They say the only constant is change, and that couldn’t be more true of the 2025 national advertising marketplace, as the U.S. experiences a new administration that seems both familiar and uncertain, and as major platforms’ and publishers’ futures adopt new stances or hang in the balance.
Meantime, a mini-version of musical chairs has beset the national investment teams at a handful of holding companies — the latest change at GroupM, where Matt Sweeney is leaving his post as U.S. chief investment officer. GroupM didn’t respond to requests for information about Sweeney’s replacement.
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