NEW YORK, Feb. 15, 2018 /PRNewswire/ — Omnicom Group Inc.(NYSE: OMC) today announced that its net income for the fourth quarter of 2017 decreased $95.9 million, or 27.4%, to $254.4 million from $350.3 million in the fourth quarter of 2016.  Diluted net income per common share for the fourth quarter of 2017 decreased thirty-eight cents, or 25.9%, to $1.09 per share versus $1.47 per share for the … Continue reading Omnicom Group Reports Fourth Quarter and Full Year 2017 Results