-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, PVQCe3/bccdLnyfs/uL6lHkHfrHdmbBWuVTkbBLtvH7Ls382Q84AAqHrvWjdWg5T rtjuHhyJXjxXqQncC0NXmA== 0000100334-08-000024.txt : 20080430 0000100334-08-000024.hdr.sgml : 20080430 20080430112044 ACCESSION NUMBER: 0000100334-08-000024 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20080430 DATE AS OF CHANGE: 20080430 EFFECTIVENESS DATE: 20080430 FILER: COMPANY DATA: COMPANY CONFORMED NAME: AMERICAN CENTURY MUTUAL FUNDS, INC. CENTRAL INDEX KEY: 0000100334 IRS NUMBER: 446006315 STATE OF INCORPORATION: MO FISCAL YEAR END: 1031 FILING VALUES: FORM TYPE: 497 SEC ACT: 1933 Act SEC FILE NUMBER: 002-14213 FILM NUMBER: 08788482 BUSINESS ADDRESS: STREET 1: 4500 MAIN STREET CITY: KANSAS CITY STATE: MO ZIP: 64111 BUSINESS PHONE: 816-531-5575 MAIL ADDRESS: STREET 1: 4500 MAIN STREET CITY: KANSAS CITY STATE: MO ZIP: 64111 FORMER COMPANY: FORMER CONFORMED NAME: AMERICAN CENTURY MUTUAL FUNDS INC DATE OF NAME CHANGE: 19970107 FORMER COMPANY: FORMER CONFORMED NAME: TWENTIETH CENTURY INVESTORS INC DATE OF NAME CHANGE: 19920703 0000100334 S000006192 BALANCED FUND C000017045 INVESTOR CLASS TWBIX C000017047 INSTITUTIONAL CLASS ABINX 0000100334 S000006193 NEW OPPORTUNITIES II C000017048 INSTITUTIONAL CLASS ANONX C000017049 INVESTOR CLASS ANOIX C000017050 A CLASS ANOAX C000017051 B CLASS ANOBX C000017052 C CLASS ANOCX C000055516 R CLASS ANORX 0000100334 S000006194 SELECT FUND C000017053 INVESTOR CLASS TWCIX C000017054 A CLASS TWCAX C000017055 INSTITUTIONAL CLASS TWSIX C000017057 B CLASS ABSLX C000017058 C CLASS ACSLX C000017059 R CLASS ASERX 0000100334 S000006195 ULTRA FUND C000017060 INVESTOR CLASS TWCUX C000017061 A CLASS TWUAX C000017062 INSTITUTIONAL CLASS TWUIX C000017063 C CLASS TWCCX C000017064 R CLASS AULRX C000055517 B CLASS AULBX 0000100334 S000006196 VEEDOT FUND C000017065 INVESTOR CLASS AMVIX C000017066 INSTITUTIONAL CLASS AVDIX 0000100334 S000006197 VISTA FUND C000017067 INVESTOR CLASS TWCVX C000017068 ADVISOR CLASS TWVAX C000017069 INSTITUTIONAL CLASS TWVIX C000017071 R CLASS AVTRX 0000100334 S000006198 MID CAP GROWTH FUND C000017072 INVESTOR CLASS ACOVX C000017073 INSTITUTIONAL CLASS ACMIX C000017074 A CLASS MAGAX C000017075 B CLASS MAGHX C000017076 C CLASS ACMLX C000017077 R CLASS ACMRX 0000100334 S000006199 SMALL CAP GROWTH FUND C000017078 INVESTOR CLASS ACWVX C000017079 INSTITUTIONAL CLASS ACWIX C000017080 A CLASS MSASX C000017081 B CLASS MSBSX C000017082 C CLASS ACWCX C000017083 R CLASS ACWRX 0000100334 S000006200 CAPITAL GROWTH FUND C000017084 INVESTOR CLASS ACLIX C000017085 INSTITUTIONAL CLASS APLIX C000017086 A CLASS ACCGX C000017087 B CLASS ACGBX C000017088 C CLASS ACPGX C000017089 R CLASS APWRX 0000100334 S000006201 CAPITAL VALUE FUND C000017090 INVESTOR CLASS ACTIX C000017091 ADVISOR CLASS ACCVX C000017092 INSTITUTIONAL CLASS ACPIX 0000100334 S000006202 FOCUSED GROWTH FUND C000017093 INVESTOR CLASS AFSIX C000055518 INSTITUTIONAL CLASS AFGNX C000055519 A CLASS AFGAX C000055520 B CLASS AFGBX C000055521 C CLASS AFGCX C000055522 R CLASS AFGRX 0000100334 S000006203 FUNDAMENTAL EQUITY FUND C000017094 INVESTOR CLASS AFDIX C000017095 INSTITUTIONAL CLASS AFEIX C000017096 A CLASS AFDAX C000017097 B CLASS AFDBX C000017098 C CLASS AFDCX C000017099 R CLASS AFDRX 0000100334 S000006204 GIFTRUST FUND C000017100 INVESTOR CLASS TWGTX 0000100334 S000006205 GROWTH FUND C000017101 INVESTOR CLASS TWCGX C000017102 ADVISOR CLASS TCRAX C000017103 INSTITUTIONAL CLASS TWGIX C000017105 R CLASS AGWRX 0000100334 S000006206 HERITAGE FUND C000017106 INVESTOR CLASS TWHIX C000017107 A CLASS ATHAX C000017108 INSTITUTIONAL CLASS ATHIX C000017109 C CLASS AHGCX C000055523 B CLASS ATHBX C000055524 R CLASS ATHWX 0000100334 S000006207 NEW OPPORTUNITIES FUND C000017110 INVESTOR CLASS TWNOX 0000100334 S000010981 NT GROWTH FUND C000030355 INSTITUTIONAL CLASS ACLTX 0000100334 S000010982 NT VISTA FUND C000030356 INSTITUTIONAL CLASS ACLWX 497 1 supp.htm STATEMENT OF ADDITIONAL INFORMATION SUPPLEMENT STATEMENT OF ADDITIONAL INFORMATION SUPPLEMENT 
American Century Mutual Funds, Inc.

