US STOCKS-Wall Street starts key week with a dip By: Reuters: Company News July 29, 2013 at 10:21 AM EDT * Drug firm Perrigo to buy Elan; Publicis, Omnicom in merger Read More >> Related Stocks: Adf Group Inc CNA Financial Corp HSBC Holdings Plc ADR Interpublic GroupCompanies Loews Corp Omnicom Group