AMERICAN CENTURY PREMIUM RESERVES INC
N-30D, 1998-11-25
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[front cover]                                                 September 30, 1998

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

                               [graphic of stairs]

BENHAM GROUP
- ------------------------------------
PREMIUM GOVERNMENT RESERVE
PREMIUM CAPITAL RESERVE

                                                 [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
PREMIUM GOVERNMENT RESERVE
(TWPXX)

Benham Group
PREMIUM CAPITAL RESERVE
(TCRXX)

[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.

     Money market funds such as Premium  Government  Reserve and Premium Capital
Reserve  reaffirmed  their value during the six months ended September 30, 1998,
when global economic and financial conditions worsened.  Stock markets worldwide
suffered sharp declines,  while bonds produced positive returns and money market
funds continued to be a stable investment.

     This  unstable   market   environment   illustrated  the  importance  of  a
diversified  investment  portfolio.  Allocating your assets among stocks, bonds,
and money market funds can help  weatherproof  your portfolio  against  dramatic
changes in the economic or investment climate.

     Amid the recent turbulence,  Premium Government Reserve and Premium Capital
Reserve continued to perform well,  providing  relatively  attractive yields and
returns.

     In one respect,  however,  money  market funds were  affected by the market
turmoil.  The volume of money  pouring into money market  securities  drove down
yields. At the same time, the threat of global economic weakness caused interest
rates to decline.  On September 29, the Federal Reserve  acknowledged the global
slowdown and cut its bellwether  federal funds rate for the first time in almost
three  years.  Two  weeks  later,  the Fed  cut  the  rate  again,  providing  a
significant psychological boost to investors, as well as to the U.S. economy.

     The rate cuts by the Fed and  declining  interest  rates in general make it
likely that money market fund yields will trend  downward in the coming  months.
However,  money fund yields  should still keep pace or remain ahead of inflation
because the threat of an economic downturn is likely to hold inflation in check.

     On the corporate  front,  we have a substantial  effort underway to prepare
American  Century's computer systems for the year 2000. Through the rest of 1998
and 1999, we will be extensively  testing our systems,  including those involved
with dividend payments.

     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
   Services Update ........................................................    3
PREMIUM GOVERNMENT RESERVE
   Performance Information ................................................    4
   Management Q&A .........................................................    5
   Portfolio Composition by
   Security Type ..........................................................    5
   Portfolio Composition by
   Maturity ...............................................................    6
   Schedule of Investments ................................................    7
PREMIUM CAPITAL RESERVE
   Performance Information ................................................    9
   Management Q&A .........................................................   10
   Portfolio Composition by
   Security Type ..........................................................   10
   Portfolio Composition by
   Credit Rating ..........................................................   11
   Schedule of Investments ................................................   12
FINANCIAL STATEMENTS
   Statements of Assets and
   Liabilities ............................................................   15
   Statements of Operations ...............................................   16
   Statements of Changes
   in Net Assets ..........................................................   17
   Notes to Financial
   Statements .............................................................   18
   Financial Highlights ...................................................   20
OTHER INFORMATION
   Retirement Account
   Information ............................................................   22
   Background Information
      Investment Philosophy
      and Policies ........................................................   23
      Comparative Indices .................................................   23
      Lipper Rankings .....................................................   23
      Credit Rating
      Guidelines ..........................................................   23
      Investment Team
      Leaders .............................................................   23
   Glossary ...............................................................   24


                                                  www.americancentury.com      1


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

PREMIUM GOVERNMENT RESERVE

*   Premium  Government  Reserve  performed  well,   providing   investors  with
    attractive  performance  and stability amid  volatility in global  financial
    markets.

*   As the interest rate outlook changed,  we repositioned the portfolio to lock
    in relatively  higher  yields.  We extended the fund's  average  maturity by
    buying more longer-term government money market securities.

*   Premium  Government  Reserve invested  primarily in securities issued by the
    Federal  Home Loan  Mortgage  Corporation  (FHLMC) and the Federal  National
    Mortgage  Association  (FNMA, or Fannie Mae). The relatively large supply of
    FHLMC and Fannie Mae paper helped keep their yields attractive.

*   In  anticipation  of falling  interest  rates,  we'll  continue  to keep the
    portfolio's average maturity on the long side. We'll do our best to maintain
    the  fund's  yield,  but we expect  Premium  Government  Reserve's  yield to
    decline as older,  higher-yielding securities mature and we have to reinvest
    at lower yields.

PREMIUM CAPITAL RESERVE

*   Premium Capital Reserve performed well,  providing investors with attractive
    performance and stability amid volatility in global financial markets.

*   The global  economic  turmoil had little  direct  effect on Premium  Capital
    Reserve, though heavy demand for relatively safe cash-equivalent investments
    drove down yields on money market securities.

*   As the interest rate outlook changed,  we repositioned the portfolio to lock
    in relatively  higher  yields.  We extended the fund's  average  maturity by
    buying longer-maturity  securities,  including high-quality commercial paper
    (CP).  CP didn't  attract as much  demand as  Treasury  bills,  so yields on
    commercial paper were relatively high.

*   In  anticipation  of falling  interest  rates,  we'll  continue  to keep the
    portfolio's average maturity on the long side. We'll do our best to maintain
    the fund's yield,  but we expect Premium Capital  Reserve's yield to decline
    as older, higher-yielding securities mature.

[left margin]

          PREMIUM GOVERNMENT RESERVE
                   (TWPXX)
TOTAL RETURNS:              AS OF 9/30/98
    6 Months                       2.59%*
    1 Year                          5.25%
NET ASSETS:                 $76.0 million
7-DAY CURRENT YIELD:                5.14%
INCEPTION DATE:                    4/1/93

            PREMIUM CAPITAL RESERVE
                   (TCRXX)
TOTAL RETURNS:              AS OF 9/30/98
    6 Months                       2.64%*
    1 Year                          5.38%
NET ASSETS:                $213.1 million
7-DAY CURRENT YIELD:                5.19%
INCEPTION DATE:                    4/1/93

* Not annualized.

See Total Returns on pages 4 and 9.
Investment terms are defined in the Glossary on page 24.


2      1-800-345-2021


Services Update
- --------------------------------------------------------------------------------

     We get many questions from money market investors about our services.  Here
are answers to several frequently asked questions.

CAN I MAKE DIRECT DEPOSITS INTO MY MONEY MARKET FUND?

     Yes. Give us a call, and we can send you the information you need to set up
direct deposit of your paycheck, Social Security check, Treasury Direct interest
payment, military allotment, or payments from other government agencies.

WHAT IS THE HOLDING PERIOD ON NEW DEPOSITS INTO MY ACCOUNT?

     Generally there is an eight-business-day holding period for deposited funds
(initial investments in a new account are held for 15 calendar days). There is a
one-day holding period for U.S.  Treasury checks,  money orders,  and travelers'
checks.

IS THERE AN EASY WAY TO MOVE MONEY FROM MY MONEY  MARKET  ACCOUNT  INTO MY STOCK
AND BOND FUND ACCOUNTS ON A REGULAR BASIS, FOR DOLLAR-COST-AVERAGING PURPOSES?

     Yes. Our "Automatic  Exchange" plan allows  regularly  scheduled  automatic
transfers  from  your  American  Century  money  market  fund  into  any of your
variable-price  American  Century stock or bond funds.  You can arrange for this
service with a phone call.


IS THERE A LIMIT TO THE NUMBER OF  EXCHANGES  I CAN MAKE OUT OF MY MONEY  MARKET
FUND?

     If you are  exchanging  from your money market fund into your bond or stock
fund, there is no limit. However, there is a limit of six exchanges per calendar
year out of your bond and stock funds.

     Exchanges can be made by:

     * calling an Investor Services Representative at 1-800-345-2021

     * calling our Automated Information Line at 1-800-345-8765*

     * writing us a letter

     * visiting our Web site at www.americancentury.com*

IS THERE A FEE FOR WRITING CHECKS AGAINST MY MONEY MARKET FUND?

     No. You can write as many checks as you like at no charge,  as long as each
check is for $100 or more.

IF  YOU  HAVE  ANY  QUESTIONS   ABOUT  OUR  SERVICES,   CALL  US  TOLL  FREE  AT
1-800-345-2021 OR E-MAIL US AT OUR WEB SITE (WWW.AMERICANCENTURY.COM).

[right margin]

ACCESSING YOUR  MONEY. . .

WE CAN SEND A CHECK  DIRECTLY TO YOU AT YOUR ADDRESS OF RECORD.  ALL YOU NEED TO
DO IS GIVE US A CALL OR WRITE US A LETTER REQUESTING THE CHECK. WE CAN ALSO MAKE
AUTOMATIC DEPOSITS FROM YOUR MONEY MARKET FUND TO YOUR BANK ACCOUNT.

* Requires shareholder authorization.


                                                  www.americancentury.com      3


Premium Government Reserve--Performance
- --------------------------------------------------------------------------------
TOTAL RETURNS AS OF SEPTEMBER 30, 1998
<TABLE>
<CAPTION>
                                                      INCEPTION 4/1/93
                      PREMIUM GOVERNMENT   90-DAY TREASURY   INST. U.S. GOV'T. MONEY MARKET FUNDS(2)
                           RESERVE            BILL INDEX       AVERAGE RETURN    FUND'S RANKING
- -------------------------------------------------------------------------------------------------
<S>                       <C>                 <C>                 <C>              <C>                     
6 MONTHS(1) ..............  2.59%               2.48%            2.62%                 --
1 YEAR ...................  5.25%               5.11%            5.32%            60 OUT OF 88
- -------------------------------------------------------------------------------------------------
AVERAGE ANNUAL RETURNS
3 YEARS ..................  5.20%               5.15%            5.27%            49 OUT OF 74
5 YEARS ..................  4.89%               4.96%            4.96%            37 OUT OF 52
LIFE OF FUND .............  4.69%               4.81%(3)         4.79%(3)         35 OUT OF 47(3)
</TABLE>

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

(2)  According to Lipper Analytical Services, an independent mutual fund ranking
     service.

(3)  Since 4/30/93,  the date nearest the fund's inception for which return data
     are available.

See pages 23-24 for more information about returns,  the comparative  index, and
Lipper fund rankings.

PORTFOLIO AT A GLANCE
                            9/30/98           3/31/98
NUMBER OF SECURITIES          25                27
WEIGHTED AVERAGE
MATURITY                    43 DAYS           49 DAYS
EXPENSE RATIO               0.45%*             0.45%

* Annualized.

YIELDS AS OF SEPTEMBER 30, 1998
7-DAY CURRENT YIELD         5.14%
7-DAY EFFECTIVE YIELD       5.27%

Past performance does not guarantee future results.

Money market funds are neither  insured nor  guaranteed by the FDIC or any other
government agency.

Yields will fluctuate, and although the fund seeks to preserve the value of your
investment  at $1 per share,  it is possible to lose money by  investing  in the
fund.


4      1-800-345-2021


Premium Government Reserve--Q&A
- --------------------------------------------------------------------------------
/photo of Amy O'Donnell/

     An interview with Amy O'Donnell,  a senior portfolio manager on the Premium
Government Reserve fund investment team.

HOW DID THE FUND PERFORM DURING THE SIX MONTHS ENDED SEPTEMBER 30, 1998?

     Premium  Government  Reserve  performed well,  providing  shareholders with
stability amid volatile global financial markets.  For the six-month period, the
portfolio  returned  2.59%,  compared  with the 2.62%  average  return of the 94
"Institutional  U.S. Government Money Market Funds" tracked by Lipper Analytical
Services.  (See the Total  Returns  table on the  previous  page for other  fund
performance comparisons.)

     But unlike  most of the funds in its Lipper  category,  Premium  Government
Reserve is not really an  institutional  fund;  instead,  it's intended for high
net-worth  individual  investors.  Institutional  funds  typically  have  higher
minimum  balances  (often $1  million  or more)  and,  more  importantly,  lower
expenses.  Premium  Government  Reserve's higher expenses give it a disadvantage
against the institutional fund average.

     However,  Premium  Government  Reserve has lower  expenses than the average
non-institutional  government money market fund. As a result, the fund can offer
attractive yields to individuals able to meet its $100,000 minimum investment.

     For example,  according to IBC's Money Fund  Report,  the fund's  seven-day
effective yield of 5.27% compared  favorably with the 4.92% yield of the average
non-institutional  "Taxable  U.S.  Government  and  Agency  Money  Fund"  as  of
September 29 (the date closest to the period end for which data are available).

YIELDS FOR MOST U.S. FIXED-INCOME SECURITIES FELL DURING THE PERIOD. WHY?

     Weaker economic conditions,  declining corporate earnings,  and the absence
of  inflation  sent  interest  rates lower,  causing the yields of  fixed-income
securities to fall. Continued bad economic and financial news from Asia, Russia,
and Latin America ignited investor interest in U.S.  government  securities as a
safe haven from the problems facing stocks and corporate bonds. As the news from
Asia and emerging  markets  worsened,  demand for U.S.  fixed-income  securities
surged.

     Interest rate and yield declines were  reinforced in September and October,
when the Federal  Reserve  lowered its federal funds rate from 5.5% to 5.0%. The
Fed cut rates to bolster a faltering  financial  services  industry  hit hard by
stock market losses and a U.S.  economy that showed signs of catching the "Asian
flu."

GIVEN THIS ENVIRONMENT, WHAT FUND STRATEGIES DID YOU EMPLOY?

     Although  we  managed   the  fund   conservatively,   we  actively   sought
opportunities to buy securities with relatively high yields. This meant watching
the market closely for supply and demand inequalities.  For example, we'd invest
in agency securities  during peak periods of issuance,  when yields tended to be
higher.

[right margin]

"PREMIUM GOVERNMENT RESERVE PERFORMED WELL, PROVIDING SHAREHOLDERS WITH
STABILITY AMID VOLATILE GLOBAL FINANCIAL MARKETS."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

AS OF SEPTEMBER 30, 1998
U.S. Gov't. Agency Discount Notes   60%
U.S. Gov't. Agency Securities       28%
Repurchase Agreements               12%

AS OF MARCH 31, 1998
U.S. Gov't. Agency Discount Notes   66%
U.S. Gov't. Agency Notes            30%
Repurchase Agreements                4%

Security types are defined on page 24.


                                                  www.americancentury.com      5


Premium Government Reserve--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

     We were also successful at locking in higher yields by purchasing long-term
securities when yields were relatively  high. For example,  we extended  Premium
Government  Reserve's  average  maturity  significantly  during  the  summer,  a
strategy that helped us maintain the fund's yield when interest rates fell.

CAN YOU ELABORATE ON THIS STRATEGY?

     Back in March, the consensus was that the Fed would raise interest rates to
slow down the strong U.S.  economy.  By the  summer,  however,  the  problems in
Russia and Asia became more ominous,  and the potential  negative  impact on the
U.S. economy convinced us that lower interest rates were likely. As a result, we
extended Premium  Government  Reserve's  average maturity from around 50 days in
July to 80 days by early August.

     This longer average maturity worked  well--when  short-term  interest rates
fell in  anticipation  of a Fed rate cut,  we had  relatively  fewer  securities
maturing, so we didn't have to buy much new, lower-yielding paper.

DID THE FUND'S AGENCY WEIGHTINGS CHANGE?

