2021 May – MediaPost (Global) – Madison Avenue’s biggest media buyers saw their total media billings volume erode in 2020, but not at the rate of the overall marketplace, making the U.S.’s “Big 3” -Publicis Media, GroupM and Omnicom Media Group- bigger fish in a shrinking pond. While the 29 U.S. media agencies analyzed by Comvergence saw their average media billings decline 15.3% in 2020, Publicis Media’s fell 11.7%, GroupM’s dropped 11.5% and Omnicom Media Group’s slid 15.0%.

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