Publicis said second quarter revenue rose more than 15 percent to 1.6B euro, although organic growth inched along at only 1.6%.
For the first half, Publicis saw a 2.8% climb in organic growth to revenue of just under $4B.
Net income climbed 9% to 275M euro for the first half.
CEO Maurice Levy said the conglomerate expected a drop off in organic growth in Q2 because of the global economic slowdown, but he expects it to pick up in Q3.
"The world economic situation is both volatile and uncertain," he said. "We need to maintain the greatest possible vigilance regarding our costs and investments."
Levy said North America showed "resilience" as Publicis lost GM's media and search account and healthcare remained sluggish.
Publicis said its flagship PR unit MSLGroup picked up key new business from Walmart (Hong Kong) and Taitra (Taiwan) during the first half of the year.
Its Specialized Agencies and Marketing Services division, or SAMS, which houses MSL, represents 19% of its overall revenue.