     Not really.  We continued to focus on securities issued by the Federal Home
Loan Mortgage  Corporation (FHLMC) and the Federal National Mortgage Association
(FNMA,  or Fannie Mae) because the  relatively  large  supply  helped keep their
yields attractive throughout the period.

WHAT'S YOUR INTEREST RATE OUTLOOK?

     We expect  short-term  interest rates to fall further.  It appears that the
U.S. economy could continue to weaken as a result of turmoil overseas.  While we
don't expect the Fed to make drastic  cuts in interest  rates,  we do believe it
will move the  federal  funds rate below the  current 5% to  stimulate  the U.S.
economy.

GIVEN THAT OUTLOOK, WHAT IS YOUR STRATEGY FOR THE NEXT SIX MONTHS?

     Because  we  anticipate  lower  interest  rates,  we'll  try  to  keep  the
portfolio's  average  maturity  on the long side in the coming  months.  We will
continue to manage the fund very conservatively  while doing our best to provide
the highest yield possible for our shareholders.

[left margin]

"WE EXTENDED PREMIUM GOVERNMENT RESERVE'S AVERAGE MATURITY SIGNIFICANTLY DURING
THE SUMMER, A STRATEGY THAT HELPED US MAINTAIN THE FUND'S YIELD WHEN INTEREST
RATES FELL."

[pie charts - data below]

PORTFOLIO COMPOSITION BY MATURITY

AS OF SEPTEMBER 30, 1998
1-30 days         44%
31-60 days        21%
61-90 days        32%
91-180 days        3%

AS OF MARCH 31, 1998
1-30 days         47%
31-60 days        21%
61-90 days        12%
91-180 days       16%
181-397 days       4%


6      1-800-345-2021


Premium Gov't. Reserve--Sched. of Investments
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998 (UNAUDITED)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
U.S. GOVERNMENT AGENCY DISCOUNT NOTES(1)
              $  879,000   FFCB Discount Notes, 5.40%,
                              10/8/98                              $  878,077
               2,000,000   FHLMC Discount Notes, 5.46%,
                              10/8/98                               1,997,877
               3,000,000   FHLMC Discount Notes, 5.45%,
                              10/9/98                               2,996,367
               1,240,000   FHLMC Discount Notes, 5.45%,
                              10/16/98                              1,237,184
               5,000,000   FHLMC Discount Notes, 5.38%,
                              11/20/98                              4,962,639
               4,000,000   FHLMC Discount Notes, 5.37%,
                              12/7/98                               3,960,024
               1,273,000   FHLMC Discount Notes, 5.39%,
                              12/9/98                               1,259,849
                 742,000   FHLMC Discount Notes, 5.38%,
                              12/18/98                                733,351
               1,000,000   FNMA Discount Notes, 5.39%,
                              10/9/98                                 998,802
               5,278,000   FNMA Discount Notes, 5.43%,
                              10/27/98                              5,257,302
               2,000,000   FNMA Discount Notes, 5.43%,
                              11/19/98                              1,985,232
               1,755,000   FNMA Discount Notes, 5.37%,
                              11/24/98                              1,740,864
               1,243,000   FNMA Discount Notes, 5.39%,
                              12/3/98                               1,231,275
                 694,000   FNMA Discount Notes, 5.38%,
                              12/9/98                                 686,843
               6,000,000   FNMA Discount Notes, 5.39%,
                              12/15/98                              5,932,642
               3,215,000   FNMA Discount Notes, 5.38%,
                              12/18/98                              3,177,524
               5,000,000   FNMA Discount Notes, 5.36%,
                              12/22/98                              4,938,942
                                                                 -------------
TOTAL U.S. GOVERNMENT
AGENCY DISCOUNT NOTES--60.1%                                       43,974,794
                                                                 -------------

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
U.S. GOVERNMENT AGENCY SECURITIES(1)
              $5,000,000   FFCB MTN, VRN, 5.55%,
                              11/3/98, resets quarterly off the
                              3-month T-Bill rate plus 0.50%
                              with no caps                       $  5,000,000
               2,000,000   FHLB, 5.69%, 10/2/98                     2,000,004
               1,500,000   FHLB, 6.10%, 10/7/98                     1,500,098
               1,700,000   FHLB, 5.79%, 10/23/98                    1,700,192
               1,500,000   FHLB, 5.80%, 12/23/98                    1,500,542
               2,000,000   FHLB, 5.625%, 3/2/99                     2,000,000
               2,000,000   FHLMC, 13.00%, 11/4/98                   2,012,753
               5,000,000   FNMA, 6.20%, 10/14/98                    5,001,134
                                                                 -------------
TOTAL U.S. GOVERNMENT
AGENCY SECURITIES--28.3%                                           20,714,723
                                                                 -------------
TEMPORARY CASH INVESTMENTS

Repurchase Agreement, Merrill Lynch & Co.,
    Inc., (U.S. Treasury obligations), in a joint
    trading account at 5.30%, dated 9/30/98,
    due 10/1/98 (Delivery value $1,348,198)                         1,348,000

Repurchase Agreement, Morgan Stanley
    Group, Inc., (U.S. Treasury obligations), in
    a joint trading account at 5.30%, dated
    9/30/98, due 10/1/98 (Delivery value
    $3,585,528)                                                     3,585,000

Repurchase Agreement, State Street Boston
    Corp., (U.S. Treasury obligations), in a joint
    trading account at 5.38%, dated 9/30/98,
    due 10/1/98 (Delivery value $3,585,536)                         3,585,000
                                                                 -------------

TOTAL TEMPORARY CASH
INVESTMENTS--11.6%                                                  8,518,000
                                                                 -------------

TOTAL INVESTMENT SECURITIES--100.0%                               $73,207,517
                                                                 =============

See Notes to Financial Statements


                                                  www.americancentury.com      7


Premium Gov't. Reserve--Sched. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
SEPTEMBER 30, 1998 (UNAUDITED)

NOTES TO SCHEDULE OF INVESTMENTS

FFCB = Federal Farm Credit Bank

FHLB = Federal Home Loan Bank

FHLMC = Federal Home Loan Mortgage Corporation

FNMA = Federal National Mortgage Association

MTN = Medium Term Note

resets = The frequency with which a security's coupon changes,  based on current
market conditions or an underlying index. The more frequently a security resets,
the less risk the  investor is taking  that the coupon  will vary  significantly
from current market rates.

VRN =  Variable  Rate  Note.  Interest  reset  date  is  indicated  and  used in
calculating the weighted average  portfolio  maturity.  Coupon rate indicated is
effective September 30, 1998.

(1)  The  rates  for U.S.  Government  Agency  Discount  Notes  are the yield to
     maturity at purchase. The rates for other U.S. Government Agency securities
     are the stated coupon rates.

- --------------------------------------------------------------------------------
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 amortized cost of each investment

* the percent and dollar breakdown of each investment category

                                              See Notes to Financial Statements


8      1-800-345-2021


Premium Capital Reserve--Performance
- --------------------------------------------------------------------------------
TOTAL RETURNS AS OF SEPTEMBER 30, 1998
<TABLE>
<CAPTION>
                                                INCEPTION 4/1/93
                           PREMIUM    90-DAY TREASURY    INSTITUTIONAL MONEY MARKET FUNDS(2)
                       CAPITAL RESERVE   BILL INDEX       AVERAGE RETURN   FUND'S RANKING
- -------------------------------------------------------------------------------------------
<S>                       <C>                 <C>            <C>               <C>                   
6 MONTHS(1) ..............  2.64%          2.48%             2.66%               --
1 YEAR ...................  5.38%          5.11%             5.40%         111 OUT OF 188
- -------------------------------------------------------------------------------------------
AVERAGE ANNUAL RETURNS
3 YEARS ..................  5.29%          5.15%             5.32%          88 OUT OF 149
5 YEARS ..................  4.97%          4.96%             5.03%          62 OUT OF 98
LIFE OF FUND .............  4.77%          4.81%(3)          4.87%(3)       58 OUT OF 87(3)
</TABLE>

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

(2)  According to Lipper Analytical Services, an independent mutual fund ranking
     service.

(3)  Since 4/30/93,  the date nearest the fund's inception for which return data
     are available.

See pages 23-24 for more information about returns,  the comparative  index, and
Lipper fund rankings.

PORTFOLIO AT A GLANCE
                            9/30/98           3/31/98
NUMBER OF SECURITIES          48                59
WEIGHTED AVERAGE
MATURITY                    52 DAYS           50 DAYS
EXPENSE RATIO               0.45%*             0.45%

* Annualized.

YIELDS AS OF SEPTEMBER 30, 1998
7-DAY CURRENT YIELD         5.19%
7-DAY EFFECTIVE YIELD       5.33%

Past performance does not guarantee future results.

Money market funds are neither  insured nor  guaranteed by the FDIC or any other
government agency.

Yields will fluctuate, and although the fund seeks to preserve the value of your
investment  at $1 per share,  it is possible to lose money by  investing  in the
fund.


                                                  www.americancentury.com      9


Premium Capital Reserve--Q&A
- --------------------------------------------------------------------------------

     An interview with Denise Tabacco and John Walsh,  portfolio managers on the
Premium Capital Reserve fund investment team.

HOW DID THE FUND PERFORM DURING THE SIX MONTHS ENDED SEPTEMBER 30, 1998?

     Premium  Capital  Reserve  performed  well,  providing   shareholders  with
stability amid volatile global financial markets.  For the six-month period, the
portfolio  returned  2.64%,  compared with the 2.66%  average  return of the 196
"Institutional Money Market Funds" tracked by Lipper Analytical  Services.  (See
the  Total  Returns  table on the  previous  page  for  other  fund  performance
comparisons.)

     But  unlike  most of the  funds in its  Lipper  category,  Premium  Capital
Reserve is not really an  institutional  fund;  instead,  it's intended for high
net-worth  individual  investors.  Institutional  funds  typically  have  higher
minimum  balances  (often $1  million  or more)  and,  more  importantly,  lower
expenses.  Premium  Capital  Reserve's  higher  expenses give it a  disadvantage
against the institutional fund average.

     However,  Premium  Capital  Reserve  has lower  expenses  than the  average
non-institutional  money market fund. As a result, the fund can offer attractive
yields to individuals able to meet its $100,000 minimum investment.

     For example,  according to IBC's Money Fund  Report,  the fund's  seven-day
effective yield of 5.33% compared  favorably with the 4.99% yield of the average
non-institutional  "First Tier Taxable  Money Fund" as of September 29 (the date
closest to the period end for which data are available).

WHAT IMPACT DID THE FINANCIAL TURMOIL IN ASIA AND RUSSIA HAVE ON PREMIUM CAPITAL
RESERVE'S PERFORMANCE?

     It had only an indirect effect on  performance.  The turmoil had more of an
impact on the U.S. money market in general,  the interest rate outlook,  and our
portfolio strategy.

     The sell-off in global  financial  markets in July and August resulted in a
"flight to  quality"  as  investors  sought a safe haven for their  money.  This
caused heavy demand for U.S. money market securities, resulting in lower yields,
especially for U.S. government securities.

     As the  yields for  government  money  market  securities  fell,  the "risk
premium" (the yield  difference)  between those  securities and corporate  money
market  securities  increased  to about 35 basis  points  (0.35%--a  basis point
equals one one-hundredth of 1%).

PLEASE DESCRIBE THE RISK PREMIUM IN MORE DETAIL. WHAT IS ITS SIGNIFICANCE?

     Premium Capital Reserve invests primarily in high-quality  commercial paper
(CP) issued by  corporations  (see the pie charts at left).  Historically,  this
paper has yielded about 20 basis points more than government  securities such as
Treasury  bills.  This  higher  yield  is  the  "risk  premium"--the  additional
compensation  investors get for the slightly greater  financial risk that CP has
compared to government-backed securities.

     Fortunately,  the risk  reflected in the risk premium can be managed.  It's
important to remember that we invest primarily in "top tier" CP--securities that
have been rated in the top two  credit  categories  by at least two  independent
credit rating agencies. The

[left margin]

"PREMIUM CAPITAL RESERVE PERFORMED WELL,  PROVIDING  SHAREHOLDERS WITH STABILITY
AMID VOLATILE GLOBAL FINANCIAL MARKETS."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

AS OF SEPTEMBER 30, 1998
Commercial Paper         71%
Variable-Rate Notes      18%
Asset-Backed Securities   7%
CDs                       3%
Other                     1%

AS OF MARCH 31, 1998
Commercial Paper         66%
Variable-Rate Notes      18%
Asset-Backed Securities   7%
CDs                       8%
Other                     1%

Security types are defined on page 24.


10      1-800-345-2021


Premium Capital Reserve--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

Securities & Exchange  Commission  (SEC) also mandates  minimum credit standards
for all money market funds.

     Our own internal  credit  research team further  enhances  Premium  Capital
Reserve's credit strength.  This team constantly assesses the financial strength
of companies  issuing CP,  sometimes  rejecting  investments that would have met
rating agency and SEC standards.

WHAT OTHER IMPACT DID THE GLOBAL FINANCIAL TURMOIL HAVE?

     It reversed the interest  rate  outlook.  Earlier this year,  the consensus
view was that U.S. interest rates would rise in response to inflation  pressures
caused by the U.S.  economy's strong growth.  By August,  investors and analysts
changed their tune,  predicting  that interest  rates would fall to stimulate an
economy weakened by fallout from the global financial implosions.

     As the interest rate outlook  changed,  we repositioned  the portfolio.  We
bought securities with longer maturities to lock in higher yields, and we bought
some shorter-term securities to keep the fund's average maturity below 90 days.

     We acquired the  longer-term  securities  when they still yielded more than
shorter-term securities. That's a normal yield environment--you'd expect to earn
more yield for securities that take longer to mature and therefore expose you to
a greater possibility of economic and interest rate changes.

     However,  money market yields inverted in August,  and one-year  securities
actually yielded less than three-month  securities.  One-year yields declined to
reflect investors' belief that the Federal Reserve would cut short-term interest
rates. The yields for shorter-term  paper stayed higher because these securities
were closer to maturity and were less likely to be affected by Fed rate cuts.

HAS THE CREDIT QUALITY OF PREMIUM CAPITAL RESERVE'S PORTFOLIO CHANGED?

     The  portfolio's  percentage of securities  rated A-1+ by Standard & Poor's
declined (see the chart at right).  However,  our internal  credit research team
continues to monitor the quality of each issuer whose  securities we hold in the
portfolio.  Based upon this  internal  assessment,  we believe  Premium  Capital
Reserve's credit quality remains very strong.

     The portfolio is now  dominated by companies  based in the U.S. and Europe,
where financial  conditions are stable.  But we're not taking that stability for
granted--we're  continuing to assess the quality of some U.S. banking securities
given their lending practices and possible exposure to recent turmoil in various
world financial markets. Our credit team will not hesitate to remove established
U.S. banks from our approved list if they no longer meet our criteria.

WHAT IS YOUR OUTLOOK FOR PREMIUM CAPITAL RESERVE?

     We expect the fund's yield to decline as interest  rates  continue to fall.
In  September,  the Fed lowered its federal funds rate target for the first time
in nearly three years and followed that up with another rate cut in mid-October.
These cuts will eventually  force us to buy  lower-yielding  securities when our
older, higher-yielding holdings mature. Working closely with our credit team, we
will maintain high credit standards and strive to avoid vulnerable companies and
industries.

