.S.,  where healthy  economic  growth,
     robust consumer spending,  and a 28-year low in unemployment had raised the
     possibility of a short-term interest rate increase by the Federal Reserve.

        By August,  however,  it was clear that the world's  economic engine was
     downshifting.  The  tranquilizing  effect on inflation and the U.S. economy
     was so  pronounced  that  the Fed  lowered  short-term  interest  rates  in
     September--its first rate cut in three years.

*    Flight to quality--the  global economic problems wreaked havoc on stock and
     bond markets  worldwide.  Investors  grew  concerned  about the outlook for
     corporate  profits,  while  a  number  of  foreign  debt  markets  suffered
     downgrades and defaults.  The ensuing  market  volatility  created  greater
     demand for the safety and liquidity of U.S. Treasury bonds.

        In addition, many large, sophisticated  investors--such as international
     bond  traders  and hedge  funds--were  buying  Treasurys  to  unwind  short
     positions. Many traders and hedge funds "shorted"

[left margin]

"A SHARP DECLINE IN U.S. INTEREST RATES LED TO A DRAMATIC INCREASE IN
ZERO-COUPON BOND PRICES."

[line chart - data below]

SHIFTING YIELD CURVE FOR TREASURY ZEROS

Years to Maturity   9/30/97       3/31/98       9/30/98
1                   5.670%        5.600%        4.500%
2                   5.840%        5.610%        4.340%
3                   5.910%        5.670%        4.380%
4                   5.990%        5.680%        4.360%
5                   6.010%        5.750%        4.370%
6                   6.095%        5.780%        4.445%
7                   6.180%        5.810%        4.520%
8                   6.230%        5.847%        4.604%
9                   6.280%        5.883%        4.688%
10                  6.330%        5.920%        4.772%
11                  6.370%        5.952%        4.856%
12                  6.410%        5.984%        4.940%
13                  6.450%        6.016%        5.020%
14                  6.490%        6.048%        5.100%
15                  6.530%        6.080%        5.180%
16                  6.548%        6.090%        5.260%
17                  6.566%        6.100%        5.340%
18                  6.584%        6.110%        5.358%
19                  6.602%        6.120%        5.376%
20                  6.620%        6.130%        5.394%
21                  6.614%        6.126%        5.412%
22                  6.608%        6.122%        5.430%
23                  6.602%        6.118%        5.406%
24                  6.596%        6.114%        5.382%
25                  6.590%        6.110%        5.358%
26                  6.556%        6.088%        5.334%
27                  6.522%        6.066%        5.310%
28                  6.488%        6.044%        5.280%
29                  6.454%        6.022%        5.250%
30                  6.420%        6.000%        5.220%

ZERO-COUPON TREASURY BOND RETURNS
(FOR THE YEAR ENDED 9/30/98)

Coupon STRIPS maturing 11/15/00 9.49%
Coupon STRIPS maturing 11/15/05 19.35%
Coupon STRIPS maturing 11/15/10 26.93%
Coupon STRIPS maturing 11/15/15 30.68%
Coupon STRIPS maturing 11/15/20 36.91% 
Coupon STRIPS maturing 11/15/25 43.68%

Source: Bloomberg Financial Markets


4      1-800-345-2021


Market Perspective from Randall W. Merk
- --------------------------------------------------------------------------------
                                                                    (Continued)

     Treasury securities--by  borrowing Treasurys and selling them--and used the
     proceeds to buy  emerging-market  bonds,  which they expected to outperform
     Treasurys.  When the opposite happened, these investors were forced to sell
     their emerging-market debt and buy back Treasurys to cut their losses.

*    Reduced  supply--the  first federal  budget surplus in 30 years reduced the
     amount of new Treasury  bond  issuance.  Quarterly  auctions of  three-year
     Treasury notes were discontinued, five-year Treasury note auctions were cut
     back from monthly to quarterly,  and a 30-year bond auction was eliminated.
     Increased  issuance of  inflation-adjusted  bonds  further  limited the new
     supply of Treasury notes and bonds.

YIELD CURVE GYRATIONS

     In  late  1997  and  early  1998,  the  zero-coupon  Treasury  yield  curve
flattened--long-term  yields fell more sharply than  short-term  yields (see the
yield curve chart on page 4).  Long-term  yields dropped because U.S.  inflation
remained  extremely low, but robust economic growth and the possibility of a Fed
rate hike kept short-term yields relatively steady.

     The situation reversed in mid-1998. The global turmoil lowered expectations
for both inflation and domestic economic growth. Instead of a Fed rate increase,
investors  began to  anticipate  lower  rates,  and  short-term  yields  dropped
significantly.  As a result,  we saw a classic  steeper  yield curve as economic
growth slowed over the last six months of the period.

     By  September,  the zero yield curve became  inverted at the short end (see
the chart). Under normal circumstances, the shorter a zero's maturity, the lower
its yield. At the end of the period,  however,  zeros maturing in 2-5 years were
yielding 12-15 basis points less than one-year  zeros.  The main reason for this
was the strong demand from flight-to-quality  investors, who wanted not only the
stability  and  liquidity  of the  world's  largest  debt  market,  but  also an
opportunity to earn some price gains as interest rates fell.

ZERO-COUPON YIELD SPREADS WIDENED

     STRIPS,  which are  created by  "stripping"  Treasury  notes and bonds into
their component  parts,  make up the vast majority of the  zero-coupon  Treasury
market. The yields of STRIPS are often compared to those of REFCORPs, which were
created by stripping bonds issued by the Resolution Funding Corporation.

     The Resolution Funding Corporation is a government agency that issued bonds
between  1989 and 1992 to help the  government  liquidate  the  assets of failed
savings  and  loans.  The  principal  portion of  REFCORP  bonds are  secured by
Treasury STRIPS,  and the interest payments are guaranteed by the Treasury.  But
because  REFCORPs  are  not  direct  obligations  of  the  Treasury,  they  have
historically  offered slightly higher yields than STRIPS as compensation for the
minimal amount of credit risk.

     In the last few years, the yield difference--or  spread--between STRIPS and
REFCORPs has narrowed,  so REFCORPs have generally  outperformed  STRIPS. In the
past few months,  however,  yield spreads  widened  because of strong demand for
Treasury bonds (see the accompanying  chart). As a result,  STRIPS  outperformed
REFCORPs over the past year.

[right margin]

[line chart - data below]

YIELD SPREAD BETWEEN REFCORPS AND
STRIPS MATURING IN 2020 (IN BASIS POINTS)

DATE                SPREAD
9/30/97              13.0
10/10/97             13.2
10/17/97             13.4
10/24/97             13.2
10/31/97             13.8
11/7/97              13.7
11/14/97             13.1
11/21/97             13.1
11/28/97             13.1
12/5/97              13.5
12/12/97             13.1
12/19/97             13.2
12/26/97             13.0
1/2/98               13.2
1/9/98               13.2
1/16/98              13.0
1/23/98              13.1
1/30/98              13.4
2/6/98               13.2
2/13/98              13.0
2/20/98              13.1
2/27/98              13.2
3/6/98               13.1
3/13/98              13.0
3/20/98              13.1
3/27/98              12.9
4/3/98               13.5
4/10/98              13.3
4/17/98              13.2
4/24/98              13.0
5/1/98               13.2
5/8/98               12.9
5/15/98              13.4
5/22/98              13.1
5/29/98              13.0
6/5/98               13.0
6/12/98              13.3
6/19/98              13.3
6/26/98              12.8
7/3/98               13.0
7/10/98              13.0
7/17/98              12.9
7/24/98              13.1
7/31/98              13.4
8/7/98               13.4
8/14/98              13.5
8/21/98              14.3
8/28/98              15.6
9/4/98               15.8
9/11/98              15.7
9/18/98              15.2
9/30/98              15.6

Source: Salomon Brothers

"THE TRANQUILIZING  EFFECT [OF GLOBAL TURMOIL] ON INFLATION AND THE U.S. ECONOMY
WAS  SO  PRONOUNCED   THAT  THE  FED  LOWERED   SHORT-TERM   INTEREST  RATES  IN
SEPTEMBER--ITS FIRST RATE CUT IN THREE YEARS."


                                                  www.americancentury.com      5


Target: 2000--Performance
- --------------------------------------------------------------------------------
TOTAL RETURNS AS OF SEPTEMBER 30, 1998

<TABLE>
<CAPTION>
                           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)            5.31%              5.51%            12.91%              --                --                 --
1 YEAR                 8.97%              9.49%            21.97%              --                --                 --
- --------------------------------------------------------------------------------------------------------------------------
AVERAGE ANNUAL RETURNS
3 YEARS                6.85%              7.41%            12.21%              --                --                 --
5 YEARS                5.31%              5.74%             9.18%              --                --                 --
10 YEARS               9.98%             10.45%            11.80%              --                --                 --
LIFE OF FUND          12.31%             13.65%(2)         12.86%(2)          2.57%             2.58%              6.30%

(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  51-53  for  more  information  about  share  classes,  returns,  the
comparative index, and the fund's benchmark.
</TABLE>

[mountain chart - data below]

GROWTH OF $10,000 OVER 1O YEARS

Value on 9/30/98
Target: 2000                    $25,892
11/15/00 STRIPS Issue           $27,028
Merrill Lynch Long-Term Index   $30,519

                  Target:          11/15/00        Merrill Lynch
                   2000          STRIPS Issue     Long-Term Index
DATE               VALUE             VALUE             VALUE
9/30/88           $10,000           $10,000           $10,000
9/30/89           $11,814           $11,831           $11,579
9/30/90           $11,903           $12,047           $11,876
9/30/91           $14,543           $14,812           $14,310
9/30/92           $17,163           $17,520           $16,349
9/30/93           $19,988           $20,449           $19,670
9/30/94           $18,481           $18,930           $17,581
9/30/95           $21,224           $21,815           $21,601
9/30/96           $22,077           $22,826           $22,110
9/30/97           $23,764           $24,686           $25,022
9/30/98           $25,892           $27,028           $30,519

$10,000 investment made 9/30/88

The chart 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)    $93.78
Anticipated Value at Maturity
  (Estimated Share Price)         $101.78

          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

2000


The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 53), 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 charts 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.


6      1-800-345-2021


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 PAST YEAR?

     Target:  2000 performed very well,  reflecting the declining  interest rate
environment  (see pages 4-5). For the fiscal year ended  September 30, 1998, the
portfolio's Investor Class shares returned 8.97%, compared with the 9.49% return
of its benchmark,  a STRIPS issue maturing on November 15, 2000.  (See the Total
Returns table on the previous page for other fund performance comparisons.)

     It's  important  to note that the fund's  return is  reduced by  management
expenses and transaction costs, while the benchmark's is not.

WHAT CHANGES DID YOU MAKE TO THE PORTFOLIO DURING THE PAST YEAR?

     We made a few adjustments designed to increase the portfolio's  anticipated
value at maturity (AVM), which grew by 65 cents during the fiscal year.

     The best way to boost the AVM is to seek out  higher  yields.  As such,  we
significantly  reduced our holdings of STRIPS from 62% to 40% of the  portfolio.
In place of the STRIPS,  we added about a 10% position in REFCORPs,  which offer
higher yields than STRIPS.

     We also purchased  several  physical zeros that were principal  portions of
Treasury bonds. At the time we bought them, their yields were 20-25 basis points
(a basis point equals 0.01%) higher than STRIPS.  A few months ago, we converted
these physical zeros into BECCs.

WHAT ARE BECCS?

     BECC stands for Book Entry Callable Corpus,  and the securities are derived
from a Treasury  program that allows  conversion of physical  zeros into wirable
securities.  Today, virtually all Treasury securities are wirable,  meaning that
they can be  traded  electronically.  But  there are still a few zeros out there
that  are  traded  in  physical   form--actual  interest  coupons  or  principal
certificates of Treasury bonds held by clearing banks.

     Through the Treasury,  however,  it is possible to exchange a physical zero
for a wirable  zero.  Physical  coupon zeros are converted  into CUBES  (Coupons
Under Book Entry Safekeeping), while physical principal zeros are converted into
BECCs.

     We expect our BECCs to  increase  in value  because  they are now easier to
trade--they can be transferred over the Federal Reserve book-entry system,  just
like STRIPS.

[right margin]

"THE BEST WAY TO BOOST THE AVM IS TO SEEK OUT HIGHER YIELDS. AS SUCH, WE
SIGNIFICANTLY REDUCED OUR HOLDINGS OF STRIPS FROM 62% TO 40% OF THE PORTFOLIO."

PORTFOLIO AT A GLANCE
                             9/30/98           9/30/97
NUMBER OF SECURITIES           52                31
ANTICIPATED GROWTH
  RATE                        3.81%             5.24%
WEIGHTED AVERAGE
  MATURITY DATE             12/01/00          11/14/00
ANTICIPATED VALUE AT
  MATURITY (AVM)*            $101.78           $101.13
EXPENSE RATIO (FOR
  INVESTOR CLASS)             0.59%             0.56%

* See graph on page 6.

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.

Investment terms are defined in the Glossary on page 53.


                                                  www.americancentury.com      7


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

WHAT OTHER CHANGES DID YOU MAKE TO THE TARGET: 2000 PORTFOLIO?

     Recently,  we've been  selling  zeros  maturing  in 2000 and  buying  zeros
maturing  in 1999 and 2001.  The  reason is that  unusually  strong  demand  for
two-year   Treasury   notes--which   mature  in  2000--has  driven  yields  down
dramatically, and this has carried over to the zero-coupon market.

     As a result,  we've been able to sell some of our zeros maturing in 2000 at
a profit and find better yields among one- and three-year zeros.

