Mediapost reports that 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 by Comvergence. Carat bumped Publicis' Spark Foundry to No. 3, due in part to a 3.5% annual billings slide, but the biggest loser of the year was Omnicom's Hearts & Science, which declined 31.9%, falling from No. 7 in 2018 to No. 10 in 2019.
Details at mediapost.com