Chase, the U.S. consumer and commercial banking division of JPMorgan, has called in auditors to examine its relationship with Publicis Groupe media agency ZenithOptimedia, the company that
buys advertising on its behallf, according to a Business Insider report. "A source told Business Insider the decision to call in auditors around two weeks ago is a direct
response to the high-profile report published earlier this month by the Association of National Advertisers (ANA), which alleged that volume discount rebates and other non-transparent
business practices are 'pervasive' in the U.S. media ad-buying ecosystem."
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