DID THIS TRADING  ACTIVITY HAVE ANY EFFECT ON THE PORTFOLIO'S  WEIGHTED  AVERAGE
MATURITY (WAM) DATE?

     The fund's WAM date extended from  mid-November to December 2000 during the
past six months.  Part of this was the BECCs, which have a late maturity date in
2001,  and part of it was the recent  addition  of several  other  2001-maturity
zeros.

     Despite these  trades,  however,  most of the zeros in the portfolio  still
mature in 2000.  We're  required to keep 90% of fund assets in zeros that mature
between 1999 and 2001; we've kept 100% of the portfolio within this range.

LOOKING AHEAD, WHAT'S YOUR OUTLOOK FOR U.S. INTEREST RATES?

     Interest  rates have come down  dramatically  in the past year,  and that's
meant great returns for U.S. bond investors.  But with rates at 30-year lows, we
think it's becoming more unlikely that this trend will continue.

     Over the past few  months,  the  decline in  Treasury  bond yields has been
driven more by demand from flight-to-quality investors than by domestic economic
conditions.  Barring any new evidence of global  financial  problems,  we expect
this demand to taper off going forward.

     On the economic front,  domestic growth would have to slow  dramatically to
justify  further bond yield declines.  Even if that happens,  more interest rate
cuts by the Federal Reserve (the Fed lowered short-term rates on October 15, the
second rate cut in less than a month) have already been priced into the market.

     Inflation  is another  key  factor.  Although it has  remained  low,  labor
markets are still fairly tight, and price increases  resulting from rising wages
are still a possibility.

WHAT ARE YOUR PLANS FOR TARGET: 2000 OVER THE NEXT SIX MONTHS?

     Our  mandate is to provide a  portfolio  that  matches  the  behavior  of a
zero-coupon  bond maturing in 2000. To achieve this, we will keep the fund's WAM
date in late 2000, close to the November 15 maturity date of its benchmark.

     We'll also be looking for opportunities to add more REFCORPs to the Target:
2000 portfolio. The yield difference between REFCORPs and STRIPS increased quite
a bit  over  the  last  six  months,  and we now  think  that  REFCORPs  offer a
significant  yield advantage over STRIPS.  At the very least, we plan to hang on
to the REFCORPs already in the portfolio, using STRIPS to meet cash flow needs.

[left margin]

"THE YIELD DIFFERENCE BETWEEN REFCORPS AND STRIPS INCREASED QUITE A BIT OVER THE
LAST SIX MONTHS, AND WE NOW THINK THAT REFCORPS OFFER A SIGNIFICANT YIELD
ADVANTAGE OVER STRIPS."

[pie chart - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

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

As of March 31, 1998
STRIPS             53%
TRs                30%
PHYSICALs           5%
CUBES               5%
Other               7%

Security types are defined on page 53.


8      1-800-345-2021


Target: 2000--Schedule of Investments
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998

Principal Amount                                                         Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. TREASURY SECURITIES(1)
            $      18,144  TBR, 5.83%, 5/15/99                        $  17,630
                   71,250  CUBES, 8.76%, 8/15/99                         68,490
                   75,000  ETR, 5.26%, 11/15/99                          71,225
                   81,000  ETR, 5.63%, 11/15/99                          76,923
               12,000,000  STRIPS--PRINCIPAL, 4.88%,
                              11/15/99                               11,414,151
                  153,000  STRIPS--COUPON, 5.40%,
                              11/15/99                                  145,538
                2,836,700  TBR, 7.83%, 11/15/99                       2,695,399
                   75,000  TR, 5.20%, 11/15/99                           71,280
                  349,800  TR, 5.46%, 11/15/99                          332,449
                  133,000  CATS, 5.22%, 2/15/00                         125,096
                   88,125  CUBES, 8.60%, 2/15/00                         82,877
                4,100,000  STRIPS--COUPON, 4.63%,
                              2/15/00                                 3,860,479
               10,100,000  STRIPS--PRINCIPAL, 5.64%,
                              2/15/00                                 9,502,941
                  306,945  TBR, 8.80%, 2/15/00                          288,626
               29,708,220  TR, 6.69%, 2/15/00                        27,942,651
                   28,146  TR, 8.50%, 2/15/00                            26,473
                  199,843  TR, 8.88%, 2/15/00                           187,966
                  100,000  TR, 9.28%, 2/15/00                            94,057
               12,000,000  REFCORP STRIPS--COUPON,
                              5.54%, 4/15/00                         11,210,252
                  645,525  TBR, 8.62%, 5/15/00                          600,327
                  849,000  TBR, 8.72%, 5/15/00                          789,555
                5,000,000  CUBES, 5.50%, 8/15/00                      4,603,238
               13,633,000  STRIPS--COUPON, 5.71%,
                              8/15/00                                12,571,898
                4,667,000  STRIPS--PRINCIPAL, 7.80%,
                              8/15/00                                 4,303,752
                  894,045  TBR, 8.72%, 8/15/00                          822,950

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

              $15,427,980  TR, 4.89%, 8/15/00                       $14,267,701
               10,442,000  REFCORP STRIPS--COUPON,
                              5.58%, 10/15/00                         9,547,962
               13,391,000  STRIPS--PRINCIPAL, 8.17%,
                              11/15/00                               12,219,652
                  289,250  TBR, 5.63%, 11/15/00                         263,401
                   29,600  TR, 8.49%, 11/15/00                           26,966
                      843  TR, 9.43%, 11/15/00                              768
                   75,000  CATS, 5.34%, 2/15/01                          67,588
                2,700,000  STRIPS--PRINCIPAL, 5.57%,
                              2/15/01                                 2,436,550
                   87,280  TBR, 5.63%, 2/15/01                           78,618
                4,657,000  TIGR, 5.52%, 2/15/01                       4,195,775
                3,933,650  TR, 5.52%, 2/15/01                         3,544,888
                2,052,928  TR, 5.87%, 2/15/01                         1,850,037
                4,435,750  TR, 6.92%, 2/15/01                         3,997,366
               10,000,000  TR, 7.80%, 2/15/01                         9,011,702
                3,200,000  REFCORP STRIPS--COUPON,
                              5.67%, 4/15/01                          2,862,471
                1,400,000  COUGAR, 5.63%, 5/15/01                     1,245,799
                1,496,250  CUBES, 6.21%, 5/15/01                      1,331,448
                   44,000  TIGR, 5.39%, 5/15/01                          39,204
               21,150,000  TR, 7.06%, 5/15/01                        18,849,457
               14,235,000  STRIPS--PRINCIPAL, 7.44%,
                              8/15/01                                12,565,745
                7,060,020  TR, 5.38%, 8/15/01                         6,223,382
                3,215,000  REFCORP STRIPS--COUPON,
                              5.70%, 10/15/01                         2,815,522
               15,000,000  BECC, 5.99%, 11/15/01                     13,076,079
               30,100,000  STRIPS--PRINCIPAL, 4.79%,
                              11/15/01                               26,315,599
                                                                 ---------------
TOTAL INVESTMENT SECURITIES--100.0%                                $238,739,903
                                                                 ===============
   (Cost $230,516,406)

NOTES TO SCHEDULE OF INVESTMENTS

BECC = Book Entry Callable 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 SEPTEMBER 30, 1998

<TABLE>
<CAPTION>
                           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)           11.95%             12.23%            12.91%                --                --                 --
1 YEAR                18.87%             19.35%            21.97%                --                --                 --
- ---------------------------------------------------------------------------------------------------------------------------
AVERAGE ANNUAL RETURNS
3 YEARS               10.65%             11.16%            12.21%                --                --                 --
5 YEARS                8.16%              8.30%             9.18%                --                --                 --
10 YEARS              12.72%             13.01%            11.80%                --                --                 --
LIFE OF FUND          14.79%             16.42%(2)         12.86%(2)            8.15%             8.35%              7.63%
</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  51-53  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 9/30/98
Target: 2005                    $33,126
11/15/05 STRIPS Issue           $33,963
Merrill Lynch Long-Term Index   $30,519

                  Target:          11/15/05        Merrill Lynch
                   2005          STRIPS Issue     Long-Term Index
DATE               VALUE             VALUE             VALUE
9/30/88           $10,000           $10,000           $10,000
9/30/89           $12,353           $12,320           $11,579
9/30/90           $11,977           $12,000           $11,876
9/30/91           $15,168           $15,306           $14,310
9/30/92           $17,780           $17,895           $16,349
9/30/93           $22,384           $22,795           $19,670
9/30/94           $19,530           $19,600           $17,581
9/30/95           $24,443           $24,727           $21,601
9/30/96           $24,971           $25,346           $22,110
9/30/97           $27,868           $28,458           $25,022
9/30/98           $33,126           $33,963           $30,519

$10,000 investment made 9/30/88

The chart 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)    $76.72
Anticipated Value at Maturity
  (Estimated Share Price)         $101.53

          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

2000




2005

The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 53), 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 charts 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
- --------------------------------------------------------------------------------

     An interview with Dave Schroeder  (pictured on page 7), a portfolio manager
on the Target Maturities Trust investment team.

HOW DID THE FUND PERFORM DURING THE PAST YEAR?

     Target:  2005 performed very well,  reflecting the declining  interest rate
environment  (see pages 4-5). For the fiscal year ended  September 30, 1998, the
portfolio's  Investor  Class shares  returned  18.87%,  compared with the 19.35%
return of its benchmark,  a STRIPS issue maturing on November 15, 2005. (See the
Total  Returns   table  on  the  previous   page  for  other  fund   performance
comparisons.)

     It's  important  to note that the fund's  return is  reduced by  management
expenses and transaction costs, while the benchmark's is not.

WHAT CHANGES DID YOU MAKE TO THE PORTFOLIO DURING THE PAST YEAR?

     One of the main challenges we faced was asset growth--Target: 2005's assets
nearly doubled in the last year. Some of that increase can be attributed to fund
performance,  but most of it was new investments.  We put a lot of the new money
to work in STRIPS  because  they're  the most  liquid  (easiest to buy and sell)
zeros.  As a result,  the  fund's  STRIPS  holdings  grew from 41% to 52% of the
portfolio.

     We  also  made a few  adjustments  designed  to  increase  the  portfolio's
anticipated  value at maturity  (AVM),  which grew by 68 cents during the fiscal
year.  The best way to boost the AVM is to seek out higher  yields.  As such, we
maintained  a healthy  position  in  REFCORPs,  which offer  higher  yields than
STRIPS.

     We also  invested  about 10% of the  portfolio in physical  zeros that were
principal  portions of Treasury  bonds. A dealer that was clearing out inventory
sold them to us at yields  that were 20-25 basis  points (a basis  point  equals
0.01%) higher than STRIPS.  A few months ago, we converted  these physical zeros
into BECCs.

WHAT ARE BECCS?

     BECC stands for Book Entry Callable Corpus,  and the securities are derived
from a Treasury  program that converts  physical zeros into wirable  securities.
Today,  virtually all Treasury securities are wirable,  meaning that they can be
traded electronically. But there are still a few zeros out there that are traded
in physical form--actual interest coupons or principal  certificates of Treasury
bonds held by clearing banks.

     Through the Treasury,  however,  it is possible to exchange a physical zero
for a wirable  zero.  Physical  coupon zeros are converted  into CUBES  (Coupons
Under Book Entry Safekeeping), while physical principal zeros are converted into
BECCs.

     We expect our BECCs to  increase  in value  because  they are now easier to
trade--they can be transferred over the Federal Reserve book-entry system,  just
like STRIPS.

DID THE FUND'S ASSET GROWTH HAVE ANY EFFECT ON THE PORTFOLIO'S  WEIGHTED AVERAGE
MATURITY (WAM) DATE?

     In the first half of the fiscal year, our investments caused the fund's WAM
date to extend from  mid-November  to December  2005. We bought  several  STRIPS
issues  maturing in 2006 because they offered  higher yields than  2005-maturity
STRIPS.

[right margin]

"ONE OF THE MAIN CHALLENGES WE FACED WAS ASSET GROWTH--TARGET: 2005'S ASSETS
NEARLY DOUBLED IN THE LAST YEAR."

PORTFOLIO AT A GLANCE
                             9/30/98          9/30/97
NUMBER OF SECURITIES           42                34
ANTICIPATED GROWTH
  RATE                        3.98%             5.57%
WEIGHTED AVERAGE
  MATURITY DATE             11/08/05          11/16/05
ANTICIPATED VALUE AT
  MATURITY (AVM)*            $101.53           $100.85
EXPENSE RATIO (FOR
  INVESTOR CLASS)             0.59%             0.57%

* See graph on page 10.

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.

Investment terms are defined in the Glossary on page 53.


                                                 www.americancentury.com      11


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

     The  portfolio's  WAM date shortened back to early November 2005 during the
last six months. The main reason for this was our investment in BECCs; about 70%
of our BECCs mature in early 2005.

     Despite these  trades,  however,  most of the zeros in the portfolio  still
mature in 2005.  We're  required to keep 90% of fund assets in zeros that mature
between 2004 and 2006; we've kept 100% of the portfolio within this range.

LOOKING AHEAD, WHAT'S YOUR OUTLOOK FOR U.S. INTEREST RATES?

     Interest  rates have come down  dramatically  in the past year,  and that's
meant great returns for U.S. bond investors.  But with rates at 30-year lows, we
think it's becoming more unlikely that this trend will continue.

     Over the past few  months,  the  decline in  Treasury  bond yields has been
driven more by demand from flight-to-quality investors than by domestic economic
conditions.  Barring any new evidence of global  financial  problems,  we expect
this demand to taper off going forward.

