Omnicom audit of The Trade Desk triggers industry scrutiny and market reaction

Omnicom Group has initiated a third-party audit of The Trade Desk, intensifying scrutiny over pricing practices in the programmatic advertising sector and contributing to a decline in the company’s share price.

The review, first reported by Ad Age, focuses on the demand-side platform’s fee structure and contractual arrangements with the agency group. The move follows broader industry tensions after Publicis Groupe raised concerns about potential hidden fees tied to certain services.

According to reports, Omnicom has engaged an external auditor to examine its agreements with The Trade Desk as part of an expanded due diligence process. The initiative has been described as a precautionary step, with early internal assessments indicating no immediate negative impact on clients.

In comments reported by Campaign Asia-Pacific, The Trade Desk stated that previous audits conducted in collaboration with Omnicom had not identified irregularities, framing the latest review as part of standard oversight practices within ongoing partnerships.

The developments have had an immediate market impact. Shares of The Trade Desk declined by roughly 8% following news of the audit, highlighting investor concerns around transparency and fee structures in digital advertising.

The audit also reflects broader tensions between The Trade Desk and major agency groups. Publicis previously advised clients to avoid the platform after conducting its own review, which raised questions around fee disclosures and data usage. The Trade Desk has disputed those claims, citing confidentiality obligations with partners.

The situation underscores ongoing debates within the programmatic advertising ecosystem, where agencies and advertisers are pushing for greater transparency in media buying, while platforms seek to maintain control over proprietary systems and data relationships.

The outcome of Omnicom’s audit remains uncertain, but it is likely to influence how agency groups assess partnerships with independent ad tech platforms and could shape future expectations around accountability in digital advertising.