1 week ago Dr Mumbo: Omnicom’s shares drop as Omicron variant pops up The shares of Omnicom Group on the New York Stock Exchange have done a curious thing over the weekend, with a sharp decline on Friday from US$68.94 to a low of US$66.26. Dr Mumbo cannot help but note that the drop in Omnicom's shares seems to coincide with the news hitting around the wo ...