     On the economic front,  domestic growth would have to slow  dramatically to
justify  further bond yield declines.  Even if that happens,  more interest rate
cuts by the Federal Reserve (the Fed lowered short-term rates on October 15, the
second rate cut in less than a month) have already been priced into the market.

     Inflation  is another  key  factor.  Although it has  remained  low,  labor
markets are still fairly tight, and price increases  resulting from rising wages
are still a possibility.

WHAT ARE YOUR PLANS FOR TARGET: 2005 OVER THE NEXT SIX MONTHS?

     Our  mandate is to provide a  portfolio  that  matches  the  behavior  of a
zero-coupon  bond maturing in 2005. To achieve this, we will keep the fund's WAM
date in late 2005, close to the November 15 maturity date of its benchmark.

     We'll also be looking for opportunities to add more REFCORPs to the Target:
2005 portfolio. The yield difference between REFCORPs and STRIPS increased quite
a bit  over  the  last  six  months,  and we now  think  that  REFCORPs  offer a
significant  yield advantage over STRIPS.  At the very least, we plan to hang on
to the REFCORPs already in the portfolio, using STRIPS to meet cash flow needs.

[left margin]

"THE YIELD DIFFERENCE BETWEEN REFCORPS AND STRIPS INCREASED QUITE A BIT OVER
THE LAST SIX MONTHS, AND WE NOW THINK THAT REFCORPS OFFER A SIGNIFICANT YIELD
ADVANTAGE OVER STRIPS."

[pie chart - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

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

As of March 31, 1998
STRIPS             56%
REFCORPs           30%
CATS                6%
TRs                 4%
Other               4%

Security types are defined on page 53.


12      1-800-345-2021


Target: 2005--Schedule of Investments
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. TREASURY SECURITIES(1)
$               4,000,000  BECC, 5.64%, 5/15/04                   $  3,102,622
                  258,000  ETR, 5.70%, 5/15/04                         199,680
                  693,750  CUBES, 6.56%, 11/15/04                      526,720
                   87,000  ETR, 5.96%, 11/15/04                         65,777
                   27,000  TIGR, 5.90%, 11/15/04                        20,499
               11,500,000  REFCORP STRIPS--COUPON,
                              5.95%, 1/15/05                         8,650,375
                3,200,000  BECC, 9.00%, 2/15/05                      2,394,911
                4,500,000  STRIPS--COUPON, 6.37%,
                              2/15/05                                3,397,351
                2,000,000  REFCORP STRIPS--COUPON,
                              5.84%, 4/15/05                         1,484,615
               49,000,000  BECC, 5.83%, 5/15/05                     36,187,140
                4,615,672  CUBES, 8.59%, 5/15/05                     3,415,360
                1,000,000  ETR, 6.67%, 5/15/05                         736,604
               28,374,000  STRIPS--COUPON, 6.80%,
                              5/15/05                               21,145,376
               74,059,000  STRIPS--PRINCIPAL, 5.84%,
                              5/15/05                               55,209,440
                  428,750  TBR, 9.37%, 5/15/05                         316,638
                6,450,000  TR, 8.38%, 5/15/05                        4,760,327
               12,500,000  REFCORP STRIPS--COUPON,
                              6.76%, 7/15/05                         9,164,677
                8,000,000  STRIPS--COUPON, 5.50%,
                              8/15/05                                5,890,145
               72,500,000  STRIPS--PRINCIPAL, 6.41%,
                              8/15/05                               53,379,435
               45,270,000  REFCORP STRIPS--COUPON,
                              6.55%, 10/15/05                       32,756,864
               15,900,000  BECC, 7.04%, 11/15/05                    11,444,764

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
$                 170,000  CATS, 6.21%, 11/15/05                    $  122,792
                  491,519  CUBES, 8.86%, 11/15/05                      354,533
                  200,000  LION, 5.73%, 11/15/05                       143,260
                6,500,000  STRIPS--COUPON, 5.60%,
                              11/15/05                               4,724,503
                2,247,000  TBR, 8.45%, 11/15/05                      1,617,383
               46,429,000  REFCORP STRIPS--COUPON,
                              7.45%, 1/15/06                        33,129,271
              168,056,000  STRIPS--COUPON, 6.04%,
                              2/15/06                              120,486,283
               19,415,340  TR, 8.23%, 2/15/06                       13,819,714
               66,800,000  REFCORP STRIPS--COUPON,
                              6.83%, 4/15/06                        47,063,802
                  107,000  CATS, 6.05%, 5/15/06                         75,261
                6,032,000  CATS, 8.83%, 5/15/06                      4,223,828
                2,567,000  CATS, 8.84%, 5/15/06                      1,797,508
                  566,500  CUBES, 6.53%, 5/15/06                       397,868
                4,718,000  STRIPS--COUPON, 7.66%,
                              5/15/06                                3,340,838
                  410,000  TBR, 8.46%, 5/15/06                         287,311
                1,000,000  TR, 8.40%, 5/15/06                          700,237
                  146,346  TR, 8.89%, 5/15/06                          102,859
               36,428,000  REFCORP STRIPS--COUPON,
                              5.69%, 7/15/06                        25,359,513
                4,100,000  STRIPS--COUPON, 5.93%,
                              8/15/06                                2,869,443
                1,299,780  TR, 8.86%, 8/15/06                          902,697
               10,030,000  BECC, 5.55%, 11/15/06                     6,852,950
                                                                 --------------
TOTAL INVESTMENT SECURITIES--100.0%                               $522,621,174
                                                                 ==============
   (Cost $461,237,944)

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 SEPTEMBER 30, 1998

                           INVESTOR CLASS (INCEPTION 3/25/85)
                       TARGET             11/15/10       MERRILL LYNCH
                     MATURITIES           MATURITY         LONG-TERM
                     TRUST: 2010        STRIPS ISSUE     TREASURY INDEX
- --------------------------------------------------------------------------------
6 MONTHS(1) ..........  15.89%             16.53%             12.91%
1 YEAR ...............  26.08%             26.93%             21.97%
- --------------------------------------------------------------------------------
AVERAGE ANNUAL RETURNS
3 YEARS ..............  13.71%             14.39%             12.21%
5 YEARS ..............  10.21%             10.89%              9.18%
10 YEARS .............  14.46%             14.99%             11.80%

(1) Returns for periods less than one year are not  annualized.  See pages 52-53
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 9/30/98
Target: 2010                    $38,593
11/15/10 STRIPS Issue           $40,411
Merrill Lynch Long-Term Index   $30,519

                  Target:          11/15/10        Merrill Lynch
                   2010          STRIPS Issue     Long-Term Index
DATE               VALUE             VALUE             VALUE
9/30/88           $10,000           $10,000           $10,000
9/30/89           $12,821           $13,020           $11,579
9/30/90           $11,943           $12,226           $11,876
9/30/91           $15,616           $15,845           $14,310
9/30/92           $17,765           $17,901           $16,349
9/30/93           $23,736           $24,101           $19,670
9/30/94           $19,720           $19,957           $17,581
9/30/95           $26,239           $26,997           $21,601
9/30/96           $26,444           $27,382           $22,110
9/30/97           $30,609           $31,838           $25,022
9/30/98           $38,593           $40,411           $30,519

$10,000 investment made 9/30/88

The chart 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)    $61.98
Anticipated Value at Maturity
  (Estimated Share Price)         $104.85

          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

2000




2005




2010

The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 53), 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.


14      1-800-345-2021


Target: 2010 --Q&A
- --------------------------------------------------------------------------------

     An interview with Dave Schroeder  (pictured on page 7), a portfolio manager
on the Target Maturities Trust investment team.

HOW DID THE FUND PERFORM DURING THE PAST YEAR?

     Target:  2010 performed very well,  reflecting the declining  interest rate
environment  (see pages 4-5). For the fiscal year ended  September 30, 1998, the
portfolio returned 26.08%,  compared with the 26.93% return of its benchmark,  a
STRIPS issue maturing on November 15, 2010.  (See the Total Returns table on the
previous page for other fund performance comparisons.)

     It's  important  to note that the fund's  return is  reduced by  management
expenses and transaction costs, while the benchmark's is not.

EVEN AFTER EXPENSES, THE FUND'S RETURN STILL LAGGED THE PERFORMANCE OF THE
BENCHMARK. WHY?

     The benchmark is a STRIPS issue,  and STRIPS were the best performers among
zero-coupon Treasury securities.  In contrast,  the fund held as much as half of
its portfolio in non-STRIPS  zeros, such as REFCORPs and ETRs (see the charts on
page 16).

WHAT CHANGES DID YOU MAKE TO THE PORTFOLIO DURING THE PAST YEAR?

     One of the main challenges we faced was asset growth--Target: 2010's assets
increased by 125% in the last year.  Some of that  increase can be attributed to
fund performance, but most of it--more than $100 million--was new investments.

HOW DID YOU INVEST THIS CASH?

     Early on, we put a lot of the new money to work in STRIPS  because  they're
the most liquid (easiest to buy and sell) zeros. As a result,  the fund's STRIPS
holdings grew from 48% to 59% during the first half of the fiscal year.

     But in the last six months,  our purchases focused more on REFCORPs,  which
generally  offer  higher  yields than  STRIPS.  We were able to find a number of
REFCORPs with very attractive yields,  including some bargains from dealers that
were liquidating their inventory.

     By the end of the  fiscal  year,  the  Target:  2010  portfolio  was fairly
balanced between STRIPS and REFCORPs (see the chart on page 16).

THE PORTFOLIO ALSO HAS A SMALL POSITION IN ETRS. WHAT'S THE ATTRACTION OF THESE
SECURITIES?

     ETRs (Easy-growth  Treasury Receipts) are receipt zeros that were issued by
Dean Witter in the early to mid-1980s.  We bought these securities in 1991, when
they  offered  yields that were more than 30 basis  points (a basis point equals
0.01%) higher than STRIPS with the same maturity date.

     Most  Treasury  zeros can be used to  recreate  a whole  Treasury  bond,  a
process  known as  reconstitution.  ETRs cannot be used for  reconstitution,  so
they're not in high demand and they don't trade much. It's unlikely that we'd be
able to find other zeros that offer this kind of yield  advantage,  so we expect
to hold the ETRs until they mature in May 2009.

[right margin]

"TARGET: 2010'S ASSETS INCREASED BY 125% IN THE LAST YEAR. SOME OF THAT INCREASE
CAN BE ATTRIBUTED TO FUND PERFORMANCE, BUT MOST OF IT--MORE THAN $100
MILLION--WAS NEW INVESTMENTS."

PORTFOLIO AT A GLANCE
                             9/30/98           9/30/97
NUMBER OF SECURITIES           18                16
ANTICIPATED GROWTH
  RATE                        4.41%             5.80%
WEIGHTED AVERAGE
  MATURITY DATE             10/16/10          10/03/10
ANTICIPATED VALUE AT
  MATURITY (AVM)*            $104.85           $103.40
EXPENSE RATIO                 0.59%             0.62%

* See graph on page 14.

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.

Investment terms are defined in the Glossary on page 53.


                                                 www.americancentury.com      15


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

DID THE FUND'S ASSET GROWTH HAVE ANY EFFECT ON THE PORTFOLIO'S  WEIGHTED AVERAGE
MATURITY (WAM) DATE?

     The fund's WAM date  extended  from early to  mid-October  2010  during the
fiscal year. Over the past few years,  we've been gradually  moving the WAM date
closer to the maturity date of Target: 2010's benchmark. It's now within a month
of the benchmark's November 15, 2010 maturity date.

     We lengthened the WAM date by increasing our position in STRIPS maturing in
November 2010 and adding several REFCORPs maturing in 2011.

LOOKING AHEAD, WHAT'S YOUR OUTLOOK FOR U.S. INTEREST RATES?

     Interest  rates have come down  dramatically  in the past year,  and that's
meant great returns for U.S. bond investors.  But with rates at 30-year lows, we
think it's becoming more unlikely that this trend will continue.

     Over the past few  months,  the  decline in  Treasury  bond yields has been
driven more by demand from flight-to-quality investors than by domestic economic
conditions.  Barring any new evidence of global  financial  problems,  we expect
this demand to taper off going forward.

     On the economic front,  domestic growth would have to slow  dramatically to
justify  further bond yield declines.  Even if that happens,  more interest rate
cuts by the Federal Reserve (the Fed lowered short-term rates on October 15, the
second rate cut in less than a month) have already been priced into the market.

     Inflation  is another  key  factor.  Although it has  remained  low,  labor
markets are still fairly tight, and price increases  resulting from rising wages
are still a possibility.

WHAT ARE YOUR PLANS FOR TARGET: 2010 OVER THE NEXT SIX MONTHS?

     Our  mandate is to provide a  portfolio  that  matches  the  behavior  of a
zero-coupon bond maturing in 2010. To achieve this, we will continue to move the
fund's WAM date closer to the November 15 maturity date of its benchmark.

     We'll also be looking for opportunities to add more REFCORPs to the Target:
2010 portfolio. The yield difference between REFCORPs and STRIPS increased quite
a bit  over  the  last  six  months,  and we now  think  that  REFCORPs  offer a
significant  yield advantage over STRIPS.  At the very least, we plan to hang on
to the REFCORPs already in the portfolio, using STRIPS to meet cash flow needs.

[left margin]

"THE YIELD DIFFERENCE BETWEEN REFCORPS AND STRIPS INCREASED QUITE A BIT OVER THE
LAST SIX MONTHS, AND WE NOW THINK THAT REFCORPS OFFER A SIGNIFICANT YIELD
ADVANTAGE OVER STRIPS."

