AMERICAN CENTURY PREMIUM RESERVES INC
N-30D, 1999-05-28
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[front cover]
                                                                 MARCH 31, 1999

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

    [graphic of stairs]

- -----------------------
PREMIUM BOND

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


[inside front cover]

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

FOLLOWING BENHAM'S FOOTSTEPS

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

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

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

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

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

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

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

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

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

WHAT'S NEW . . .

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

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

Past performance is no guarantee of future results.

[left margin]

PREMIUM BOND
(ACBPX)
- ------------------------------


Our Message to You
- --------------------------------------------------------------------------------
/photo of James E. Stowers III and James E. Stowers, Jr./
James E. Stowers III, seated, with James E. Stowers, Jr.

     During the year ended March 31, 1999,  the U.S.  bond market  experienced a
remarkable  reversal.  When we last addressed you in the  semiannual  report for
Premium Bond, yields had just plunged as investors rushed to the relative safety
and  liquidity of U.S.  Treasury  securities.  Investors  were spooked by global
economic and financial  turmoil,  which also motivated the Federal  Reserve (the
U.S.  central  bank) to cut  short-term  interest  rates to bolster a  seemingly
vulnerable U.S. economy and help stabilize markets worldwide.

     The Fed's actions  helped turn things  around.  By January  1999,  overseas
economies were  stabilizing,  the U.S.  economy was posting  strong growth,  and
investor confidence had rebounded. As a result, investors moved out of Treasurys
into stocks and  higher-yielding  bonds. Yields rose, though they still remained
significantly lower than they were a year earlier.

     Premium Bond's  management  team worked hard to produce healthy returns and
maintain the fund's yield in this difficult  environment.  We're proud to report
that Premium Bond had  above-average  returns  (according to Lipper Inc.) during
the past year, as well as over longer time periods.

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

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

     In   addition,   we've  made  some   enhancements   to  our  Web  site  (at
www.americancentury.com).  Among the new  features  are daily fund  information,
including  return and price data,  market and national  news, and a Forms Center
with access to the most-requested investor forms and applications.  You can also
sign up to receive fund prospectuses and shareholder reports electronically.

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

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

Sincerely,

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

[right margin]

                 Table of Contents
   Report Highlights ........................................................  2
   Market Perspective .......................................................  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
   Independent Auditors'
      Report ................................................................ 18
OTHER INFORMATION
   Retirement Account
      Information ........................................................... 19
   Background Information
      Investment Philosophy
         and Policies ....................................................... 20
      Comparative Indices ................................................... 20
      Lipper Rankings ....................................................... 20
      Credit Rating
         Guidelines ......................................................... 20
      Investment Team
         Leaders ............................................................ 20
   Glossary ................................................................. 21


                                                  www.americancentury.com      1


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

MARKET PERSPECTIVE

*   Bonds produced positive returns despite sharp interest rate changes. For the
    twelve months ended March 31, 1999, the Lehman Brothers Aggregate Bond Index
    returned 6.49%.

*   Bond yields fell in 1998 because  financial  crises  overseas sent investors
    scrambling  for  the  relative   safety  and  liquidity  of  U.S.   Treasury
    securities. In addition, the Federal Reserve lowered interest rates to boost
    the economy and restore investor confidence in the financial markets.

*   Though  rapid U.S.  economic  growth and more stable  markets and  economies
    overseas  caused  rates to rebound in late 1998 and early 1999,  bond yields
    finished the year lower overall.

*   Treasury  securities  performed  best  during the flight to quality in 1998,
    when yields fell to 30-year lows.

*   Corporate and mortgage-backed securities outperformed Treasurys in the first
    quarter of 1999 when the economic  situation  stabilized and investors began
    to sell Treasury bonds and buy higher-yielding securities.

MANAGEMENT Q&A

*   The portfolio performed  relatively well,  producing higher returns than the
    average "A-Rated Corporate Debt Fund," according to Lipper Inc.

*   We used a value-oriented approach to asset allocation, reducing our Treasury
    position and adding higher-yielding corporate securities.

*   These adjustments paid off in the first quarter of 1999, when Treasurys were
    the worst-performing domestic bond sector, while higher-yielding  securities
    performed relatively well.

*   Within our  corporate  bond  holdings,  we focused on  securities  issued by
    cyclical  companies--corporations  that tend to do best when the  economy is
    growing rapidly.

*   We increased  the  portfolio's  exposure to  asset-backed  bonds  because we
    believe they offer attractive yields with relatively high credit quality.

*   Because  we expect  less  interest  rate  volatility  going  forward,  we'll
    continue to overweight  higher-yielding  corporate and asset-backed  bonds--
    securities  that  typically  outperform  Treasurys when rates are relatively
    stable.

[left margin]

               PREMIUM BOND
                  (ACBPX)
TOTAL RETURNS:               AS OF 3/31/99
    6 Months                       -0.40%*
    1 Year                           5.88%
30-DAY SEC YIELD:                    5.80%
INCEPTION DATE:                     4/1/93
NET ASSETS:                 $105.3 million

* Not annualized.

See Total Returns on page 4.
Investment terms are defined in the Glossary on pages 21-22.


2      1-800-345-2021


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

MODERATE PERFORMANCE

     For the twelve months ended March 31, 1999, bonds produced positive returns
despite  dramatic  interest  rate  changes  (see the graphs at right).  However,
rising rates limited  performance  over the last six months.  For the year,  the
Lehman Brothers  Aggregate Bond Index--a broad measure of bond  performance--was
up 6.49%. For the six months, the index returned -0.16%.

INTEREST RATE VOLATILITY

     Global  capital  markets  were in a free fall from August  through  October
1998.  That turmoil was caused by financial  crises in Asia,  Russia,  and Latin
America that threatened U.S.  economic growth.  In addition,  anxieties  rippled
through  the  market  when a number  of  highly  leveraged  hedge  funds  nearly
collapsed.

     The Federal Reserve,  the U.S.  central bank,  lowered interest rates three
times in late 1998 to prop up the economy and restore investor confidence in the
financial  markets.  Those moves helped ease a possible  credit crunch,  calming
fears that tight credit would spark a recession.

COOLER MARKET FOR TREASURYS

     During the capital market crisis,  Treasurys  posted  exceptionally  strong
returns  because they offered  investors  liquidity and a safe haven from global
economic  turmoil.  Huge demand sent  Treasury  yields to 30-year  lows in early
October.  In addition,  Treasurys were an effective  portfolio  diversifier when
investor confidence and global equity values plummeted.  But investors' appetite
for Treasurys diminished as calm returned to the markets, and yields rose in the
first quarter of 1999. Despite these yield changes,  Treasury  securities turned
in a solid performance.

CORPORATE AND MORTGAGE-BACKED BONDS REBOUND

     The U.S.  economy  chugged  along  despite the  markets'  twists and turns,
growing at a 6% annual rate in the fourth quarter of 1998 and a 4.5% annual rate
in the first quarter of 1999.  Continued economic strength helped  re-invigorate
the corporate bond market,  which lagged Treasurys during the flight to quality.
More  importantly,  the Fed's  interest  rate cuts  helped ease credit and lower
corporate  borrowing costs.  This helped  corporate bonds  outperform  Treasurys
during the first three months of 1999.

     The mortgage-backed  securities market was hit hard by lower interest rates
in the third quarter of 1998, when mortgage  refinancings reached a record high.
Refinancings shorten the life of mortgage-backed  securities and leave investors
excess cash to reinvest in lower-yielding  securities. But prepayments slowed as
rates rose after  October,  while the  attractive  yields  offered by  mortgages
relative to Treasury bonds drew some buyers. Those factors have helped mortgages
outperform Treasurys so far in 1999.

[right margin]

"BONDS PRODUCED POSITIVE RETURNS  DESPITE DRAMATIC INTEREST RATE CHANGES."

BOND INDEX RETURNS
FOR THE YEAR ENDED MARCH 31, 1999
   SALOMON BROTHERS
      TREASURY INDEX               7.09%
   MERRILL LYNCH CORPORATE
      BOND INDEX                   6.22%
   SALOMON BROTHERS 30-YEAR
      GNMA INDEX                   6.29%

Source: Russell/Mellon Analytical Services

[line graph - data below]

SHIFTING TREASURY YIELD CURVES

                     3/31/98         10/5/98         3/31/99
YEARS TO MATURITY
1                     5.52%           4.35%           4.91%
2                     5.57%           4.06%           5.04%
3                     5.62%           4.13%           5.12%
4                     5.64%           4.22%           5.21%
5                     5.62%           4.07%           5.13%
6                     5.67%           4.08%           5.27%
7                     5.71%           4.09%           5.40%
8                     5.69%           4.08%           5.33%
9                     5.67%           4.07%           5.27%
10                    5.65%           4.07%           5.21%
11                    5.69%           4.18%           5.31%
12                    5.73%           4.30%           5.41%
13                    5.77%           4.42%           5.51%
14                    5.84%           4.54%           5.62%
15                    5.87%           4.65%           5.72%
16                    5.89%           4.69%           5.76%
17                    5.91%           4.74%           5.80%
18                    5.93%           4.79%           5.84%
19                    5.95%           4.84%           5.88%
20                    5.99%           4.88%           5.91%
21                    5.99%           4.89%           5.90%
22                    5.99%           4.91%           5.89%
23                    6.00%           4.93%           5.89%
24                    6.00%           4.95%           5.88%
25                    6.01%           4.97%           5.87%
26                    6.00%           4.92%           5.84%
27                    5.98%           4.87%           5.80%
28                    5.97%           4.82%           5.76%
29                    5.96%           4.77%           5.72%
30                    5.94%           4.71%           5.68%

Source: Bloomberg Financial Markets


                                                  www.americancentury.com      3


Premium Bond--Performance
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
TOTAL RETURNS AS OF MARCH 31, 1999

                        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) ...........  -0.40%        -0.16%           -0.96%              --
1 YEAR ................   5.88%         6.49%            5.03%         41 OUT OF 154
====================================================================================
AVERAGE ANNUAL RETURNS
====================================================================================
3 YEARS ...............   7.16%         7.75%            6.97%         48 OUT OF 123
5 YEARS ...............   7.47%         7.79%            7.04%         16 OUT OF 82
LIFE OF FUND ..........   6.35%         6.87%           6.07%(3)       20 OUT OF 69(3)
</TABLE>

The fund's inception date was 4/1/93.

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

(2)  According to Lipper Inc., 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 20-21 for more information about returns,  the comparative  index, and
Lipper fund rankings.

[mountain graph - data below]

GROWTH OF $10,000 OVER LIFE OF FUND
Value on 3/31/99
Lehman Aggregate Bond Index        $14,896
Premium Bond                       $14,468

                                            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                 $14,527                 $14,921
12/31/98                $14,521                 $14,971
3/31/99                 $14,468                 $14,896

$10,000 investment made 4/1/93

The graph at left shows the growth of a $10,000  investment over the life of the
fund,  while the graph  below  shows the fund's  year-by-year  performance.  The
Lehman  Aggregate Bond Index is provided for  comparison in each graph.  Premium
Bond's total returns include  operating  expenses (such as transaction costs and
management  fees) that reduce  returns,  while the total 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 graph - data below]

ONE-YEAR RETURNS OVER LIFE OF FUND (PERIODS ENDED MARCH 31)
                                Lehman Aggregate
                     Premium Bond          Bond Index
DATE                   RETURN                RETURN
3/31/94                 0.92%                 2.37%
3/31/95                 4.48%                 4.99%
3/31/96                11.53%                10.79%
3/31/97                 4.57%                 4.91%
3/31/98                11.14%                11.99%
3/31/99                 5.88%                 6.49%


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 FISCAL YEAR ENDED MARCH 31, 1999?

     Premium Bond's returns were positive,  despite the difficult climate in the
financial markets over the past year. In addition,  the portfolio performed well
relative to the "A-Rated  Corporate Debt Funds" category  tracked by Lipper Inc.
For the  fiscal  year,  the fund  posted a return  of 5.88%,  while  the  Lipper
category average return was 5.03%.

     Performance  over the last six months was limited by rising interest rates.
For the six months ended March 31, 1999, Premium Bond returned -0.40%, while the
Lipper group returned  -0.96%.  The portfolio's  benchmark,  the Lehman Brothers
Aggregate Bond Index,  returned -0.16% and 6.49% over the six and twelve months,
respectively.  (See the Total Returns table on the previous page for  additional
performance comparisons.)

WHAT STRATEGIES DID YOU PURSUE OVER THE PAST SIX MONTHS?

     We emerged from a defensive  position that we adopted  during the turbulent
second  half of 1998,  adding  more  higher-yielding  corporate  securities.  We
believed  corporate bonds offered very attractive buying  opportunities  because
their prices had been beaten down  significantly  during the market  upheaval in
the third quarter of 1998.  Corporate  bonds,  for example,  represented  26% of
assets six months ago, but comprised 32% at the end of March.

     At the same time,  we reduced the fund's  exposure  to Treasury  securities
from 33% of  assets  at the end of  September  to 24% by the end of  March.  Our
high-quality government- and agency-backed mortgage holdings were little changed
at 25% of assets. (See the Portfolio Composition by Security Type charts on page
6.)

DID THESE ASSET ALLOCATION SHIFTS HELP THE FUND'S PERFORMANCE?

     Yes. The change in positioning  paid off in the first quarter of 1999, when
Treasurys were the worst-performing  sector of the U.S. bond market.  Corporates
and mortgage-backed  securities,  on the other hand,  performed relatively well.
The Fed's rate cuts in late 1998 brightened the picture for corporations because
lower rates reduced  borrowing costs. In addition,  U.S.  economic growth surged
despite turmoil overseas.  Those factors gave investors renewed  confidence that
corporate earnings would stay strong.

