Control Data Corp could soon find itself under siege – but then again it may not. Corporate raiders the Belzberg family of Canada are believed to have built up a 4% to 5% stake in the Minneapolis mainframer and reportedly have talked to Wall Street investment banks about the possibility of a break-up of the company. But the Belzbergs have also more than once accumulated stakes in companies and then sold them back to the target or disposed of them without any bid being made.
