<PAGE>
Rule 424(b)(3)
Registration No. 33-64857
SUNGARD/(R)/ DATA SYSTEMS INC.
SUPPLEMENT DATED FEBRUARY 12, 1996
TO
PROSPECTUS DATED DECEMBER 18, 1995
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 item regarding James F.
Minihan is amended and restated as follows:
<TABLE>
<CAPTION>
# OF SHARES # OF SHARES # OF SHARES % OF SHARES
OWNED BEING OWNED OWNED
BEFORE THE OFFERED AFTER THE AFTER THE
NAME OF SELLING STOCKHOLDER OFFERING FOR SALE OFFERING OFFERING
- --------------------------- -------- -------- -------- --------
<S> <C> <C> <C> <C>
James F. Minihan 5,589 5,030 559 *
Eileen Minihan 3,257 2,931 326 *
</TABLE>