WHERE DID YOU FIND BUYING OPPORTUNITIES IN THE CORPORATE MARKET?

     In  1998,   our   focus   was  on  more   defensive   industries   such  as
telecommunications,  energy,  and utilities.  Companies in those sectors tend to
derive most of their profits domestically and provide more stable returns during
periods of  economic  upheaval.  That proved to be helpful  during the  market's
downdraft in 1998.

[right margin]

"THE PORTFOLIO PERFORMED WELL RELATIVE TO THE 'A-RATED CORPORATE DEBT FUNDS'
CATEGORY TRACKED BY LIPPER INC."

PORTFOLIO AT A GLANCE
                               3/31/99           3/31/98
NUMBER OF SECURITIES             138               98
WEIGHTED AVERAGE
   MATURITY                    8.2 YRS          10.7 YRS
AVERAGE DURATION               4.7 YRS           4.7 YRS
EXPENSE RATIO                   0.45%             0.45%

YIELD AS OF MARCH 31, 1999
   30-DAY SEC YIELD             5.80%

Investment terms are defined in the Glossary on pages 21-22.


                                                  www.americancentury.com      5


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

     More recently we started to favor bonds of cyclical  companies,  which tend
to benefit  most during  times of  economic  strength.  When fears of  recession
crippled  the market in the third  quarter of 1998,  these  bonds were  severely
punished  and  experienced  sharp  price  declines.  Investors  have become more
comfortable  with the prospects of these companies  because  economic growth has
been consistently strong.  Renewed interest in this sector helped performance in
recent months.

ASSET-BACKED SECURITIES NOW REPRESENT 10% OF ASSETS. WHAT WAS THE ATTRACTION?

     We believed  asset-backed  bonds  offered  exceptional  values  relative to
Treasurys,  so we  increased  our  stake in these  securities  over the past six
months. Premium Bond's asset-backed holdings include commercial  mortgage-backed
securities  (CMBS),  as well as receivables  from  automobile,  credit card, and
equipment  loans.  CMBS are attractive  because they offer strong credit quality
with less prepayment risk than typical mortgage-backed securities.

     Within  the  asset-backed  component,  CMBS  represent  about 3-4% of total
assets.  We may increase  that  segment  because it appears our  benchmark,  the
Lehman  Brothers  Aggregate Bond Index,  will include a CMBS component  starting
this summer. This move will provide more investor interest and liquidity to that
segment of the market. We think it makes sense to take a position in these bonds
now while their prices are still comparatively low.

YOU MENTIONED THAT MORTGAGE-BACKED SECURITIES MAKE UP ABOUT A QUARTER OF ASSETS.
CAN YOU TALK A LITTLE MORE ABOUT THEM?

     Our 25% position in  high-quality  government- and  agency-backed  mortgage
securities is roughly  neutral to the mortgage  weighting in the index. In 1998,
declining  interest  rates  hurt  mortgage-backeds--lower  rates led to a record
number of mortgage  prepayments.  But higher rates since October have  gradually
slowed refinancing activity. Unfortunately, higher rates also cause the duration
of  mortgage-backed  bonds to extend,  which  hurts  performance  when rates are
rising.

CAN YOU EXPLAIN A LITTLE MORE ABOUT DURATION AND WHY IT'S IMPORTANT?

     Duration  measures a bond's or bond  portfolio's  sensitivity to changes in
interest rates.  The longer the duration,  the more you gain in price when rates
fall,  and the more you lose when rates rise.  A shorter  duration  means a bond
portfolio's share price fluctuates less when rates change. So, ideally, you want
to lengthen  duration when interest rates are falling and shorten  duration when
rates are rising.

HOW DID YOU MANAGE THE PORTFOLIO'S DURATION?

     We made few changes to duration over the past six months,  keeping it about
in line with that of the Lehman  Aggregate  Bond  Index at around 4.7 years.  In
general,  we make only  modest  adjustments  to  duration  over time,  typically
keeping it within about 10% or so of the benchmark's duration.  Rather than make
big bets on the direction of interest rates, we try to enhance fund  performance
through asset allocation decisions and careful credit analysis.

[left margin]

"WE BELIEVED ASSET-BACKED BONDS OFFERED EXCEPTIONAL VALUES RELATIVE TO
TREASURYS, SO WE INCREASED OUR STAKE IN THESE SECURITIES OVER THE PAST SIX
MONTHS."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

AS OF MARCH 31, 1999
U.S. Treasury Securities     24%
Corporate Bonds              32%
Mortgage-Backed Securities   25%
Asset-Backed Securities      10%
Gov't. Agency Securities      6%
Other                         3%

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%

Security types are defined on pages 21-22.


6      1-800-345-2021


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

AS OF SEPTEMBER 1, 1998, PREMIUM  BOND WAS ALLOWED TO INVEST IN SECURITIES RATED
BB. HAVE YOU BEEN VERY ACTIVE IN THAT AREA?

     BB bonds  accounted  for around 5% of assets at the end of the fiscal year,
so we haven't been very aggressive yet in that segment of the market. We believe
the securities we purchased either offered  substantial value or were candidates
for a credit  upgrade.  An example of a BB investment in Premium Bond at the end
of the year is Owens Illinois--a bond we think has a lot of upside potential.

     Overall,   we've   maintained   the   portfolio's   high   average   credit
quality--which was slightly better than AA--despite reducing the fund's Treasury
holdings.

WHAT'S YOUR INTEREST RATE OUTLOOK?

     We are not as optimistic  as many others in the market.  If we look back at
the  dramatic  drop  in  interest  rates  in  1998,  we can  see  that it was an
exaggerated move caused by abnormal  occurrences,  such as the rapid liquidation
of positions by highly  leveraged hedge funds. We don't  anticipate that kind of
steep decline in interest rates happening again anytime soon. Economic growth in
the U.S.  remains  very  strong,  and we are  starting  to see signs of recovery
around the globe. This underlying economic strength may be accompanied by modest
inflation.  In that case, we could see rates  increase  slightly.  On a positive
note, we anticipate  less  interest  rate  volatility  than we saw over the past
year.

HOW WILL THIS OUTLOOK INFLUENCE PREMIUM BOND'S POSITIONING?

     With the continued  strength of the economy and interest rates trading in a
fairly narrow range or rising modestly,  we expect the non-Treasury  segments of
the bond market to perform best in the coming months.  We'll likely  underweight
Treasurys  relative  to our  benchmark  while  maintaining  a  larger  stake  in
corporate  bonds  and  asset-backed  securities.  We also  anticipate  keeping a
neutral  weighting in  higher-yielding  mortgage-backed  and  government  agency
securities.

[right margin]

"ON A POSITIVE NOTE, WE ANTICIPATE LESS INTEREST RATE VOLATILITY THAN WE SAW
OVER THE PAST YEAR."

PORTFOLIO COMPOSITION BY CREDIT RATING
                % OF FUND INVESTMENTS
               AS OF             AS OF
              3/31/99           9/30/98
AAA             67%               75%
AA               4%               3%
A                9%               8%
BBB             15%               14%
BB               5%               --

Ratings provided by Standard & Poor's.  See Credit Rating  Guidelines on page 20
for more information.

"WE'VE MAINTAINED THE PORTFOLIO'S HIGH AVERAGE CREDIT QUALITY--WHICH WAS
SLIGHTLY BETTER THAN AA--DESPITE REDUCING THE FUND'S TREASURY HOLDINGS."


                                                  www.americancentury.com      7


Premium Bond--Schedule of Investments
- --------------------------------------------------------------------------------

MARCH 31, 1999

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
U.S. TREASURY SECURITIES--23.6%
               $  300,000  U.S. Treasury Notes, 7.125%,
                              9/30/99                             $    303,563
                  400,000  U.S. Treasury Notes, 7.75%,
                              1/31/00                                  409,299
                4,000,000  U.S. Treasury Notes, 5.50%,
                              2/29/00                                4,023,116
                1,000,000  U.S. Treasury Notes, 6.375%,
                              5/15/00                                1,015,618
                1,000,000  U.S. Treasury Notes, 4.625%,
                              11/30/00                                 994,332
                1,000,000  U.S. Treasury Notes, 5.50%,
                              12/31/00                               1,008,355
                3,700,000  U.S. Treasury Notes, 6.625%,
                              7/31/01                                3,828,123
                1,000,000  U.S. Treasury Notes, 7.50%,
                              11/15/01                               1,058,618
                1,200,000  U.S. Treasury Notes, 7.875%,
                              11/15/04                               1,349,041
                  250,000  U.S. Treasury Notes, 7.00%,
                              7/15/06                                  273,658
                1,000,000  U.S. Treasury Bonds, 12.00%,
                              8/15/08                                1,456,228
                1,200,000  U.S. Treasury Bonds, 9.25%,
                              2/15/16                                1,632,125
                1,400,000  U.S. Treasury Bonds, 8.875%,
                              8/15/17                                1,865,167
                  750,000  U.S. Treasury Bonds, 9.125%,
                              5/15/18                                1,025,010
                  400,000  U.S. Treasury Bonds, 7.125%,
                              2/15/23                                  462,291
                1,600,000  U.S. Treasury Bonds, 7.50%,
                              11/15/24                               1,938,359
                  475,000  U.S. Treasury Bonds, 7.625%,
                              2/15/25                                  584,449
                  300,000  U.S. Treasury Bonds, 6.00%,
                              2/15/26                                  305,216
                  650,000  U.S. Treasury Bonds, 6.375%,
                              8/16/27                                  695,976
                  400,000  U.S. Treasury Bonds, 5.25%,
                              11/15/28                                 373,829
                                                                 --------------
TOTAL U.S. TREASURY SECURITIES                                      24,602,373
                                                                 --------------
   (Cost $23,972,520)

U.S. GOVERNMENT AGENCY SECURITIES--6.2%
                1,500,000  FHLB, 5.50%, 8/13/01                      1,507,809
                  500,000  FHLMC, 7.09%, 11/24/06                      500,514
                1,000,000  FHLMC, 5.75%, 4/15/08                       993,027
                1,000,000  FNMA MTN, 5.83%, 2/2/04                     992,035
                1,000,000  FNMA MTN, 5.54%, 2/5/04                     984,935

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

               $  500,000  FNMA MTN, 7.00%, 2/20/07               $    515,960
                1,000,000  FNMA MTN, 5.74%, 1/21/09                    958,685
                                                                 --------------
TOTAL U.S GOVERNMENT
AGENCY SECURITIES                                                    6,452,965
                                                                 --------------
   (Cost $6,501,084)

MORTGAGE-BACKED SECURITIES(1)--25.2%
                  776,998  FHLMC Pool #E68523, 6.50%,
                              12/1/12                                  786,898
                  130,961  FHLMC Pool #D75034, 8.50%,
                              10/1/26                                  137,808
                  841,029  FHLMC Pool #C00553, 7.00%,
                              9/1/27                                   854,981
                  897,445  FHLMC Pool #C00578, 6.50%,
                              1/1/28                                   895,602
                1,000,000  FHLMC Pool #C00731, 6.50%,
                              3/1/29                                   997,849
                1,085,967  FNMA Pool #272894, 6.00%,
                              2/1/09                                 1,082,465
                  541,973  FNMA Pool #392607, 7.00%,
                              7/1/12                                   554,689
                  196,470  FNMA Pool #426130, 6.00%,
                              5/1/13                                   195,237
                  782,470  FNMA Pool #426773, 6.00%,
                              7/1/13                                   777,561
                  696,354  FNMA Pool #252211, 6.00%,
                              1/1/29                                   677,810
                  500,797  FNMA Pool #252212, 6.50%,
                              1/1/29                                   499,192
                  757,537  FNMA Pool #405425, 7.00%,
                              12/1/27                                  769,753
                  641,377  FNMA Pool #413812, 6.50%,
                              1/1/28                                   639,445
                1,538,211  FNMA Pool #406904, 7.50%,
                              4/1/28                                 1,582,468
                1,568,292  FNMA Pool #426069, 7.00%,
                              5/1/28                                 1,592,649
                  997,115  FNMA Pool #437421, 6.00%,
                              9/1/28                                   970,562
                  301,697  FNMA Pool #450619, 6.00%,
                              12/1/28                                  293,663
                  503,057  FNMA Pool #453956, 6.00%,
                              12/1/28                                  489,660
                1,108,820  FNMA Pool #454947, 6.00%,
                              12/1/28                                1,079,292
                  569,167  GNMA Pool #230356, 7.50%,
                              8/20/17                                  586,888
                1,071,473  GNMA Pool #313107, 7.00%,
                              11/15/22                               1,092,354
                   45,501  GNMA Pool #407141, 9.25%,
                              2/15/25                                   48,833
                  284,182  GNMA Pool #408099, 8.75%,
                              3/15/25                                  302,453

                                              See Notes to Financial Statements


8      1-800-345-2021


Premium Bond--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
MARCH 31, 1999