[pie chart - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

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

As of March 31, 1998
STRIPS             59%
REFCORPs           33%
ETRs                8%

Security types are defined on page 53.


16      1-800-345-2021


Target: 2010--Schedule of Investments
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. TREASURY SECURITIES (1)
              $28,520,000  ETR, 7.11%, 5/15/09                   $  16,782,267
                2,000,000  REFCORP STRIPS--COUPON,
                              7.98%, 10/15/09                        1,159,537
               11,500,000  STRIPS--PRINCIPAL, 7.18%,
                              11/15/09                               6,668,610
                8,772,000  REFCORP STRIPS--COUPON,
                              7.30%, 1/15/10                         5,004,053
                2,000,000  STRIPS--COUPON, 5.90%,
                              2/15/10                                1,153,934
               43,728,000  REFCORP STRIPS--COUPON,
                              6.85%, 4/15/10                        24,594,965
               34,587,000  STRIPS--COUPON, 5.71%,
                              5/15/10                               19,682,226
               15,000,000  REFCORP STRIPS--COUPON,
                              7.89%, 7/15/10                         8,317,992
               35,277,000  STRIPS--COUPON, 6.26%,
                              8/15/10                               19,798,466

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
              $49,000,000  REFCORP STRIPS--COUPON,
                              6.32%, 10/15/10                    $  26,739,817
               69,839,000  STRIPS--COUPON, 7.00%,
                              11/15/10                              38,584,610
               72,361,000  REFCORP STRIPS--COUPON,
                              5.67%, 1/15/11                        38,878,364
               40,360,000  STRIPS--COUPON, 7.91%,
                              2/15/11                               21,960,501
               18,850,000  REFCORP STRIPS--COUPON,
                              7.84%, 4/15/11                         9,969,972
               24,000,000  STRIPS--COUPON, 5.85%,
                              5/15/11                               12,859,513
               11,715,000  STRIPS--COUPON, 7.23%,
                              8/15/11                                6,176,640
               10,000,000  REFCORP STRIPS--COUPON,
                              5.46%, 10/15/11                        5,120,541
               34,000,000  STRIPS--COUPON, 6.43%,
                              11/15/11                              17,648,195
                                                                 ---------------
TOTAL INVESTMENT SECURITIES--100.0%                               $281,100,203
                                                                 ===============
   (Cost $235,163,514)

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 SEPTEMBER 30, 1998

                           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) ..........  15.79%             15.97%             12.91%
1 YEAR ...............  30.07%             30.68%             21.97%
- --------------------------------------------------------------------------------
AVERAGE ANNUAL RETURNS
3 YEARS ..............  15.68%             16.26%             12.21%
5 YEARS ..............  11.42%             11.94%              9.18%
10 YEARS .............  15.58%             16.04%             11.80%

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

See pages 52-53 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 9/30/98
Target: 2015                    $42,551
11/15/15 STRIPS Issue           $44,246
Merrill Lynch Long-Term Index   $30,519

                  Target:          11/15/15        Merrill Lynch
                   2015          STRIPS Issue     Long-Term Index
DATE               VALUE             VALUE             VALUE
9/30/88           $10,000           $10,000           $10,000
9/30/89           $13,328           $13,442           $11,579
9/30/90           $11,733           $11,808           $11,876
9/30/91           $15,735           $15,895           $14,310
9/30/92           $17,398           $17,569           $16,349
9/30/93           $24,778           $25,173           $19,670
9/30/94           $19,446           $19,741           $17,581
9/30/95           $27,475           $28,160           $21,601
9/30/96           $27,269           $28,144           $22,110
9/30/97           $32,712           $33,859           $25,022
9/30/98           $42,551           $44,246           $30,519

$10,000 investment made 9/30/88

The chart 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)    $49.87
Anticipated Value at Maturity
  (Estimated Share Price)         $112.63

          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

2000




2005




2010




2015


The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 53), 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 7), a portfolio manager
on the Target Maturities Trust investment team.

HOW DID THE FUND PERFORM DURING THE PAST YEAR?

     Target:  2015 performed very well,  reflecting the declining  interest rate
environment  (see pages 4-5). For the fiscal year ended  September 30, 1998, the
portfolio returned 30.07%,  compared with the 30.68% return of its benchmark,  a
STRIPS issue maturing on November 15, 2015.  (See the Total Returns table on the
previous page for other fund performance comparisons.)

     It's  important  to note that the fund's  return is  reduced by  management
expenses and transaction costs, while the benchmark's is not.

WHAT CHANGES DID YOU MAKE TO THE PORTFOLIO DURING THE PAST YEAR?

     We made very few changes to the Target: 2015 portfolio.  We try to keep the
fund  fully  invested  in  zeros at all  times,  so most of the  trades  we made
involved cash flows into the fund.

     During the first six months of the fiscal year, we saw about $25 million in
new investments come into the portfolio.  We put a lot of this new money to work
in STRIPS because  they're the most liquid (easiest to buy and sell) zeros. As a
result, the fund's STRIPS holdings grew from 50% to 56% during the first half of
the fiscal year.

     In the last six months, we made a few adjustments  designed to increase the
portfolio's  anticipated value at maturity (AVM), which grew by $2.11 during the
fiscal year. The best way to boost the AVM is to seek out higher  yields,  so we
sold  some of the  fund's  STRIPS  and  purchased  REFCORPs,  which  offered  an
attractive yield premium over STRIPS.

     By the end of the fiscal  year,  the  Target:  2015  portfolio  was equally
balanced between STRIPS and REFCORPs (see the chart on page 20).

DID THESE TRADES HAVE ANY EFFECT ON THE PORTFOLIO'S  WEIGHTED  AVERAGE  MATURITY
(WAM) DATE?

     Not really (see the table at right). We try to keep the WAM date very close
to the November 15, 2015 maturity  date of the  portfolio's  benchmark.  For the
most part, the WAM date remained within a week of the benchmark's  maturity date
throughout the fiscal year. This  positioning  allowed the fund to closely track
the performance of its benchmark.

LOOKING AHEAD, WHAT'S YOUR OUTLOOK FOR U.S. INTEREST RATES?

     Interest  rates have come down  dramatically  in the past year,  and that's
meant great returns for U.S. bond investors.  But with rates at 30-year lows, we
think it's becoming more unlikely that these spectacular returns will continue.

     Over the past few  months,  the  decline in  Treasury  bond yields has been
driven more by demand from flight-to-quality investors than by domestic economic
conditions.  Barring any new evidence of global  financial  problems,  we expect
this demand to taper off going forward.

     On the economic front,  domestic growth would have to slow  dramatically to
justify further bond yield declines. Even if that happens, more interest rate

[right margin]

"WE MADE VERY FEW CHANGES TO THE TARGET: 2015 PORTFOLIO."

PORTFOLIO AT A GLANCE
                             9/30/98           9/30/97
NUMBER OF SECURITIES           12                11
ANTICIPATED GROWTH
  RATE                        4.81%             5.93%
WEIGHTED AVERAGE
  MATURITY DATE             11/13/15          11/17/15
ANTICIPATED VALUE AT
  MATURITY (AVM)*            $112.63           $110.52
EXPENSE RATIO                 0.59%             0.61%

* See graph on page 18.

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.

Investment terms are defined in the Glossary on page 53.


                                                 www.americancentury.com      19


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

cuts by the Federal Reserve (the Fed lowered short-term rates on October 15, the
second rate cut in less than a month) have already been priced into the market.

     Inflation  is another  key  factor.  Although it has  remained  low,  labor
markets are still fairly tight, and price increases  resulting from rising wages
are still a possibility.

WHAT ARE YOUR PLANS FOR TARGET: 2015 OVER THE NEXT SIX MONTHS?

     Our  mandate is to provide a  portfolio  that  matches  the  behavior  of a
zero-coupon  bond maturing in 2015. To achieve this, we will keep the fund's WAM
date close to the November 15 maturity date of its benchmark.

     We'll also be looking for opportunities to add more REFCORPs to the Target:
2015 portfolio. The yield difference between REFCORPs and STRIPS increased quite
a bit  over  the  last  six  months,  and we now  think  that  REFCORPs  offer a
significant  yield advantage over STRIPS.  At the very least, we plan to hang on
to the REFCORPs already in the portfolio, using STRIPS to meet cash flow needs.

[left margin]

"THE YIELD DIFFERENCE BETWEEN REFCORPS AND STRIPS INCREASED QUITE A BIT OVER
THE LAST SIX MONTHS, AND WE NOW THINK THAT REFCORPS OFFER A SIGNIFICANT YIELD
ADVANTAGE OVER STRIPS."

[pie chart - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

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

As of March 31, 1998
STRIPS             56%
REFCORPs           44%

Security types are defined on page 53.


20      1-800-345-2021


Target: 2015--Schedule of Investments
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. TREASURY SECURITIES(1)
             $  4,350,000  STRIPS--COUPON, 9.22%,
                              2/15/15                           $   1,842,919
               48,640,000  REFCORP STRIPS--COUPON,
                              7.84%, 4/15/15                       19,908,543
               42,408,000  STRIPS--COUPON, 8.91%,
                              5/15/15                              17,675,150
               43,644,000  REFCORP STRIPS--COUPON,
                              7.71%, 7/15/15                       17,581,114
               35,050,000  STRIPS--COUPON, 9.17%,
                              8/15/15                              14,381,902
               52,421,000  REFCORP STRIPS--COUPON,
                              8.21%, 10/15/15                      20,798,007

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
              $59,808,000  STRIPS--COUPON, 8.01%,
                              11/15/15                          $  24,178,591
               36,300,000  STRIPS--COUPON, 8.38%,
                              2/15/16                              14,469,983
               17,700,000  STRIPS--COUPON, 8.39%,
                              5/15/16                               6,944,940
               46,500,000  REFCORP STRIPS--COUPON,
                              7.67%, 7/15/16                       17,621,633
               25,500,000  REFCORP STRIPS--COUPON,
                              8.18%, 10/15/16                       9,490,742
               12,000,000  STRIPS--COUPON, 5.91%,
                              11/15/16                              4,556,865
                                                                ---------------
TOTAL INVESTMENT SECURITIES--100.0%                              $169,450,389
                                                                ===============
   (Cost $109,651,361)

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 SEPTEMBER 30, 1998

                             INVESTOR CLASS (INCEPTION 12/29/89)
                         TARGET                            MERRILL LYNCH
                       MATURITIES            FUND            LONG-TERM
                       TRUST: 2020        BENCHMARK(2)     TREASURY INDEX
- --------------------------------------------------------------------------------
6 MONTHS(1) ............  17.98%            18.52%             12.91%
1 YEAR .................  36.00%            36.91%             21.97%
- --------------------------------------------------------------------------------
AVERAGE ANNUAL RETURNS
3 YEARS ................  18.02%            18.68%             12.21%
5 YEARS ................  12.27%            12.64%              9.18%
LIFE OF FUND ...........  13.71%            13.29%(3)          11.13%(3)

(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  12/31/89,  the date nearest the fund's  inception for which data are
     available.

See pages 52-53 for more information about returns,  the comparative  index, and
the fund's benchmark.

[mountain chart - data below]

GROWTH OF $10,000 OVER LIFE OF FUND

Value on 9/30/98
Target: 2020                    $30,792
Fund Benchmark                  $29,781
Merrill Lynch Long-Term Index   $25,172

                  Target:            Fund          Merrill Lynch
                   2020            Benchmark      Long-Term Index
DATE               VALUE             VALUE             VALUE
12/31/89          $10,000           $10,000           $10,000
3/31/90            $8,658            $8,407            $9,593
6/30/90            $9,258            $8,818           $10,006
9/30/90            $8,025            $7,976            $9,795
12/31/90           $9,550            $9,080           $10,646
3/31/91            $9,717            $9,257           $10,844
6/30/91            $9,208            $8,774           $10,900
9/30/91           $10,450           $10,012           $11,803
12/31/91          $11,208           $10,623           $12,608
3/31/92           $10,592            $9,970           $12,150
6/30/92           $10,842           $10,226           $12,653
9/30/92           $11,359           $10,690           $13,485
12/31/92          $12,143           $11,474           $13,609
3/31/93           $13,360           $12,631           $14,516
6/30/93           $14,693           $13,854           $15,293
9/30/93           $17,269           $16,421           $16,223
12/31/93          $16,469           $15,625           $15,955
3/31/94           $14,511           $13,672           $15,021
6/30/94           $13,378           $12,613           $14,587
9/30/94           $12,735           $11,974           $14,501
12/31/94          $13,561           $12,775           $14,768
3/31/95           $14,769           $13,925           $15,684
6/30/95           $17,935           $17,009           $17,402
9/30/95           $18,726           $17,816           $17,816
12/31/95          $21,876           $20,861           $19,298
3/31/96           $18,243           $17,378           $17,997
6/30/96           $18,135           $17,361           $17,969
9/30/96           $18,334           $17,558           $18,236
12/31/96          $20,034           $19,111           $19,107
3/31/97           $18,425           $17,620           $18,506
6/30/97           $20,268           $19,504           $19,520
9/30/97           $22,643           $21,752           $20,638
12/31/97          $25,768           $24,758           $21,961
3/31/98           $26,100           $25,127           $22,295
6/30/98           $28,342           $27,225           $23,320
9/30/98           $30,792           $29,781           $25,172

$10,000 investment made 12/31/89

The chart at left shows the growth of a $10,000  investment in the fund 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.

* From 12/31/89 (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: 2020
Actual Share Price (Historical)    $36.95
Anticipated Value at Maturity
  (Estimated Share Price)         $106.96

          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

2000




2005




2010




2015




2020

The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 53), 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.