[right margin]

"OUR  OWN  INTERNAL  CREDIT  RESEARCH  TEAM  FURTHER  ENHANCES  PREMIUM  CAPITAL
RESERVE'S CREDIT STRENGTH."

PORTFOLIO COMPOSITION BY CREDIT RATING
                % OF FUND INVESTMENTS
               AS OF             AS OF
              9/30/98           3/31/98
A-1+             54%              72%
A-1              46%              28%

Ratings provided by Standard & Poor's.  See Credit Rating  Guidelines on page 23
for more information.


                                                  www.americancentury.com     11


Premium Capital Reserve--Sched. of Investments
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998 (UNAUDITED)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
COMMERCIAL PAPER(1)
BANKING--4.6%
              $2,000,000   Bankers Trust New York Corp.,
                              5.48%, 10/13/98                     $  1,996,346
               3,000,000   Generale Bank, Inc.,
                              5.49%-5.52%,
                              10/22/98-12/3/98                       2,984,236
               2,000,000   IMI Funding Corp. (USA), 5.52%,
                              10/20/98                               1,994,174
               2,162,000   IMI Funding Corp. (USA), 5.52%,
                              11/6/98 (Acquired 9/4/98,
                              Cost $2,141,191)(2)                    2,150,109
                                                                 --------------
                                                                     9,124,865
                                                                 --------------
CHEMICALS & RESINS--0.4%
                 800,000   du Pont (E.I.) de Nemours & Co.,
                              5.53%, 10/27/98                          796,805
                                                                 --------------
COMMUNICATIONS EQUIPMENT--2.0%
               4,000,000   Motorola, Inc., 5.49%, 11/19/98           3,970,110
                                                                 --------------
COMMUNICATIONS SERVICES--1.1%
               2,200,000   U S WEST Communications
                              Group, 5.50%, 11/18/98                 2,183,867
                                                                 --------------
CREDIT CARD & TRADE
RECEIVABLES--19.1%
               1,499,000   Charta Corporation, 5.67%,
                              10/14/98 (Acquired 9/23/98,
                              Cost $1,494,042)(2)                    1,495,931
               7,400,000   Corporate Receivables Corp.,
                              5.52%-5.54%,
                              10/27/98-10/29/98
                              (Acquired 8/21/98-8/25/98,
                              Cost $7,323,921)(2)                    7,368,960
               8,100,000   Dakota Certificates (Citibank),
                              5.42%-5.80%,
                              10/1/98-12/11/98 (Acquired
                              8/4/98-9/30/98, Cost
                              $8,031,708)(2)                         8,057,537
               8,746,000   Falcon Asset Securities Corp.,
                              5.46%-5.55%,
                              10/1/98-11/12/98 (Acquired
                              8/7/98-9/17/98, Cost
                              $8,658,283)(2)                         8,710,333
               2,908,000   Receivables Capital Corp.,
                              5.53%-5.56%,
                              10/14/98-10/22/98, (LOC:
                              Bank of America N.T. & S.A.)
                              (Acquired 9/4/98-9/23/98,
                              Cost $2,893,796)(2)                    2,899,451
               9,800,000   WCP Funding Inc., 5.49%-5.53%,
                              10/6/98-11/24/98 (Acquired
                              7/23/98-9/10/98, Cost
                              $9,689,145)(2)                         9,761,674
                                                                 --------------
                                                                    38,293,886
                                                                 --------------

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
ENERGY (PRODUCTION &
MARKETING)--6.6%
              $3,600,000   Chevron Transport Corp.,
                              5.43%-5.52%,
                              11/3/98-12/14/98                    $  3,570,801
               2,000,000   Chevron Transport Corp., 5.48%,
                              12/18/98 (Acquired 8/20/98,
                              Cost $1,963,467)(2)                    1,976,253
               3,900,000   Petroleo Brasileiro S/A, 5.50%,
                              11/25/98                               3,867,229
               2,700,000   Statoil-Den Norske Stats, 5.50%,
                              10/28/98                               2,688,863
               1,200,000   Statoil-Den Norske Stats, 5.45%,
                              11/18/98 (Acquired 9/18/98,
                              Cost $1,188,918)(2)                    1,191,280
                                                                 --------------
                                                                    13,294,426
                                                                 --------------
FINANCIAL SERVICES--18.2%
               3,200,000   Countrywide Home Loans, Inc.,
                              5.40%, 11/12/98                        3,179,840
               3,000,000   Countrywide Home Loans, Inc.,
                              5.53%, 10/26/98 (Acquired
                              9/3/98, Cost $2,975,576)(2)            2,988,479
               4,000,000   Ford Motor Credit Co., 5.50%,
                              11/6/98                                3,978,000
               3,000,000   Ford Motor Credit Co. Puerto Rico,
                              Inc., 5.52%, 10/2/98                   2,999,540
               4,500,000   General Electric Capital Corp.,
                              5.48%-5.51%,
                              11/19/98-11/20/98                      4,465,973
               4,000,000   General Electric Financial
                              Assurance Holdings, 5.52%,
                              11/2/98                                3,980,373
               3,000,000   General Motors Acceptance Corp.,
                              5.50%, 11/17/98                        2,978,458
               2,000,000   Merrill Lynch & Co., Inc., 5.51%,
                              2/26/99                                1,954,778
               6,500,000   Morgan Stanley Dean Witter,
                              Discover & Co., 5.27%-5.50%,
                              11/16/98-2/26/99                       6,417,725
               2,300,000   National Rural Utilities Cooperative
                              Finance Corp., 5.50%, 11/9/98          2,286,296
               1,300,000   Yamaha Motor Finance Corp.,
                              5.53%, 10/28/98                        1,294,608
                                                                 --------------
                                                                    36,524,070
                                                                 --------------
INDUSTRIAL--3.2%
               6,500,000   Siebe plc, 5.52%,
                              10/2/98-10/8/98 (Acquired
                              7/7/98-7/20/98, Cost
                              $6,414,440)(2)                         6,495,784
                                                                 --------------
INSURANCE--9.4%
               3,000,000   American Family Financial
                              Services, Inc., 5.52%, 10/13/98        2,994,480
               1,374,000   General Re Corp., 5.55%,
                              10/27/98                               1,368,493

                                              See Notes to Financial Statements


12      1-800-345-2021


Premium Capital Reserve--Sched. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
SEPTEMBER 30, 1998 (UNAUDITED)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
              $1,500,000   Marsh & McLennan Companies,
                              Inc., 5.49%, 11/5/98                $  1,491,994
               2,500,000   Marsh & McLennan Companies,
                              Inc., 5.45%, 2/26/99 (Acquired
                              8/27/98, Cost $2,430,740)(2)           2,443,986
               4,000,000   Prudential Funding Corp., 5.54%,
                              10/8/98                                3,995,691
               6,500,000   SAFECO Corporation,
                              5.45%-5.53%,
                              10/5/98-11/10/98 (Acquired
                              8/10/98-9/29/98, Cost
                              $6,454,565)(2)                         6,480,360
                                                                 --------------
                                                                    18,775,004
                                                                 --------------
METALS & MINING--2.9%
               5,900,000   Rio Tinto America Inc.,
                              5.50%-5.52%,
                              10/7/98-10/9/98 (Acquired
                              7/10/98-9/3/98, Cost
                              $5,835,931)(2)                         5,893,972
                                                                 --------------
PRINTING & PUBLISHING--1.6%
               3,200,000   Reed Elsevier Inc., 5.50%,
                              10/19/98 (Acquired 7/17/98,
                              Cost $3,154,044)(2)                    3,191,200
                                                                 --------------
RUBBER & PLASTICS--1.4%
               2,750,000   Formosa Plastics Corp. USA,
                              5.36%-5.45%,
                              12/16/98-2/12/99                       2,701,506
                                                                 --------------
TOTAL COMMERCIAL PAPER--70.5%                                      141,245,495
                                                                 --------------
CORPORATE DEBT
BANKING--9.7%
               7,000,000      American Express Centurion Bank, VRN, 5.53%-5.57%,
                              10/13/98-10/21/98,  resets monthly off the 1-month
                              LIBOR
                              minus 0.06% with no caps               7,000,000
               8,000,000   KeyBank N.A., VRN, 5.51%,
                              10/1/98, resets daily off the
                              Federal Funds rate plus 0.07%
                              with no caps                           7,999,320
               1,500,000   KeyBank N.A., VRN, 5.55%,
                              10/23/98, resets monthly off
                              the 1-month LIBOR minus
                              0.045% with no caps                    1,499,784
               3,000,000   U.S. Bank NA Minnesota, VRN,
                              5.57%, 10/8/98, resets
                              monthly off the 1-month LIBOR
                              minus 0.06% with no caps               2,999,399
                                                                 --------------
                                                                    19,498,503
                                                                 --------------

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
FINANCIAL SERVICES--1.2%
             $   358,000   Merrill Lynch & Co., Inc. MTN,
                              Series B, VRN, 5.82%,
                              10/1/98, resets daily off the
                              Federal Funds rate plus 0.375%
                              with no caps                         $   358,042
               2,000,000   Merrill Lynch & Co., Inc. MTN,
                              Series B, VRN, 5.84%,
                              10/5/98, resets quarterly off
                              the 3-month LIBOR plus 0.15%
                              with no caps                           2,002,121
                                                                 --------------
                                                                     2,360,163
                                                                 --------------
INSURANCE--6.8%
               6,000,000   General American Life Insurance 
                              Company, VRN, 5.85%, 10/1/98, 
                              resets monthly off the 1-month
                              LIBOR plus 0.20% with no caps 
                              (Acquired 1/3/97-7/7/97, Cost
                              $6,000,000)(2)                         6,000,000
               3,000,000   Jackson National Life Insurance Co.,
                              VRN, 5.82%, 10/13/98, resets 
                              monthly off the 1-month LIBOR
                              plus 0.19% with no caps 
                              (Acquired 6/10/98, Cost
                              $3,000,000)(2)                         3,000,000
               4,600,000   Travelers Insurance Company (The), VRN,
                              5.63%-5.67%, 10/9/98-10/22/98, 
                              resets monthly off the 1-month 
                              LIBOR plus 0.04% with no caps
                              (Acquired 5/22/98-6/8/98,
                              Cost $4,600,000)(2)                    4,600,000
                                                                 --------------
                                                                    13,600,000
                                                                 --------------
TOTAL CORPORATE DEBT--17.7%                                         35,458,666
                                                                 --------------
ASSET-BACKED SECURITIES
               2,446,127   Americredit Automobile Receivables 
                              Trust, Series 1998 B, Class A1
                              SEQ, 5.63%, 6/12/99                    2,446,128
               1,864,878   Americredit Automobile Receivables
                              Trust, Series 1998 C, Class A1 
                              SEQ, 5.64%, 9/12/99                    1,864,878
               3,130,463   Caterpillar Financial Asset Trust,
                              Series 1998 A, Class A1 SEQ,
                              5.64%, 7/26/99                         3,130,461
                 651,016   Chase Manhattan Auto Owner
                              Trust, Series 1998 B, Class A1
                              SEQ, 5.58%, 5/10/99                      651,016
               3,517,042   Contimortgage Home Equity Loan
                              Trust, Series 1998-2, Class A1
                              SEQ, 5.65%, 6/15/99                    3,517,042

See Notes to Financial Statements


                                                 www.americancentury.com      13


Premium Capital Reserve--Sched. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
SEPTEMBER 30, 1998 (UNAUDITED)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
              $  644,256   Ford Credit Auto Owner Trust,
                              Series 1998 A, Class A1 SEQ,
                              5.55%, 2/15/99                       $   644,256
               1,346,868   Ford Credit Auto Owner Trust,
                              Series 1998 C, Class A1 SEQ,
                              5.61%, 1/15/99                         1,346,868
                                                                 --------------
TOTAL ASSET-BACKED SECURITIES--6.8%                                 13,600,649
                                                                 --------------

CERTIFICATES OF DEPOSIT
               4,000,000   Bayerische Landesbank
                              Girozentrale (New York Branch),
                              5.66%, 2/22/99                         4,000,000
               3,000,000   Deutsche Bank AG, 5.70%,
                              3/5/99                                 2,999,390
                                                                 --------------
TOTAL CERTIFICATES OF DEPOSIT--3.5%                                  6,999,390
                                                                 --------------

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
BANK NOTES--1.5%
              $3,000,000   BankBoston Corp., 5.60%,
                              12/31/98                            $  3,000,000
                                                                 --------------
TOTAL INVESTMENT SECURITIES--100.0%                               $200,304,200
                                                                 ==============

NOTES TO SCHEDULE OF INVESTMENTS

LIBOR = London Interbank Offered Rate

LOC = Letter of Credit

MTN = Medium Term Note

VRN =  Variable  Rate  Note.  Interest  reset  date  is  indicated  and  used in
calculating the weighted  average  portfolio  maturity.  Rate shown is effective
September 30, 1998.

resets = The frequency with which a security's coupon changes,  based on current
market conditions or an underlying index. The more frequently a security resets,
the less risk the  investor is taking  that the coupon  will vary  significantly
from current market rates.

(1)  The rates for commercial paper are the yield to maturity at purchase.

(2)  Security was  purchased  under Rule 144A or Section 4(2) of the  Securities
     Act of 1933 or is a private  placement and, unless registered under the Act
     or exempted from registration,  may only be sold to qualified institutional
     investors.  The aggregate value of these  securities at September  30,1998,
     was  $84,549,374,   which  represented  39.7%  of  net  assets.  Restricted
     securities which were considered illiquid represented 3.6% of net assets.

