 Stock Market SymbolsGIB.A TSX GIB NYSE cgi.comnewsroom MONTRÉAL, July 28, 2021 PRNewswire - CGI TSX: GIB.A NYSE: GIB has renewed its long-term payroll services alliance with Quebec-based Desjardins, the leading financial cooperative in North America. The 10-year agreement is valued at over CA500 million. 