<PAGE>
Rule 424(b)(3)
Registration No. 33-65831
SUNGARD(R) DATA SYSTEMS INC.
SUPPLEMENT DATED DECEMBER 22, 1998
TO
PROSPECTUS DATED NOVEMBER 24, 1998
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 Abraham
George and Bijoy George are amended and restated as follows:
<TABLE>
<CAPTION>
# of Shares # of Shares # of Shares % of Shares
Owned Being Owned After Owned After
Before the Offered For the Offering the Offering
Name of Selling Stockholder Offering Sale
- -----------------------------------------------------------------------------------------------------
<S> <C> <C> <C> <C>
Abraham George....................... 182,542 182,542 0 *
Jeffrey Sanders...................... 1,402 1,402 0 *
Bijoy George......................... 173,942 173,944 0 *
Fidelity Investment Charitable Gift
Fund................................ 20,000 20,000 0 *
</TABLE>