STATEMENT OF ADDITIONAL INFORMATION SUPPLEMENT

[american century investments logo and text logo ®]

BALANCED FUND * CAPITAL GROWTH FUND * CAPITAL VALUE FUND * FOCUSED GROWTH FUND
FUNDAMENTAL EQUITY FUND * GIFTRUST® FUND * GROWTH FUND * HERITAGE FUND
AMERICAN CENTURY-MASON STREET MID CAP GROWTH FUND * NEW OPPORTUNITIES FUND
NEW OPPORTUNITIES II FUND * NT GROWTH FUND * NT VISTA(SM) FUND * SELECT FUND
AMERICAN CENTURY-MASON STREET SMALL CAP GROWTH FUND * ULTRA® FUND
VEEDOT® FUND * VISTA(SM) FUND

Supplement dated May 1, 2008 * Statement of Additional  Information  dated March
1, 2008

Timothy S. Webster resigned as director effective March 6, 2008. All references
to him in the SAI should be deleted, with the exception of the COMPENSATION OF
DIRECTORS section.

THE FOLLOWING FOOTNOTE SHOULD BE ADDED TO TIMOTHY S. WEBSTER'S ENTRY IN THE
AGGREGATE DIRECTOR COMPENSATION TABLE IN THE COMPENSATION OF DIRECTORS SECTION
OF THE SAI:

    MR. WEBSTER RESIGNED FROM THE BOARD ON MARCH 6, 2008.

THE ENTRIES FOR JAMES F. KEEGAN IN THE ACCOUNTS MANAGED SECTION ON PAGE 63 AND
THE OWNERSHIP OF SECURITIES SECTION ON PAGE 67 ARE DELETED.

AS OF MAY 9, 2008, THE ENTRIES FOR FEI ZOU IN THE ACCOUNTS MANAGED SECTION ON
PAGE 64 AND THE OWNERSHIP OF SECURITIES SECTION ON PAGE 67 ARE DELETED.

American Century Investment Services, Inc., Distributor

©2008 American Century Proprietary Holdings, Inc. All rights reserved.

CL-SPL-60463 0805
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