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

              $    41,779  GNMA Pool #407254, 9.25%,
                              3/15/25                             $     44,838
                  560,371  GNMA Pool #780412, 7.50%,
                              8/15/26                                  577,769
                  600,400  GNMA Pool #423986, 8.00%,
                              8/15/26                                  625,904
                  110,080  GNMA Pool #432437, 7.50%,
                              4/15/27                                  113,480
                  658,124  GNMA Pool #447692, 7.50%,
                              5/15/27                                  678,449
                  758,096  GNMA Pool #423061, 8.00%,
                              6/15/27                                  790,344
                  344,268  GNMA Pool #443782, 7.50%,
                              11/15/27                                 354,900
                   99,855  GNMA Pool #461011, 7.50%,
                              11/15/27                                 102,939
                  608,328  GNMA Pool #467626, 7.00%,
                              2/15/28                                  618,458
                  497,220  GNMA Pool #458862, 7.50%,
                              2/15/28                                  512,448
                  477,189  GNMA Pool #436277, 6.50%,
                              3/15/28                                  475,689
                  833,661  GNMA Pool #471859, 7.00%,
                              4/15/28                                  847,544
                   33,133  GNMA Pool #455126, 6.50%,
                              5/15/28                                   33,029
                1,984,258  GNMA Pool #458887, 6.50%,
                              5/15/28                                1,978,018
                  490,330  GNMA Pool #463891, 6.50%,
                              5/15/28                                  488,788
                1,100,000  GNMA Pool #469811, 7.00%,
                              12/15/28                               1,118,318
                                                                 --------------
TOTAL MORTGAGE-BACKED SECURITIES                                    26,269,027
                                                                 --------------
   (Cost $26,152,815)

ASSET-BACKED SECURITIES(1)--9.6%
                1,000,000  Case Equipment Loan Trust,
                              Series 1998 B, Class A4 SEQ,
                              5.92%, 10/15/05                        1,000,125
                1,000,000  CIT RV Trust, Series 1997 A,
                              Class A6, 6.35%, 4/15/11               1,014,845
                  750,000  CIT RV Trust, Series 1998 A,
                              Class A4 SEQ, 6.09%,
                              2/15/12                                  757,376
                1,000,000  Comed Transitional Funding Trust,
                              Series 1998-1, Class A6 SEQ,
                              5.63%, 6/25/09                           974,905
                  957,104  First Union-Lehman Brothers
                              Commercial Mortgage,
                              Series 1998 C2, Class A1 SEQ,
                              6.28%, 6/18/07                           966,154
                1,000,000  GMAC Commercial Mortgage Securities
                              Inc., Series 1999 C1, Class A2
                              SEQ, 6.18%, 5/15/33                      994,455

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

               $  177,350  Green Tree Financial Corp.,
                              Series 1995-7, Class A3,
                              6.35%, 11/15/26                     $    177,767
                  700,000  Money Store (The) Home Equity
                              Trust, Series 1994 B, Class A4
                              SEQ, 7.60%, 7/15/21                      720,318
                1,000,000  Money Store (The) Home Equity
                              Trust, Series 1997 C,
                              Class AF6 SEQ, 6.67%,
                              2/15/25                                1,015,095
                  734,252  Nationslink Funding Corp.,
                              Series 1998-2, Cl A1 SEQ,
                              6.00%, 11/20/07                          731,833
                  204,117  Textron Financial Corp.
                              Receivables Trust,
                              Series 1997 A, Class A, 6.05%,
                              3/16/09 (Acquired 9/18/97,
                              Cost $203,847)(2)                        204,886
                  500,000  United Companies Financial Corp.,
                              Home Equity Loan,
                              Series 1996 D1, Class A5,
                              6.92%, 10/15/18                          510,028
                  500,000  United Companies Financial Corp.,
                              Home Equity Loan,
                              Series 1997 C, Class A7,
                              6.85%, 1/15/29                           511,348
                  356,544  World Omni Automobile Lease
                              Securitization, Series 1996 B,
                              Class A2, 6.20%, 11/15/02                357,444
                                                                 --------------
TOTAL ASSET-BACKED SECURITIES                                        9,936,579
                                                                 --------------
   (Cost $9,904,575)

CORPORATE BONDS--32.4%
AIRLINES--0.4%
                  442,948  Delta Air Lines, Inc., 7.54%,
                              10/11/11                                 459,135
                                                                 --------------
AUTOMOBILES & AUTO PARTS--0.3%
                  350,000  General Motors Corp., 7.00%,
                              6/15/03                                  363,416
                                                                 --------------
BANKING--2.2%
                  250,000  Corestates Capital Corp., 5.875%,
                              10/15/03                                 249,261
                  500,000  Fleet National Bank, 5.75%,
                              1/15/09                                  478,694
                  500,000  National Bank of Canada,
                              8.125%, 8/15/04                          535,044
                  500,000  NationsBank Corporation, 6.125%,
                              7/15/04                                  504,982
                  500,000  U.S. Bank NA, 5.70%, 12/15/08               478,782
                                                                 --------------
                                                                     2,246,763
                                                                 --------------

See Notes to Financial Statements


                                                  www.americancentury.com      9


Premium Bond--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
MARCH 31, 1999

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
BROADCASTING & MEDIA--1.2%
               $  750,000  British Sky Broadcasting, 6.875%,
                              2/23/09                             $    742,263
                  500,000  CSC Holdings Inc., 7.625%,
                              7/15/18                                  503,183
                                                                 --------------
                                                                     1,245,446
                                                                 --------------
BUSINESS SERVICES & SUPPLIES--0.6%
                  650,000  LCI International, Inc., 7.25%,
                              6/15/07                                  665,185
                                                                 --------------
CHEMICALS & RESINS--1.0%
                  300,000  ARCO Chemical Co., 10.25%,
                              11/1/10                                  324,554
                  700,000  Monsanto Co., 6.60%, 12/1/28
                              (Acquired 12/4/98, Cost
                              $697,480)(2)                             674,407
                                                                 --------------
                                                                       998,961
                                                                 --------------
ELECTRICAL & ELECTRONIC
COMPONENTS--0.2%
                  200,000  Anixter International Inc., 8.00%,
                              9/15/03                                  206,895
                                                                 --------------
ENERGY (PRODUCTION & MARKETING)--1.9%
                  750,000  Enron Corp., 6.625%, 11/15/05               756,905
                  500,000  K N Energy, Inc., 6.45%,
                              11/30/01                                 507,095
                  700,000  USX Corp., 6.85%, 3/1/08                    686,278
                                                                 --------------
                                                                     1,950,278
                                                                 --------------
ENERGY (SERVICES)--0.7%
                  750,000  Petroleum Geo-Services ASA,
                              7.125%, 3/30/28                          705,182
                                                                 --------------
FINANCIAL SERVICES--4.7%
                  500,000  Associates Corp., N.A., 6.625%,
                              6/15/05                                  514,866
                1,000,000  Citigroup Inc., 5.80%, 3/15/04              995,723
                1,000,000  Comdisco, Inc., 6.375%,
                              11/30/01                               1,006,293
                1,000,000  Ford Motor Credit Co., 6.125%,
                              4/28/03                                1,008,690
                  500,000  Merrill Lynch & Co., Inc., 6.50%,
                              4/1/01                                   508,342
                  300,000  Paine Webber Group Inc., 7.875%,
                              2/15/03                                  314,569
                  500,000  Toyota Motor Credit Corp., 5.625%,
                              11/13/03                                 497,471
                                                                 --------------
                                                                     4,845,954
                                                                 --------------
FOOD & BEVERAGE--0.9%
                1,000,000  Pepsico, Inc., 5.625%, 2/17/09
                              (Acquired 2/3/99, Cost
                              $995,670)(2)                             966,544
                                                                 --------------

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
INSURANCE--1.9%
               $1,000,000  Conseco Financing Trust II, 8.70%,
                              11/15/26                            $    949,068
                1,000,000  Conseco Inc., 6.40%, 6/15/01                987,673
                                                                 --------------
                                                                     1,936,741
                                                                 --------------
MACHINERY & EQUIPMENT--0.7%
                  750,000  Caterpillar Financial Services Corp.,
                              5.90%, 9/10/02                           751,110
                                                                 --------------
METALS & MINING--0.5%
                  450,000  Barrick Gold Corp., 7.50%,
                              5/1/07                                   475,858
                                                                 --------------
OFFICE EQUIPMENT & SUPPLIES--0.3%
                  350,000  Xerox Capital Trust, 8.00%,
                              2/1/27 (Acquired 7/17/97,
                              Cost $364,084)(2)                        360,682
                                                                 --------------
PACKAGING & CONTAINERS--0.9%
                1,000,000  Owens-Illinois Inc., 7.15%,
                              5/15/05                                  987,780
                                                                 --------------
PAPER & FOREST PRODUCTS--0.7%
                  750,000  Abitibi-Consolidated Inc., 7.40%,
                              4/1/18                                   709,209
                                                                 --------------
RAILROAD--1.3%
                1,000,000  Norfolk Southern Corp., 6.95%,
                              5/1/02                                 1,024,809
                  350,000  Norfolk Southern Corp., 7.90%,
                              5/15/97                                  392,111
                                                                 --------------
                                                                     1,416,920
                                                                 --------------
REAL ESTATE--1.4%
                  500,000  Chelsea GCA Realty Partners,
                              7.25%, 10/21/07                          470,039
                  450,000  Price REIT, Inc. (The), 7.25%,
                              11/1/00                                  458,076
                  500,000  Spieker Properties, Inc., 6.80%,
                              12/15/01                                 506,409
                                                                 --------------
                                                                     1,434,524
                                                                 --------------
RETAIL (APPAREL)--1.0%
                  400,000  Saks Holdings, Inc., 7.25%,
                              12/1/04                                  407,531
                  600,000  Saks Inc., 8.25%, 11/15/08                  646,099
                                                                 --------------
                                                                     1,053,630
                                                                 --------------
RETAIL (FOOD & DRUG)--1.0%
                1,000,000  Rite Aid Corp., 6.70%, 12/15/01           1,012,841
                                                                 --------------
RETAIL (GENERAL MERCHANDISE)--1.0%
                  600,000  Fred Meyer Inc., 7.45%, 3/1/08              634,696
                  300,000  Sears, Roebuck & Co., Inc.,
                              9.375%, 11/1/11                          374,466
                                                                 --------------
                                                                     1,009,162
                                                                 --------------

                                              See Notes to Financial Statements


10      1-800-345-2021


Premium Bond--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
MARCH 31, 1999

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
TELEPHONE COMMUNICATIONS--3.7%
               $  750,000  Cable & Wireless Communications
                              plc, 6.625%, 3/6/05                 $    757,783
                  500,000  Cable & Wireless Communications
                              plc, 6.75%, 12/1/08                      504,879
                  500,000  Cincinnati Bell Inc., 6.30%,
                              12/1/28                                  474,938
                  500,000  MCI WorldCom, Inc., 8.875%,
                              1/15/01                                  538,467
                  300,000  MCI WorldCom, Inc., 7.55%,
                              4/1/04                                   319,781
                  750,000  MCI WorldCom, Inc., 6.40%,
                              8/15/05                                  760,852
                  500,000  Sprint Capital Corp., 6.875%,
                              11/15/28                                 494,649
                                                                 --------------
                                                                     3,851,349
                                                                 --------------
UTILITIES--1.7%
                  350,000  CalEnergy Co. Inc., 7.23%,
                              9/15/05                                  362,510
                  500,000  Columbia Energy Group, 6.80%,
                              11/28/05                                 511,446
                  400,000  Duke Energy Corp., 6.875%,
                              8/1/23                                   391,402
                  500,000  Yorkshire Power Finance, Series B,
                              6.15%, 2/25/03 (Acquired
                              2/19/98, Cost $500,000)(2)               500,369
                                                                 --------------
                                                                     1,765,727
                                                                 --------------

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
WIRELESS COMMUNICATIONS--2.2%
               $1,000,000  AirTouch Communications, Inc.,
                              7.125%, 7/15/01                     $  1,028,594
                1,000,000  TCI Communications, Inc., 8.75%,
                              8/1/15                                 1,222,968
                                                                 --------------
                                                                     2,251,562
                                                                 --------------
TOTAL CORPORATE BONDS                                               33,670,854
                                                                 --------------
   (Cost $33,662,299)

SOVEREIGN GOVERNMENTS & AGENCIES--1.1%
                  550,000  Province of British Columbia
                              5.375%, 10/29/08                         525,617
                  500,000  Hydro-Quebec, 8.05%, 7/7/24                 578,874
                                                                 --------------
TOTAL SOVEREIGN GOVERNMENTS
& AGENCIES                                                           1,104,491
                                                                 --------------
   (Cost $1,087,535)

TEMPORARY CASH INVESTMENTS--1.9%
   2,033,000 Units of Participation in Chase Vista
    Prime Money Market Fund (Institutional
    Shares)                                                          2,033,000
                                                                 --------------
   (Cost $2,033,000)

TOTAL INVESTMENT SECURITIES--100.0%                               $104,069,289
                                                                 ==============
   (Cost $103,313,828)

NOTES TO SCHEDULE OF INVESTMENTS

FHLB = Federal Home Loan Bank

FHLMC = Federal Home Loan Mortgage Corporation

FNMA = Federal National Mortgage Association

GNMA = Government National Mortgage Association

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 March 31, 1999,  was  $2,706,888,
     which represented 2.6% 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 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
- --------------------------------------------------------------------------------

MARCH 31, 1999

ASSETS
Investment securities, at value
  (identified cost of $103,313,828)
  (Note 3) .................................................        $104,069,289
Cash .......................................................             232,635
Interest receivable ........................................           1,333,417
                                                                    ------------
                                                                     105,635,341
                                                                    ------------

LIABILITIES
Disbursements in excess
  of demand deposit cash ...................................               3,549
Payable for capital shares redeemed ........................             219,279
Accrued management fees (Note 2) ...........................              39,953
Dividends payable ..........................................              88,638
                                                                    ------------
                                                                         351,419
                                                                    ------------
Net Assets .................................................        $105,283,922
                                                                    ============

CAPITAL SHARES,
$0.01 PAR VALUE
Authorized .................................................         100,000,000
                                                                    ============
Outstanding ................................................          10,428,722
                                                                    ============
Net Asset Value Per Share ..................................        $      10.10
                                                                    ============

NET ASSETS CONSIST OF:
Capital (par value and paid in surplus) ....................        $104,516,510
Accumulated undistributed
  net realized gain on investments .........................              11,951
Net unrealized appreciation
  on investments (Note 3) ..................................             755,461
                                                                    ------------
                                                                    $105,283,922
                                                                    ============

- --------------------------------------------------------------------------------
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 down 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  breakdown  tells  you the  value  of net  assets  that are
performance-related,  such as investment  gains or losses,  and the value of net
assets that are not related to performance,  such as shareholder investments and
redemptions.

