The Free On-line Dictionary of Computing (30 December 2018):

Santa Cruz Operation
SCO

   (SCO) A supplier of Unix systems for Intel
   microprocessors.  They supply Xenix and Open Desktop.

   Founded in 1979, SCO became a public company in May, 1993 and
   trades on the Nasdaq National Market System under the symbol
   SCOC.  SCO maintains its world headquarters in Santa Cruz,
   California, USA; a European headquarters in Watford, England;
   a Government Systems Group in Reston, Virginia; and offices in
   Asia, Australia, Canada, Latin America, and throughout Europe
   and the United States.  In February 1993, SCO acquired IXI
   Limited of Cambridge, England, the leading supplier of Unix
   System windowing software.

   (http://websco.sco.com/).

   (1994-10-28)

   [Addresses?]