22      1-800-345-2021


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

     An interview with Dave Schroeder  (pictured on page 7), a portfolio manager
on the Target Maturities Trust investment team.

HOW DID THE FUND PERFORM DURING THE PAST YEAR?

     Target:  2020 performed very well,  reflecting the declining  interest rate
environment  (see pages 4-5). For the fiscal year ended  September 30, 1998, the
portfolio returned 36.00%,  compared with the 36.91% return of its benchmark,  a
STRIPS issue maturing on November 15, 2020.  (See the Total Returns table on the
previous page for other fund performance comparisons.)

     It's  important  to note that the fund's  return is  reduced by  management
expenses and transaction costs, while the benchmark's is not.

EVEN AFTER EXPENSES, THE FUND'S RETURN STILL LAGGED THE PERFORMANCE OF THE
BENCHMARK. WHY?

     The benchmark is a STRIPS issue,  and STRIPS were the best performers among
zero-coupon  Treasury securities.  In contrast,  the fund held more than half of
its portfolio in non-STRIPS zeros (see the chart on page 24).

WHAT CHANGES OCCURRED IN THE PORTFOLIO DURING THE PAST YEAR?

     For the  second  straight  fiscal  year,  the main  challenge  we faced was
selling fund  securities to meet  substantial  cash  outflows.  Net  withdrawals
totaled $150 million in Target:  2020 during the fiscal year.  (Fund assets only
declined by about $70 million overall because of strong fund performance.)

     Some of these withdrawals were by shareholders  locking in their gains from
the  last  couple  of  years,  while  others  looking  for  more  interest  rate
sensitivity shifted their investments into our Target: 2025 portfolio.

     We keep the portfolio fully invested in zero-coupon  bonds,  which means we
have  virtually no cash on hand. As a result,  we had to sell some of the fund's
zeros to meet investor  withdrawals.  We sold REFCORPs  early in the fiscal year
because they made up about two-thirds of the portfolio at the time, but we ended
up selling both STRIPS and REFCORPs later in the period.

     Unfortunately,  these sales came with tax  consequences.  Combined with the
exceptional returns of zero-coupon bonds,  security sales are the reason why the
Target:  2020 fund will pay out an unusually large capital gains distribution in
1998.

CAN YOU ELABORATE ON THE SIZE OF THE CAPITAL GAINS  DISTRIBUTION AND HOW IT CAME
ABOUT?

     In December,  Target:  2020  shareholders will receive an estimated taxable
capital gains distribution of approximately $4.75 per share*--equal to about 13%
of the fund's share price on September 30.

     Gains earned by selling  securities in the portfolio must be distributed to
fund  shareholders  each year.  Ordinarily,  we try to minimize  taxable capital
gains by selling our highest-cost  securities  whenever possible.  However,  the
substantial appreciation of the fund's holdings--Target:  2020 returned 67% over
the past 18 months--left us no

* This  amount  is only  an  estimate  and  could  change  prior  to the  actual
  distribution date.

[right margin]

"COMBINED WITH THE EXCEPTIONAL RETURNS OF ZERO-COUPON BONDS, SECURITY SALES ARE
THE REASON WHY THE TARGET: 2020 FUND WILL PAY OUT AN UNUSUALLY LARGE CAPITAL
GAINS DISTRIBUTION IN 1998."

PORTFOLIO AT A GLANCE
                           9/30/98           9/30/97
NUMBER OF SECURITIES         15                15
ANTICIPATED GROWTH
  RATE                      4.90%             5.98%
WEIGHTED AVERAGE
  MATURITY DATE            9/05/20           9/01/20
ANTICIPATED VALUE AT
  MATURITY (AVM)*          $106.96           $104.84
EXPENSE RATIO               0.59%             0.53%

* See graph on page 22.

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.

Investment terms are defined in the Glossary on page 53.


                                                 www.americancentury.com      23


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

way to avoid  booking  sizable  gains  when we sold  securities  to meet  recent
shareholder withdrawals.

     The sheer amount of shareholder  withdrawals  also contributed to the large
upcoming  distribution.  Because some investors sold their shares, there are now
fewer fund shares outstanding.  As a result, the total gains will be distributed
among a smaller number of shares, increasing the per-share amount.

DID THIS SELLING  ACTIVITY HAVE ANY EFFECT ON THE PORTFOLIO'S  WEIGHTED  AVERAGE
MATURITY (WAM) DATE?

     Not really (see the table on page 23). We sold securities with a variety of
maturities in order to keep the portfolio's WAM date fairly steady. The WAM date
is  currently in early  September  2020,  compared  with the  mid-November  2020
maturity date of the fund's benchmark.

     Over  time,  we'll  gradually  move  the  fund's  WAM  date  closer  to the
benchmark's maturity date.

LOOKING AHEAD, WHAT'S YOUR OUTLOOK FOR U.S. INTEREST RATES?

     Interest  rates have come down  dramatically  in the past year,  and that's
meant great returns for U.S. bond investors.  But with rates at 30-year lows, we
think it's becoming more unlikely that these spectacular returns will continue.

     Over the past few  months,  the  decline in  Treasury  bond yields has been
driven more by demand from flight-to-quality investors than by domestic economic
conditions.  Barring any new evidence of global  financial  problems,  we expect
this demand to taper off going forward.

     On the economic front,  domestic growth would have to slow  dramatically to
justify  further bond yield declines.  Even if that happens,  more interest rate
cuts by the Federal Reserve (the Fed lowered short-term rates on October 15, the
second rate cut in less than a month) have already been priced into the market.

     Inflation  is another  key  factor.  Although it has  remained  low,  labor
markets are still fairly tight, and price increases  resulting from rising wages
are still a possibility.

WHAT ARE YOUR PLANS FOR TARGET: 2020 OVER THE NEXT SIX MONTHS?

     Our  mandate is to provide a  portfolio  that  matches  the  behavior  of a
zero-coupon  bond maturing in 2020. To achieve this, we will keep the fund's WAM
date in the latter part of 2020 and eventually move it closer to the November 15
maturity date of its benchmark.

     We'll also be looking for opportunities to add more REFCORPs to the Target:
2020 portfolio. The yield difference between REFCORPs and STRIPS increased quite
a bit  over  the  last  six  months,  and we now  think  that  REFCORPs  offer a
significant yield advantage over STRIPS.

     If cash outflows  continue,  we'll likely sell STRIPS  because they are the
most  liquid  (easiest  to buy and sell)  zeros.  This would also  increase  the
percentage  of  REFCORPs in the  portfolio,  which  would be  beneficial  in the
current environment.

[left margin]

"THE YIELD DIFFERENCE BETWEEN REFCORPS AND STRIPS INCREASED QUITE A BIT OVER THE
LAST SIX MONTHS, AND WE NOW THINK THAT REFCORPS OFFER A SIGNIFICANT YIELD
ADVANTAGE OVER STRIPS."

[pie chart - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

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

As of March 31, 1998
REFCORPs          55%
STRIPS            45%

Security types are defined on page 53.


24      1-800-345-2021


Target: 2020--Schedule of Investments
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998

Principal Amount                                                     Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. TREASURY SECURITIES(1)
$              59,274,000  REFCORP STRIPS--COUPON,
                              8.44%, 1/15/20                    $  18,328,114
              216,000,000  STRIPS--COUPON, 8.02%,
                              2/15/20                              68,590,800
               14,344,000  REFCORP STRIPS--COUPON,
                              8.28%, 4/15/20                        4,374,633
               63,500,000  STRIPS--COUPON, 8.39%,
                              5/15/20                              19,895,820
               45,656,000  REFCORP STRIPS--COUPON,
                              8.18%, 7/15/20                       13,719,171
              240,231,000  REFCORP STRIPS--PRINCIPAL,
                              8.41%, 7/15/20                       72,187,013
              138,135,000  STRIPS--COUPON, 7.85%,
                              8/15/20                              42,657,469
                8,678,000  REFCORP STRIPS--COUPON,
                              7.19%, 10/15/20                       2,569,122

Principal Amount                                                     Value
- --------------------------------------------------------------------------------
$             205,000,000  REFCORP STRIPS--PRINCIPAL,
                              7.50%, 10/15/20                   $  60,690,250
              174,407,000  STRIPS--COUPON, 7.74%,
                              11/15/20                             53,082,515
               20,482,000  REFCORP STRIPS--COUPON,
                              8.41%, 1/15/21                        6,006,551
              294,945,000  REFCORP STRIPS--PRINCIPAL,
                              7.32%, 1/15/21                       86,495,571
               88,250,000  STRIPS--COUPON, 7.19%,
                              2/15/21                              26,617,083
               25,500,000  STRIPS--COUPON, 7.26%,
                              5/15/21                               7,588,800
               14,500,000  STRIPS--COUPON, 7.40%,
                              11/15/21                              4,210,655
                                                                ---------------
TOTAL INVESTMENT SECURITIES--100.0%                              $487,013,567
                                                                ===============
   (Cost $301,124,307)

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      25


Target: 2025 --Performance
- --------------------------------------------------------------------------------
TOTAL RETURNS AS OF SEPTEMBER 30, 1998

<TABLE>
<CAPTION>
                           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) ..........  22.09%         22.19%            12.91%                 --                --                 --
1 YEAR ...............  42.21%         43.68%            21.97%                 --                --                 --
- ----------------------------------------------------------------------------------------------------------------------------
AVERAGE ANNUAL RETURNS
LIFE OF FUND .........  19.50%         16.97%            11.28%               16.02%            16.91%             10.03%
</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.

See  pages  51-53  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 9/30/98
Target: 2025                    $15,955
Fund Benchmark                  $15,444
Merrill Lynch Long-Term Index   $13,239

                  Target:           Fund          Merrill Lynch
                   2025          Benchmark       Long-Term Index
DATE              VALUE             VALUE             VALUE
2/15/96          $10,000          $10,000           $10,000
2/29/96           $9,542           $9,307            $9,650
3/31/96           $9,124           $8,965            $9,466
4/30/96           $8,756           $8,353            $9,308
5/31/96           $8,746           $8,403            $9,263
6/30/96           $8,983           $8,713            $9,451
7/31/96           $8,968           $8,644            $9,451
8/31/96           $8,529           $8,197            $9,336
9/30/96           $9,023           $8,695            $9,591
10/31/96          $9,799           $9,455            $9,965
11/30/96         $10,540          $10,104           $10,293
12/31/96          $9,890           $9,455           $10,049
1/31/97           $9,492           $9,047            $9,984
2/28/97           $9,427           $8,946            $9,970
3/31/97           $8,883           $8,449            $9,733
4/30/97           $9,392           $8,853            $9,970
5/31/97           $9,558           $9,002           $10,077
6/30/97           $9,966           $9,431           $10,267
7/31/97          $11,463          $10,864           $10,861
8/31/97          $10,561           $9,989           $10,558
9/30/97          $11,221          $10,572           $10,855
10/31/97         $12,016          $11,369           $11,212
11/30/97         $12,419          $11,834           $11,359
12/31/97         $12,867          $12,218           $11,551
1/31/98          $13,246          $12,615           $11,779
2/28/98          $13,009          $12,335           $11,697
3/31/98          $13,068          $12,431           $11,726
4/30/98          $13,008          $12,392           $11,760
5/31/98          $13,627          $12,894           $11,988
6/30/98          $14,393          $13,628           $12,265
7/31/98          $14,101          $13,406           $12,215
8/31/98          $15,360          $14,778           $12,771
9/30/98          $15,955          $15,444           $13,239

$10,000 investment made 12/15/96

The chart at left shows the growth of a $10,000  investment in the fund 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 do not.

[line chart - data below]

SHARE PRICE VS. ANTICIPATED VALUE AT MATURITY

TARGET: 2025
Actual Share Price (Historical)    $31.67
Anticipated Value at Maturity
  (Estimated Share Price)         $112.23

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

2000




2005




2010




2015




2020




2025

The top line in the graph  represents the fund's  Anticipated  Value at Maturity
(AVM--defined  on page 53), 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 charts 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 7), a portfolio manager
on the Target Maturities Trust investment team.

HOW DID THE FUND PERFORM DURING THE PAST YEAR?

     Target:  2025 performed very well,  reflecting the declining  interest rate
environment  (see pages 4-5). For the fiscal year ended  September 30, 1998, the
portfolio's  Investor  Class shares  returned  42.21%,  compared with the 43.68%
return of its benchmark.*  (See the Total Returns table on the previous page for
other fund performance comparisons.)

     It's  important  to note that the fund's  return is  reduced by  management
expenses and transaction costs, while the benchmark's is not.

EVEN AFTER EXPENSES, THE FUND'S RETURN STILL LAGGED THE PERFORMANCE OF THE
BENCHMARK. WHY?

     The benchmark is a STRIPS issue,  and STRIPS were the best performers among
zero-coupon Treasury securities.  For example,  STRIPS maturing in November 2025
returned 43%,  compared to the 41% return of REFCORPs  maturing in October 2025.
The fund owned a healthy position in REFCORPs throughout the fiscal year.

WHAT CHANGES DID YOU MAKE TO THE PORTFOLIO DURING THE PAST YEAR?

     One of the main  challenges we faced was asset  growth--Target:  2025's net
assets increased from $74 million to $356 million in the last year. Some of that
increase can be attributed to fund  performance,  but most of it--more than $200
million--was new investments.

     We put a lot of the new money to work in STRIPS  because  they're  the most
liquid  (easiest to buy and sell) zeros,  and because STRIPS make up most of the
supply  available  in this  maturity  sector.  As a result,  the  fund's  STRIPS
holdings grew from 37% to 67% during the fiscal year.