                                              See Notes to Financial Statements


12      1-800-345-2021


Statement of Operations
- --------------------------------------------------------------------------------

YEAR ENDED MARCH 31, 1999

INVESTMENT INCOME
Income:
Interest ..................................................         $ 5,874,471
                                                                    -----------
Expenses (Note 2):
Management fees ...........................................             429,782
Directors' fees and expenses ..............................                 818
                                                                    -----------
                                                                        430,600
                                                                    -----------
Net investment income .....................................           5,443,871
                                                                    -----------

REALIZED AND UNREALIZED
GAIN (LOSS) ON INVESTMENTS
(NOTE 3)
Net realized gain on investments ..........................             121,024
Change in net unrealized
  appreciation on investments .............................            (511,967)
                                                                    -----------
Net realized and unrealized
  loss on investments .....................................            (390,943)
                                                                    -----------
Net Increase in Net Assets
  Resulting from Operations ...............................         $ 5,052,928
                                                                    ===========

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

Fund OPERATIONS include:

* 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
- --------------------------------------------------------------------------------

YEARS ENDED MARCH 31, 1999 AND MARCH 31, 1998

Increase in Net Assets                                  1999            1998

OPERATIONS
Net investment income .........................   $   5,443,871    $  3,471,249
Net realized gain on investments ..............         121,024         817,782
Change in net unrealized appreciation
  (depreciation) on investments ...............        (511,967)      1,701,053
                                                  -------------    ------------
Net increase in net assets
  resulting from operations ...................       5,052,928       5,990,084
                                                  -------------    ------------

DISTRIBUTIONS TO SHAREHOLDERS
From net investment income ....................      (5,465,768)     (3,471,249)
From net realized gains
  on investment transactions ..................        (489,078)       (387,844)
                                                  -------------    ------------
Decrease in net assets
  from distributions ..........................      (5,954,846)     (3,859,093)
                                                  -------------    ------------

CAPITAL SHARE TRANSACTIONS
Proceeds from shares sold .....................      78,926,913      72,857,318
Proceeds from reinvestment
  of distributions ............................       5,886,692       3,796,289
Payments for shares redeemed ..................     (43,798,905)    (35,363,449)
                                                  -------------    ------------
Net increase in net assets
  from capital share transactions .............      41,014,700      41,290,158
                                                  -------------    ------------
Net increase in net assets ....................      40,112,782      43,421,149

NET ASSETS
Beginning of year .............................      65,171,140      21,749,991
                                                  -------------    ------------
End of year ...................................   $ 105,283,922    $ 65,171,140
                                                  =============    ============
Undistributed net investment income ...........            --      $     21,897
                                                  =============    ============

TRANSACTIONS IN SHARES OF THE FUND
Sold ..........................................       7,705,359       7,303,108
Issued in reinvestment of distributions .......         574,382         376,344
Redeemed ......................................      (4,269,904)     (3,489,976)
                                                  -------------    ------------
Net increase ..................................       4,009,837       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
- --------------------------------------------------------------------------------

MARCH 31, 1999

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.  Premium Bond Fund (the fund) is one
of the three funds issued by the  corporation.  The investment  objective of the
fund 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;   these  principles  may  require  the  use  of  estimates  by  fund
management.

     SECURITY  VALUATIONS -- Securities are valued through a commercial  pricing
service or at the mean of the most recent bid and asked prices.  When valuations
are not readily available,  securities are valued at fair value as determined in
accordance with procedures adopted by the Board of 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  realized  gains  and  losses  for  financial
statement  and tax purposes  and may result in  reclassification  among  certain
capital accounts.

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


                                                 www.americancentury.com      15


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

- --------------------------------------------------------------------------------
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  $104,914,045,  including U.S. Treasury and Agency obligations  totaling
$65,219,450.  Sales of investment securities,  excluding short-term investments,
totaled  $65,606,502,  including U.S. Treasury and Agency  obligations  totaling
$45,516,932.

     As of March 31, 1999, accumulated net unrealized appreciation was $753,555,
based on the aggregate  cost of  investments  for federal income tax purposes of
$103,315,734,  which  consisted of unrealized  appreciation  of  $1,365,787  and
unrealized depreciation of $612,232.

- --------------------------------------------------------------------------------
4. BANK LOANS

     Effective  December 18,  1998,  the fund,  along with  certain  other funds
managed by ACIM,  entered  into an  unsecured  $570,000,000  bank line of credit
agreement  with  Chase  Manhattan  Bank.  Borrowings  under the  agreement  bear
interest at the Federal  Funds rate plus  0.40%.  The fund may borrow  money for
temporary or emergency  purposes to fund shareholder  redemptions.  The fund did
not borrow from the line during the period  December 18, 1998 through  March 31,
1999.

- --------------------------------------------------------------------------------
5. FUND EVENTS

   The following name change became effective March 1, 1999:

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

   FUND:       Premium Bond Fund         American Century - Benham Premium
                                         Bond Fund


16      1-800-345-2021


Premium Bond--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                             FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED MARCH 31

                                           1999           1998          1997          1996          1995
PER-SHARE DATA
<S>                                    <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Year ... $     10.15   $      9.76   $      9.93   $      9.46   $      9.64
                                       -----------   -----------   -----------   -----------   -----------
Income From Investment Operations
  Net Investment Income ..............        0.59          0.61          0.61          0.61          0.59
  Net Realized and Unrealized
  Gain (Loss) on Investments .........        --            0.45         (0.17)         0.47         (0.18)
                                       -----------   -----------   -----------   -----------   -----------
  Total From Investment Operations ...        0.59          1.06          0.44          1.08          0.41
                                       -----------   -----------   -----------   -----------   -----------
Distributions
  From Net Investment Income .........       (0.59)        (0.61)        (0.61)        (0.61)        (0.59)
  From Net Realized Gains
  on Investments .....................       (0.05)        (0.06)         --            --            --
                                       -----------   -----------   -----------   -----------   -----------
  Total Distributions ................       (0.64)        (0.67)        (0.61)        (0.61)        (0.59)
                                       -----------   -----------   -----------   -----------   -----------
Net Asset Value, End of Year ......... $     10.10   $     10.15   $      9.76   $      9.93   $      9.46
                                       ===========   ===========   ===========   ===========   ===========
  Total Return(1) ....................        5.88%        11.14%         4.57%        11.53%         4.48%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses to
Average Net Assets ...................        0.45%         0.45%         0.45%         0.43%         0.45%
Ratio of Net Investment Income to
Average Net Assets ...................        5.70%         6.06%         6.20%         6.08%         6.30%
Portfolio Turnover ...................          71%          138%           63%           92%           51%
Net Assets, End of Year
(in thousands) ....................... $   105,284   $    65,171   $    21,750   $    20,280   $    10,334
</TABLE>

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

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


Independent Auditors' Report
- --------------------------------------------------------------------------------

The Board of Directors and Shareholders,
American Century Premium Reserves, Inc.:

   We have  audited  the  accompanying  statement  of  assets  and  liabilities,
including the schedule of investments,  of Premium Bond Fund (formerly  American
Century - Benham  Premium Bond Fund) (the "Fund"),  one of the funds  comprising
American Century Premium  Reserves,  Inc., as of March 31, 1999, and the related
statement of operations  for the year then ended,  the  statements of changes in
net assets for each of the two years in the period then ended, and the financial
highlights for each of the five years in the period then ended.  These financial
statements  and the financial  highlights are the  responsibility  of the Fund's
management.  Our  responsibility  is to express  an  opinion on these  financial
statements and the financial highlights based on our audits.

   We  conducted  our audits in  accordance  with  generally  accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable  assurance  about whether the financial  statements and the financial
highlights are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements.  Our procedures  included  confirmation of securities owned at March
31, 1999, by correspondence with the custodian. An audit also includes assessing
the accounting principles used and significant estimates made by management,  as
well as evaluating the overall financial statement presentation. We believe that
our audits provide a reasonable basis for our opinion.

   In our opinion,  such financial  statements and financial  highlights present
fairly, in all material respects, the financial position of Premium Bond Fund as
of March 31, 1999, the results of its  operations  for the year then ended,  the
changes in its net assets  for each of the two years in the period  then  ended,
and the financial highlights for each of the five years in the period then ended
in conformity with generally accepted accounting principles.


Deloitte & Touche LLP
Kansas City, Missouri
May 7, 1999


18      1-800-345-2021


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 from the date of
receipt  at  American  Century.  Even if you plan to  rollover  the  amount  you
withdraw to another tax-deferred  account, the withholding rate still applies to
the withdrawn  amount  unless we have received a written  notice not to withhold
federal income tax prior to the withdrawal.

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

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


                                                 www.americancentury.com      19


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

INVESTMENT PHILOSOPHY AND POLICIES

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

     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 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.  They are based on an issuer's financial strength
and ability to pay interest and principal in a timely manner.

     Securities  rated  AAA,  AA,  A, or BBB are  considered  "investment-grade"
securities,  meaning they are  relatively  safe from default.  Here are the most
common credit ratings and their definitions:

     AAA -- extremely strong ability to meet financial obligations.

     AA -- very strong ability to meet financial obligations.

     A -- strong ability to meet financial obligations.

     BBB -- good ability to meet financial obligations.

     BB  --  securities   that  are  less   vulnerable  to  default  than  other
lower-quality issues but do not quite meet investment-grade standards.

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

[left margin]

INVESTMENT TEAM LEADERS
  PORTFOLIO MANAGERS
     BUD HOOPS
     JEFF HOUSTON
  CREDIT RESEARCH MANAGER
     GREG AFIESH


20      1-800-345-2021


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

RETURNS

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

* AVERAGE ANNUAL RETURNS  illustrate the annually  compounded returns that would
have produced the fund's cumulative total returns if the fund's  performance had
been  constant  over the  entire  period.  Average  annual  returns  smooth  out
variations  in a fund's  return;  they are not the same as  fiscal  year-by-year
results.  For  fiscal  year-by-year  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  SECUR-ITIES  --  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).


                                                 www.americancentury.com      21


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

* 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).

FUND CLASSIFICATIONS

INVESTMENT OBJECTIVE

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

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

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

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

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

RISK

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

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

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

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


22      1-800-345-2021


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


                                                 www.americancentury.com      23


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


24     1-800-345-2021


[inside back cover]

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

                  RISK LEVEL - CONSERVATIVE

TAXABLE MONEY MARKETS           TAX-FREE MONEY MARKETS

Premium  Capital Reserve        FL Municipal Money Market
Prime Money Market              CA Municipal Money Market
Premium Government Reserve      CA Tax-Free Money Market
Government Agency               Tax-Free Money Market
   Money Market
Capital Preservation

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

                   RISK LEVEL - AGGRESSIVE

TAXABLE BONDS                   TAX-FREE BONDS

Target 2025*                    CA High-Yield Municipal
Target 2020*                    High-Yield Municipal
Target 2015*
Target 2010*
High-Yield
International Bond

                    RISK LEVEL - MODERATE

TAXABLE BONDS                   TAX-FREE BONDS

Long-Term Treasury              CA Long-Term Tax-Free
Target 2005*                    Long-Term Tax-Free
Bond                            CA Insured Tax-Free
Premium Bond

                   RISK LEVEL - CONSERVATIVE

TAXABLE BONDS                   TAX-FREE BONDS

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

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

                     RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY

Small Cap Quantitative
Small Cap Value

                      RISK LEVEL - MODERATE

ASSET ALLOCATION/BALANCED       DOMESTIC EQUITY        SPECIALTY

Strategic Allocation --         Equity Growth          Utilities
   Aggressive                   Equity Index           Real Estate
Balanced                        Tax-Managed Value
Strategic Allocation --         Income & Growth
   Moderate                     Value
Strategic Allocation --         Equity Income
   Conservative

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

                      RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY                 SPECIALTY              INTERNATIONAL

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

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

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

For a definition of fund categories, see the Glossary.

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

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


[back cover]

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

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

WWW.AMERICANCENTURY.COM

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

AUTOMATED INFORMATION LINE
1-800-345-8765

FAX: 816-340-7962

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

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

AMERICAN CENTURY 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.



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

9905                                                    Funds Distributor, Inc.
SH-BKT-16275                      (c)1999 American Century Services Corporation
<PAGE>
[front cover]
                                                                 MARCH 31, 1999

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

[graphic of stairs]

AMERICAN CENTURY
- --------------------
PREMIUM GOVERNMENT RESERVE
PREMIUM CAPITAL RESERVE

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


[inside front cover]

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

FOLLOWING BENHAM'S FOOTSTEPS

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

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

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

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

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

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

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

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

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

WHAT'S NEW . . .

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

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

Past performance is no guarantee of future results.

[left margin]

PREMIUM GOVERNMENT RESERVE
(TWPXX)
- --------------------------------------

PREMIUM CAPITAL RESERVE
(TCRXX)
- --------------------------------------




Our Message to You
- --------------------------------------------------------------------------------
/photo of James E. Stowers III and James E. Stowers, Jr./
James E. Stowers III, seated, with James E. Stowers, Jr.

