<PAGE>
Rule 424(b)(3)
Registration No. 333-75737
SUNGARD(R) DATA SYSTEMS INC.
SUPPLEMENT DATED JUNE 28, 1999
TO
PROSPECTUS DATED APRIL 16, 999
This supplement provides new and additional information beyond that contained in
the Prospectus and should be retained and read in conjunction with such
Prospectus.
Under the caption "SELLING STOCKHOLDERS," the line items regarding Gary Williams
and James Jenkins are amended and restated as follows:
<TABLE>
<CAPTION>
# of Shares # of Shares
Owned Being # of Shares % of Shares
Before the Offered For Owned After Owned After
Name of Selling Stockholder Offering Sale the Offering the Offering
- ----------------------------------- ----------- ----------- ------------ ------------
<S> <C> <C> <C> <C>
Gary Williams........................ 241,486 213,337 28,149 *
James Jenkins........................ 224,286 196,137 28,149 *
The Church of Jesus Christ of Latter 97,200 97,200 0 *
Day Saints..........................
</TABLE>
