153053
SUPPLEMENT TO THE PROSPECTUS
DATED JUNE 30, 2000
MASON STREET FUNDS, INC.
Steven P. Swanson, Managing Director of Northwestern
Investment Management Company, joined Northwestern Mutual in
1981. He received a B.A. degree from Lawrence University and
an M.B.A. from the University of Michigan. Mr. Swanson is
the head of the high yield division of Northwestern
Investment Management Company and manages the high yield
fixed income securities of Northwestern Mutual.
Mr. Swanson is a co-manager of the High Yield Bond Fund and
is also a co-manager of the High Yield Bond Portfolio of the
Series Fund.
Timothy S. Collins, Managing Director of Northwestern
Investment Management Company, joined Northwestern Mutual in
1986. Mr. Collins is a Chartered Financial Analyst and
holds a B.A. degree from St. Norbert College and an M.B.A.
from the University of Wisconsin - Madison. Mr. Collins is
the director of research of the high yield division of
Northwestern Mutual Investment Management Company. Mr.
Collins is a co-manager of the High Yield Bond Fund and is
also a co-manager of the High Yield Bond Portfolio of the
Series Fund.
The date of this Prospectus Supplement is January 2, 2001.