- --------------------------------------------------------------------------------
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 amortized cost of each investment

* the percent and dollar breakdown of each investment category

                                              See Notes to Financial Statements


14      1-800-345-2021


Statements of Assets and Liabilities
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998 (UNAUDITED)
                                                  PREMIUM           PREMIUM
                                                 GOVERNMENT         CAPITAL
                                                  RESERVE           RESERVE
ASSETS
Investment securities, at value
  (amortized cost and cost for
  federal income tax purposes) .......     $    73,207,517      $   200,304,200
Cash .................................           2,406,670           14,276,198
Interest receivable ..................             524,950              562,135
                                           ---------------      ---------------
                                                76,139,137          215,142,533
                                           ---------------      ---------------
LIABILITIES
Disbursements in excess of
  demand deposit cash ................               1,565              359,892
Payable for capital shares
  redeemed ...........................              27,953            1,455,338
Accrued management fees
  (Note 2) ...........................              26,755               79,531
Dividends payable ....................              50,542              140,505
Accrued expenses and
  other liabilities ..................                  40                  179
                                           ---------------      ---------------
                                                   106,855            2,035,445
                                           ---------------      ---------------
Net Assets ...........................     $    76,032,282      $   213,107,088
                                           ===============      ===============
CAPITAL SHARES,
$0.01 PAR VALUE
Authorized ...........................       1,000,000,000        1,000,000,000
                                           ===============      ===============
Outstanding ..........................          76,032,668          213,112,124
                                           ===============      ===============
Net Asset Value Per Share ............     $          1.00      $          1.00
                                           ===============      ===============
NET ASSETS CONSIST OF:
Capital (par value and
  paid-in surplus) ...................     $    76,032,668      $   213,112,124
Accumulated net realized
  loss on investments ................                (386)              (5,036)
                                           ---------------      ---------------
                                           $    76,032,282      $   213,107,088
                                           ===============      ===============

- --------------------------------------------------------------------------------
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.  The net assets divided by the total number
of fund 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);  and
net gains earned on investments  but not yet paid to  shareholders or net losses
on investments (known as realized gains or losses).  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


                                                 www.americancentury.com      15


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

                                                    PREMIUM          PREMIUM
FOR THE SIX MONTHS ENDED                           GOVERNMENT        CAPITAL
SEPTEMBER 30, 1998 (UNAUDITED)                      RESERVE          RESERVE

INVESTMENT INCOME
Income:
Interest ..................................       $ 1,645,278       $ 5,437,927
                                                  -----------       -----------
Expenses (Note 2):
Management fees ...........................           133,136           432,039
Directors' fees and expenses ..............               230               745
                                                  -----------       -----------
                                                      133,366           432,784
                                                  -----------       -----------
Net investment income .....................         1,511,912         5,005,143
                                                  -----------       -----------
Net realized loss on investments ..........              --                (662)
                                                  -----------       -----------
Net Increase in Net Assets
  Resulting from Operations ...............       $ 1,511,912       $ 5,004,481
                                                  ===========       ===========

- --------------------------------------------------------------------------------
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)

                                              See Notes to Financial Statements


16   1-800-345-2021


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

<TABLE>
<CAPTION>
SIX MONTHS ENDED SEPTEMBER 30, 1998 (UNAUDITED) AND YEAR ENDED MARCH 31, 1998

                                           PREMIUM GOVERNMENT RESERVE         PREMIUM CAPITAL RESERVE
                                          SEPTEMBER 30,      MARCH 31,      SEPTEMBER 30,     MARCH 31,
Increase in Net Assets                        1998             1998             1998             1998

OPERATIONS
<S>                                      <C>              <C>              <C>              <C>          
Net investment income ................   $   1,511,912    $   2,319,208    $   5,005,143    $   8,912,910
Net realized loss on investments .....            --               (380)            (662)          (3,329)
                                         -------------    -------------    -------------    -------------
Net increase in net assets
   resulting from operations .........       1,511,912        2,318,828        5,004,481        8,909,581
                                         -------------    -------------    -------------    -------------
DISTRIBUTIONS TO
SHAREHOLDERS
From net investment income ...........      (1,511,912)      (2,319,208)      (5,005,143)      (8,912,910)
                                         -------------    -------------    -------------    -------------
CAPITAL SHARE TRANSACTIONS
Proceeds from shares sold ............     157,779,359      115,269,165      225,537,843      380,763,052
Proceeds from reinvestment
  of distributions ...................       1,460,591        2,261,393        4,763,974        8,514,911
Payments for shares redeemed .........    (127,702,366)    (111,873,462)    (199,680,757)    (360,745,777)
                                         -------------    -------------    -------------    -------------
Net increase in net assets
  from capital share transactions ....      31,537,584        5,657,096       30,621,060       28,532,186
                                         -------------    -------------    -------------    -------------
Net increase in net assets ...........      31,537,584        5,656,716       30,620,398       28,528,857

NET ASSETS
Beginning of period ..................      44,494,704       38,837,988      182,486,690      153,957,833
                                         -------------    -------------    -------------    -------------
End of period ........................   $  76,032,288    $  44,494,704    $ 213,107,088    $ 182,486,690
                                         =============    =============    =============    =============
TRANSACTIONS IN SHARES
OF THE FUNDS
Sold .................................     157,779,359      115,269,165      225,537,843      380,763,071
Issued in reinvestment
  of distributions ...................       1,460,591        2,261,393        4,763,974        8,514,911
Redeemed .............................    (127,702,366)    (111,873,462)    (199,680,757)    (360,745,777)
                                         -------------    -------------    -------------    -------------
Net increase .........................      31,537,584        5,657,096       30,621,060       28,532,205
                                         =============    =============    =============    =============
</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


                                                 www.americancentury.com      17


Notes to Financial Statements
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998 (UNAUDITED)

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     ORGANIZATION--American  Century Premium Reserves, Inc. (the Corporation) is
registered under the Investment  Company Act of 1940 as an open-end  diversified
management  investment  company.  American  Century - Benham Premium  Government
Reserve Fund (Government  Reserve) and American Century - Benham Premium Capital
Reserve Fund (Capital  Reserve) (the Funds) are two of the three funds issued by
the  Corporation.  The  investment  objective of Government  Reserve and Capital
Reserve is to obtain as high a level of  current  income as is  consistent  with
preservation of capital and maintenance of liquidity.  The following significant
accounting  policies  are  in  accordance  with  generally  accepted  accounting
principles.

     SECURITY   VALUATIONS--Securities  are  valued  at  amortized  cost,  which
approximates   current  value.  When  valuations  are  not  readily   available,
securities are valued at fair value as determined in accordance  with procedures
adopted by the Board of Directors.

     SECURITY  TRANSACTIONS--Security  transactions  are accounted for as of the
trade date. Net realized gains and losses are determined on the identified  cost
basis, which is also used for federal income tax purposes.

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

     REPURCHASE  AGREEMENTS--The Funds may enter into repurchase agreements with
institutions that the Funds'  investment  manager,  American Century  Investment
Management,  Inc. (ACIM),  has determined are creditworthy  pursuant to criteria
adopted by the Board of  Directors.  Each  repurchase  agreement  is recorded at
cost. The Funds require that the collateral, represented by securities, received
in a  repurchase  transaction  be  transferred  to  the  custodian  in a  manner
sufficient  to enable  the Funds to obtain  those  securities  in the event of a
default under the repurchase  agreement.  ACIM monitors,  on a daily basis,  the
securities  transferred to ensure the value,  including accrued interest, of the
securities  under each repurchase  agreement is equal to or greater than amounts
owed to the Funds under each repurchase agreement.

     JOINT  TRADING  ACCOUNT--Pursuant  to an  Exemptive  Order  issued  by  the
Securities  and  Exchange  Commission,  the Funds,  along with other  registered
investment  companies  having  management  agreements  with ACIM,  may  transfer
uninvested  cash  balances  into a joint  trading  account  held  at the  Funds'
custodian. These balances are invested in one or more repurchase agreements that
are collateralized by U.S. Treasury or Agency obligations.

     INCOME TAX STATUS--It is the 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 are
declared daily and distributed  monthly.  The Funds do not expect to realize any
long-term  capital  gains and,  accordingly  do not expect to pay any  long-term
capital gains distributions.

     At March  31,  1998,  accumulated  net  realized  short-term  capital  loss
carryovers  of $2,814 for Capital  Reserve  (expiring  2004 through 2006) may be
used to offset future taxable gains. The Fund has elected to treat $1,560 of net
capital losses incurred in the five month period ended March 31, 1998, as having
been incurred in the following fiscal year.

     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.

     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 Corporation's
distributor. Certain officers of FDI are also officers of the Corporation.


18      1-800-345-2021


Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)
SEPTEMBER 30, 1998 (UNAUDITED)
- --------------------------------------------------------------------------------
2. TRANSACTIONS WITH RELATED PARTIES

     The  Corporation  has entered  into a Management  Agreement  with ACIM that
provides the Funds with investment  advisory and management services in exchange
for a single,  unified  fee.  The  Agreement  provides  that all expenses of the
Funds,  except  brokerage  commissions,   taxes,  interest,  expenses  of  those
directors  who  are  not  considered  "interested  persons"  as  defined  in the
Investment  Company  Act of 1940  (including  counsel  fees)  and  extraordinary
expenses, will be paid by ACIM. The fee is computed daily and paid monthly based
on each Fund's average daily closing net assets during the previous  month.  The
annual management fee for each Fund is 0.45%.

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


                                                 www.americancentury.com      19


Premium Gov't. Reserve--Financial Highlights
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
  FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED MARCH 31 (EXCEPT AS NOTED)

                                         1998(1)              1998           1997           1996           1995           1994
PER-SHARE DATA
Net Asset Value,
<S>                                   <C>               <C>            <C>            <C>            <C>            <C>       
Beginning of Period ...............   $     1.00        $     1.00     $     1.00     $     1.00     $     1.00     $     1.00
                                      ----------        ----------     ----------     ----------     ----------     ----------
Income From Investment
  Operations
  Net Investment Income ...........         0.03              0.05           0.05           0.05           0.05           0.03
                                      ----------        ----------     ----------     ----------     ----------     ----------
Distributions
  From Net Investment
  Income ..........................        (0.03)            (0.05)         (0.05)         (0.05)         (0.05)         (0.03)
                                      ----------        ----------     ----------     ----------     ----------     ----------
Net Asset Value,
End of Period .....................   $     1.00        $     1.00     $     1.00     $     1.00     $     1.00     $     1.00
                                      ==========        ==========     ==========     ==========     ==========     ==========
  Total Return(2) .................         2.59%             5.25%          5.07%          5.49%          4.62%          2.75%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets .............         0.45%(3)          0.45%          0.45%          0.44%          0.45%          0.45%
Ratio of Net Investment Income
to Average Net Assets .............         5.11%(3)          5.13%          4.96%          5.30%          4.84%          2.72%
Net Assets, End of Period
(in thousands) ....................   $   76,032        $   44,495     $   38,838     $   26,191     $   16,381     $    5,459
</TABLE>

(1)  Six months ended September 30, 1998 (unaudited).

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

(3)  Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL  HIGHLIGHTS--This  statement itemizes current period
activity and  statistics  and provide  comparison  data for the last five fiscal
years.

On a per-share basis, it includes:

* share price at the beginning of the period

* investment income

* income 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

                                              See Notes to Financial Statements


20      1-800-345-2021


Premium Capital Reserve--Financial Highlights
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
  FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED MARCH 31 (EXCEPT AS NOTED)

                                     1998(1)               1998            1997            1996            1995            1994
PER-SHARE DATA
Net Asset Value,
<S>                              <C>                <C>             <C>             <C>             <C>             <C>        
Beginning of Period ..........   $      1.00        $      1.00     $      1.00     $      1.00     $      1.00     $      1.00
                                 -----------        -----------     -----------     -----------     -----------     -----------
Income From Investment
  Operations
  Net Investment Income ......          0.03               0.05            0.05            0.05            0.05            0.03
                                 -----------        -----------     -----------     -----------     -----------     -----------
Distributions
  From Net Investment
  Income .....................         (0.03)             (0.05)          (0.05)          (0.05)          (0.05)          (0.03)
                                 -----------        -----------     -----------     -----------     -----------     -----------
Net Asset Value,
End of Period ................   $      1.00        $      1.00     $      1.00     $      1.00     $      1.00     $      1.00
                                 ===========        ===========     ===========     ===========     ===========     ===========
  Total Return(2) ............          2.64%              5.38%           5.13%           5.58%           4.66%           2.81%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ........          0.45%(3)           0.45%           0.45%           0.45%           0.45%           0.45%
Ratio of Net Investment Income
to Average Net Assets ........          5.21%(3)           5.26%           5.01%           5.50%           4.76%           2.83%
Net Assets, End of Period
(in thousands) ...............   $   213,107        $   182,487     $   153,958     $   133,417     $   138,428     $    38,823
</TABLE>

(1)  Six months ended September 30, 1998 (unaudited).

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

(3)  Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL  HIGHLIGHTS--This  statement itemizes current period
activity and  statistics  and provide  comparison  data for the last five fiscal
years.

On a per-share basis, it includes:

* share price at the beginning of the period

* investment income

* income 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

See Notes to Financial Statements


                                                 www.americancentury.com      21


Retirement Account Information
- --------------------------------------------------------------------------------

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.


22      1-800-345-2021


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:

     PREMIUM  GOVERNMENT  RESERVE and PREMIUM  CAPITAL  RESERVE  seek to provide
interest  income while  maintaining  a stable share  price.  Premium  Government
Reserve  invests in U.S.  government  money  market  securities,  while  Premium
Capital Reserve invests in a diversified portfolio of money market securities.

     An investment in the funds is neither insured nor guaranteed by the FDIC or
any other government agency. Yields will fluctuate,  and although the funds seek
to preserve the value of your investment at $1 per share, it is possible to lose
money by investing in the funds.

COMPARATIVE INDICES

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

     The 90-DAY  TREASURY BILL INDEX is derived from secondary  market  interest
rates as published by the Federal Reserve Bank.

LIPPER RANKINGS

     LIPPER  ANALYTICAL  SERVICES,  INC. is an  independent  mutual fund ranking
service that groups funds according to their investment objectives. Rankings are
based on  average  annual  returns  for each  fund in a given  category  for the
periods indicated. Rankings are not included for periods less than one year.

     The Lipper categories for the Premium Reserve Money Market funds are:

     INSTITUTIONAL  U.S.  GOVERNMENT  MONEY  MARKET  FUNDS  (Premium  Government
Reserve)--funds  with  dollar-weighted  average  maturities of less than 90 days
that intend to maintain a stable net asset value and that invest  principally in
financial instruments issued or guaranteed by the U.S. government,  its agencies
or instrumentalities.

     INSTITUTIONAL  MONEY MARKET FUNDS  (Premium  Capital  Reserve)--funds  with
dollar-weighted  average maturities of less than 90 days that intend to maintain
a stable net asset value and that invest in high-quality  financial  instruments
rated in the top two grades.

CREDIT RATING GUIDELINES

     Credit  ratings  are  issued  by  independent  research  companies  such as
Standard  & Poor's  and  Moody's.  Ratings  are based on an  issuer's  financial
strength and ability to pay interest and principal in a timely manner.

     A-1+ and A-1 are Standard & Poor's highest ratings for commercial paper.

     It's important to note that credit ratings are  subjective,  reflecting the
opinions of the rating agencies; they are not absolute standards of quality.

[right margin]

INVESTMENT TEAM LEADERS

PORTFOLIO MANAGERS
     AMY O'DONNELL
     DENISE TABACCO
     JOHN WALSH

CORPORATE CREDIT RESEARCH MANAGER
     GREG AFIESH


                                                 www.americancentury.com      23


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

RETURNS

* TOTAL  RETURN  figures  show the overall  percentage  change in the value of a
hypothetical  investment  in  the  fund  and  assume  that  all  of  the  fund's
distributions are reinvested.

* AVERAGE ANNUAL RETURNS  illustrate the annually  compounded returns that would
have produced the fund's cumulative total returns if the fund's  performance had
been  constant  over the  entire  period.  Average  annual  returns  smooth  out
variations in the 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 20-21.

YIELDS

* 7-DAY  CURRENT  YIELD  is  calculated  based  on the  income  generated  by an
investment  in the fund over a seven-day  period and is  expressed  as an annual
percentage rate.

* 7-DAY  EFFECTIVE  YIELD is  calculated  similarly,  although  this  figure  is
slightly  higher than the fund's 7-Day  Current  Yield because of the effects of
compounding.  The 7-Day  Effective  Yield  assumes  that income  earned from the
fund's investments is reinvested and generating additional income.

PORTFOLIO STATISTICS

* NUMBER OF SECURITIES--the number of different securities held by the fund on a
given 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.  The
longer the WAM, the more interest rate  exposure and  sensitivity  the portfolio
has.