DID THE FUND'S ASSET GROWTH HAVE ANY EFFECT ON THE PORTFOLIO'S  WEIGHTED AVERAGE
MATURITY (WAM) DATE?

     The fund's WAM date  shortened  from  mid-July  to late May 2025 during the
fiscal year.  The reason we've kept the WAM date shorter than the November  2025
maturity  date of the fund's  benchmark  is because  yields and returns on zeros
maturing in 2024 and early 2025 are higher than those  maturing in late 2025 and
2026.  This is because the  zero-coupon  yield curve  "peaks"  around 2020,  and
yields  get lower for zeros that  mature  later than that (see the chart on page
4).

     So, for now,  the Target:  2025  portfolio  earns a little  extra yield and
return for having a WAM date in early 2025 rather than later in the target year.
Over time,  the fund's WAM date will pass the "peak" portion of the yield curve;
at that point,  we'll look to extend the fund's WAM date closer to the  maturity
date of the benchmark.

* Originally,  the fund's  benchmark  was a STRIPS issue  maturing on August 15,
2025. However,  beginning in January 1998, the fund's benchmark was changed to a
STRIPS issue maturing on November 15, 2025.

[right margin]

"TARGET:  2025'S NET ASSETS  INCREASED  FROM $74 MILLION TO $356  MILLION IN THE
LAST YEAR. SOME OF THAT INCREASE CAN BE ATTRIBUTED TO FUND PERFORMANCE, BUT MOST
OF IT--MORE THAN $200 MILLION--WAS NEW INVESTMENTS."

PORTFOLIO AT A GLANCE
                            9/30/98           9/30/97
NUMBER OF SECURITIES          20                14
ANTICIPATED GROWTH
  RATE                       4.80%             5.86%
WEIGHTED AVERAGE
  MATURITY DATE             5/30/25           7/10/25
ANTICIPATED VALUE AT
  MATURITY (AVM)*           $112.23           $110.88
EXPENSE RATIO (FOR
  INVESTOR CLASS)            0.59%             0.62%

* See graph on page 26.

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.

Investment terms are defined in the Glossary on page 53.


                                                 www.americancentury.com      27


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

WERE THERE ANY OTHER WAYS YOU TRIED TO ENHANCE PERFORMANCE?

     One strategy we've used to boost returns is securities lending. At the long
end of the maturity spectrum, the supply of zeros is somewhat limited, resulting
in a scarcity of certain  issues.  As one of the major investors in this area of
the  market,  the fund is an  attractive  source for  dealers who need to borrow
securities to cover sales.

     Although the lending market has been less active this year than in the past
couple of years,  we've done a few lending deals in 1998,  one of which is still
going.  Fees from these  loans have been a nice  addition  to the fund's  bottom
line.

LOOKING AHEAD, WHAT'S YOUR OUTLOOK FOR U.S. INTEREST RATES?

     Interest  rates have come down  dramatically  in the past year,  and that's
meant great returns for U.S. bond investors.  But with rates at 30-year lows, we
think it's becoming more unlikely that these spectacular returns will continue.

     Over the past few  months,  the  decline in  Treasury  bond yields has been
driven more by demand from flight-to-quality investors than by domestic economic
conditions.  Barring any new evidence of global  financial  problems,  we expect
this demand to taper off going forward.

     On the economic front,  domestic growth would have to slow  dramatically to
justify  further bond yield declines.  Even if that happens,  more interest rate
cuts by the Federal Reserve (the Fed lowered short-term rates on October 15, the
second rate cut in less than a month) have already been priced into the market.

     Inflation  is another  key  factor.  Although it has  remained  low,  labor
markets are still fairly tight, and price increases  resulting from rising wages
are still a possibility.

WHAT ARE YOUR PLANS FOR TARGET: 2025 OVER THE NEXT SIX MONTHS?

     Our  mandate is to provide a  portfolio  that  matches  the  behavior  of a
zero-coupon  bond maturing in 2025. To achieve this, we will keep the fund's WAM
date within the target year.  We're more likely to favor zeros  maturing in 2024
and early 2025 because of their higher yields, so we would expect the fund's WAM
date to remain in the second quarter of 2025.

     We'll also be looking for opportunities to add more REFCORPs to the Target:
2025 portfolio. The yield difference between REFCORPs and STRIPS increased quite
a bit over the last six months,  especially  in this part of the market,  and we
now think that REFCORPs offer a significant yield advantage over STRIPS.

     Unfortunately,  there haven't been many REFCORPs available in this maturity
sector.  At the very least,  we plan to hang on to the  REFCORPs  already in the
portfolio, using STRIPS to meet any cash outflows.

[left margin]

"THE YIELD DIFFERENCE BETWEEN REFCORPS AND STRIPS INCREASED QUITE A BIT OVER THE
LAST SIX MONTHS, AND WE NOW THINK THAT REFCORPS OFFER A SIGNIFICANT YIELD
ADVANTAGE OVER STRIPS."

[pie chart - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

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

As of March 31, 1998
STRIPS             57%
REFCORPs           43%

Security types are defined on page 53.


28       1-800-345-2021


Target: 2025--Schedule of Investments
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998

Principal Amount                                                     Value
- --------------------------------------------------------------------------------
ZERO-COUPON U.S. TREASURY SECURITIES(1)
$              10,000,000  REFCORP STRIPS--COUPON,
                              6.19%, 1/15/24                    $  2,494,700
               12,000,000  REFCORP STRIPS--COUPON,
                              6.50%, 4/15/24                       2,957,400
                3,926,000  REFCORP STRIPS--COUPON,
                              7.10%, 7/15/24                         955,903
               72,083,000  REFCORP STRIPS--COUPON,
                              6.83%, 10/15/24                     17,338,124
               68,000,000  STRIPS--COUPON, 5.99%,
                              11/15/24                            16,977,560
               17,500,000  STRIPS--PRINCIPAL, 7.26%,
                              11/15/24                             4,384,975
               41,645,000  REFCORP STRIPS--COUPON,
                              6.93%, 1/15/25                       9,894,852
              313,900,000  STRIPS--COUPON, 6.06%,
                              2/15/25                             77,495,632
              257,300,000  STRIPS--PRINCIPAL, 6.37%,
                              2/15/25                             63,779,524
               38,399,000  REFCORP STRIPS--COUPON,
                              6.68%, 4/15/25                       9,011,094

Principal Amount                                                     Value
- --------------------------------------------------------------------------------
$               5,000,000  STRIPS--COUPON, 5.58%,
                              5/15/25                           $  1,214,950
               14,500,000  REFCORP STRIPS--COUPON,
                              6.55%, 7/15/25                       3,360,955
               56,000,000  STRIPS--COUPON, 5.87%,
                              8/15/25                             13,498,800
              245,600,000  STRIPS--PRINCIPAL, 5.72%,
                              8/15/25                             59,459,760
               95,167,000  REFCORP STRIPS--COUPON,
                              6.79%, 10/15/25                     21,786,581
               10,000,000  STRIPS--COUPON, 5.94%,
                              11/15/25                             2,375,600
               45,000,000  REFCORP STRIPS--COUPON,
                              6.81%, 1/15/26                      10,169,100
               53,000,000  REFCORP STRIPS--COUPON,
                              6.51%, 4/15/26                      11,822,710
               36,000,000  REFCORP STRIPS--COUPON,
                              7.29%, 7/15/26                       7,927,200
               81,249,000  REFCORP STRIPS--COUPON,
                              6.98%, 10/15/26                     17,662,720
                                                                --------------
TOTAL INVESTMENT SECURITIES--100.0%                             $354,568,140
                                                                ==============
(Cost $284,665,108)

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


Statements of Assets and Liabilities
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
SEPTEMBER 30, 1998                         2000             2005             2010

ASSETS
<S>                                   <C>              <C>              <C>         
Investment securities, at value
  (identified cost of $230,516,406,
  $461,237,944 and  $235,163,514,
  respectively) (Note 3) ........     $238,739,903     $522,621,174     $281,100,203
Cash ............................          159,027       10,447,582        3,159,739
Investment in affiliated money
  market fund (Note 2) ..........          425,457        2,120,357        2,654,878
Securities lending fee 
  receivable ....................               --               --               --
                                      ------------     ------------     ------------
                                       239,324,387      535,189,113      286,914,820
                                      ------------     ------------     ------------
LIABILITIES
Disbursements in excess of
  demand deposit cash ...........          454,242          199,257           65,323
Payable for capital shares
  redeemed ......................        1,166,677          661,192        2,887,681
Accrued management fee
  (Note 2) ......................          113,532          238,970          130,268
Distribution and service fees
  payable (Note 2) ..............               26               43             --
Payable for trustees' fees
  and expenses ..................              700              937              734
Accrued expenses and
  other liabilities .............              712            2,604            2,470
                                      ------------     ------------     ------------
                                         1,735,889        1,103,003        3,086,476
                                      ------------     ------------     ------------
Net Assets ......................     $237,588,498     $534,086,110     $283,828,344
                                      ============     ============     ============
NET ASSETS CONSIST OF:
Capital paid in .................     $216,542,478     $450,677,378     $227,800,198
Undistributed net investment
  income ........................       10,075,324       16,898,403        8,023,524
Accumulated undistributed
  net realized gain on
  investment transactions .......        2,747,199        5,127,099        2,067,933
Net unrealized appreciation
  on investments (Note 3) .......        8,223,497       61,383,230       45,936,689
                                      ------------     ------------     ------------
                                      $237,588,498     $534,086,110     $283,828,344
                                      ============     ============     ============
Investor Class
Net assets ......................     $237,524,926     $533,985,959     $283,828,344
Shares outstanding ..............        2,532,712        6,960,333        4,579,373
Net asset value per share .......     $      93.78     $      76.72     $      61.98

Advisor Class
Net assets ......................     $     63,572     $    100,151              N/A
Shares outstanding ..............              678            1,306              N/A
Net asset value per share .......     $      93.76     $      76.69              N/A
</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 out 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 breakout 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


Statements of Assets and Liabilities
- --------------------------------------------------------------------------------
                                                                    (Continued)

<TABLE>
<CAPTION>
SEPTEMBER 30, 1998                           2015             2020              2025

ASSETS
<S>                                           <C>            <C>              <C>      
Investment securities, at value
  (identified cost of $109,651,361,
  $301,124,307 and  $284,665,108,
  respectively) (Note 3) ...........     $169,450,389     $487,013,567     $354,568,140
Cash ...............................          162,363        1,834,933        2,655,622
Investment in affiliated money
  market fund (Note 2) .............        1,150,251          516,423        1,856,383
Securities lending fee receivable ..             --               --             14,607
                                         ------------     ------------     ------------
                                          170,763,003      489,364,923      359,094,752
                                         ------------     ------------     ------------
LIABILITIES
Disbursements in excess of
  demand deposit cash ..............          106,334        2,074,038           68,525
Payable for capital shares
  redeemed .........................          490,743          990,285        2,640,015
Accrued management fee
  (Note 2) .........................           81,673          243,146          168,986
Distribution and service fees
  payable (Note 2) .................             --               --                 27
Payable for trustees' fees
  and expenses .....................              640              899              791
Accrued expenses and
  other liabilities ................            2,366            4,784            4,860
                                         ------------     ------------     ------------
                                              681,756        3,313,152        2,883,204
                                         ------------     ------------     ------------
Net Assets .........................     $170,081,247     $486,051,771     $356,211,548
                                         ============     ============     ============
NET ASSETS CONSIST OF:
Capital paid in ....................     $104,510,486     $228,403,297     $276,368,990
Undistributed net investment
  income ...........................        5,500,951       19,544,059        8,762,384
Accumulated undistributed
  net realized gain on
  investment transactions ..........          270,782       52,215,155        1,177,142
Net unrealized appreciation
  on investments (Note 3) ..........       59,799,028      185,889,260       69,903,032
                                         ------------     ------------     ------------
                                         $170,081,247     $486,051,771     $356,211,548
                                         ============     ============     ============
Investor Class
Net assets .........................     $170,081,247     $486,051,771     $356,122,436
Shares outstanding .................        3,410,207       13,152,689       11,245,819
Net asset value per share ..........     $      49.87     $      36.95     $      31.67


Advisor Class
Net assets .........................              N/A              N/A     $     89,112
Shares outstanding .................              N/A              N/A            2,816
Net asset value per share ..........              N/A              N/A     $      31.64
</TABLE>

See Notes to Financial Statements


                                                 www.americancentury.com      31


Statements of Operations
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
YEAR ENDED SEPTEMBER 30, 1998               2000           2005             2010
INVESTMENT INCOME

Income:
<S>                                     <C>             <C>             <C>        
Interest ..........................     $15,205,216     $23,436,080     $11,127,377
Income from securities lending ....            --              --              --
                                        -----------     -----------     -----------
                                         15,205,216      23,436,080      11,127,377
                                        -----------     -----------     -----------

Expenses (Note 2):
Management fees ...................       1,410,866       2,246,858       1,092,458
Distribution fees--Advisor Class ..              18              37            --
Service fees--Advisor Class .......              18              37            --
Trustees' fees and expenses .......           9,648          11,340           8,722
                                        -----------     -----------     -----------
                                          1,420,550       2,258,272       1,101,180
                                        -----------     -----------     -----------

