SunAmerica Series Trust
Supplement to Prospectus dated April 1, 1998
The first paragraph under the heading "Cash Management Portfolio"
on page 9 of the Prospectus is deleted and replaced with the
following:
The Cash Management Portfolio seeks high current yield while
preserving capital by investing in a diversified selection of
money market instruments including corporate bonds and notes;
commercial bank obligations; securities of the U.S. government,
its agencies and instrumentalities; commercial paper and savings
association obligations. These securities mature in 397 days or
less. The Cash Management Portfolio also may enter into
repurchase agreements and firm commitment arrangements and
purchase when-issued securities. See "Description of Securities
and Investment Techniques."
July 13, 1998