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

TYPES OF MONEY MARKET SECURITIES

* ASSET-BACKED SECURITIES--debt securities that represent ownership in a pool of
receivables, such as credit card debt, auto loans or mortgages.

*  CERTIFICATES  OF DEPOSIT  (CDS)--CDs  represent a bank's  obligation to repay
money deposited with it for a specified period of time.

* COMMERCIAL PAPER  (CP)--short-term  debt issued by large corporations to raise
cash and to cover current expenses in anticipation of future revenues.

* REPURCHASE AGREEMENTS (REPOS)--short-term debt agreements in which a fund buys
a security at one price and simultaneously  agrees to sell it back to the seller
at a slightly higher price on a specified date (usually within seven days).

* U.S. GOVERNMENT AGENCY NOTES--intermediate-term debt securities issued by U.S.
government agencies (such as the Federal Home Loan Bank). These notes are issued
with maturities ranging from three months to 30 years, but the funds only invest
in those with remaining maturities of 13 months or less.

* U.S.  GOVERNMENT AGENCY DISCOUNT  NOTES--short-term  debt securities issued by
U.S.  government  agencies (such as the Federal Home Loan Bank). These notes are
issued at a discount and achieve full value at maturity  (typically  one year or
less).

* VARIABLE-RATE NOTES (VRNS)--debt securities whose interest rates change when a
designated base rate changes. The base rate is often the federal funds rate, the
90-day Treasury bill rate or the London Interbank Offered Rate.


24      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
   Intermediate-Term Bond
   Bond
   Premium Bond
   High-Yield Bond
International
   International Bond

TAX-FREE & MUNICIPAL BOND FUNDS
Multiple-State
   Limited-Term Tax-Free
   Intermediate-Term Tax-Free
   Long-Term Tax-Free
   High-Yield Municipal
Single-State
   Arizona Intermediate-Term Municipal
   California High-Yield Municipal
   California Insured Tax-Free
   California Intermediate-Term Tax-Free
   California Limited-Term Tax-Free
   California Long-Term Tax-Free
   Florida Intermediate-Term Municipal

MONEY MARKET FUNDS
Taxable
   Capital Preservation
   Government Agency Money Market
   Premium Capital Reserve
   Premium Government Reserve
   Prime Money Market
Tax-Free & Municipal
   California Municipal Money Market
   California Tax-Free Money Market
   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
   Global Natural Resources
   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:
1-800-345-8765

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

FAX: 816-340-7962

INTERNET: WWW.AMERICANCENTURY.COM


AMERICAN CENTURY PREMIUM RESERVES, INC.


INVESTMENT MANAGER
AMERICAN CENTURY INVESTMENT MANAGEMENT, INC.
KANSAS CITY, MISSOURI

THIS  REPORT AND THE  STATEMENTS  IT  CONTAINS  ARE  SUBMITTED  FOR THE  GENERAL
INFORMATION OF OUR  SHAREHOLDERS.  THE REPORT IS NOT AUTHORIZED FOR DISTRIBUTION
TO  PROSPECTIVE  INVESTORS  UNLESS  PRECEDED  OR  ACCOMPANIED  BY  AN  EFFECTIVE
PROSPECTUS.

(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-14214                                            Funds Distributor, Inc.
<PAGE>
[front cover]                                                 September 30, 1998

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

                               [graphic of stairs]

BENHAM GROUP
- ------------------------------------
PREMIUM BOND

                                                 [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
PREMIUM BOND
(ACBPX)

[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 six  months  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 in September, the first rate
cut in almost three years. Two weeks later, it lowered the rate again, providing
a significant  psychological  boost to investors as well as to the U.S. economy.
But by the time the Federal Reserve reacted,  falling  interest rates,  combined
with increased demand for the relative safety of U.S. Treasury  securities,  had
sparked the biggest rally in the Treasury market since 1995.

     U.S. bonds, with the exception of corporate bonds,  generally  outperformed
U.S. stocks,  which posted mostly negative returns for the period.  Money market
securities continued to be a stable investment.

     This  volatile   market   environment   illustrated  the  importance  of  a
diversified  investment  portfolio.  Allocating your assets among stocks, bonds,
and money market funds can help  weatherproof  your portfolio  against  dramatic
changes in the economic or investment climate.

     Benham Premium Bond, like most U.S. bond funds, had a positive return,  but
its  performance  was  modest  compared  with pure  Treasury  funds.  The fund's
diversified portfolio of Treasury, mortgage-backed, corporate, asset-backed, and
government  agency bonds  performs  best versus pure  Treasury  portfolios  when
interest  rates are  relatively  stable.  In a  sharply  falling  interest  rate
environment, Treasurys tend to outperform other types of bonds. The Premium Bond
fund investment team worked hard to find attractive yields and good buys in this
low interest rate environment.

     On the corporate  front,  we have a substantial  effort underway to prepare
American  Century's computer systems for the year 2000. Through the rest of 1998
and 1999, our team of technology  professionals will be extensively  testing our
systems, including those involved with dividend payments.

     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 .....................................................    3
PREMIUM BOND
   Performance Information ................................................    4
   Management Q&A .........................................................    5
   Portfolio at a Glance ..................................................    5
   Portfolio Composition
   by Security Type .......................................................    6
   Portfolio Composition
   by Credit Rating .......................................................    7
   Schedule of Investments ................................................    8
FINANCIAL STATEMENTS
   Statement of Assets and
   Liabilities ............................................................   12
   Statement of Operations ................................................   13
   Statements of Changes
   in Net Assets ..........................................................   14
   Notes to Financial
   Statements .............................................................   15
   Financial Highlights ...................................................   17
OTHER INFORMATION
   Retirement Account
   Information ............................................................   18
   Background Information
      Investment Philosophy
      and Policies ........................................................   19
      Comparative Indices .................................................   19
      Lipper Rankings .....................................................   19
      Credit Rating
      Guidelines ..........................................................   19
      Investment Team
      Leaders .............................................................   19
    Glossary ..............................................................   20


                                                  www.americancentury.com      1


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

MARKET PERSPECTIVE

*   One of the worst global  financial  meltdowns in recent history provided the
    framework for a sharp decline in interest  rates during the six months ended
    September 30, 1998.

*   In the U.S.,  investors'  fears of  inflation  in early  spring  turned into
    concern over the  possibility of recession by late summer amid  intensifying
    global turmoil.

*   Hoping to add stability to worldwide markets and dampen the liquidity crisis
    that seemed to be quickly  spreading  across the globe,  the Federal Reserve
    lowered short-term interest rates in September--the  first rate reduction in
    nearly three years--and again in October.

*   With global economic  uncertainty  foremost in investors'  minds, the safety
    and liquidity of U.S. Treasury securities took on added appeal.

*   Although Treasury securities posted strong returns for the period, corporate
    bond gains were much more modest.

*   Mortgage-backed security returns were also comparatively disappointing.

MANAGEMENT Q&A

*   Premium  Bond's   performance   reflected  the  diversified  nature  of  its
    portfolio--Treasury  securities  performed  extremely  well, but those gains
    were kept in check by the  comparatively  lower  returns  of  corporate  and
    mortgage-backed securities.

*   To insulate the portfolio from market volatility,  we started positioning it
    more defensively in July.

*   One of the ways we  accomplished  this was to use the  money  from  maturing
    securities  and  incoming  cash flows to increase the  portfolio's  Treasury
    position.

*   Another  defensive play was to reduce the portfolio's  holdings of corporate
    bonds whose underlying companies had direct exposure to overseas markets.

*   Effective  September  1, Premium Bond was allowed to invest up to 15% of its
    portfolio in BB securities.

*   Despite earlier expectations to the contrary, continued problems in
    Southeast Asia, Russia, and Latin America finally seem to be exacting  a
    toll on U.S. economic growth.

*   We will likely maintain the portfolio's current defensive stance until there
    are  further  signs that global  economic  problems  are being  successfully
    resolved.

[left margin]

"WITH GLOBAL ECONOMIC UNCERTAINTY FOREMOST IN INVESTORS' MINDS, THE SAFETY AND
LIQUIDITY OF U.S. TREASURY SECURITIES TOOK ON ADDED APPEAL."

                 PREMIUM BOND
                   (ACBPX)
TOTAL RETURNS:              AS OF 9/30/98
    6 Months                       6.30%*
    1 Year                         10.75%
NET ASSETS:                 $96.4 million
30-DAY SEC YIELD:                   5.32%
INCEPTION DATE:                    4/1/93

* Not annualized.

See Total Returns on page 4.
Investment terms are defined in the Glossary on page 20.


2      1-800-345-2021


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

SPREADING FINANCIAL CRISES...

     One of the worst global financial  meltdowns in recent history provided the
framework  for a sharp  decline in interest  rates  during the six months  ended
September  30,  1998.  Problems  in  Southeast  Asia  mushroomed  in early 1998,
spreading to Russia and Latin America.

     In the U.S.,  investors'  fears of inflation  in early  spring  turned into
concern  over the  possibility  of  recession  by late summer amid  intensifying
economic  turmoil.  A flurry of  profits  warnings  issued by many of  corporate
America's hallmark companies lent credence to that notion.

 ...AND A TREASURY MARKET RALLY...

     With global economic  uncertainty  foremost in investors' minds, the safety
and liquidity of U.S.  Treasury  securities took on added appeal.  The increased
demand sent Treasury prices soaring and caused their yields, which move opposite
their prices, to fall sharply (see the accompanying graph). The Salomon Brothers
Treasury Index, which broadly represents the performance of the Treasury market,
returned 12.93%.

 ...LED TO LOWER INTEREST RATES...

     Hoping to add  stability  to  worldwide  markets  and dampen the  liquidity
crisis that seemed to be spreading quickly across the globe, the Federal Reserve
lowered  short-term  interest  rates in  September--the  first rate reduction in
nearly  three  years--and  again  in  October.  The  rate  cuts  reinforced  the
lower-interest-rate trend that had gained momentum since late July.

 ...BUT ONLY MODEST RETURNS FOR CORPORATE BONDS...

     Corporate bonds lagged  Treasurys--the Lehman Brothers Corporate Bond Index
returned 5.9%. A lack of demand was partially to blame --investor  concerns that
global  turmoil would hamper U.S.  corporate  profits kept a tight lid on demand
for corporate bonds.  From the supply side, many large  international  investors
and hedge funds were forced to hastily sell  corporates  to cover  market-timing
bets that had gone awry.

 ...AND MORTGAGE-BACKED SECURITIES.

     Mortgage-backed security returns were also comparatively disappointing--the
Lehman Brothers  Fixed-Rate  Mortgage-Backed  Securities Index returned 4.5%. In
addition  to some of the  same  supply  problems  that  faced  corporate  bonds,
mortgage-backeds  were also hit hard by the  decade's  third  major  refinancing
wave.  Mortgage  refinancings  are undesirable  because they shorten the life of
mortgage-backed  securities  and cause  investors to reinvest in  lower-yielding
securities, dampening returns.

[right margin]

"IN THE U.S., INVESTORS' FEARS OF INFLATION IN EARLY SPRING TURNED INTO CONCERN
OVER THE POSSIBILITY OF RECESSION BY LATE SUMMER AMID INTENSIFYING ECONOMIC
TURMOIL."

[line chart - data below]

TREASURY YIELD CURVES

Years to Maturity         3/31/98            9/30/98
1                          5.34%              4.39%
2                          5.52%              4.26%
3                          5.53%              4.38%
4                          5.59%              4.35%
5                          5.55%              4.21%
6                          5.60%              4.29%
7                          5.65%              4.36%
8                          5.63%              4.38%
9                          5.60%              4.39%
10                         5.58%              4.41%
11                         5.61%              4.48%
12                         5.63%              4.55%
13                         5.66%              4.63%
14                         5.68%              4.70%
15                         5.71%              4.77%
16                         5.76%              4.84%
17                         5.80%              4.91%
18                         5.85%              4.99%
19                         5.89%              5.06%
20                         5.94%              5.13%
21                         5.93%              5.11%
22                         5.92%              5.10%
23                         5.92%              5.08%
24                         5.91%              5.07%
25                         5.90%              5.05%
26                         5.89%              5.03%
27                         5.89%              5.02%
28                         5.88%              5.00%
29                         5.88%              4.99%
30                         5.87%              4.97%

Source: Bloomberg Financial Markets


                                                  www.americancentury.com      3


Premium Bond--Performance
- --------------------------------------------------------------------------------
TOTAL RETURNS AS OF SEPTEMBER 30, 1998
<TABLE>
<CAPTION>
                                              INCEPTION 4/1/93
                        PREMIUM   LEHMAN AGGREGATE   A-RATED CORPORATE DEBT FUNDS(2)
                          BOND       BOND INDEX     AVERAGE RETURN    FUND'S RANKING
- ---------------------------------------------------------------------------------------
<S>                     <C>            <C>           <C>              <C>                  
6 MONTHS(1) ............  6.30%         6.66%            6.00%              --
1 YEAR ................. 10.75%        11.51%           10.40%         54 OUT OF 149
- ---------------------------------------------------------------------------------------
AVERAGE ANNUAL RETURNS
3 YEARS ................  8.15%         8.67%            7.99%         44 OUT OF 122
5 YEARS ................  6.79%         7.21%            6.54%         21 OUT OF 71
LIFE OF FUND ...........  7.03%         7.55%           7.18%(3)       32 OUT OF 64(3)
</TABLE>

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

(2)  According to Lipper Analytical Services, an independent mutual fund ranking
     service.

(3)  Since 4/30/93,  the date nearest the fund's inception for which return data
     are available.

See pages 19-20 for more information about returns,  the comparative  index, and
Lipper fund rankings.

[mountain chart - data below]

GROWTH OF $10,000 OVER LIFE OF FUND

Value on 9/30/98
Lehman Aggregate Bond Index    $14,921
Premium Bond                   $14,526

                                Lehman Aggregate
               Premium Bond        Bond Index
DATE              VALUE              VALUE
4/1/93           $10,000            $10,000
6/30/93          $10,187            $10,265
9/30/93          $10,462            $10,533
12/31/93         $10,454            $10,539
3/31/94          $10,091            $10,237
6/30/94          $9,954             $10,131
9/30/94          $10,002            $10,193
12/31/94         $10,024            $10,232
3/31/95          $10,543            $10,748
6/30/95          $11,262            $11,402
9/30/95          $11,481            $11,626
12/31/95         $12,038            $12,121
3/31/96          $11,757            $11,906
6/30/96          $11,785            $11,974
9/30/96          $11,997            $12,196
12/31/96         $12,368            $12,562
3/31/97          $12,295            $12,491
6/30/97          $12,703            $12,950
9/30/97          $13,117            $13,380
12/31/97         $13,464            $13,773
3/31/98          $13,666            $13,988
6/30/98          $13,964            $14,315
9/30/98          $14,526            $14,921

$10,000 investment made 4/1/93

The chart at left shows the growth of a $10,000  investment over the life of the
fund,  while the chart  below  shows the fund's  year-by-year  performance.  The
Lehman  Aggregate Bond Index is provided for  comparison in each chart.  Premium
Bond's  returns  include  operating  expenses  (such as  transaction  costs  and
management  fees) that  reduce  returns,  while the returns of the index do not.
Past  performance  does not  guarantee  future  results.  Investment  return and
principal  value will fluctuate,  and redemption  value may be more or less than
original cost.