Net investment income .............      13,784,666      21,177,808      10,026,197
                                        -----------     -----------     -----------
REALIZED AND UNREALIZED
GAIN ON INVESTMENTS (NOTE 3)
Net realized gain on investments ..       6,149,330       5,444,663       2,154,470
Change in net unrealized
  appreciation on investments .....         679,135      42,618,545      34,621,133
                                        -----------     -----------     -----------
Net realized and unrealized
  gain on investments .............       6,828,465      48,063,208      36,775,603
                                        -----------     -----------     -----------
Net Increase in Net Assets
  Resulting from Operations .......     $20,613,131     $69,241,016     $46,801,800
                                        ===========     ===========     ===========
</TABLE>

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF  OPERATIONS--This  statement breaks out 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


Statements of Operations
- --------------------------------------------------------------------------------
                                                                    (Continued)

<TABLE>
<CAPTION>
YEAR ENDED SEPTEMBER 30, 1998                   2015             2020             2025
INVESTMENT INCOME

Income:
<S>                                        <C>              <C>              <C>         
Interest .............................     $  7,985,961     $ 30,415,786     $  1,622,041
Income from securities lending .......             --            105,570           66,911
                                           ------------     ------------     ------------
                                              7,985,961       30,521,356       11,688,952
                                           ------------     ------------     ------------
Expenses (Note 2):
Management fees ......................          845,121        3,309,715        1,240,147
Distribution fees - Advisor Class ....             --               --                 91
Service fees - Advisor Class .........             --               --                 91
Trustees' fees and expenses ..........            8,159           14,769            9,208
                                           ------------     ------------     ------------
                                                853,280        3,324,484        1,249,537
                                           ------------     ------------     ------------

Net investment income ................        7,132,681       27,196,872       10,439,415
                                           ------------     ------------     ------------
REALIZED AND UNREALIZED
GAIN ON INVESTMENTS (NOTE 3)
Net realized gain on investments .....          298,681       55,277,618        1,681,458
Change in net unrealized
  appreciation on investments ........       29,541,335       86,449,383       60,753,235
                                           ------------     ------------     ------------
Net realized and unrealized
gain on investments ..................       29,840,016      141,727,001       62,434,693
                                           ------------     ------------     ------------
Net Increase in Net Assets
  Resulting from Operations ..........     $ 36,972,697     $168,923,873     $ 72,874,108
                                           ============     ============     ============
</TABLE>

See Notes to Financial Statements


                                                 www.americancentury.com      33


Statements of Changes in Net Assets
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30, 1998 AND SEPTEMBER 30, 1997 

                                                 2000                             2005                           2010

Increase (Decrease) in Net               1998             1997            1998            1997           1998             1997
Assets                    

OPERATIONS
<S>                                 <C>             <C>             <C>             <C>             <C>             <C>          
Net investment income ..............$  13,784,666   $  16,169,545   $  21,177,808   $  15,451,023   $  10,026,197   $   6,845,706
Net realized gain on investments ...    6,149,330       1,190,560       5,444,663       1,348,958       2,154,470       1,066,854
Change in net unrealized
  appreciation (depreciation)
  on investments ...................      679,135       2,108,565      42,618,545      11,653,361      34,621,133       9,112,041
                                    -------------   -------------   -------------   -------------   -------------   -------------
Net increase in net assets
  resulting from operations ........   20,613,131      19,468,670      69,241,016      28,453,342      46,801,800      17,024,601
                                    -------------   -------------   -------------   -------------   -------------   -------------
DISTRIBUTIONS TO
SHAREHOLDERS
From net investment income:
  Investor Class ...................  (15,765,056)    (17,081,069)    (15,987,498)    (14,549,884)     (7,102,391)     (6,941,406)
From net realized gains on
  investment transactions:
  Investor Class ...................         --              --        (1,217,264)     (1,764,760)       (850,424)     (2,886,953)
                                    -------------   -------------   -------------   -------------   -------------   -------------
Decrease in net assets from
  distributions to shareholders ....  (15,765,056)    (17,081,069)    (17,204,762)    (16,314,644)     (7,952,815)     (9,828,359)
                                    -------------   -------------   -------------   -------------   -------------   -------------
CAPITAL SHARE
TRANSACTIONS (NOTE 4)
Net increase (decrease) in net
  assets from capital share
  transactions .....................  (15,636,711)    (21,767,055)    200,372,715      30,674,515     120,167,530       6,498,396
                                    -------------   -------------   -------------   -------------   -------------   -------------
Net increase (decrease) in
  net assets .......................  (10,788,636)    (19,379,454)    252,408,969      42,813,213     159,016,515      13,694,638
NET ASSETS
Beginning of year ..................  248,377,134     267,756,588     281,677,141     238,863,928     124,811,829     111,117,191
                                    -------------   -------------   -------------   -------------   -------------   -------------
End of year ........................$ 237,588,498   $ 248,377,134   $ 534,086,110   $ 281,677,141   $ 283,828,344   $ 124,811,829
                                    =============   =============   =============   =============   =============   =============
Undistributed net investment
  income ...........................$  10,075,324   $  12,055,714   $  16,898,403   $  11,708,093   $   8,023,524   $   5,099,718
                                    =============   =============   =============   =============   =============   =============
</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


Statements of Changes in Net Assets
- --------------------------------------------------------------------------------
                                                                    (Continued)

<TABLE>
<CAPTION>
YEARS ENDED SEPTEMBER 30, 1998 AND SEPTEMBER 30, 1997 

Increase (Decrease) in Net                        2015                            2020                             2025        
Assets                                   1998              1997           1998            1997            1998             1997
                                        
OPERATIONS
<S>                                 <C>             <C>             <C>             <C>             <C>             <C>         
Net investment income ..............$   7,132,681   $   6,594,789   $  27,196,872   $  51,768,641   $  10,439,415   $  3,478,019
Net realized gain on investments ...      298,681       4,715,347      55,277,618      45,078,260       1,681,458        302,702
Change in net unrealized
  appreciation (depreciation)
  on investments ...................   29,541,335      10,243,018      86,449,383      85,510,156      60,753,235      9,831,539
                                    -------------   -------------   -------------   -------------   -------------   ------------
Net increase in net assets
  resulting from operations ........   36,972,697      21,553,154     168,923,873     182,357,057      72,874,108     13,612,260
                                    -------------   -------------   -------------   -------------   -------------   ------------
DISTRIBUTIONS TO
SHAREHOLDERS
From net investment income:
   Investor Class ..................   (6,501,208)     (6,897,189)    (44,888,306)    (54,220,221)     (4,549,154)    (1,603,280)
From net realized gains on
  investment transactions:
  Investor Class ...................   (4,326,524)     (1,134,946)    (41,866,720)           (831)       (305,669)          --
                                    -------------   -------------   -------------   -------------   -------------   ------------
Decrease in net assets from
  distributions to shareholders ....  (10,827,732)     (8,032,135)    (86,755,026)    (54,221,052)     (4,854,823)    (1,603,280)
                                    -------------   -------------   -------------   -------------   -------------   ------------
CAPITAL SHARE
TRANSACTIONS (NOTE 4)
Net increase (decrease) in net
  assets from capital share
  transactions .....................   29,036,713     (14,275,275)   (149,668,103)   (500,904,188)    214,370,948     26,151,733
                                    -------------   -------------   -------------   -------------   -------------   ------------
Net increase (decrease) in
  net assets .......................   55,181,678        (754,256)    (67,499,256)   (372,768,183)    282,390,233     38,160,713
NET ASSETS
Beginning of year ..................  114,899,569     115,653,825     553,551,027     926,319,210      73,821,315     35,660,602
                                    -------------   -------------   -------------   -------------   -------------   ------------
End of year ........................$ 170,081,247   $ 114,899,569   $ 486,051,771   $ 553,551,027   $ 356,211,548   $ 73,821,315
                                    =============   =============   =============   =============   =============   ============
Undistributed net investment
  income ...........................$   5,500,951   $   4,945,063   $  19,544,059   $  37,235,493   $   8,762,384   $  2,872,123
                                    =============   =============   =============   =============   =============   ============
</TABLE>

See Notes to Financial Statements


                                                 www.americancentury.com      35


Notes to Financial Statements
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998

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:
American Century - Benham Target Maturities Trust: 2000 (2000), American Century
- - Benham Target Maturities Trust: 2005 (2005),  American Century - Benham Target
Maturities  Trust:  2010 (2010),  American  Century - Benham  Target  Maturities
Trust:  2015 (2015),  American Century - Benham Target  Maturities  Trust:  2020
(2020),  and American Century - Benham Target  Maturities Trust: 2025 (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
2000,  2005, and 2025 commenced on August 20, 1998,  August 3, 1998, and June 1,
1998,  respectively.  Sale of the Advisor Class for 2010, 2015, and 2020 had not
commenced as of the report date. The following  significant  accounting policies
are in accordance with generally accepted accounting principles.

     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 capital 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  splits,  a  shareholder  reinvesting  dividends  and
capital  gain  distributions  will hold  exactly the same number of shares owned
prior to the  distributions  and share  adjustment.  A  shareholder  electing to
receive dividends in cash will own fewer shares.

     USE OF  ESTIMATES--The  preparation  of financial  statements in conformity
with  generally  accepted  accounting  principles  requires  management  to make
estimates and assumptions.  These estimates and assumptions  affect the reported
amounts  of assets and  liabilities  and  disclosure  of  contingent  assets and
liabilities at the date of the financial  statements and the reported amounts of
increases and decreases in net assets from operations during the period.  Actual
results could differ from these estimates.

     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)
SEPTEMBER 30, 1998
- --------------------------------------------------------------------------------
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 annual rate at which
this fee is assessed is determined  monthly in a two-step process:  First, a fee
rate  schedule  is  applied  to the net assets of all of the funds in the Fund's
investment  category which are managed by ACIM (the "Investment  Category Fee").
The  overall  investment  objective  of  each  Fund  determines  its  Investment
Category.  The three investment  categories are: the Money Market Fund Category,
the Bond Fund Category and the Equity Fund  Category.  The Funds are included in
the Bond Fund Category.  Second,  a separate fee rate schedule is applied to the
net  assets  of all of the  funds  managed  by ACIM  (the  "Complex  Fee").  The
Investment  Category  Fee and the  Complex Fee are then added to  determine  the
unified  management  fee rate.  The  management fee is paid monthly by each Fund
based on each Fund's  aggregate  average  daily net assets  during the  previous
month multiplied by the monthly management fee rate.

     The  annualized  Investment  Category  Fee  schedule  for  each  Fund is as
follows:

     0.3600% of the first $1 billion 
     0.3080% of the next $1 billion 
     0.2780% of the next $3 billion 
     0.2580% of the next $5 billion 
     0.2450% of the next $15 billion 
     0.2430% of the next $25 billion
     0.2425% of the average daily net assets over $50 billion

     The annualized Complex Fee schedule (Investor Class) is as follows:

     0.3100% of the first $2.5 billion 
     0.3000% of the next $7.5 billion
     0.2985% of the next $15 billion 
     0.2970% of the next $25 billion 
     0.2960% of the next $50 billion 
     0.2950% of the next $100 billion 
     0.2940% of the next $100 billion 
     0.2930% of the next $200 billion 
     0.2920% of the next $250 billion 
     0.2910% of the next $500 billion
     0.2900% of the average daily net assets over $1,250 billion

     The Complex Fee schedule for the Advisor  Class is lower by 0.2500% at each
graduated  step.  For example,  if the Investor Class Complex Fee is 0.3100% for
the first $2.5 billion,  the Advisor Class Complex Fee is 0.0600% (0.3100% minus
0.2500%) for the first $2.5 billion.

     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  September 30, 1998 were $36, $74, and $182
for 2000, 2005, 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 September  30, 1998,  2000,  2005,  2010,  2015,  2020,  and 2025 had
invested $425,457, $2,120,357, $2,654,878, $1,150,251, $516,423, and $1,856,383,
respectively,  in shares of  Capital  Preservation  Fund  (CPF).  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.


                                                 www.americancentury.com      37


Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)
SEPTEMBER 30, 1998
- --------------------------------------------------------------------------------
3. INVESTMENT TRANSACTIONS

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

<TABLE>
                          2000             2005             2010             2015            2020             2025

<S>                   <C>              <C>              <C>               <C>             <C>              <C>         
Purchases ............$198,352,259     $307,918,576     $173,344,006      $61,858,400     $ 98,950,814     $316,397,368
Proceeds from Sales ..$230,449,511     $133,490,909     $ 63,881,350      $44,885,880     $339,955,205     $109,485,440

  On  September  30,  1998,  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 ........$8,223,497       $60,999,324      $45,798,131     $59,774,809     $185,373,878     $69,264,642
Depreciation ........    --               --               --              --               --              --
                   --------------   --------------   --------------   -------------   --------------   -------------
Net .................$8,223,497       $60,999,324      $45,798,131     $59,774,809     $185,373,878     $69,264,642
                   ==============   ==============   ==============   =============   ==============   =============
Federal Tax Cost ...$230,516,406     $461,621,850     $235,302,072    $109,675,580     $301,639,689    $285,303,498
                   ==============   ==============   ==============   =============   ==============   =============
</TABLE>


38      1-800-345-2021


Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)
SEPTEMBER 30, 1998
- --------------------------------------------------------------------------------
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
Year ended
  September 30, 1998
<S>                           <C>       <C>              <C>         <C>              <C>         <C>          
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
                           ==========   =============   ==========   =============   ==========   =============
Year ended
  September 30, 1997
Sold ......................   833,120   $  68,953,917    1,988,109   $ 121,523,893    1,383,983   $  63,762,772
Issued in reinvestment
  of distributions ........   217,238      16,712,103      282,750      15,992,574      233,038       9,617,856
Redeemed ..................(1,291,432)   (107,433,075)  (1,748,806)   (106,841,952)  (1,456,337)    (66,882,232)
Reverse share split .......  (221,717)           --       (288,036)           --       (237,690)           --
                           ----------   -------------   ----------   -------------   ----------   -------------
Net increase (decrease) ...  (462,791)  $ (21,767,055)     234,017   $  30,674,515      (77,006)  $   6,498,396
                           ==========   =============   ==========   =============   ==========   =============
ADVISOR CLASS
Period ended
  September 30, 1998(1)
Sold ......................       678   $      62,003        1,571   $     112,702
Redeemed ..................      --              --           (265)        (20,000)
                           ----------   -------------   ----------   -------------
Net increase ..............       678   $      62,003        1,306   $      92,702
                           ==========   =============   ==========   =============
</TABLE>

(1)  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.


