Ad Firms Padded Profit at Client Expense, Study Said to Find

  • Yet-to-be released report said to criticize agency practices
  • Former Coca-Cola executive calls for probe by U.S. authorities

Ad agencies and their media-buying firms have systematically enriched themselves at the expense of their U.S. clients, according to a report commissioned by an industry group that represents large advertisers, said a person who has seen the document.

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