[bar chart - data below]

ONE-YEAR RETURNS OVER LIFE OF FUND (PERIODS ENDED SEPTEMBER 30)

                                Lehman Aggregate
               Premium Bond       Bond Index
DATE              RETURN            RETURN
9/30/93*           4.62%             5.33%
9/30/94           -4.39%            -3.22%
9/30/95           14.80%            14.06%
9/30/96            4.49%             4.90%
9/30/97            9.32%             9.71%
9/30/98           10.75%            11.51%

* From 4/1/93 (the fund's inception date) to 9/30/93.


4      1-800-345-2021


Premium Bond--Q&A
- --------------------------------------------------------------------------------
/photo of Jeff Houston/

     An interview  with Jeff  Houston,  a portfolio  manager on the Premium Bond
fund investment team.

HOW DID THE FUND PERFORM DURING THE SIX MONTHS ENDED SEPTEMBER 30?

     Premium  Bond's  performance   reflected  the  diversified  nature  of  its
portfolio.  Treasury securities  performed extremely well, but the comparatively
smaller  gains of  corporate  and  mortgage-backed  securities  weighed  on fund
returns.  The fund's total return was 6.30%,  which before expenses was slightly
below the 6.66% return of its benchmark,  the Lehman Aggregate Bond Index.  (See
Total Returns on the previous page for fund performance comparisons.)

HOW DID THE PORTFOLIO CHANGE?

     We shifted the portfolio to a more defensive stance beginning in July.

WHAT PROMPTED THIS STRATEGY SHIFT?

     Given the increasing  intensity of economic  problems  overseas,  it seemed
likely that the Federal Reserve (the Fed) would need to lower short-term  rates.
That  outlook  was  strengthened  in  August,  when  corporate  bonds and stocks
suffered sharp losses.

     The  selloff  was viewed by the Fed as  evidence  that it was time to lower
short-term interest rates to try and stem global financial turmoil.

WHAT DID YOU DO TO THE PORTFOLIO TO MAKE IT MORE DEFENSIVE?

     One way was to use the money from  maturing  securities  and incoming  cash
flows   to   increase   the   portfolio's    Treasury    position.    We   added
intermediate-maturity  Treasurys  because they stood to gain the most if the Fed
lowered  rates.  That's  because  yields of securities in this area tend to fall
more than  either  shorter- or  longer-term  securities  when the Fed  initially
lowers rates.

     By the end of September,  we had  increased the  percentage of Treasurys in
the portfolio to 33% of assets, making Treasurys the fund's largest holding (see
Portfolio Composition by Security Type on page 6).

     Another defensive play was to reduce the portfolio's  holdings of corporate
bonds whose underlying  companies had direct exposure to overseas markets.  With
economic  uncertainty  overseas  increasing,  we favored corporates that derived
most of their profits  domestically.  More specifically,  we started emphasizing
bonds of companies  that tend to provide  more stable  returns  during  economic
upheaval. Telecommunications and utility bonds are some good examples.

CORPORATE BONDS REPRESENTED THE PORTFOLIO'S SECOND LARGEST HOLDING. HOW DID THEY
FARE?

     Unlike Treasury securities,  corporate bonds suffered from a lack of demand
and an  overabundance  of supply,  causing their returns to lag.  Equity markets
began to slump after  peaking in  mid-July,  when many  bellwether  corporations
warned that their profits would suffer from troubles overseas.

     The stock market's  problems caused investors to shun corporate bonds. Keep
in mind that a company's profits warnings are nearly as much a concern to a

[right margin]

"TREASURY  SECURITIES  PERFORMED  EXTREMELY WELL, BUT THE COMPARATIVELY  SMALLER
GAINS OF CORPORATE AND MORTGAGE-BACKED SECURITIES WEIGHED ON FUND RETURNS."

PORTFOLIO AT A GLANCE
                            9/30/98          3/31/98
NUMBER OF SECURITIES          123               98
WEIGHTED AVERAGE
MATURITY                    8.8 YRS          10.7 YRS
AVERAGE DURATION            4.6 YRS           4.7 YRS
EXPENSE RATIO               0.45%*             0.45%

* Annualized.

YIELD AS OF SEPTEMBER 30, 1998

30-DAY SEC YIELD            5.32%

Investment terms are defined in the Glossary on page 20.


                                                  www.americancentury.com      5


Premium Bond--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

bond investor as to a stock investor--both are negatively affected if a business
becomes less profitable since it often causes the stocks and bonds issued by the
company to fall in price.

WHAT CAUSED THE SURGE IN CORPORATE BOND SUPPLY?

     A significant portion of the corporate debt market's supply problems can be
traced to two  factors.  The first was that a tremendous  wave of new  corporate
securities  that was issued by  companies  rushing in to take  advantage  of low
interest rates. The second was that many large international investors and hedge
funds unloaded huge amounts of securities.  Some of these  investors bet heavily
that  Treasury  yields would begin to converge with the yields of other types of
fixed-income securities.

     Unfortunately  for many of  these  investors,  their  bets  turned  sour by
August, forcing them to close their corporate positions,  locking in significant
losses.  These  funds  quickly  dumped  corporates  and  other   higher-yielding
securities  and bought  Treasurys.  This caused  demand for  Treasurys to surge,
while  unleashing a large influx of corporate and mortgage  securities back into
the market.

WHAT DID THIS DO TO THE INTEREST RATE DIFFERENCE BETWEEN TREASURYS AND CORPORATE
BONDS?

     The surge in supply helped to widen the  difference in yields even further.
The yield spread, or difference,  that corporate bonds pay over Treasurys nearly
doubled during the six months.  For instance,  in April, the difference in yield
between a 10-year, A-rated corporate industrial bond and a 10-year Treasury note
was 55 basis points (0.55%--a basis point equals 0.01%).  However, by the end of
September, that spread had widened to 110 basis points.

EFFECTIVE SEPTEMBER 1, PREMIUM BOND WAS ALLOWED TO INVEST IN SECURITIES RATED
BB. WHY THE CHANGE?

     The ability to invest in BB securities allows us greater flexibility in our
efforts  to  enhance  returns by  venturing  into an area of the  market  that's
largely overlooked.  "High-yield" investors typically focus on corporates with B
or lower credit quality.  Meanwhile, most large institutional investors focus on
BBB or higher rated securities.

     Thanks to our strong credit research team, we can carefully investigate the
spectrum of BB securities, which should give Premium Bond an advantage over many
of its  competitors.  Overall,  we believe  that the  untapped BB portion of the
market is inefficiently  priced, making it worth our while to sift through these
securities. However, when we eventually add such securities to the portfolio, we
will do so very selectively.

MORTGAGE-BACKED SECURITIES REPRESENTED THE PORTFOLIO'S THIRD-LARGEST HOLDING.
WHAT WAS BEHIND THEIR UNDERPERFORMANCE RELATIVE TO TREASURYS?

     The main reason  mortgage-backeds lagged was because of heavy refinancings.
The  sharp  drop in  interest  rates  meant a  continuance  of the  third  major
refinancing wave this decade. (The first two took place in 1993 and in 1995-96.)
Starting in July, refinancing activity increased sharply as homeowners rushed in
to take advantage of record low mortgage rates.

     As a result,  mortgage-backed  investors were faced with reinvesting  their
prepaid  proceeds in securities  that had lower yields,  hampering their returns
for the  six  months.  This  also  shortened  the  average  maturity  (or  price
sensitivity to changes in interest rates) of many mortgage-backed securities.

[left margin]

"THE ABILITY TO INVEST IN BB SECURITIES ALLOWS US GREATER FLEXIBILITY  IN OUR
EFFORTS TO ENHANCE RETURNS BY VENTURING INTO AN AREA OF THE MARKET THAT'S
LARGELY OVERLOOKED."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

AS OF SEPTEMBER 30, 1998
U.S. Treasury Securities     33%
Corporate Bonds              26%
Mortgage-Backed Securities   24%
Asset-Backed Securities       8%
Gov't. Agency Securities      4%
Other                         5%

AS OF MARCH 31, 1998
U.S. Treasury Securities     27%
Corporate Bonds              26%
Mortgage-Backed Securities   25%
Asset-Backed Securities       7%
Other                        15%

Security types are defined on page 20.


6      1-800-345-2021


Premium Bond--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

WAS THAT WHY PREMIUM BOND'S AVERAGE MATURITY FELL?

     That's the main  reason,  yes.  Remember  that the  average  maturities  of
mortgage-backed  securities  tend to fall during bond market  rallies,  and rise
during market  selloffs.  So, as the market rallied,  the average  maturities of
these securities naturally  shortened.  For Premium Bond, that translated into a
decline  in average  maturity  to 8.8 years by the end of  September,  from 10.7
years in April.

WHAT'S YOUR OUTLOOK FOR INTEREST RATES?

     Continued problems in Southeast Asia, Russia and Latin America finally seem
to be exacting a toll on U.S. economic growth. The economy appears to be slowing
despite  historically low unemployment and steady job growth.  Global demand for
U.S.  goods isn't  likely to  increase  much any time soon,  given the  economic
turmoil in many nations. We have also seen a drop in companies' capital spending
projections, which means they are expecting growth to slow.

     Consumer spending is currently  keeping the U.S. economy growing.  However,
with consumer savings very low and stock market profits at least  temporarily on
hold, consumer spending could falter. For these reasons, we believe that the Fed
may eventually  lower  short-term  interest rates again.  At the very least,  we
aren't expecting them to raise rates anytime soon.

GIVEN THOSE EXPECTATIONS, HOW DO YOU PLAN ON POSITIONING PREMIUM BOND?

     We will likely  maintain the  portfolio's  current  defensive  stance until
there are further  signs that global  economic  problems are being  successfully
resolved. If the market begins to stabilize somewhat, it might open the door for
other types of fixed-income securities to perform better.

     With spreads between corporates and Treasurys  unusually wide right now, we
think that many corporates offer good long-term values. If the market stabilizes
somewhat, we may look to add more of these securities to the portfolio.

[right margin]

". . . WE BELIEVE THAT THE FED MAY EVENTUALLY LOWER SHORT-TERM INTEREST RATES
AGAIN. AT THE VERY LEAST, WE AREN'T EXPECTING THEM TO RAISE RATES ANYTIME
SOON."

PORTFOLIO COMPOSITION BY CREDIT RATING
             % OF FUND INVESTMENTS
             AS OF           AS OF
            9/30/98         3/31/98
AAA            75%            74%
AA              3%             3%
A               8%             9%
BBB            14%            14%

Ratings provided by Standard & Poor's.  See Credit Rating  Guidelines on page 19
for more information.


                                                  www.americancentury.com      7


Premium Bond--Schedule of Investments
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998 (UNAUDITED)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
U.S. TREASURY SECURITIES
              $3,000,000   U.S. Treasury Notes, 6.25%,
                              3/31/99                            $  3,024,360
                 300,000   U.S. Treasury Notes, 7.125%,
                              9/30/99                                 307,449
               1,000,000   U.S. Treasury Notes, 5.625%,
                              12/31/99                              1,012,810
                 400,000   U.S. Treasury Notes, 7.75%,
                              1/31/00                                 416,636
               4,000,000   U.S. Treasury Notes, 5.50%,
                              2/29/00                               4,055,680
               1,000,000   U.S. Treasury Notes, 6.375%,
                              5/15/00                               1,029,740
               2,700,000   U.S. Treasury Notes, 6.625%,
                              7/31/01                               2,859,570
               1,000,000   U.S. Treasury Notes, 7.50%,
                              11/15/01                              1,090,360
               1,300,000   U.S. Treasury Notes, 5.25%,
                              8/15/03                               1,358,344
                 700,000   U.S. Treasury Notes, 5.75%,
                              8/15/03                                 742,889
               1,450,000   U.S. Treasury Notes, 7.875%,
                              11/15/04                              1,718,613
               1,000,000   U.S. Treasury Notes, 7.00%,
                              7/15/06                               1,164,770
               1,250,000   U.S. Treasury Notes, 5.50%,
                              2/15/08                               1,350,613
                 300,000   U.S. Treasury Notes, 5.625%,
                              5/15/08                                 328,560
               1,000,000   U.S. Treasury Bonds, 12.00%,
                              8/15/08                               1,567,010
               1,200,000   U.S. Treasury Bonds, 9.25%,
                              2/15/16                               1,767,432
               1,400,000   U.S. Treasury Bonds, 8.875%,
                              8/15/17                               2,024,596
                 750,000   U.S. Treasury Bonds, 9.125%,
                              5/15/18                               1,114,148
                 400,000   U.S. Treasury Bonds, 7.125%,
                              2/15/23                                 505,016
               1,600,000   U.S. Treasury Bonds, 7.50%,
                              11/15/24                              2,122,432
                 475,000   U.S. Treasury Bonds, 7.625%,
                              2/15/25                                 640,110
                 300,000   U.S. Treasury Bonds, 6.00%,
                              2/15/26                                 335,283
               1,850,000   U.S. Treasury Bonds, 6.375%,
                              8/16/27                               2,182,279
                                                                ---------------
TOTAL U.S. TREASURY SECURITIES--33.3%                              32,718,700
                                                                ---------------
   (Cost $30,626,428)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
U.S. GOVERNMENT AGENCY SECURITIES
              $1,000,000   FHLMC, 6.10%, 11/27/98                $  1,001,500
                 500,000   FHLMC, 7.09%, 11/24/06                     503,365
               1,000,000   FHLMC, 5.75%, 4/15/08                    1,062,560
                 500,000   FNMA MTN, 7.00%, 2/20/07                   533,165
               1,000,000   FNMA MTN, 7.49%, 5/22/07                 1,042,540
                                                                ---------------
TOTAL U.S. GOVERNMENT
AGENCY SECURITIES--4.2%                                             4,143,130
                                                                ---------------
   (Cost $3,993,339)

MORTGAGE-BACKED SECURITIES(1)
                 912,773   FHLMC Pool #E68523, 6.50%,
                              10/7/03                                 934,031
               1,000,000   FHLMC Pool #C00553, 7.00%,
                              9/1/27                                1,027,404
                 263,178   FHLMC Pool #D75034, 8.50%,
                              10/1/26                                 274,321
                 965,421   FHLMC Pool #C00578, 6.50%,
                              1/1/28                                  983,704
               1,197,874   FNMA Pool #272894, 6.00%,
                              2/1/09                                1,213,365
                 732,390   FNMA Pool #392607, 7.00%,
                              7/1/12                                  753,354
                 202,181   FNMA Pool #426130, 6.00%,
                              5/1/13                                  204,432
                 800,587   FNMA Pool #426773, 6.00%,
                              7/1/13                                  809,498
                 873,870   FNMA Pool #405425, 7.00%,
                              12/1/27                                 898,955
                 726,366   FNMA Pool #413812, 6.50%,
                              1/1/28                                  739,336
               1,818,455   FNMA Pool #406904, 7.50%,
                              4/1/28                                1,877,222
               1,820,447   FNMA Pool #426069, 7.00%,
                              5/1/28                                1,872,921
               1,000,000   FNMA REMIC, Series 1997-10,
                              Class M SEQ, 6.60%, 8/18/24           1,016,907
                 667,664   GNMA Pool #230356, 7.50%,
                              8/20/17                                 697,650
               1,144,987   GNMA Pool #313107, 7.00%,
                              11/15/22                              1,187,805
                  59,765   GNMA Pool #407141, 9.25%,
                              2/15/25                                  64,443
                 285,867   GNMA Pool #408099, 8.75%,
                              3/15/25                                 306,306
                 123,369   GNMA Pool #407254, 9.25%,
                              3/15/25                                 133,025
                 831,464   GNMA Pool #423986, 8.00%,
                              8/15/26                                 870,744
                 165,670   GNMA Pool #432437, 7.50%,
                              4/15/27                                 171,857