                                                 www.americancentury.com      39


Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)
SEPTEMBER 30, 1998
- --------------------------------------------------------------------------------
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
Year ended
  September 30, 1998
<S>                          <C>         <C>              <C>          <C>                <C>          <C>          
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
                            ----------   -------------   -----------   ---------------   -----------   -------------
Year ended
  September 30, 1997
Sold .....................   1,812,323   $  62,777,456    21,885,096   $   528,512,319     7,508,353   $ 147,285,096
Issued in reinvestment
  of distributions .......     241,373       7,799,177     2,286,212        51,887,629        79,036       1,500,130
Redeemed .................  (2,427,375)    (84,851,908)  (43,514,345)   (1,081,304,136)   (6,180,587)   (122,633,493)
Reverse share split ......    (248,086)           --      (2,383,074)             --         (84,260)           --
                            ----------   -------------   -----------   ---------------   -----------   -------------
Net increase (decrease) ..    (621,765)  $ (14,275,275)  (21,726,111)  $  (500,904,188)    1,322,542   $  26,151,733
                            ==========   =============   ===========   ===============   ===========   =============
ADVISOR CLASS
Period ended
  September 30, 1998(1)
Sold .....................                                                                    20,572   $     568,207
Redeemed .................                                                                   (17,756)       (495,584)
                                                                                         -----------   -------------
Net increase .............                                                                     2,816   $      72,623
                                                                                         ===========   =============
</TABLE>

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

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

    At September 30, 1998,  securities  valued at  $33,814,200  for 2025 were on
loan to brokers. Securities received as collateral, at this date, were valued at
$35,288,948.  The Fund's risks in  securities  lending are that the borrower may
not provide  additional  collateral  when required or return the securities when
due.


40      1-800-345-2021


Target: 2000--Financial Highlights
- --------------------------------------------------------------------------------
                FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED SEPTEMBER 30

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

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

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

(2)  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.

(3)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any.

- --------------------------------------------------------------------------------
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 PERIOD INDICATED

                                                                   Advisor Class
                                                                         1998(1)
PER-SHARE DATA
Net Asset Value, Beginning of Period ............................   $  91.41
                                                                    --------
Income From Investment Operations
  Net Investment Income(2) ......................................       0.54
  Net Realized and Unrealized
  Gain on Investment Transactions ...............................       1.81
                                                                    --------
  Total From Investment Operations ..............................       2.35
                                                                    --------
Net Asset Value, End of Period ..................................   $  93.76
                                                                    --------
  Total Return(3) ...............................................       2.57%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to
Average Net Assets ..............................................       0.84%(4)
Ratio of Net Investment Income to
Average Net Assets ..............................................       5.06%(4)
Portfolio Turnover Rate .........................................         82%
Net Assets, End of Period
(in thousands) ..................................................   $     64

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

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

(3)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any. Total return is not annualized.

(4)  Annualized.

                                              See Notes to Financial Statements


42      1-800-345-2021


Target: 2005--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED SEPTEMBER 30

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

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

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

(2)  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.

(3)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any.

- --------------------------------------------------------------------------------
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 PERIOD INDICATED

                                                                   Advisor Class
                                                                      1998(1)
PER-SHARE DATA
Net Asset Value, Beginning of Period ....................            $ 70.91
                                                                     -------
Income From Investment Operations

  Net Investment Income(2) ..............................               0.58
  Net Realized and Unrealized Gain
  on Investment Transactions ............................               5.20
                                                                     -------
  Total From Investment Operations ......................               5.78
                                                                     -------
Net Asset Value, End of Period ..........................            $ 76.69
                                                                     =======
  Total Return(3) .......................................               8.15%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to
Average Net Assets ......................................               0.84%(4)
Ratio of Net Investment Income to
Average Net Assets ......................................               4.87%(4)
Portfolio Turnover Rate .................................                 35%
Net Assets, End of Period
(in thousands) ..........................................            $   100

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

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

(3)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any. Total return is not annualized.

(4)  Annualized.

                                              See Notes to Financial Statements


44      1-800-345-2021


Target: 2010--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED SEPTEMBER 30

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

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

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

(2)  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.

(3)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any.

- --------------------------------------------------------------------------------
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: 2015--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED SEPTEMBER 30

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

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

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

(2)  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.

(3)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any.

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


46      1-800-345-2021


Target: 2020--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED SEPTEMBER 30

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

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

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

(2)  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.

(3)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any.

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


Target: 2025--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
FOR A SHARE OUTSTANDING THROUGHOUT THE YEAR ENDED SEPTEMBER 30 (EXCEPT AS NOTED)

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

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to
Average Net Assets .....................       0.59%          0.62%          0.67%(4)
Ratio of Net Investment Income to
Average Net Assets .....................       4.94%          6.14%          6.57%(4)
Portfolio Turnover Rate ................         52%            58%            61%
Net Assets, End of Period
(in thousands) .........................$   356,122    $    73,821    $    35,661
</TABLE>

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

(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.

- --------------------------------------------------------------------------------
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: 2025--Financial Highlights
- --------------------------------------------------------------------------------
                                                                    (Continued)

                        FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD INDICATED

                                                                  Advisor Class
                                                                      1998(1)
PER-SHARE DATA
Net Asset Value, Beginning of Period .......................          $27.27
                                                                      ------
Income From Investment Operations
  Net Investment Income(2) .................................            0.41
  Net Realized and Unrealized
  Gain on Investment Transactions ..........................            3.96
                                                                      ------
  Total From Investment Operations .........................            4.37
                                                                      ------
Net Asset Value, End of Period .............................          $31.64
                                                                      ======
  Total Return(3) ..........................................           16.02%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to
Average Net Assets .........................................            0.84%(4)
Ratio of Net Investment Income to
Average Net Assets .........................................            4.37%(4)
Portfolio Turnover Rate ....................................              52%
Net Assets, End of Period
(in thousands) .............................................          $   89

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

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

(3)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any. Total return is not annualized.

(4)  Annualized.

See Notes to Financial Statements


                                                 www.americancentury.com      49


Report of Independent Accountants
- --------------------------------------------------------------------------------

To the Board of Trustees and Shareholders of
the American Century Target Maturities Trust

In our opinion, the accompanying statements of assets and liabilities, including
the schedules of investments, and the related statements of operations,  changes
in net assets and the  financial  highlights  present  fairly,  in all  material
respects,  the  financial  position  of the  American  Century  - Benham  Target
Maturities Trust:  2000 (2000),  the American Century - Benham Target Maturities
Trust: 2005 (2005),  the American Century - Benham Target Maturities Trust: 2010
(2010),  the American Century - Benham Target Maturities Trust: 2015 (2015), the
American Century - Benham Target Maturities Trust 2020: (2020), and the American
Century - Benham Target Maturities Trust: 2025 (2025) (hereafter  referred to as
the "Funds") at September 30, 1998, the results of each of their operations, the
changes in each of their net assets and the  financial  highlights  for the year
then ended, in conformity with generally  accepted  accounting  principles.  The
statement of changes in net assets for the year ended September 30, 1997 and the
financial  highlights  for each of the four years in the period ended  September
30,  1997 for  2000,  2005,  2010,  2020 and the two years in the  period  ended
September 30, 1997 for 2025 were audited by other auditors,  whose report, dated
November 3, 1997,  expressed an unqualified  opinion on those statements.  These
financial  statements  and  financial  highlights   (hereafter  referred  to  as
"financial  statements") are the  responsibility of the Funds'  management;  our
responsibility  is to express an opinion on these financial  statements based on
our audits. We conducted our audits of these financial  statements in accordance
with  generally  accepted  auditing  standards  which  require  that we plan and
perform the audit to obtain  reasonable  assurance  about  whether the financial
statements are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements,  assessing the accounting  principles used and significant estimates
made by management, and evaluating the overall financial statement presentation.
We believe  that our  audits,  which  included  confirmation  of  securities  at
September  30, 1998 by  correspondence  with the  custodian  and brokers and the
application of alternative  auditing procedures where confirmations from brokers
were not received, provide a reasonable basis for the opinion expressed above.


                                                      PricewaterhouseCoopers LLP

Kansas City, Missouri
November 11, 1998


50      1-800-345-2021


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

SHARE CLASSES

     American  Century  offers two  classes of shares for the Target  Maturities
Trust funds. One class is for investors who buy directly from American  Century,
and the other is for investors who buy through financial intermediaries.

     The  original  class of Target  Maturities  shares is called  the  Investor
Class.  All shares issued and  outstanding  before  September 2, 1997, have been
designated as Investor Class shares. Investor Class shares may also be purchased
after September 2, 1997.  Investor Class shareholders do not pay any commissions
or other fees for  purchase  of fund  shares  directly  from  American  Century.
Investors who buy Investor Class shares through a broker-dealer  may be required
to pay the  broker-dealer  a transaction  fee. The price and  performance of the
Investor  Class  shares are listed in  newspapers.  No other class is  currently
listed.

     In  addition,  there is an  Advisor  Class,  which is sold  through  banks,
broker-dealers,  insurance  companies,  and  financial  advisors.  Advisor Class
shares are subject to a 0.50% Rule 12b-1 service and  distribution  fee. Half of
that fee is available to pay for recordkeeping and administrative  services, and
half is available to pay for  distribution  services  provided by the  financial
intermediary  through  which the Advisor Class shares are  purchased.  The total
expense  ratio of the Advisor Class is 0.25% higher than the total expense ratio
of the Investor  Class.  The Advisor Class had not commenced as of September 30,
1998, for Target Maturities: 2010, 2015, or 2020.

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

RETIREMENT ACCOUNT INFORMATION

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

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

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


                                                 www.americancentury.com      51


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

INVESTMENT PHILOSOPHY AND POLICIES

     The Benham Group offers 38  fixed-income  funds,  ranging from money market
funds 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,  are
variable-priced  bond funds that 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.

[left margin]

INVESTMENT TEAM LEADERS

PORTFOLIO MANAGERS
     DAVE SCHROEDER
     JEREMY FLETCHER


52      1-800-345-2021


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 41-49.

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.

* 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.

     CATS  (CERTIFICATES OF ACCRUAL OF TREASURY  SECURITIES)--issued  by Salomon
     Brothers, Inc.

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

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

* CUBES--coupon zeros that have been converted from physical to wirable bonds.


                                                 www.americancentury.com      53


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


54      1-800-345-2021


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


                                                 www.americancentury.com      55


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


56      1-800-345-2021


[inside back cover]

American Century Funds

Benham Group(reg.sm)
TAXABLE BOND FUNDS
U.S. Treasury & Government
   Short-Term Treasury
   Short-Term Government
   GNMA
   Intermediate-Term Treasury
   Long-Term Treasury
   Inflation-Adjusted Treasury
   Target Maturities Trust: 2000
   Target Maturities Trust: 2005
   Target Maturities Trust: 2010
   Target Maturities Trust: 2015
   Target Maturities Trust: 2020
   Target Maturities Trust: 2025

Corporate & Diversified
   Limited-Term Bond
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   Bond
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International
   International Bond

TAX-FREE & MUNICIPAL BOND FUNDS
Multiple-State
   Limited-Term Tax-Free
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   High-Yield Municipal

Single-State
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MONEY MARKET FUNDS
Taxable
   Capital Preservation
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   Premium Capital Reserve
   Premium Government Reserve
   Prime Money Market

Tax-Free & Municipal
   California Municipal Money Market
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   Florida Municipal Money Market
   Tax-Free Money Market

AMERICAN CENTURY[reg.sm] GROUP
Asset Allocation Funds
   Strategic Allocation: Conservative
   Strategic Allocation: Moderate
   Strategic Allocation: Aggressive

Balanced Fund
   Balanced

Conservative Equity Funds
   Income and Growth
   Equity Income
   Value
   Equity Growth

Specialty Funds
   Utilities
   Real Estate
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   Global Gold

Small Cap Funds
   Small Cap Quantitative
   Small Cap Value

TWENTIETH CENTURY GROUP
Growth Funds
   Select
   Heritage
   Growth
   Ultra

Aggressive Growth Funds
   Vista
   Giftrust
   New Opportunities

International Growth Funds
   International Growth
   International Discovery
   Emerging Markets

[right margin]

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

P.O. BOX 419200
KANSAS CITY, MISSOURI
64141-6200

INVESTOR SERVICES:
1-800-345-2021 OR 816-531-5575

AUTOMATED INFORMATION LINE:
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INTERNET: WWW.AMERICANCENTURY.COM


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.

(c) 1998 AMERICAN CENTURY SERVICES CORPORATION
FUNDS DISTRIBUTOR, INC.


[recycled logo]
Recycled


[back cover]

[40 Years]
Four Decades of Serving Investors
40 Years
American Century
1958-1998

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



9811                              (c)1998 American Century Services Corporation
SH-BKT-14210                                            Funds Distributor, Inc.


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