-----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, MKY5gAgyGCrljIyuHB+mCUHOhGwSnpfYOp5y9LqU0lz1Cypb7ntWzaUWLqL/3AKB rvhkGRHbHf1iwkx3zPEnCA== 0000100334-06-000119.txt : 20061117 0000100334-06-000119.hdr.sgml : 20061117 20061117101842 ACCESSION NUMBER: 0000100334-06-000119 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20061117 DATE AS OF CHANGE: 20061117 EFFECTIVENESS DATE: 20061117 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: 061225165 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 C000017046 ADVISOR CLASS TWBAX C000017047 INSTITUTIONAL CLASS ABINX 0000100334 S000006193 NEW OPPORTUNITIES II C000017048 INSTITUTIONAL CLASS C000017049 INVESTOR CLASS ANOIX C000017050 A CLASS ANOAX C000017051 B CLASS ANOBX C000017052 C CLASS ANOCX 0000100334 S000006194 SELECT FUND C000017053 INVESTOR CLASS TWCIX C000017054 ADVISOR CLASS TWCAX C000017055 INSTITUTIONAL CLASS TWSIX C000017056 A CLASS AASLX C000017057 B CLASS ABSLX C000017058 C CLASS ACSLX C000017059 R CLASS ASERX 0000100334 S000006195 ULTRA FUND C000017060 INVESTOR CLASS TWCUX C000017061 ADVISOR CLASS TWUAX C000017062 INSTITUTIONAL CLASS TWUIX C000017063 C CLASS TWCCX C000017064 R CLASS AULRX 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 C000017070 C CLASS TWVCX 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 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 C000017104 C CLASS TWGCX C000017105 R CLASS AGWRX 0000100334 S000006206 HERITAGE FUND C000017106 INVESTOR CLASS TWHIX C000017107 ADVISOR CLASS ATHAX C000017108 INSTITUTIONAL CLASS ATHIX C000017109 C CLASS AHGCX 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 PROSPECTUS AND SAI SUPPLEMENT PROSPECTUS AND SAI SUPPLEMENT 
American Century Mutual Funds, Inc.

PROSPECTUS SUPPLEMENT

ULTRA FUND

Supplement dated November 17, 2006 * Prospectus dated March 1, 2006

THE FOLLOWING REPLACES THE INFORMATION UNDER THE HEADING THE FUND MANAGEMENT
TEAM ON PAGE 11.

THE FUND MANAGEMENT TEAM

The advisor uses teams of portfolio managers and analysts to manage funds. The
teams meet regularly to review portfolio holdings and discuss purchase and sale
activity. Team members buy and sell securities for a fund as they see fit,
guided by the fund's investment objective and strategy.

The portfolio managers on the investment team who are jointly and primarily
responsible for the day-to-day management of the fund are identified below.

WADE W. SLOME

Mr. Slome, Vice President and Portfolio Manager, has been a member of the team
that manages Ultra since joining American Century in June 1998. He was promoted
to Portfolio Manager in July 2002. He holds a bachelor's degree in economics
from the University of California - Los Angeles, and an MBA in finance from
Cornell University. He is a CFA charterholder.

TOM TELFORD

Mr. Telford, Vice President and Portfolio Manager, joined the team that manages
Ultra in June 2006. He joined American Century in July 1996 and became a
portfolio manager in 2000. He has a bachelor of business administration from
Southern Methodist University and an MBA from Wharton School of Business,
University of Pennsylvania. He is a CFA charterholder.

The statement of additional information provides additional information about
the other accounts managed by the portfolio managers, if any, the structure of
their compensation, and their ownership of fund securities.

American Century Investment Services, Inc., Distributor

©2006 American Century Proprietary Holdings, Inc. All rights reserved.

The American Century Investments logo, American Century and American Century
Investments are service marks of American Century Proprietary Holdings, Inc.

SH-SPL-52480 0611










American Century Mutual Funds, Inc.

STATEMENT OF ADDITIONAL INFORMATION SUPPLEMENT

Supplement dated November 17, 2006 * Statement of Additional  Information  dated
October 13, 2006

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

THE FOLLOWING REPLACES THE OTHER ACCOUNTS MANAGED INFORMATION ON PAGE 59.