                                              See Notes to Financial Statements


8      1-800-345-2021


Premium Bond--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
SEPTEMBER 30, 1998 (UNAUDITED)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
             $   858,557   GNMA Pool #447692, 7.50%,
                              5/15/27                             $   890,619
                 834,454   GNMA Pool #423061, 8.00%,
                              6/15/27                                 870,465
                 419,515   GNMA Pool #443782, 7.50%,
                              11/15/27                                435,182
                 136,945   GNMA Pool #461011, 7.50%,
                              11/15/27                                142,059
                 695,576   GNMA Pool #467626, 7.00%,
                              2/15/28                                 718,602
                 651,715   GNMA Pool #458862, 7.50%,
                              2/15/28                                 675,951
                 480,453   GNMA Pool #436277, 6.50%,
                              3/15/28                                 491,553
                 967,818   GNMA Pool #471859, 7.00%,
                              4/15/28                                 999,856
                  33,332   GNMA Pool #455126, 6.50%,
                              5/15/28                                  34,102
               1,996,526   GNMA Pool #458887, 6.50%,
                              5/15/28                               2,042,643
                 493,072   GNMA Pool #463891, 6.50%,
                              5/15/28                                 504,463
                                                                ---------------
TOTAL MORTGAGE-BACKED
SECURITIES--24.3%                                                  23,842,775
                                                                ---------------
   (Cost $23,315,809)

ASSET-BACKED SECURITIES(1)
               1,000,000   Case Equipment Loan Trust,
                              Series 1998 B, Class A4 SEQ,
                              5.92%, 10/15/05                       1,020,915
               1,000,000   CIT RV Trust, Series 1997 A,
                              Class A6, 6.35%, 1/15/00              1,041,057
                 750,000   CIT RV Trust, Series 1998 A,
                              Class A4 SEQ, 6.09%,
                              2/15/12                                 774,386
                 984,256   First Union-Lehman Brothers
                              Commercial Mortgage, Series
                              1998 C2, Class A1 SEQ,
                              6.28%, 6/18/07                        1,015,067
                 508,071   Green Tree Financial Corp., Series
                              1995-7, Class A3, 6.35%,
                              11/15/26                                511,422
                 700,000   Money Store (The) Home Equity
                              Trust, Series 1994 B, Class A4
                              SEQ, 7.60%, 7/15/21                     732,662
               1,000,000   Money Store (The) Home Equity
                              Trust, Series 1997 C, Class AF6
                              SEQ, 6.67%, 3/1/03                    1,039,302
                 292,554   Textron Financial Corp.
                              Receivables Trust, Series
                              1997 A, Class A, 6.05%,
                              3/16/09 (Acquired 9/18/97,
                              Cost $292,167)(2)                       295,046

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
             $   500,000   United Companies Financial Corp.,
                              Home Equity Loan, Series
                              1996 D1, Class A5, 6.92%,
                              10/15/18                            $   522,889
                 500,000   United Companies Financial Corp.,
                              Home Equity Loan, Series
                              1997 C, Class A7, 6.85%,
                              1/15/29                                 523,707
                 397,273   World Omni Automobile Lease
                              Securitization, Series 1996 B,
                              Class A2, 6.20%, 11/15/02               399,361
                                                                ---------------
TOTAL ASSET-BACKED SECURITIES--8.0%                                 7,875,814
                                                                ---------------
   (Cost $7,644,164)

CORPORATE BONDS
AIRLINES--0.5%
                 461,785   Delta Air Lines, Inc., 7.54%,
                              10/11/11                                498,926
                                                                ---------------
AUTOMOBILES & AUTO PARTS--0.4%
                 350,000   General Motors Corp., 7.00%,
                              6/15/03                                 376,359
                                                                ---------------
BANKING--2.6%
                 250,000   Corestates Capital Corp., 5.875%,
                              10/15/03                                259,165
                 200,000   First Union Corp., 8.77%,
                              11/15/99                                208,630
                 500,000   National Bank of Canada,
                              8.125%, 8/15/04                         564,415
                 500,000   NationsBank Corporation,
                              6.125%, 7/15/04                         524,815
                 650,000   NationsBank Corporation,
                              6.60%, 5/15/10                          693,440
                 300,000   Santander Financial Issuances
                              Ltd., 6.375%, 2/15/11                   306,276
                                                                ---------------
                                                                    2,556,741
                                                                ---------------
CHEMICALS & RESINS--0.4%
                 300,000   ARCO Chemical Co., 10.25%,
                              11/1/10                                 377,142
                                                                ---------------
COMMUNICATIONS SERVICES--4.6%
                 750,000   Cable & Wireless Communications,
                              6.625%, 3/6/05                          767,813
                 500,000   CSC Holdings Inc., 7.625%,
                              7/15/18                                 483,750
                 650,000   LCI International, Inc., 7.25%,
                              6/15/07                                 687,648
                 500,000   MCI WorldCom, Inc., 8.875%,
                              1/15/01                                 548,110
                 300,000   MCI WorldCom, Inc., 7.55%,
                              4/1/04                                  329,838
                 750,000   MCI WorldCom, Inc., 6.40%,
                              8/15/05                                 793,343

See Notes to Financial Statements


                                                  www.americancentury.com      9


Premium Bond--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
SEPTEMBER 30, 1998 (UNAUDITED)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
              $  400,000   TCI Communications, Inc.,
                              6.375%, 9/15/99                     $   403,896
                 500,000   TKR Cable Inc., 10.50%,
                              10/30/99                                550,465
                                                                ---------------
                                                                    4,564,863
                                                                ---------------
ELECTRICAL & ELECTRONIC
COMPONENTS--0.9%
                 200,000   Anixter International Inc., 8.00%,
                              9/15/03                                 221,380
                 200,000   Hutchison Whampoa Financial,
                              Series B, 7.45%, 8/1/17
                              (Acquired 6/4/98, Cost
                              $170,238)(2)                            143,212
                 500,000   Yorkshire Power Finance, 6.15%,
                              2/25/03 (Acquired 2/19/98,
                              Cost $500,000)(2)                       509,445
                                                                ---------------
                                                                      874,037
                                                                ---------------
ENERGY (PRODUCTION & MARKETING)--1.5%
                 750,000   Enron Corp., 6.625%, 11/15/05              792,278
                 700,000   USX Corp., 6.85%, 3/1/08                   727,965
                                                                ---------------
                                                                    1,520,243
                                                                ---------------
ENERGY (SERVICES)--0.5%
                 500,000   Petroleum Geo-Services ASA,
                              7.125%, 3/30/28                         502,145
                                                                ---------------
FINANCIAL SERVICES--4.8%
                 400,000   Advanta Corp. MTN, Series B,
                              7.00%, 5/1/01                           366,592
                 500,000   Associates Corp., N.A., 6.625%,
                              6/15/05                                 539,215
               1,000,000   Comdisco, Inc., 6.375%,
                              11/30/01                              1,037,500
                 400,000   Dean Witter, Discover & Co.,
                              6.875%, 3/1/03                          427,836
                 500,000   Ford Motor Credit Co., 6.125%,
                              4/28/03                                 518,145
                 200,000   Ford Motor Credit Co., 6.75%,
                              5/15/05                                 215,174
                 250,000   Lehman Brothers Holdings Inc.
                              MTN, Series 1998 E, 6.00%,
                              2/26/01                                 249,873
               1,000,000   Merrill Lynch & Co., Inc., 6.50%,
                              4/1/01                                1,031,620
                 300,000   Paine Webber Group Inc.,
                              7.875%, 2/15/03                         328,968
                                                                ---------------
                                                                    4,714,923
                                                                ---------------

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
INSURANCE--0.5%
             $   450,000   Zurich Capital Trust I, 8.38%,
                              6/1/37 (Acquired
                              5/28/97-6/11/97,
                              Cost $452,966)(2)                   $   507,285
                                                                ---------------
LEISURE--0.7%
                 350,000   Hilton Hotels Corp., 7.00%,
                              7/15/04                                 362,009
                 300,000   Time Warner Inc., 6.85%,
                              1/15/26                                 320,751
                                                                ---------------
                                                                      682,760
                                                                ---------------
MACHINERY & EQUIPMENT--0.8%
                 750,000   Caterpillar Financial Services
                              Corp., 5.90%, 9/10/02                   774,053
                                                                ---------------
METALS & MINING--0.7%
                 600,000   Barrick Gold Corp., 7.50%,
                              5/1/07                                  663,828
                                                                ---------------
OFFICE EQUIPMENT & SUPPLIES--0.4%
                 350,000   Xerox Capital Trust, 8.00%,
                              2/1/27 (Acquired 7/17/97,
                              Cost $364,084)(2)                       394,713
                                                                ---------------
PAPER & FOREST PRODUCTS--0.7%
                 750,000   Abitibi-Consolidated Inc., 7.40%,
                              4/1/18                                  708,750
                                                                ---------------
PRINTING & PUBLISHING--0.3%
                 250,000   News America Inc., 6.625%,
                              1/9/08                                  260,048
                                                                ---------------
RAILROAD--1.5%
                 350,000   Norfolk Southern Corp., 7.90%,
                              5/15/97                                 417,526
               1,000,000   Norfolk Southern Corp., 6.95%,
                              5/1/02                                1,055,670
                                                                ---------------
                                                                    1,473,196
                                                                ---------------
REAL ESTATE--2.4%
                 500,000   Chelsea GCA Realty Partners,
                              7.25%, 10/21/07                         546,400
                 450,000   Price REIT, Inc. (The), 7.25%,
                              11/1/00                                 466,178
                 750,000   Simon DeBartolo Group Inc.,
                              6.625%, 6/15/03 (Acquired
                              6/17/98, Cost $748,260)(2)              774,405
                 500,000   Spieker Properties, Inc., 6.80%,
                              12/15/01                                524,415
                                                                ---------------
                                                                    2,311,398
                                                                ---------------

                                              See Notes to Financial Statements


10      1-800-345-2021


Premium Bond--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
SEPTEMBER 30, 1998 (UNAUDITED)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
RETAIL (GENERAL MERCHANDISE)--0.4%
             $   300,000   Sears, Roebuck & Co., Inc.,
                              9.375%, 11/1/11                     $   398,634
                                                                ---------------
UTILITIES--1.7%
                 350,000   CalEnergy Co. Inc., 7.23%,
                              9/15/05                                 358,008
                 350,000   CalEnergy Co. Inc., 7.63%,
                              10/15/07                                365,512
                 500,000   Columbia Gas System, Inc. (The),
                              6.80%, 11/28/05                         541,010
                 400,000   Duke Power Co., 6.875%,
                              8/1/23                                  411,961
                                                                ---------------
                                                                    1,676,491
                                                                ---------------
TOTAL CORPORATE BONDS--26.3%                                       25,836,535
                                                                ---------------
   (Cost $24,779,193)

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
SOVEREIGN GOVERNMENTS & AGENCIES--0.6%
             $   500,000   Hydro-Quebec, 8.05%, 7/7/24            $   599,055
                                                                ---------------
   (Cost $540,650)

MUNICIPAL OBLIGATION--2.0%
               2,000,000   Massachusetts Water Resource
                              Auth. Rev., Series 1993 C,
                              4.75%, 12/1/23 (MBIA)                 1,956,760
                                                                ---------------
   (Cost $1,858,550)

TEMPORARY INVESTMENTS--1.3%

Repurchase Agreement, State Street Boston
    Corp., (U.S. Treasury obligations), in a joint
    trading account at 5.38%, dated 9/30/98,
    due 10/1/98 (Delivery value $1,260,188)                         1,260,000
                                                                ---------------
   (Cost $1,260,000)

TOTAL INVESTMENT SECURITIES--100.0%                              $ 98,232,769
                                                                ===============
   (Cost $94,018,133)

NOTES TO SCHEDULE OF INVESTMENTS

FHLMC = Federal Home Loan Mortgage Corporation

FNMA = Federal National Mortgage Association

GNMA = Government National Mortgage Association

MBIA = MBIA Insurance Corp.

MTN = Medium Term Note

(1)  Final maturity indicated.  Expected remaining maturity used for purposes of
     calculating the weighted average portfolio maturity.

(2)  Security was purchased  under Rule 144A of the Securities Act of 1933 or is
     a private  placement and, unless  registered under the Act or exempted from
     registration,  may only be sold to qualified institutional  investors.  The
     aggregate  value of these  securities at September 30, 1998 was $2,624,106,
     which represented 2.7% of net assets.

