Omnicom’s OMD remained the top U.S. media agency in terms of media billings volume, but Dentsu Aegis Network’s Carat had the best year overall, jumping from No. 3 in 2018 to No. 2 in 2019, thanks to
an 18.5% gain, according to final estimates released today by Comvergence.
an 18.5% gain, according to final estimates released today by Comvergence.