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<PAGE> PAGE 2
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<PAGE> PAGE 3
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<PAGE> PAGE 4
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<PAGE> PAGE 5
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<PAGE> PAGE 7
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<PAGE> PAGE 10
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<PAGE> PAGE 11
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<PAGE> PAGE 12
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<PAGE> PAGE 13
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<PAGE> PAGE 14
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<PAGE> PAGE 15
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<PAGE> PAGE 16
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SIGNATURE MARYANNE ROEPKE
TITLE TREASURER
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<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
FROM THE SEMI-ANNUAL REPORT OF AMERICAN CENTURY MUTUAL FUNDS, INC.
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH REPORT.
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<CIK> 0000896308
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<NAME> PREMIUM CAPITAL RESERVE FUND
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THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
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<EXPENSES-NET> 212,739
<NET-INVESTMENT-INCOME> 2,146,011
<REALIZED-GAINS-CURRENT> (2,689)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 2,143,322
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 2,146,011
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 164,664,831
<NUMBER-OF-SHARES-REDEEMED> 201,413,865
<SHARES-REINVESTED> 2,094,092
<NET-CHANGE-IN-ASSETS> (34,657,631)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 212,297
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 212,739
<AVERAGE-NET-ASSETS> 94,096,306
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> 0.02
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.45
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
FROM THE SEMI-ANNUAL REPORT OF AMERICAN CENTURY MUTUAL FUNDS, INC.
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH REPORT.
</LEGEND>
<CIK> 0000896308
<NAME> AMERICAN CENTURY PREMIUM RESERVES, INC.
<SERIES>
<NUMBER> 3
<NAME> PREMIUM BOND FUND
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAR-31-1999
<PERIOD-END> SEP-30-1999
<INVESTMENTS-AT-COST> 104,965,387
<INVESTMENTS-AT-VALUE> 102,349,581
<RECEIVABLES> 1,328,935
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 103,678,516
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2,116,475
<TOTAL-LIABILITIES> 2,116,475
<SENIOR-EQUITY> 104,231
<PAID-IN-CAPITAL-COMMON> 104,325,544
<SHARES-COMMON-STOCK> 10,423,129
<SHARES-COMMON-PRIOR> 10,428,722
<ACCUMULATED-NII-CURRENT> (251,928)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (2,615,806)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 101,562,041
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 3,318,490
<OTHER-INCOME> 0
<EXPENSES-NET> 233,224
<NET-INVESTMENT-INCOME> 3,085,266
<REALIZED-GAINS-CURRENT> (263,879)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> (3,371,267)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 3,085,266
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,195,915
<NUMBER-OF-SHARES-REDEEMED> 2,490,751
<SHARES-REINVESTED> 289,242
<NET-CHANGE-IN-ASSETS> (3,721,881)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 11,951
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 232,740
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 233,224
<AVERAGE-NET-ASSETS> 103,107,709
<PER-SHARE-NAV-BEGIN> 10.10
<PER-SHARE-NII> 0.29
<PER-SHARE-GAIN-APPREC> (0.36)
<PER-SHARE-DIVIDEND> 0.29
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 9.74
<EXPENSE-RATIO> 0.45
</TABLE>
N-SAR
Item 77N
The fund owned funding agreements issued by General American Life Insurance
Company ("Funding Agreements"), each of which included a demand feature (as that
term in defined in rule 2-7a) permitting the Fund to put the Funding Agreement
back to General American for payment in full upon 7 days' prior notice. On
August 4, 1999, the Fund exercised the Demand Features and notified General
American of termination of the Funding Agreements. General American failed to
make payment when due on August 11, 1999. American Century Companies, Inc., an
affiliated person of an affiliated person of the fund (the "Affiliate"), entered
into a put agreement ("Put") on August 23, 1999 in order to avoid potential
losses to shareholders of the fund. The Put granted to the fund the right, on or
before September 20, 1999, to sell the Funding Agreements to the Affiliate at a
price equal to the amortized cost (plus accrued interest) of the Funding
Agreement. The fund undertook to exercise the Put prior to September 20, 1999
upon such date that the Affiliate's long-term or short-term rating is not
comparable to a rating of A-1 by Standard & Poors and Prime-1 (P-1) by Moody's
Investors Service, unless at such time the Put has been replaced by a credit
enhancement from a party that is not affiliated with the fund and that has the
highest ratings on its short-term debt obligations from the requisite NRSORs as
that term is defined in rule 2a-7. Metropolitan Life Insurance Company
("MetLife") announced on August 26, 1999 that it had agreed to acquire
GenAmerica Corp., General American's parent company. On August 30, 1999, MetLife
offered to acquire the Funding Agreements from the fund in exchange for
substantially similar agreements to be issued by MetLife on September 29, 1999
("MetLife Agreements"). MetLife gave the fund the option of (i) requesting cash
equal to the principal amount of its Funding Agreements plus accrued interest
through September 30, 1999, payment to be made on October 1, 1999; or (ii)
retaining the MetLife Agreements until they terminate in accordance with their
terms. The fund's trustees determined that it was in the best interest of the
fund and its shareholders (i) to accept the MetLife Agreement in exchange for
the Funding Agreements, (ii) to request cash payment of the principal and
interest payable on October 1, 1999, and (iii) to modify the terms of the Put by
(i) extending its terms from September 20, 1999 to October 4, 1999 and (ii)
providing for termination of the Put at such time as the fund received the cash
payment of principal and interest from MetLife. The fund received such payment
from MetLife on October 1, 1999.