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

* the percentage of investments in each industry, as applicable

* the percent and dollar breakdown of each investment category

See Notes to Financial Statements


                                                 www.americancentury.com      11


Statement of Assets and Liabilities
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998 (UNAUDITED)

ASSETS
Investment securities, at value
  (identified cost of $94,018,133)
  (Note 3) ...............................................          $ 98,232,769
Cash .....................................................                   428
Receivable for capital shares sold .......................               285,180
  Interest receivable ....................................             1,191,847
                                                                    ------------
                                                                      99,710,224
                                                                    ------------
LIABILITIES
Disbursements in excess of
  demand deposit cash ....................................                   638
Payable for capital shares
  redeemed ...............................................             3,241,942
Accrued management fees
  (Note 2) ...............................................                35,843
Dividends payable ........................................                75,903
Accrued expenses and
  other liabilities ......................................                    60
                                                                    ------------
                                                                       3,354,386
                                                                    ------------
Net Assets ...............................................          $ 96,355,838
                                                                    ============
CAPITAL SHARES,
$0.01 PAR VALUE
Authorized ...............................................           100,000,000
                                                                    ============
Outstanding ..............................................             9,189,840
                                                                    ============
Net Asset Value Per Share ................................          $      10.49
                                                                    ============
NET ASSETS CONSIST OF:
Capital (par value and
  paid in surplus) .......................................          $ 91,703,626
Accumulated undistributed
  net realized gain on investments .......................               437,576
Net unrealized appreciation
  on investments (Note 3) ................................             4,214,636
                                                                    ------------
                                                                    $ 96,355,838
                                                                    ============

- --------------------------------------------------------------------------------
UNDERSTANDING  THE STATEMENT 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.  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
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


12      1-800-345-2021


Statement of Operations
- --------------------------------------------------------------------------------
FOR THE SIX MONTHS ENDED SEPTEMBER 30, 1998 (UNAUDITED)

INVESTMENT INCOME
Income:
Interest ..................................................           $2,766,610
                                                                      ----------
Expenses (Note 2):
Management fees ...........................................              199,797
Directors' fees and expenses ..............................                  345
                                                                      ----------
                                                                         200,142
                                                                      ----------
Net investment income .....................................            2,566,468
                                                                      ----------
REALIZED AND UNREALIZED
GAIN ON INVESTMENTS (NOTE 3)
Net realized gain on investments ..........................               57,571
Change in net unrealized appreciati
  on on investments .......................................            2,947,208
                                                                      ----------
Net realized and unrealized gain
  on investments ..........................................            3,004,779
                                                                      ----------
Net Increase in Net Assets
  Resulting from Operations ...............................           $5,571,247
                                                                      ==========

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

Fund OPERATIONS include:

* interest 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


                                                 www.americancentury.com      13


Statements of Changes in Net Assets
- --------------------------------------------------------------------------------
SIX MONTHS ENDED SEPTEMBER 30, 1998 (UNAUDITED) AND YEAR ENDED MARCH 31, 1998

                                                 SEPTEMBER 30,       MARCH 31,
Increase in Net Assets                               1998              1998

OPERATIONS
Net investment income ......................     $  2,566,468      $  3,493,146
Net realized gain on investments ...........           57,571           795,885
Change in net unrealized appreciation
  (depreciation) on investments ............        2,947,208         1,701,053
                                                 ------------      ------------
Net increase in net assets
  resulting from operations ................        5,571,247         5,990,084
                                                 ------------      ------------
DISTRIBUTIONS TO
SHAREHOLDERS
From net investment income .................       (2,588,365)       (3,471,249)
From net realized gains from
   investment transactions .................             --            (387,844)
                                                 ------------      ------------
Decrease in net assets
  from distributions .......................       (2,588,365)       (3,859,093)
                                                 ------------      ------------
CAPITAL SHARE TRANSACTIONS
Proceeds from shares sold ..................       46,787,785        72,857,318
Proceeds from reinvestment
  of distributions .........................        2,547,725         3,796,289
Payments for shares redeemed ...............      (21,133,694)      (35,363,449)
                                                 ------------      ------------
Net increase in net assets
  from capital share transactions ..........       28,201,816        41,290,158
                                                 ------------      ------------
Net increase in net assets .................       31,184,698        43,421,149

NET ASSETS
Beginning of period ........................       65,171,140        21,749,991
                                                 ------------      ------------
End of period ..............................     $ 96,355,838      $ 65,171,140
                                                 ============      ============
Undistributed net investment income ........             --        $     21,897
                                                 ============      ============
TRANSACTIONS IN SHARES
OF THE FUND
Sold .......................................        4,580,787         7,303,108
Issued in reinvestment of distributions ....          248,723           376,344
Redeemed ...................................       (2,058,555)       (3,489,976)
                                                 ------------      ------------
Net increase ...............................        2,770,955         4,189,476
                                                 ============      ============

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

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

* distributions--income and gains distributed to shareholders

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

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

                                              See Notes to Financial Statements


14      1-800-345-2021


Notes to Financial Statements
- --------------------------------------------------------------------------------
SEPTEMBER 30, 1998 (UNAUDITED)

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     ORGANIZATION--American  Century Premium Reserves, Inc. (the Corporation) is
registered under the Investment  Company Act of 1940 as an open-end  diversified
management  investment  company.  American  Century - Benham  Premium  Bond Fund
(Premium  Bond)  is  one of the  three  funds  issued  by the  Corporation.  The
investment  objective  of Premium  Bond is to obtain a high level of income from
investments in a portfolio of longer-term bonds and other debt obligations.  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 Directors.

     SECURITY  TRANSACTIONS--Security  transactions  are accounted for as of the
trade date. Net realized gains and losses are determined on the identified  cost
basis, which is also used for federal income tax purposes.

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

     FORWARD  COMMITMENTS--The  Fund  may  purchase  and  sell  U.S.  government
securities on a firm commitment basis. Under these arrangements, the securities'
prices and  yields  are fixed on the date of the  commitment,  but  payment  and
delivery are scheduled  for a future date.  During this period,  securities  are
subject  to  market   fluctuations.   The  Fund  maintains  segregated  accounts
consisting  of cash or liquid  securities  in an amount  sufficient  to meet the
purchase price.

     REPURCHASE  AGREEMENTS--The Fund may enter into repurchase  agreements with
institutions that the Fund's  investment  manager,  American Century  Investment
Management,  Inc. (ACIM),  has determined are creditworthy  pursuant to criteria
adopted by the Board of  Directors.  Each  repurchase  agreement  is recorded at
cost. The Fund requires that the collateral, represented by securities, received
in a  repurchase  transaction  be  transferred  to  the  custodian  in a  manner
sufficient  to enable  the Fund to  obtain  those  securities  in the event of a
default under the repurchase  agreement.  ACIM monitors,  on a daily basis,  the
securities  transferred to ensure the value including accrued  interest,  of the
securities  under each repurchase  agreement is equal to or greater than amounts
owed to the Fund under each repurchase agreement.

     JOINT  TRADING  ACCOUNT--Pursuant  to an  Exemptive  Order  issued  by  the
Securities  and  Exchange  Commission,  the Fund,  along with  other  registered
investment  companies  having  management  agreements  with ACIM,  may  transfer
uninvested  cash  balances  into a joint  trading  account  held  at the  Fund's
custodian. These balances are invested in one or more repurchase agreements that
are collateralized by U.S. Treasury or Agency obligations.

     INCOME TAX STATUS--It is the Fund's policy to distribute all net investment
income and net realized  gains to  shareholders  and to  otherwise  qualify as a
regulated  investment company under 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 are
declared daily and distributed  monthly.  Distributions  from net realized gains
are declared and paid annually.

     The  character of  distributions  made during the year from net  investment
income or net realized gains may differ from their ultimate characterization for
federal income tax purposes.  These differences  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.

     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 Corporation's
distributor. Certain officers of FDI are also officers of the Corporation.


                                                 www.americancentury.com      15


Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)
SEPTEMBER 30, 1998 (UNAUDITED)
- --------------------------------------------------------------------------------
2. TRANSACTIONS WITH RELATED PARTIES

     The  Corporation  has entered  into a Management  Agreement  with ACIM that
provides the Fund with investment  advisory and management  services in exchange
for a single,  unified  management fee. The Agreement provides that all expenses
of the Fund, except brokerage commissions,  taxes,  interest,  expenses of those
directors  who  are  not  considered  "interested  persons"  as  defined  in the
Investment  Company  Act of 1940  (including  counsel  fees)  and  extraordinary
expenses, will be paid by ACIM. The fee is computed daily and paid monthly based
on the Fund's  average daily closing net assets during the previous  month.  The
annual management fee for the Fund is 0.45%.

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

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

     Purchases  of  investment  securities,  excluding  short-term  investments,
totaled  $56,676,816,  including U.S. Treasury and Agency  obligations  totaling
$39,021,944.  Sales of investment securities,  excluding short-term investments,
totaled  $24,991,510,  including U.S. Treasury and Agency  obligations  totaling
$18,112,765.

     As of September  30, 1998,  accumulated  net  unrealized  appreciation  was
$4,206,272,  based on the aggregate cost of  investments  for federal income tax
purposes  of  $94,026,497,   which  consisted  of  unrealized   appreciation  of
$4,320,338, and unrealized depreciation of $114,066.


16      1-800-345-2021


Premium Bond--Financial Highlights
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
  FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED MARCH 31 (EXCEPT AS NOTED)

                                         1998(1)              1998           1997           1996           1995           1994
PER-SHARE DATA
Net Asset Value,
<S>                                   <C>               <C>            <C>            <C>            <C>            <C>       
Beginning of Period ...............   $    10.15        $     9.76     $     9.93     $     9.46     $     9.64     $    10.00
                                      ----------        ----------     ----------     ----------     ----------     ----------
Income From Investment
Operations
  Net Investment Income ...........         0.30              0.61           0.61           0.61           0.59           0.46
  Net Realized and Unrealized
  Gain (Loss) on Investments ......         0.34              0.45          (0.17)          0.47          (0.18)         (0.36)
                                      ----------        ----------     ----------     ----------     ----------     ----------
  Total From Investment
  Operations ......................         0.64              1.06           0.44           1.08           0.41           0.10
                                      ----------        ----------     ----------     ----------     ----------     ----------
Distributions
  From Net Investment Income ......        (0.30)            (0.61)         (0.61)         (0.61)         (0.59)         (0.46)
  From Net Realized Gains .........         --               (0.06)          --             --             --             --
                                      ----------        ----------     ----------     ----------     ----------     ----------
  Total Distributions .............        (0.30)            (0.67)         (0.61)         (0.61)         (0.59)         (0.46)
                                      ----------        ----------     ----------     ----------     ----------     ----------
Net Asset Value,
End of Period .....................   $    10.49        $    10.15     $     9.76     $     9.93     $     9.46     $     9.64
                                      ==========        ==========     ==========     ==========     ==========     ==========
  Total Return(2) .................         6.30%            11.14%          4.57%         11.53%          4.48%          0.92%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets .............         0.45%(3)          0.45%          0.45%          0.43%          0.45%          0.45%
Ratio of Net Investment Income
to Average Net Assets .............         5.79%(3)          6.06%          6.20%          6.08%          6.30%          4.65%
Portfolio Turnover ................           30%              138%            63%            92%            51%           144%
Net Assets, End of Period
(in thousands) ....................   $   96,356        $   65,171     $   21,750     $   20,280     $   10,334     $    8,080
</TABLE>

(1)  Six months ended September 30, 1998 (unaudited).

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

(3)  Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL  HIGHLIGHTS--This  statement itemizes current period
activity and  statistics and provides  comparison  data for the last five fiscal
years.

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      17


Retirement Account Information
- --------------------------------------------------------------------------------

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.


18      1-800-345-2021


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.

     PREMIUM BOND seeks a high level of income from  investment  in  longer-term
bonds and other debt  instruments.  It is designed for  investors  whose primary
goal is a level of income  higher than is generally  provided by money market or
short- and intermediate-term securities and who can accept the generally greater
price volatility associated with longer-term bonds.

COMPARATIVE INDICES

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

     The   LEHMAN   AGGREGATE   BOND   INDEX   is   composed   of   the   Lehman
Government/Corporate  Index and the Lehman Mortgage-Backed  Securities Index. It
reflects the price fluctuations of Treasury  securities,  U.S. government agency
securities, corporate bond issues and mortgage-backed securities.

LIPPER RANKINGS

     LIPPER  ANALYTICAL  SERVICES,  INC. is an  independent  mutual fund ranking
service that groups funds according to their investment objectives. Rankings are
based on  average  annual  returns  for each  fund in a given  category  for the
periods indicated. Rankings are not included for periods less than one year.

     The Lipper category for Premium Bond is:

     CORPORATE  DEBT  FUNDS  RATED A --funds  that  invest at least 65% of their
assets in government issues or corporate debt issues rated A or better.

CREDIT RATING GUIDELINES

     Credit  ratings  are  issued  by  independent  research  companies  such as
Standard  & Poor's  and  Moody's.  Ratings  are based on an  issuer's  financial
strength and ability to pay interest and principal in a timely manner.

     It's important to note that credit ratings are  subjective,  reflecting the
opinions of the rating agencies; they are not absolute standards of quality.

[right margin]

INVESTMENT TEAM LEADERS

PORTFOLIO MANAGERS
     BUD HOOPS
     JEFF HOUSTON

CREDIT RESEARCH MANAGER
     GREG AFIESH


                                                 www.americancentury.com      19


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

RETURNS

* TOTAL  RETURN  figures  show the overall  percentage  change in the value of a
hypothetical  investment  in  the  fund  and  assume  that  all  of  the  fund's
distributions are reinvested.

* AVERAGE ANNUAL RETURNS  illustrate the annually  compounded returns that would
have produced the fund's cumulative total returns if the fund's  performance had
been  constant  over the  entire  period.  Average  annual  returns  smooth  out
variations  in a fund's  return;  they are not the same as  fiscal  year-by-year
results.  For  fiscal  year-by-year  returns,  please  refer  to the  "Financial
Highlights" on page 17.

YIELDS

* 30-DAY SEC YIELD  represents net  investment  income earned by the fund over a
30-day period,  expressed as an annual percentage rate based on the fund's share
price at the end of the 30-day  period.  The SEC yield  should be regarded as an
estimate  of the  fund's  rate of  investment  income,  and it may not equal the
fund's  actual  income  distribution  rate,  the income paid to a  shareholder's
account, or the income reported in the fund's financial statements.

PORTFOLIO STATISTICS

* NUMBER OF SECURITIES--the  number of different  securities held by a fund on a
given 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.  The
longer the WAM, the more interest rate  exposure and  sensitivity  the portfolio
has.

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

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

TYPES OF FIXED-INCOME SECURITIES

* ASSET-BACKED SECURITIES--debt securities that represent ownership in a pool of
assets, such as credit card debt, auto loans, or home equity loans.

* CORPORATE  BONDS--debt  securities  or  instruments  issued by  companies  and
corporations.

* MORTGAGE-BACKED  SECURITIES--debt securities that represent ownership in pools
of mortgage loans.

* U.S. GOVERNMENT AGENCY  SECURITIES--debt  securities issued by U.S. government
agencies  (such as the Federal Home Loan Bank and the Federal Farm Credit Bank).
Government  agency  securities  include  discount notes (maturing in one year or
less) and medium-term  notes,  debentures and bonds (maturing in three months to
50 years).

* U.S.  TREASURY  SECURITIES--debt  securities  issued by the U.S.  Treasury and
backed by the direct  "full  faith and  credit"  pledge of the U.S.  government.
Treasury  securities  include  bills  (maturing  in one  year  or  less),  notes
(maturing in two to 10 years), and bonds (maturing in more than 10 years).


20      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
   Intermediate-Term Bond
   Bond
   Premium Bond
   High-Yield Bond
International
   International Bond

TAX-FREE & MUNICIPAL BOND FUNDS
Multiple-State
   Limited-Term Tax-Free
   Intermediate-Term Tax-Free
   Long-Term Tax-Free
   High-Yield Municipal
Single-State
   Arizona Intermediate-Term Municipal
   California High-Yield Municipal
   California Insured Tax-Free
   California Intermediate-Term Tax-Free
   California Limited-Term Tax-Free
   California Long-Term Tax-Free
   Florida Intermediate-Term Municipal

MONEY MARKET FUNDS
Taxable
   Capital Preservation
   Government Agency Money Market
   Premium Capital Reserve
   Premium Government Reserve
   Prime Money Market
Tax-Free & Municipal
   California Municipal Money Market
   California Tax-Free Money Market
   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
   Global Natural Resources
   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:
1-800-345-8765

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

FAX: 816-340-7962

INTERNET: WWW.AMERICANCENTURY.COM


AMERICAN CENTURY PREMIUM RESERVES, INC.


INVESTMENT MANAGER
AMERICAN CENTURY INVESTMENT MANAGEMENT, INC.
KANSAS CITY, MISSOURI

THIS  REPORT AND THE  STATEMENTS  IT  CONTAINS  ARE  SUBMITTED  FOR THE  GENERAL
INFORMATION OF OUR  SHAREHOLDERS.  THE REPORT IS NOT AUTHORIZED FOR DISTRIBUTION
TO  PROSPECTIVE  INVESTORS  UNLESS  PRECEDED  OR  ACCOMPANIED  BY  AN  EFFECTIVE
PROSPECTUS.

(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-14216                                            Funds Distributor, Inc.


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