OTHER ACCOUNTS MANAGED (AS OF OCTOBER 31, 2005)
                                   REGISTERED                           OTHER ACCOUNTS
                                   INVESTMENT                           (E.G., SEPARATE
                                   COMPANIES                            ACCOUNTS AND
                                   (E.G., OTHER      OTHER POOLED       CORPORATE
                                   AMERICAN          INVESTMENT         ACCOUNTS
                                   CENTURY FUNDS     VEHICLES (E.G.,    INCLUDING
                                   AND AMERICAN      COMMINGLED         INCUBATION
                                   CENTURY -         TRUSTS AND 529     STRATEGIES AND
                                   SUBADVISED        EDUCATION          CORPORATE
                                   FUNDS)            SAVINGS PLANS)     MONEY)
- ---------------------------------------------------------------------------------------
NT Growth(1)
- ---------------------------------------------------------------------------------------
Gregory J.      Number of Other    8                 0                  3
Woodhams        Accounts Managed
                -----------------------------------------------------------------------
                Assets in Other    $9,794,623,329    N/A                $134,259,345
                Accounts Managed
- ---------------------------------------------------------------------------------------
E.A.            Number of Other    4                 0                  3
Prescott        Accounts Managed
LeGard
                -----------------------------------------------------------------------
                Assets in Other    $5,821,020,595    N/A                $134,259,345
                Accounts Managed
- ---------------------------------------------------------------------------------------
NT Vista(1)
- ---------------------------------------------------------------------------------------
Glenn           Number of Other    8                 0                  1
Fogle           Accounts Managed
                -----------------------------------------------------------------------
                Assets in Other    $7,052,458,009    N/A                $30,699,952
                Accounts Managed
- ---------------------------------------------------------------------------------------
David           Number of Other    8                 0                  1
Hollond         Accounts Managed
                -----------------------------------------------------------------------
                Assets in Other    $7,052,458,009    N/A                $30,699,952
                Accounts Managed
- ---------------------------------------------------------------------------------------
Select
- ---------------------------------------------------------------------------------------
Harold          Number of Other    3                 0                  14
Bradley(2)      Accounts Managed
                -----------------------------------------------------------------------
                Assets in Other    $787,068,444      N/A                $26,399,165
                Accounts Managed
- ---------------------------------------------------------------------------------------
Keith Lee       Number of Other    1                 0                  0
                Accounts Managed
                -----------------------------------------------------------------------
                Assets in Other    $435,618,606      N/A                N/A
                Accounts Managed
- ---------------------------------------------------------------------------------------
Michael Li(3)   Number of Other    1                 0                  0
                Accounts Managed
                -----------------------------------------------------------------------
                Assets in Other    $433,736,823      N/A                N/A
                Accounts Managed
- ---------------------------------------------------------------------------------------
Ultra
- ---------------------------------------------------------------------------------------
Wade            Number of Other    1                 0                  0
Slome           Accounts Managed
                -----------------------------------------------------------------------
                Assets in Other    $259,364,324      N/A                N/A
                Accounts Managed
- ---------------------------------------------------------------------------------------
Thomas          Number of Other    2                 0                  0
Telford(4)      Accounts Managed
                -----------------------------------------------------------------------
                Assets in Other    $1,587,618,801    N/A                N/A
                Accounts Managed
- ---------------------------------------------------------------------------------------

(1)  THE FUND'S INCEPTION DATE WILL BE MAY 12, 2006. THE FUND'S INFORMATION
     IS PROVIDED AS OF MARCH 31, 2006, AND ASSUMES THE FUND WAS IN OPERATION ON
     THAT DATE.

(2)  MR. BRADLEY BECAME A PORTFOLIO MANAGER FOR SELECT ON APRIL 1, 2006.
     INFORMATION IS PROVIDED AS OF APRIL 10, 2006.

(3)  DR. LI BECAME A PORTFOLIO MANAGER FOR SELECT ON FEBRUARY 1, 2006.
     INFORMATION IS PROVIDED AS OF FEBRUARY 10, 2006.

(4)  MR. TELFORD BECAME A PORTFOLIO MANAGER FOR ULTRA ON JUNE 30, 2006.
     INFORMATION IS PROVIDED AS OF JULY 12, 2006.