     The U.S.  money market  experienced a remarkable  reversal  during the year
ended March 31, 1999.  When we last addressed you in the  semiannual  report for
the Premium  Government  Reserve and Premium Capital Reserve funds, money market
yields had just plunged as investors rushed to the relative safety and liquidity
of  short-term  securities.  Investors  were  spooked  by  global  economic  and
financial  turmoil,  which also motivated the Federal Reserve (the U.S.  central
bank) to cut short-term interest rates to bolster a seemingly vulnerable U.S.
economy and help stabilize markets worldwide.

     The Fed's actions  helped turn things  around.  By January  1999,  overseas
economies were  stabilizing,  the U.S.  economy was posting  strong growth,  and
investor  confidence had rebounded.  As a result,  investors  moved out of money
market  securities in favor of stocks and  higher-yielding  bonds.  Money market
yields rose but remained significantly lower than they were a year earlier.

     At American  Century,  our focus  remained on making us easy to do business
with and on  helping  investors  reach  their  financial  goals.  In  March,  we
consolidated all our funds under the American Century name.  Though we are proud
of the venerable Twentieth Century and Benham names, we believe the change makes
it simpler for you to identify your funds.

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

     In   addition,   we've  made  some   enhancements   to  our  Web  site  (at
www.americancentury.com).  Among the new  features  are daily fund  information,
including  return and price data,  market and national  news, and a Forms Center
with access to the most-requested investor forms and applications.  You can also
sign up to receive fund prospectuses and shareholder reports electronically.

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

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

Sincerely,

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

[right margin]

                 Table of Contents
   Report Highlights ........................................................  2
   Frequently Asked
      Questions .............................................................  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
   Independent Auditors'
      Report ................................................................ 22
OTHER INFORMATION
   Retirement Account
      Information ........................................................... 23
   Background Information
      Investment Philosophy
         and Policies ....................................................... 24
      Comparative Indices ................................................... 24
      Lipper Rankings ....................................................... 24
      Investment Team
         Leaders ............................................................ 24
      Credit Rating
         Guidelines ......................................................... 24
   Glossary ................................................................. 25


                                                  www.americancentury.com      1


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

MARKET PERSPECTIVE

*   Money  market  yields  fell  during the year ended  March 31,  1999,  as the
    Federal Reserve cut short-term interest rates.

*   The Fed  lowered  rates three times in late 1998,  adding  stability  to the
    financial markets during a period of global economic turmoil.

*   Money  market  yields rose  modestly  in early 1999 as  economic  conditions
    improved.

*   We expect  short-term  interest rates to be relatively  stable in the coming
    months,  with the  three-month  Treasury  bill yield  remaining  in a narrow
    range.

PREMIUM GOVERNMENT RESERVE

*   The fund's  one-year  return as of March 31 kept pace with the return of the
    average institutional government money market fund.

*   With interest  rates falling,  we maintained a longer  average  maturity for
    much of the period to lock in higher rates.

*   New  investments  caused  the  fund's  assets  to grow by 65% in  March.  We
    invested  the new money in very  short-term  government  agency  securities,
    which caused the average maturity to shorten.

*   We continued to focus on agency  securities  issued by the Federal  National
    Mortgage Association and the Federal Home Loan Mortgage  Corporation,  which
    had higher yields because they were in greater supply.

*   We plan to maintain the fund's current neutral average maturity, but we will
    seek out  opportunities to extend the maturity when yields are at the top of
    their recent range.

PREMIUM CAPITAL RESERVE

*   The fund's  one-year  return as of March 31 kept pace with the return of the
    average institutional money market fund.

*   With interest  rates falling,  we maintained a longer  average  maturity for
    much of the period to lock in higher rates.

*   To extend the average  maturity,  we invested  in one-year  certificates  of
    deposit (CDs).

*   New investments caused the fund's assets to grow by 25% in the first quarter
    of 1999. We invested the new money in commercial  paper because it is one of
    the largest segments of the money market.

*   Because  we expect  fairly  stable  interest  rates,  we plan to  maintain a
    longer-than-normal average maturity.

[left margin]

         PREMIUM GOVERNMENT RESERVE
                  (TWPXX)
TOTAL RETURNS:              AS OF 3/31/99
    6 Months                       2.33%*
    1 Year                          4.98%
7-DAY CURRENT YIELD:                4.43%
INCEPTION DATE:                    4/1/93
NET ASSETS:                $121.3 million

           PREMIUM CAPITAL RESERVE
                  (TCRXX)
TOTAL RETURNS:              AS OF 3/31/99
    6 Months                       2.43%*
    1 Year                          5.14%
7-DAY CURRENT YIELD:                4.53%
INCEPTION DATE:                    4/1/93
NET ASSETS:                $276.0 million

* Not annualized.

See Total Returns on pages 4 and 9.
Investment terms are defined in the Glossary on pages 25-26.


2      1-800-345-2021


Money Market Funds--Frequently Asked Questions
- --------------------------------------------------------------------------------

CAN I MAKE DIRECT DEPOSITS INTO MY MONEY MARKET FUND ACCOUNT?

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

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-business-day  holding  period for U.S.  Treasury  checks,  money
orders, and travelers' checks.

IS THERE A LIMIT ON THE NUMBER OF CHECKS I CAN WRITE ON MY MONEY MARKET ACCOUNT?

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

IS THERE AN EASY WAY TO MOVE  MONEY  FROM MY MONEY  MARKET  FUND INTO A STOCK OR
BOND FUND?

     Yes.  Moving money  between  funds is called an  exchange,  and there is no
limit  on the  number  of  exchanges  you can make  out of a money  market  fund
account.  However,  there is a limit of six  exchanges  per calendar year out of
stock and bond fund accounts.

     Exchanges can be made by:

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

*    using our Automated Information Line (1-800-345-8765)*

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

*    writing us a letter

HOW DO I DECIDE  WHETHER A TAXABLE MONEY MARKET FUND OR A TAX-FREE  MONEY MARKET
FUND IS RIGHT FOR ME?

     The most important  factor to consider is your tax bracket.  Tax-free money
market funds  typically  offer lower yields than taxable  funds,  but you pay no
federal income taxes on the income from a tax-free fund.

     If you are in one of the higher federal income tax brackets, taxes will eat
up a big part of your income from a taxable  money  market  fund,  so a tax-free
investment may be better for you. If you're in a lower tax bracket, then you can
usually earn more in a taxable fund even after taxes are deducted.

     We can help you  figure it out.  If you give us a call and tell us what tax
bracket  you're in, we can tell you whether you're likely to earn more after-tax
income in a tax-free or a taxable money market fund.

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

*  Before an investor  can make an  exchange  by calling an  Investor  Relations
   Representative,  using our  Automated  Information  Line, or visiting our Web
   site, the investor first must have provided us with written  authorization to
   do so.

[right margin]

A FASTER AND EASIER WAY TO DEPOSIT MUTUAL FUND DISTRIBUTIONS

If you prefer to get your fund dividend or capital gains  distributions  sent to
you  instead of  reinvesting  them,  there are a couple of ways that you can get
access to this money faster than waiting for a check in the mail:

*    YOU CAN HAVE DISTRIBUTIONS DEPOSITED DIRECTLY INTO YOUR MONEY MARKET
     ACCOUNT. The money will be deposited the same day that the distributions
     are paid.

*    DISTRIBUTIONS CAN BE SENT ELECTRONICALLY TO YOUR BANK ACCOUNT. The money
     will be available in your bank account within three days.

Contact  our  Investor  Relations  Representatives  to set up  either  of  these
options.


                                                  www.americancentury.com      3


Premium Government Reserve--Performance
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
TOTAL RETURNS AS OF MARCH 31, 1999

                        PREMIUM         90-DAY TREASURY   INST. U.S. GOV'T. MONEY MARKET FUNDS(2)
                   GOVERNMENT RESERVE      BILL INDEX       AVERAGE RETURN     FUND'S RANKING
<S>                    <C>              <C>                  <C>               <C>
6 MONTHS(1)              2.33%                2.19%             2.35%                 --
1 YEAR                   4.98%                4.72%             5.03%            56 OUT OF 92
==============================================================================================
AVERAGE ANNUAL RETURNS
==============================================================================================
3 YEARS                  5.10%                5.01%             5.17%            50 OUT OF 75
5 YEARS                  5.08%                5.09%             5.15%            36 OUT OF 54
LIFE OF FUND             4.69%                4.76%             4.79%(3)       32 OUT OF 46(3)
</TABLE>

The fund's inception date was 4/1/93.

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

(2)  According to Lipper Inc., 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 24-25 for more information about returns,  the comparative  index, and
Lipper fund rankings.

PORTFOLIO AT A GLANCE
                             3/31/99           3/31/98
NUMBER OF SECURITIES           24                27
WEIGHTED AVERAGE
   MATURITY                  51 DAYS           49 DAYS
EXPENSE RATIO                 0.45%             0.45%

YIELDS AS OF MARCH 31, 1999
   7-DAY CURRENT YIELD        4.43%
   7-DAY EFFECTIVE YIELD      4.53%

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. The 7-day yield more closely reflects  earnings of the fund than the total
return.


4      1-800-345-2021


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

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

HOW DID PREMIUM GOVERNMENT RESERVE PERFORM DURING THE YEAR ENDED MARCH 31, 1999?

     The fund performed well,  keeping pace with its peer group.  For the fiscal
year, Premium Government Reserve returned 4.98%, compared with the 5.03% average
return of the 92 "Institutional  U.S.  Government Money Market Funds" tracked by
Lipper Inc. (See the previous page for other fund performance comparisons.)

     The fund's  performance  relative  to its Lipper  peer group is  especially
noteworthy  because  Premium  Government  Reserve is not truly an  institutional
fund. As a result,  it has a performance  disadvantage when it comes to expenses
(see the Lipper Rankings section on page 24 for more details).

THE FUND'S 7-DAY CURRENT YIELD HAS COME DOWN QUITE A BIT IN THE PAST YEAR (5.10%
TO 4.43%). WHY?

     The  decline in the fund's  yield  reflects  a general  drop in  short-term
interest rates in 1998.  Economic and financial problems in various parts of the
world led to  increased  volatility  in the global  financial  markets.  In this
environment,  many  investors  looked to U.S.  government  securities  as a safe
haven. Strong demand sent yields down sharply.

     In addition,  the Federal  Reserve (the U.S.  central bank) cut  short-term
interest  rates three times in a six-week  period to help stabilize the markets.
The Fed lowered its federal funds rate  target--a  widely  watched  barometer of
short-term  interest  rates--from  5.5% to  4.75%  between  late  September  and
mid-November.

     Global  economic  conditions  improved in early 1999, and government  money
market rates  stabilized,  hovering in a narrow  range around the federal  funds
rate target.

HOW DID YOU POSITION THE FUND IN  THIS ENVIRONMENT?

     With  rates   falling,   we  spent  much  of  the  past  year  looking  for
opportunities to extend the fund's average  maturity.  A longer average maturity
allows the  portfolio to lock in higher  yields for an extended  period of time,
delaying the effects of lower rates on the fund's yield.

     By August,  Premium  Government  Reserve's  average  maturity was around 80
days,  well above the fund's neutral  position of 50-60 days. We also lengthened
the average  maturity  during the period when the Fed cut  interest  rates three
times.

BUT THE FUND'S AVERAGE MATURITY WAS CLOSER TO 50 DAYS BY THE END OF MARCH. WHY?

     There  were  times when we allowed  Premium  Government  Reserve's  average
maturity to shorten back toward neutral.  For example, the average maturity fell
from 80 days in late December to

[right margin]

"WITH RATES FALLING, WE SPENT MUCH OF THE PAST YEAR LOOKING FOR OPPORTUNITIES
TO  EXTEND THE FUND'S AVERAGE MATURITY."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

AS OF MARCH 31, 1999
U.S. Gov't. Agency Discount Notes    82%
Repurchase Agreements                10%
U.S. Gov't. Agency Securities         8%

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

Security types are defined on pages 25-26.


                                                  www.americancentury.com      5


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

around 45 days in late  January.  The end of the year is a  volatile  period for
short-term  interest  rates,  so we stayed  out of the market for the most part,
letting the portfolio's average maturity drift in.

     In March, cash flows had a big effect on the  portfolio--the  fund's assets
fluctuated widely during the month but grew by 65% overall.  We invested most of
this new cash in very short-term  government  agency discount notes because they
tend to be more liquid (easier to buy and sell).

      So, even though we had extended the average  maturity at the  beginning of
March,  the  discount  notes  brought the  maturity  back down to a more neutral
position.  In  addition,  discount  notes  ballooned  to  more  than  80% of the
portfolio (see the charts on page 5).

DID THESE NEW INVESTMENTS CHANGE THE FUND'S AGENCY WEIGHTINGS?

     Not really.  Fannie Mae (FNMA--Federal  National Mortgage  Association) and
Freddie Mac (FHLMC--Federal  Home Loan Mortgage  Corporation) remain the largest
issuers of short-term  government agency securities,  so their yields tend to be
the most attractive.  As of March 31, 92% of Premium Government Reserve's agency
securities were issued by these two entities.

LOOKING AHEAD, WHAT'S YOUR OUTLOOK FOR SHORT-TERM INTEREST RATES?

     We think short-term  rates will be relatively  stable in the coming months.
The Fed appears to be on hold for a while--the U.S. economy is healthy enough to
keep the Fed from cutting rates,  while  inflation is low enough to keep the Fed
from raising rates. We expect yields of short-term  government agency securities
to remain in a narrow  range  around the federal  funds rate target of 4.75% for
the foreseeable future.

WHAT ARE YOUR PLANS FOR PREMIUM GOVERNMENT RESERVE OVER THE NEXT  SIX MONTHS?

