Filed by: American Century Capital Portfolios, Inc.
Pursuant to Rule 425 under the
Securities Act of 1933, as amended
Subject Company: Mason Street Funds, Inc.
Investment Company Act File No. 811-07961
AMERICAN CENTURY INVESTMENTS/MASON STREET FUNDS
STRATEGIC ALLIANCE
WE ARE PLEASED TO ANNOUNCE THE ACQUISITION OF MASON STREET FUNDS BY AMERICAN
CENTURY INVESTMENTS. THE ACQUISITION INVOLVES 10 OF THE EXISTING MASON STREET
FUNDS REORGANIZING INTO NEW OR EXISTING AMERICAN CENTURY FUNDS.
The reorganization is separated into four types of transactions: Merged Funds,
Adopted and Subadvised Funds, Adopted Funds and "Federated Transaction."
MERGED FUNDS:
Four of the Mason Street Funds will be reorganized into existing American
Century funds. These include:
Mason Street Index 500 Fund American Century Equity Index Fund
Mason Street Large Cap Core Fund American Century Equity Growth Fund
Mason Street Asset Allocation Fund American Century Strategic Allocation: Moderate Fund
Mason Street Growth Stock Fund American Century Select Fund
ADOPTED AND SUBADVISED FUNDS:
Four Mason Street Funds will be reorganized into newly created American Century
funds. American Century Investment Management, Inc. (ACIM) will act as an
investment advisor and Mason Street Advisors will act as investment subadvisor.
These funds include:
Mason Street Small Cap Growth Fund American Century - Mason Street Small Cap Growth Fund
Mason Street Aggressive Growth Fund American Century - Mason Street Mid Cap Growth Fund
Mason Street Select Bond Fund American Century - Mason Street Select Bond Fund
Mason Street High Yield Bond Fund American Century - Mason Street High-Yield Bond Fund
ADOPTED FUNDS:
Two Mason Street Funds will be reorganized into newly created American Century
funds. ACIM or one of its affiliates will act as the investment advisor after
the reorganization. These funds include:
Mason Street International Equity Fund American Century International Value Fund
Mason Street Municipal Bond Fund American Century Long-Term Tax-Free Fund
FEDERATED TRANSACTION:
One of the Mason Street Funds will be reorganized into an existing investment
portfolio of the Federated Funds.
Mason Street Index 400 Fund Federated Mid-Cap Index Fund Federated Mid-Cap Index Fund
REGISTRATION STATEMENTS RELATING TO THE NEWLY CREATED AMERICAN CENTURY FUNDS
HAVE BEEN FILED WITH THE SECURITIES AND EXCHANGE COMMISSION (THE SEC) BUT HAVE
NOT YET BECOME EFFECTIVE. THE FUNDS MAY NOT BE SOLD, NOR MAY OFFERS TO BUY BE
ACCEPTED, PRIOR TO THE TIME THE REGISTRATION STATEMENTS BECOME EFFECTIVE. THIS
COMMUNICATION SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION OF AN
OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THE FUNDS IN ANY STATE IN WHICH SUCH
OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR TO REGISTRATION OR
QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
THE INFORMATION INCLUDED HEREIN IS ALSO NOT A SOLICITATION OF ANY PROXY. THE
ISSUERS OF THE AMERICAN CENTURY FUNDS LISTED ABOVE (AMERICAN CENTURY MUTUAL
FUNDS, INC., AMERICAN CENTURY INVESTMENT TRUST, AMERICAN CENTURY CAPITAL
PORTFOLIOS, INC., AMERICAN CENTURY QUANTITATIVE EQUITY FUNDS, INC., AMERICAN
CENTURY WORLD MUTUAL FUNDS, INC., AMERICAN CENTURY STRATEGIC ASSET ALLOCATIONS,
INC., AND AMERICAN CENTURY MUNICIPAL TRUST) HAVE FILED A PROXY
STATEMENT/PROSPECTUS AND OTHER RELEVANT DOCUMENTS REGARDING THE REORGANIZATION
WITH THE SEC. INVESTORS ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS AND
OTHER DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE PLANNED EORGANIZATION,
OR INCORPORATED BY REFERENCE INTO THE PROXY STATEMENT/PROSPECTUS, BECAUSE THEY
CONTAIN IMPORTANT INFORMATION ABOUT THE REORGANIZATION AND RELATED MATTERS. YOU
CAN OBTAIN THE PROXY STATEMENT/PROSPECTUS AND OTHER RELATED DOCUMENTS FREE OF
CHARGE AT THE SEC WEB SITE (WWW.SEC.GOV).
FOR INSTITUTIONAL USE ONLY/NOT FOR PUBLIC USE
AMERICAN CENTURY INVESTMENT SERVICES, INC. DISTRIBUTOR
TP-FLY-47243 0512