THE FOLLOWING REPLACES THE OWNERSHIP OF SECURITIES INFORMATION ON PAGE 63.

OWNERSHIP OF SECURITIES
                                    AGGREGATE DOLLAR RANGE OF SECURITIES IN FUND
- --------------------------------------------------------------------------------
Giftrust
  David M. Rose(1)                    A
- --------------------------------------------------------------------------------
  Kurt R. Stalzer(1)                  A
- --------------------------------------------------------------------------------
Growth
  Gregory J. Woodhams                 E
- --------------------------------------------------------------------------------
  E.A. Prescott LeGard                F
- --------------------------------------------------------------------------------
Heritage
  David M. Rose                       E
- --------------------------------------------------------------------------------
  Kurt R. Stalzer                     D
- --------------------------------------------------------------------------------
New Opportunities
  Harold Bradley                      F
- --------------------------------------------------------------------------------
  Matthew Ferretti(2)                 C
- --------------------------------------------------------------------------------
  Stafford Southwick(3)               C
- --------------------------------------------------------------------------------
New Opportunities II
  Harold Bradley                      E
- --------------------------------------------------------------------------------
  Matthew Ferretti(1)(2)              A
- --------------------------------------------------------------------------------
  Stafford Southwick(3)               C
- --------------------------------------------------------------------------------
Select
  Harold Bradley(4)                   C
- --------------------------------------------------------------------------------
  Keith Lee                           E
- --------------------------------------------------------------------------------
  Michael Li(5)                       B
- --------------------------------------------------------------------------------
Ultra
  Wade Slome                          E
- --------------------------------------------------------------------------------
  Thomas Telford(6)                   E
- --------------------------------------------------------------------------------
Veedot
  John Small Jr.                      E
- --------------------------------------------------------------------------------
Vista
  Glenn Fogle                         E
- --------------------------------------------------------------------------------
  David Hollond                       E
- --------------------------------------------------------------------------------

RANGES: A - NONE; B - $1-$10,000; C - $10,001-$50,000; D - $50,001-$100,000; E -
$100,001-$500,000; F - $500,001-$1,000,000; G - MORE THAN $1,000,000.

(1)  AMERICAN CENTURY HAS ADOPTED A POLICY THAT, WITH LIMITED EXCEPTIONS,
     REQUIRES ITS PORTFOLIO MANAGERS TO MAINTAIN INVESTMENTS IN THE POLICY
     PORTFOLIOS THEY OVERSEE. HOWEVER, BECAUSE THIS PORTFOLIO MANAGER SERVES ON
     A TEAM THAT OVERSEES A NUMBER OF FUNDS IN THE SAME BROAD INVESTMENT
     STRATEGY, THE PORTFOLIO MANAGER IS NOT REQUIRED TO INVEST IN EACH SUCH
     FUND.

(2)  MR. FERRETTI BECAME A PORTFOLIO MANAGER FOR NEW OPPORTUNITIES AND NEW
     OPPORTUNITIES II ON JUNE 30, 2006. INFORMATION IS PROVIDED AS OF JULY 12,
     2006.

(3)  MR. SOUTHWICK BECAME A PORTFOLIO MANAGER FOR NEW OPPORTUNITIES AND NEW
     OPPORTUNITIES II ON APRIL 1, 2006. INFORMATION IS PROVIDED AS OF APRIL 1,
     2006.

(4)  MR. BRADLEY BECAME A PORTFOLIO MANAGER FOR SELECT ON APRIL 1, 2006.
     INFORMATION IS PROVIDED AS OF APRIL 10, 2006.

(5)  DR. LI BECAME A PORTFOLIO MANAGER FOR SELECT ON FEBRUARY 1, 2006.
     INFORMATION IS PROVIDED AS OF FEBRUARY 10, 2006.

(6)  MR. TELFORD BECAME A PORTFOLIO MANAGER FOR ULTRA ON JUNE 30, 2006.
     INFORMATION IS PROVIDED AS OF JULY 12, 2006.

American Century Investment Services, Inc., Distributor

©2006 American Century Proprietary Holdings, Inc. All rights reserved.

The American Century Investments logo, American Century and American Century
Investments are service marks of American Century Proprietary Holdings, Inc.

SH-SPL-52490 0611
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