     For now, we plan to maintain a neutral  average  maturity.  We'll try to do
some  "range  trading"--we'll  look to extend the average  maturity  when agency
yields  are at the top of their  recent  range,  and we'll let it  shorten  when
yields are toward the bottom of the range.

[left margin]

"THE FED APPEARS TO BE ON HOLD FOR A WHILE--THE U.S. ECONOMY IS HEALTHY ENOUGH
TO KEEP THE FED FROM CUTTING RATES, WHILE INFLATION IS LOW ENOUGH TO KEEP THE
FED FROM RAISING RATES."

[pie charts - data below]

PORTFOLIO COMPOSITION BY MATURITY

AS OF MARCH 31, 1999
1-30 days       55%
31-60 days      13%
61-90 days      14%
91-180 days     18%

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


6      1-800-345-2021


Premium Gov't. Reserve--Sched. of Investments
- --------------------------------------------------------------------------------

MARCH 31, 1999

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
U.S. GOVERNMENT AGENCY DISCOUNT NOTES(1)--81.8%
            $     490,000  FHLB Discount Notes, 4.80%,
                              5/14/99                             $    487,190
               20,000,000  FHLMC Discount Notes, 4.77%,
                              4/14/99                               19,965,550
                1,300,000  FHLMC Discount Notes, 4.70%,
                              4/15/99                                1,297,624
               14,100,000  FHLMC Discount Notes, 4.77%,
                              4/23/99                               14,058,898
                5,000,000  FHLMC Discount Notes, 4.78%,
                              4/30/99                                4,980,747
                3,570,000  FHLMC Discount Notes, 4.79%,
                              5/14/99                                3,549,575
                1,300,000  FHLMC Discount Notes, 4.66%,
                              5/18/99                                1,292,090
                2,740,000  FHLMC Discount Notes, 4.79%,
                              5/18/99                                2,722,865
                5,000,000  FHLMC Discount Notes, 4.75%,
                              5/20/99                                4,967,674
                1,000,000  FHLMC Discount Notes, 4.66%,
                              5/25/99                                  993,010
                8,000,000  FHLMC Discount Notes, 4.78%,
                              6/4/99                                 7,932,018
               11,000,000  FHLMC Discount Notes,
                              4.67%-4.70%, 8/5/99                   10,819,785
                1,160,000  FNMA Discount Notes, 4.75%,
                              4/9/99                                 1,158,776
                5,890,000  FNMA Discount Notes, 4.87%,
                              4/29/99                                5,867,667
                3,354,000  FNMA Discount Notes, 4.77%,
                              6/8/99                                 3,323,781
                5,584,000  FNMA Discount Notes, 4.78%,
                              6/10/99                                5,532,089
               10,000,000  FNMA Discount Notes, 4.76%,
                              9/16/99                                9,777,866
                                                                 --------------
TOTAL U.S. GOVERNMENT
AGENCY DISCOUNT NOTES                                               98,727,205
                                                                 --------------

Principal Amount                                                       Value
- --------------------------------------------------------------------------------
U.S. GOVERNMENT AGENCY SECURITIES(1)--8.5%
             $  1,740,000  FHLB, 6.53%, 4/22/99                   $  1,741,533
                1,500,000  FHLB, 5.72%, 5/5/99                       1,501,282
                5,000,000  FHLB, VRN, 4.77%, 4/1/99,
                              resets daily off the Fed
                              Funds rate with no caps                5,000,518
                2,000,000  FNMA MTN, 5.48%, 7/9/99                   2,002,663
                                                                 --------------
TOTAL U.S. GOVERNMENT
AGENCY SECURITIES                                                   10,245,996
                                                                 --------------

TEMPORARY CASH INVESTMENTS--9.7%
   Repurchase Agreement, Goldman Sachs & Co.,
    Inc., (U.S. Treasury obligations), in a joint
    trading account at 4.84%, dated 3/31/99,
    due 4/1/99 (Delivery value $374,050)                               374,000
   Repurchase Agreement, Morgan Stanley Group,
    Inc., (U.S. Treasury obligations), in a joint
    trading account at 4.90%, dated 3/31/99,
    due 4/1/99 (Delivery value $5,668,771)                           5,668,000
   Repurchase Agreement, State Street Boston
    Corp., (U.S. Treasury obligations), in a joint
    trading account at 4.84%, dated 3/31/99,
    due 4/1/99 (Delivery value $5,668,762)                           5,668,000
                                                                 --------------
TOTAL TEMPORARY CASH INVESTMENTS                                    11,710,000
                                                                 --------------

TOTAL INVESTMENT SECURITIES--100.0%                               $120,683,201
                                                                 ==============

See Notes to Financial Statements


                                                  www.americancentury.com      7


Premium Gov't. Reserve--Sched. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
MARCH 31, 1999

NOTES TO SCHEDULE OF INVESTMENTS

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.  Rate shown is effective
   March 31, 1999.

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

<TABLE>
<CAPTION>
TOTAL RETURNS AS OF MARCH 31, 1999

                     PREMIUM CAPITAL   90-DAY TREASURY   INSTITUTIONAL MONEY MARKET FUNDS(2)
                         RESERVE          BILL INDEX       AVERAGE RETURN   FUND'S RANKING
<S>                 <C>               <C>               <C>                <C>
6 MONTHS(1)               2.43%             2.19%              2.42%              --
1 YEAR                    5.14%             4.72%              5.15%        111 OUT OF 191
==========================================================================================
AVERAGE ANNUAL RETURNS
==========================================================================================
3 YEARS                   5.21%             5.01%              5.26%         88 OUT OF 151
5 YEARS                   5.18%             5.09%              5.23%         70 OUT OF 112
LIFE OF FUND              4.78%             4.76%             4.88%(3)       54 OUT OF 86(3)
</TABLE>

The fund's inception date was 4/1/93.

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

(2)  According to Lipper Inc., 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 24-25 for more information about returns,  the comparative  index, and
Lipper fund rankings.

PORTFOLIO AT A GLANCE
                              3/31/99           3/31/98
NUMBER OF SECURITIES            61                59
WEIGHTED AVERAGE
  MATURITY                    72 DAYS           50 DAYS
EXPENSE RATIO                  0.45%             0.45%

YIELDS AS OF MARCH 31, 1999
  7-DAY CURRENT YIELD          4.53%
  7-DAY EFFECTIVE YIELD        4.63%

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. The 7-day yield more closely reflects  earnings of the fund than the total
return.


                                                  www.americancentury.com      9


Premium Capital Reserve--Q&A
- --------------------------------------------------------------------------------
/photo of John Walsh and Denise Tabacco/

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

HOW DID THE FUND PERFORM DURING THE FISCAL YEAR ENDED MARCH 31, 1999?

     Premium Capital Reserve  performed well,  keeping pace with its peer group.
For the fiscal year,  Premium Capital Reserve returned 5.14%,  compared with the
5.15% average  return of the 191  "Institutional  Money Market Funds" tracked by
Lipper Inc. (See the previous page for other fund performance comparisons.)

     The fund's  performance  relative  to its Lipper  peer group is  especially
noteworthy  because Premium Capital Reserve is not truly an institutional  fund.
As a result,  it has a performance  disadvantage  when it comes to expenses (see
the Lipper Rankings section on page 24 for more details).

PREMIUM CAPITAL RESERVE'S 7-DAY  CURRENT YIELD DROPPED OVER THE PAST YEAR (5.22%
TO 4.53%). WHY?

     An overall  decline in interest rates provided the backdrop for the decline
in the fund's yield. In 1998,  economic and financial  problems in various parts
of the world led to increased  volatility in the global financial markets. In an
effort to stabilize  the markets,  the Federal  Reserve (the U.S.  central bank)
lowered  short-term  interest  rates  three times  between  late  September  and
mid-November.

     The Fed reduced short-term rates a total of 75 basis points (0.75%--a basis
point  equals  0.01%).  As a result,  yields on money market  securities  headed
sharply lower.

IN LIGHT OF THE DECLINE IN INTEREST RATES,  HOW DID YOU POSITION PREMIUM CAPITAL
RESERVE?

     We lengthened  the fund's average  maturity  whenever  possible  during the
year. For example, we extended from 55 days to around 70 days in August and then
again in October.  The longer  average  maturity  helped the fund  maintain  its
yield--generally  speaking,  longer-term  securities  yield more than short-term
ones, and the longer average maturity allowed us to lock in higher yields for an
extended period of time.

     We lengthened  Premium Capital  Reserve's  average  maturity again in early
1999,  but for different  reasons.  Global  economic  conditions  had stabilized
somewhat,  and with that  stabilization  came a change  in the  Fed's  stance on
interest  rates.  In  February,  the  Fed's  chairman  hinted  in  congressional
testimony that the U.S. central bank had officially shifted from a rate-lowering
bias to a neutral one.

     This  increased the  likelihood  that rates would remain  unchanged for the
near future,  so we extended Premium Capital  Reserve's average maturity to more
than 80 days in mid-February.

[left margin]

"WE LENGTHENED THE FUND'S AVERAGE MATURITY WHENEVER POSSIBLE DURING THE YEAR."

[pie charts - data below]

PORTFOLIO COMPOSITION BY SECURITY TYPE

AS OF MARCH 31, 1999
Commercial Paper         76%
Variable-Rate Notes       8%
CDs                       8%
Asset-Backed Securities   3%
Bank Notes                3%
Other                     2%

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

Security types are defined on pages 25-26.


10      1-800-345-2021


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

WHAT STEPS DID YOU TAKE TO EXTEND THE FUND'S AVERAGE MATURITY?

     Mainly,  we increased the fund's exposure to certificates of deposit (CDs).
We  invested  in CDs at the long end of  Premium  Capital  Reserve's  investment
spectrum,  maturing in about one year. By the end of March, CDs made up about 8%
of the portfolio,  up from 3% six months earlier (see the charts on the previous
page).

WHAT OTHER CHANGES DID YOU MAKE TO PREMIUM CAPITAL RESERVE'S PORTFOLIO?

     In the past few  months,  we've seen some  significant  asset  growth.  The
fund's assets  increased by 25%--from $220 million to $276 million--in the first
quarter of 1999. We invested  most of this new cash in commercial  paper because
it's one of the largest,  most-liquid segments of the money market. As a result,
the percentage of commercial paper in the portfolio grew.

     The  increase  in  commercial   paper  and  CDs  came  at  the  expense  of
variable-rate  notes,  which dropped from 18% to 8% of the portfolio in the past
six  months.  We cut  back our  holdings  partly  because  interest  rates  were
falling--the  yields of  variable-rate  notes were falling along with short-term
rates--and partly because there was little in the way of supply.

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

     The U.S.  economy  remains in excellent  health  thanks to strong  consumer
confidence  and spending.  The economy grew at a 6%  annualized  rate during the
final quarter of 1998--the fastest quarterly  expansion in over two years--and a
4.5% annual rate in the first quarter of 1999.

     Despite the rapid pace of economic growth,  inflation remains at its lowest
level in a dozen years. Labor cost increases have been modest because of greater
productivity.  In addition,  cheaper imports have prevented  domestic  companies
from raising prices.

     In light of these somewhat  mixed signals,  we think that the Fed is likely
to maintain the same  "wait-and-see"  approach toward interest rates that it has
taken so far this year.  That argues for interest rate  stability  over the near
term. But market  expectations could lead to intermittent bouts of interest rate
volatility  as investors  attempt to gauge  inflation  prospects  and future Fed
actions.

GIVEN THAT OUTLOOK, WHAT ARE YOUR IMMEDIATE PLANS FOR PREMIUM  CAPITAL RESERVE?

     Steady as she goes for now.  Because we expect a stable Fed  interest  rate
policy  for the  foreseeable  future,  we will  probably  keep  Premium  Capital
Reserve's average maturity longer than its historical norm.

[right margin]

"WE THINK THAT THE FED IS LIKELY TO MAINTAIN THE SAME 'WAIT-AND-SEE' APPROACH
TOWARD INTEREST RATES THAT IT HAS TAKEN SO FAR THIS YEAR."

PORTFOLIO COMPOSITION BY CREDIT RATING
               % OF FUND INVESTMENTS
              AS OF             AS OF
             3/31/99           9/30/98
A-1+           92%               54%
A-1             8%               46%


Ratings provided by Standard & Poor's.  See Credit Rating  Guidelines on page 24
for more information.


