UPDATE 4-Global advertising giant WPP faces stagnant sales this year By: Reuters: Company News October 31, 2017 at 08:51 AM EDT * Shares up 2.5 pct to 1327 pence at 1235 GMT (Adds reaction) Read More >> Related Stocks: Interpublic GroupCompanies Omnicom Group Omnicomm Systems Inc Peoples Utah Procter & Gamble