                                                 www.americancentury.com      11


Premium Capital Reserve--Sched. of Investments
- --------------------------------------------------------------------------------

MARCH 31, 1999

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
COMMERCIAL PAPER(1)--75.0%
BANKING--9.5%
             $  3,000,000  Banque National de Paris, 4.85%,
                              4/16/99                             $  2,993,938
               12,500,000  Generale Bank, Inc.,
                              4.80%-4.89%,
                              4/7/99-8/12/99                        12,426,526
               11,400,000  Spintab-Swedmortgage AB,
                              4.84%-5.06%,
                              4/12/99-9/10/99                       11,291,806
                                                                 --------------
                                                                    26,712,270
                                                                 --------------
CREDIT CARD & TRADE RECEIVABLES--7.3%
               10,200,000  Corporate Receivables Corp.,
                              4.83%-4.85%,
                              5/5/99-6/3/99 (Acquired
                              2/11/99-3/22/99, Cost
                              $10,098,680)(2)                       10,132,628
               10,500,000  Dakota Certificates (Citibank),
                              4.84%-4.90%,
                              4/6/99-7/9/99 (Acquired
                              1/12/99-3/22/99, Cost
                              $10,384,837)(2)                       10,452,394
                                                                 --------------
                                                                    20,585,022
                                                                 --------------
EDUCATION--0.7%
                2,000,000  Leland Stanford University, 4.72%,
                              4/20/99                                1,995,017
                                                                 --------------
ENERGY (PRODUCTION & MARKETING)--17.8%
                7,000,000  Chevron Transport Corp.,
                              4.84%-5.02%,
                              4/23/99-5/20/99                        6,964,445
                4,000,000  Chevron Transport Corp., 4.84%,
                              5/10/99 (Acquired 3/17/99,
                              Cost $3,970,960)(2)                    3,979,027
                3,000,000  Chevron U.K. Investment PLC,
                              4.84%, 4/27/99                         2,989,513
                7,290,000  Equilon Enterprises LLC,
                              4.79%-4.80%,
                              4/13/99-4/28/99                        7,272,347
                5,600,000  Koch Industries, Inc., 5.02%,
                              4/1/99 (Acquired 3/31/99,
                              Cost $5,599,219)(2)                    5,600,000
                7,500,000  Motiva Enterprises LLC,
                              4.84%-4.86%,
                              4/29/99-6/15/99                        7,446,938
                3,000,000  Motiva Enterprises LLC, 5.08%,
                              4/1/99 (Acquired 3/31/99,
                              Cost $2,999,577)(2)                    3,000,000
                1,000,000  Petrobras International Finance
                              Co., 4.82%, 9/8/99 (LOC:
                              Barclays Bank PLC)                       978,578

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

              $12,200,000  Sand Dollar Funding LLC,
                              4.83%-4.92%,
                              4/8/99-5/24/99 (Acquired
                              1/6/99-3/24/99, Cost
                              $12,056,654)(2)                     $ 12,157,809
                                                                 --------------
                                                                    50,388,657
                                                                 --------------
FINANCIAL SERVICES--28.8%
                2,400,000  Contifinancial Corp., 4.80%,
                              5/14/99                                2,386,240
                7,000,000  Countrywide Home Loans, Inc.,
                              4.87%-4.89%,
                              5/20/99-5/24/99 (Acquired
                              3/19/99-3/25/99, Cost
                              $6,942,457)(2)                         6,952,096
                3,000,000  Credit Suisse First Boston, Inc.,
                              4.88%, 4/5/99                          2,998,374
                6,000,000  Falcon Asset Securities Corp.,
                              4.84%-4.88%,
                              4/20/99-6/17/99
                              (Acquired 2/26/99-3/16/99,
                              Cost $5,935,618)(2)                    5,953,440
                3,000,000  Finans Funding Corp. II, 4.85%,
                              6/3/99 (LOC: Rabobank
                              Nederland)                             2,974,538
                5,000,000  Garanti Funding Corp., 4.79%,
                              7/29/99 (LOC: Bayerische
                              Landesbank Girozentrale)               4,920,832
                4,000,000  Garanti Funding Corp. II, 4.87%,
                              4/30/99 (LOC: Bayerische
                              Landesbank Girozentrale)               3,984,308
                7,000,000  General Electric Capital Corp.,
                              5.03%, 4/1/99                          7,000,000
                4,000,000  General Electric Financial
                              Assurance Holdings, 4.84%,
                              5/17/99                                3,975,262
                6,200,000  General Electric Financial
                              Assurance Holdings, 4.85%,
                              7/14/99 (Acquired
                              3/11/99-3/12/99, Cost
                              $6,095,860)(2)                         6,113,131
                7,000,000  Morgan Stanley Dean Witter,
                              Discover & Co., 4.84%-4.85%,
                              5/21/99-5/24/99                        6,951,679
                7,400,000  Transamerica Asset Funding Corp.,
                              4.86%-4.91%,
                              4/27/99-6/11/99 (Acquired
                              2/5/99-3/16/99, Cost
                              $7,317,071)(2)                         7,356,781
                7,400,000  WCP Funding Inc., 4.86%-4.88%,
                              5/10/99-5/19/99 (Acquired
                              3/3/99-3/24/99, Cost
                              $7,338,420)(2)                         7,356,105
               12,465,000  Windmill Funding Corp.,
                              4.81%-4.90%,
                              4/27/99-5/14/99 (Acquired
                              1/25/99-3/22/99, Cost
                              $12,356,398)(2)                       12,402,884
                                                                 --------------
                                                                    81,325,670
                                                                 --------------

                                              See Notes to Financial Statements


12      1-800-345-2021


Premium Capital Reserve--Sched. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
MARCH 31, 1999

Principal Amount                                                      Value
- --------------------------------------------------------------------------------
FOOD & BEVERAGE--1.7%
             $  5,000,000  Diageo plc, 4.80%, 9/30/99
                              (Acquired 3/31/99, Cost
                              $4,881,333)(2)                      $  4,881,333
                                                                 --------------
INDUSTRIAL--2.1%
                6,000,000  BTR Siebe plc, 4.85%-4.88%,
                              5/6/99-6/14/99 (Acquired
                              3/2/99-3/16/99, Cost
                              $5,933,878)(2)                         5,950,633
                                                                 --------------
INSURANCE--3.9%
                3,600,000  Prudential Funding Corp., 4.79%,
                              4/30/99                                3,586,109
                7,500,000  SAFECO Corp., 4.90%-4.91%,
                              4/19/99-5/7/99 (Acquired
                              1/5/99-3/8/99, Cost
                              $7,408,661)(2)                         7,475,475
                                                                 --------------
                                                                    11,061,584
                                                                 --------------
METALS & MINING--0.7%
                2,000,000  Rio Tinto America Inc., 4.85%,
                              7/2/99 (Acquired 3/30/99,
                              Cost $1,974,672)(2)                    1,975,211
                                                                 --------------
RUBBER & PLASTICS--2.5%
                7,000,000  Formosa Plastics Corp. USA,
                              4.84%-4.85%,
                              4/13/99-5/7/99 (LOC:
                              Bank of America N.T. & S.A.)           6,979,013
                                                                 --------------
TOTAL COMMERCIAL PAPER                                             211,854,410
                                                                 --------------

CORPORATE DEBT--8.8%
FINANCIAL SERVICES--2.2%
                1,100,000  Ford Motor Credit Co. MTN,
                              7.45%, 7/12/99                         1,107,946
                3,000,000  General Motors Acceptance Corp.
                              MTN, VRN, 5.07%, 6/4/99,
                              resets quarterly off the 3-month
                              LIBOR plus 0.04% with no caps          3,000,139
                2,000,000  Merrill Lynch & Co., Inc. MTN,
                              Series B, VRN, 5.21%, 4/5/99,
                              resets quarterly off the 3-month
                              LIBOR plus 0.15% with no caps          2,000,055
                                                                 --------------
                                                                     6,108,140
                                                                 --------------
INSURANCE--6.6%
                1,500,000  General American Life Insurance
                              Company, VRN, 5.14%, 4/1/99,
                              resets monthly off the 1-month
                              LIBOR plus 0.20%  with no caps
                              (Acquired 7/7/97, Cost
                              $1,500,000)(2)                         1,500,000

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

             $  4,500,000  General American Life Insurance
                              Company, VRN, 5.14%, 4/1/99,
                              resets monthly off the 1-month
                              LIBOR plus 0.20% with no caps
                              (Acquired 1/3/97, Cost
                              $4,500,000)(2)                      $  4,500,000
                3,000,000  Jackson National Life Insurance Co.,
                              VRN, 5.14%, 4/12/99, 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
                5,000,000  Transamerica Life Insurance Co.,
                              VRN, 5.09%, 4/1/99, resets monthly
                              off the 1-month LIBOR plus 0.13%
                              with no caps (Acquired 11/5/98, Cost
                              $5,000,000)(2)                         5,000,000
                3,000,000  Travelers Insurance Company (The),
                              VRN, 4.97%, 4/22/99, resets monthly
                              off the 1-month LIBOR plus 0.04% with
                              no caps (Acquired 5/22/98, Cost
                              $3,000,000)(2)                         3,000,000
                1,600,000  Travelers Insurance Company (The),
                              VRN, 4.99%, 4/9/99, resets monthly
                              off the 1-month LIBOR plus 0.04% with
                              no caps (Acquired 6/8/98, Cost
                              $1,600,000)(2)                         1,600,000
                                                                 --------------
                                                                    18,600,000
                                                                 --------------
TOTAL CORPORATE DEBT                                                24,708,140
                                                                 --------------

CERTIFICATES OF DEPOSIT--7.4%
                3,500,000  Abbey National Treasury Services
                              PLC, 5.04%, 2/8/00                     3,499,070
                4,000,000  Commerzbank AG (New York),
                              5.08%, 9/28/99                         4,000,688
                8,000,000  National Westminster Bank PLC
                              (New York), 4.98%-5.06%,
                              1/10/00-2/9/00                         7,998,348
                4,000,000  Royal Bank of Canada (New York),
                              5.07%-5.12%,
                              2/10/00-2/18/00                        3,998,822
                1,400,000  Westdeutsche Landesbank (New
                              York), 5.13%, 9/15/99                  1,400,863
                                                                 --------------
TOTAL CERTIFICATES OF DEPOSIT                                       20,897,791
                                                                 --------------

ASSET-BACKED SECURITIES(3)--3.1%
                  461,404  Americredit Automobile Receivables
                              Trust, Series
                              1998 C, Class A1 SEQ, 5.64%,
                              9/12/99                                  461,404

See Notes to Financial Statements


                                                 www.americancentury.com      13


Premium Capital Reserve--Sched. of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
MARCH 31, 1999

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

             $  1,480,855  Americredit Automobile
                              Receivables Trust, Series
                              1998 D, Class A1 SEQ, 5.20%,
                              11/12/99                            $  1,480,858
                1,887,735  Americredit Automobile Receivables
                              Trust, Series 1999 A, Class A1
                              SEQ, 4.98%, 3/12/00                    1,887,735
                  389,256  Caterpillar Financial Asset Trust,
                              Series 1998 A, Class A1 SEQ,
                              5.64%, 7/26/99                           389,256
                1,399,905  Ford Credit Auto Owner Trust,
                              Series 1999 A, Class A1 SEQ,
                              5.01%, 7/15/99                         1,399,905
                1,170,146  Household Automobile Revolving Trust I,
                              Series 1998-1, Class A1 SEQ,
                              5.33%, 12/17/99                        1,170,146
                2,000,000  WFS Financial Owner Trust, Series 1999 A,
                              Class A1 SEQ,
                              5.01%, 2/20/00                         2,000,000
                                                                 --------------
TOTAL ASSET-BACKED SECURITIES                                        8,789,304
                                                                 --------------

BANK NOTES--4.1%
                3,000,000  American Express Centurion Bank,
                              VRN, 4.88%, 4/16/99, resets monthly
                              off the 1-month LIBOR
                              minus 0.06% with no caps               3,000,000
                1,500,000  KeyBank N.A., VRN, 4.89%,
                              4/23/99, resets monthly off the
                              1-month LIBOR minus 0.045%
                              with no caps                           1,499,895

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

             $  3,000,000  U.S. Bank NA Minnesota, VRN,
                              4.91%, 4/8/99, resets monthly
                              off the 1-month LIBOR minus
                              0.06% with no caps                  $  2,999,694
                4,000,000  U.S. Bank NA Minnesota, VRN,
                              4.81%, 4/8/99, resets monthly
                              off the 1-month LIBOR minus
                              0.12% with no caps                     3,997,190
                                                                 --------------
TOTAL BANK NOTES                                                    11,496,779
                                                                 --------------

U.S. GOVERNMENT AGENCY SECURITIES--1.6%
                1,460,000  FHLB, 8.375%, 10/25/99                    1,489,518
                3,000,000  FNMA MTN, 5.78%, 4/5/00                   3,000,785
                                                                 --------------
TOTAL U.S. GOVERNMENT
AGENCY SECURITIES                                                    4,490,303
                                                                 --------------

TEMPORARY CASH INVESTMENTS(4)
   Repurchase Agreement, Morgan Stanley Group,
    Inc., (U.S. Treasury obligations), in a joint
    trading account at 4.90%, dated 3/31/99,
    due 4/1/99 (Delivery value, $122,017)                              122,000
                                                                 --------------

TOTAL INVESTMENT SECURITIES--100.0%                               $282,358,727
                                                                 ==============

NOTES TO SCHEDULE OF INVESTMENTS

FHLB = Federal Home Loan Bank

FNMA = Federal National Mortgage Association

LIBOR = London Interbank Offered Rate

LOC = Letter of Credit

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.   Rate  shown  is
     effective March 31, 1999.

(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 restricted securities at March 31, 1999,
     was  $135,338,947  which  represented  49.0%  of  net  assets.   Restricted
     securities considered illiquid represent 4.6% of net assets.

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

(4)  Investment in category is less than 0.05% of total investment securities.

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

                                                   PREMIUM           PREMIUM
MARCH 31, 1999                               GOVERNMENT RESERVE  CAPITAL RESERVE

ASSETS
Investment securities, at value
  (amortized cost and cost for federal
  income tax purposes) .......................  $  120,683,201  $   282,358,727
Cash .........................................         818,740        2,387,493
Interest receivable ..........................         167,089          702,115
                                                --------------  ---------------
                                                   121,669,030      285,448,335
                                                --------------  ---------------

LIABILITIES
Disbursements in excess of
  demand deposit cash ........................         255,747             --
Payable for capital shares redeemed ..........           5,118          253,981
Payable for investments purchased ............            --          8,878,523
Accrued management fees (Note 2) .............          36,989          100,569
Dividends payable ............................          77,566          166,585
Payable for directors' fees and expenses .....              85              225
                                                --------------  ---------------
                                                       375,505        9,399,883
                                                --------------  ---------------
Net Assets ...................................  $  121,293,525  $   276,048,452
                                                ==============  ===============

CAPITAL SHARES, $0.01 PAR VALUE
Authorized ...................................   1,000,000,000    1,000,000,000
                                                ==============  ===============
Outstanding ..................................     121,293,525      276,051,506
                                                ==============  ===============
Net Asset Value Per Share ....................  $         1.00  $          1.00
                                                ==============  ===============

NET ASSETS CONSIST OF:
Capital (par value and
  paid-in surplus) ...........................  $  121,293,525  $   276,051,506
Accumulated net realized
  loss on investments ........................            --             (3,054)
                                                --------------  ---------------
                                                $  121,293,525  $   276,048,452
                                                ==============  ===============

- --------------------------------------------------------------------------------
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 shares  outstanding  gives you the price of an individual  share,  or the net
asset value per share.

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

See Notes to Financial Statements


                                                 www.americancentury.com      15


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

                                                   PREMIUM           PREMIUM
YEAR ENDED MARCH 31, 1999                    GOVERNMENT RESERVE  CAPITAL RESERVE

INVESTMENT INCOME
Income:
Interest ....................................     $3,696,134       $11,404,919
                                                  ----------       -----------
Expenses (Note 2):
Management fees .............................        315,756           942,501
Directors' fees and expenses ................            553             1,645
                                                  ----------       -----------
                                                     316,309           944,146
                                                  ----------       -----------
Net investment income .......................      3,379,825        10,460,773
                                                  ----------       -----------
Net realized gain on investments ............          5,484             1,320
                                                  ----------       -----------
Net Increase in Net Assets
  Resulting from Operations .................     $3,385,309       $10,462,093
                                                  ==========       ===========

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

Fund OPERATIONS include:

* income earned from investments

* management fees and other expenses

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

                                              See Notes to Financial Statements


16      1-800-345-2021


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

YEARS ENDED MARCH 31, 1999 AND MARCH 31, 1998

                                  PREMIUM GOVERNMENT RESERVE          PREMIUM CAPITAL RESERVE
Increase in Net Assets               1999             1998            1999              1998

OPERATIONS
<S>                            <C>              <C>              <C>              <C>
Net investment income .........$   3,379,825    $   2,319,208    $  10,460,773    $   8,912,910
Net realized gain (loss)
  on investments ..............        5,484             (380)           1,320           (3,329)
                               -------------    -------------    -------------    -------------
Net increase in net assets
  resulting from operations ...    3,385,309        2,318,828       10,462,093        8,909,581
                               -------------    -------------    -------------    -------------

DISTRIBUTIONS TO
SHAREHOLDERS
From net investment income ....   (3,379,825)      (2,319,208)     (10,460,773)      (8,912,910)
From net realized gains on
  investment transactions .....       (5,104)            --               --               --
                               -------------    -------------    -------------    -------------
Decrease in net assets
  from distributions ..........   (3,384,929)      (2,319,208)     (10,460,773)      (8,912,910)
                               -------------    -------------    -------------    -------------

CAPITAL SHARE
TRANSACTIONS
Proceeds from shares sold .....  483,425,779      115,269,165      533,120,417      380,763,052
Proceeds from reinvestment
  of distributions ............    3,241,460        2,261,393        9,901,509        8,514,911
Payments for shares redeemed .. (409,868,798)    (111,873,462)    (449,461,484)    (360,745,777)
                               -------------    -------------    -------------    -------------
Net increase in net assets
  from capital share
  transactions ................   76,798,441        5,657,096       93,560,442       28,532,186
                               -------------    -------------    -------------    -------------
Net increase in net assets ....   76,798,821        5,656,716       93,561,762       28,528,857

NET ASSETS
Beginning of year .............   44,494,704       38,837,988      182,486,690      153,957,833
                               -------------    -------------    -------------    -------------
End of year ...................$ 121,293,525    $  44,494,704    $ 276,048,452    $ 182,486,690
                               =============    =============    =============    =============

TRANSACTIONS IN
SHARES OF THE FUNDS
Sold ..........................  483,425,779      115,269,165      533,120,417      380,763,071
Issued in reinvestment
  of distributions ............    3,241,460        2,261,393        9,901,509        8,514,911
Redeemed ...................... (409,868,798)    (111,873,462)    (449,461,484)    (360,745,777)
                               -------------    -------------    -------------    -------------
Net increase ..................   76,798,441        5,657,096       93,560,442       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
- --------------------------------------------------------------------------------

MARCH 31, 1999

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.  Premium  Government  Reserve Fund
(Government  Reserve) and 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;  these principles may require the
use of estimates by fund management.

     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,  1999,  accumulated  net  realized  short-term  capital  loss
carryovers  of $3,052 for Capital  Reserve  (expiring  2004 through 2007) may be
used to offset future taxable gains.

     The  character of  distributions  made during the year from net  investment
income or net realized gains may differ from their ultimate characterization for
federal income tax purposes.  These differences  reflect the differing character
of  certain  income  items and net  realized  gains  and  losses  for  financial
statement  and tax purposes  and may result in  reclassification  among  certain
capital accounts.

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


18      1-800-345-2021


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

- --------------------------------------------------------------------------------
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.

- --------------------------------------------------------------------------------
3. FUND EVENTS

   The following name changes became effective March 1, 1999:

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

   FUND:       Premium Government        American Century - Benham Premium
               Reserve Fund              Government Reserve

   FUND:       Premium Capital           American Century - Benham Premium
               Reserve Fund              Capital Reserve


                                                 www.americancentury.com      19


Premium Gov't. Reserve--Financial Highlights
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED MARCH 31

                                              1999            1998            1997            1996            1995
PER-SHARE DATA
<S>                                      <C>             <C>             <C>             <C>             <C>
Net Asset Value, Beginning of Year ...   $      1.00     $      1.00     $      1.00     $      1.00     $      1.00
                                         -----------     -----------     -----------     -----------     -----------
Income From Investment Operations

  Net Investment Income ..............          0.05            0.05            0.05            0.05            0.05
                                         -----------     -----------     -----------     -----------     -----------
Distributions
  From Net Investment Income .........         (0.05)          (0.05)          (0.05)          (0.05)          (0.05)
                                         -----------     -----------     -----------     -----------     -----------
Net Asset Value, End of Year .........   $      1.00     $      1.00     $      1.00     $      1.00     $      1.00
                                         ===========     ===========     ===========     ===========     ===========
  Total Return(1) ....................          4.98%           5.25%           5.07%           5.49%           4.62%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ................          0.45%           0.45%           0.45%           0.44%           0.45%
Ratio of Net Investment Income
to Average Net Assets ................          4.82%           5.13%           4.96%           5.30%           4.84%
Net Assets, End of Year
(in thousands) .......................   $   121,294     $    44,495     $    38,838     $    26,191     $    16,381
</TABLE>

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

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


<TABLE>
<CAPTION>
Premium Capital Reserve--Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED MARCH 31

                                              1999            1998            1997            1996            1995
PER-SHARE DATA
<S>                                      <C>             <C>             <C>             <C>             <C>
Net Asset Value, Beginning of Year ...   $      1.00     $      1.00     $      1.00     $      1.00     $      1.00
                                         -----------     -----------     -----------     -----------     -----------
Income From Investment Operations
  Net Investment Income ..............          0.05            0.05            0.05            0.05            0.05
                                         -----------     -----------     -----------     -----------     -----------
Distributions
  From Net Investment Income .........         (0.05)          (0.05)          (0.05)          (0.05)          (0.05)
                                         -----------     -----------     -----------     -----------     -----------
Net Asset Value, End of Year .........   $      1.00     $      1.00     $      1.00     $      1.00     $      1.00
                                         ===========     ===========     ===========     ===========     ===========
  Total Return(1) ....................          5.14%           5.38%           5.13%           5.58%           4.66%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
to Average Net Assets ................          0.45%           0.45%           0.45%           0.45%           0.45%
Ratio of Net Investment Income
to Average Net Assets ................          4.99%           5.26%           5.01%           5.50%           4.76%
Net Assets, End of Year
(in thousands) .......................   $   276,048     $   182,487     $   153,958     $   133,417     $   138,428
</TABLE>

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

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


Independent Auditors' Report
- --------------------------------------------------------------------------------

The Board of Directors and Shareholders,
American Century Premium Reserves, Inc.:

   We have  audited  the  accompanying  statements  of assets  and  liabilities,
including the schedules of investments,  of Premium  Government Reserve Fund and
Premium  Capital  Reserve  Fund  (formerly  American  Century  - Benham  Premium
Government  Reserve  and  American  Century - Benham  Premium  Capital  Reserve,
respectively)  (the  "Funds"),  two of the  funds  comprising  American  Century
Premium  Reserves,  Inc.,  as of March 31, 1999,  and the related  statements of
operations for the year then ended,  the statements of changes in net assets for
each of the two years in the period then ended, and the financial highlights for
each of the five years in the period then ended. These financial  statements and
the financial  highlights are the responsibility of the Funds'  management.  Our
responsibility  is to express an opinion on these  financial  statements and the
financial highlights based on our audits.

   We  conducted  our audits in  accordance  with  generally  accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable  assurance  about whether the financial  statements and the financial
highlights are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements.  Our procedures  included  confirmation of securities owned at March
31, 1999,  by  correspondence  with the  custodian  and  brokers.  An audit also
includes assessing the accounting principles used and significant estimates made
by  management,   as  well  as  evaluating  the  overall   financial   statement
presentation.  We believe  that our audits  provide a  reasonable  basis for our
opinion.

   In our opinion,  such financial  statements and financial  highlights present
fairly, in all material  respects,  the financial position of Premium Government
Reserve Fund and Premium  Capital  Reserve as of March 31, 1999,  the results of
their  operations  for the year then ended,  the changes in their net assets for
each of the two years in the period then ended, and the financial highlights for
each of the five years in the period  then ended in  conformity  with  generally
accepted accounting principles.

Deloitte & Touche LLP
Kansas City, Missouri
May 7, 1999


22      1-800-345-2021


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 from the date of
receipt  at  American  Century.  Even if you plan to  rollover  the  amount  you
withdraw to another tax-deferred  account, the withholding rate still applies to
the withdrawn  amount  unless we have received a written  notice not to withhold
federal income tax prior to the withdrawal.

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

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


                                                 www.americancentury.com      23


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

INVESTMENT PHILOSOPHY AND POLICIES

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

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

     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 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.

     But  unlike  most of the  funds in their  Lipper  categories,  the  Premium
Reserve Money Market funds are not really institutional funds. Instead, they are
intended for high-net-worth individual investors.  Institutional funds typically
have higher minimum  balance  requirements  (often $1 million or more) and, more
importantly,  lower  expenses.  The Premium  Reserve  Money Market funds' higher
expenses give them a disadvantage compared with their Lipper group.

     However,  the Premium  Reserve Money Market funds have lower  expenses than
the average  non-institutional  money market fund (according to Lipper), so they
can  offer  attractive  yields  to  individuals  able  to  meet  their  $100,000
investment minimum.

[left margin]

INVESTMENT TEAM LEADERS
  PORTFOLIO MANAGERS
     AMY O'DONNELL
     DENISE TABACCO
     JOHN WALSH

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.


24      1-800-345-2021


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

RETURNS

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

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

* BANK NOTES --  promissory  notes  issued in the U.S.  by  domestic  commercial
banks.

*  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).  The fund does not own the  security;  instead,  the  security  serves as
collateral for the agreement.

* 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.


                                                 www.americancentury.com      25


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

* 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.

FUND CLASSIFICATIONS

INVESTMENT OBJECTIVE

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

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

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

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

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

RISK

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

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

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

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


26      1-800-345-2021


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


                                                 www.americancentury.com      27


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


28      1-800-345-2021


[inside back cover]

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

                  RISK LEVEL - CONSERVATIVE

TAXABLE MONEY MARKETS           TAX-FREE MONEY MARKETS

Premium  Capital Reserve        FL Municipal Money Market
Prime Money Market              CA Municipal Money Market
Premium Government Reserve      CA Tax-Free Money Market
Government Agency               Tax-Free Money Market
   Money Market
Capital Preservation

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

                   RISK LEVEL - AGGRESSIVE

TAXABLE BONDS                   TAX-FREE BONDS

Target 2025*                    CA High-Yield Municipal
Target 2020*                    High-Yield Municipal
Target 2015*
Target 2010*
High-Yield
International Bond

                    RISK LEVEL - MODERATE

TAXABLE BONDS                   TAX-FREE BONDS

Long-Term Treasury              CA Long-Term Tax-Free
Target 2005*                    Long-Term Tax-Free
Bond                            CA Insured Tax-Free
Premium Bond

                   RISK LEVEL - CONSERVATIVE

TAXABLE BONDS                   TAX-FREE BONDS

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

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

                     RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY

Small Cap Quantitative
Small Cap Value

                      RISK LEVEL - MODERATE

ASSET ALLOCATION/BALANCED       DOMESTIC EQUITY        SPECIALTY

Strategic Allocation --         Equity Growth          Utilities
   Aggressive                   Equity Index           Real Estate
Balanced                        Tax-Managed Value
Strategic Allocation --         Income & Growth
   Moderate                     Value
Strategic Allocation --         Equity Income
   Conservative

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

                      RISK LEVEL - AGGRESSIVE

DOMESTIC EQUITY                 SPECIALTY              INTERNATIONAL

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

                       RISK LEVEL - MODERATE

SPECIALTY

Global Natural Resources


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

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

For a definition of fund categories, see the Glossary.

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

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


[back cover]

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

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

WWW.AMERICANCENTURY.COM

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

AUTOMATED INFORMATION LINE
1-800-345-8765

FAX: 816-340-7962

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

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

AMERICAN CENTURY 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.



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

9905                                                    Funds Distributor, Inc.
SH-BKT-16274                      (c)1999 American Century Services Corporation


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