Publicis Tells Clients to Drop The Trade Desk After Failed Audit

Publicis has advised clients to stop using The Trade Desk after a third-party audit by FirmDecisions found the DSP improperly layered fees onto client invoices and failed to validate that media and data costs were billed at cost. The Trade Desk disputes the findings, claiming the auditor’s data requests would have violated confidentiality agreements with other partners. The fallout follows Dentsu and WPP’s quiet exits from The Trade Desk’s OpenPath product over similar transparency concerns, marking a coordinated erosion of holdco confidence in the industry’s most prominent independent DSP.

Adweek: Publicis Advises Clients to Avoid The Trade Desk, According to a Leaked Memo

The Trade Desk Is Still Dominant, But Advertisers Are Shopping Around

The Trade Desk posted $2.9 billion in 2025 revenue with 47% margins and $1.3 billion in cash, yet interviews with more than 10 ad executives reveal growing frustration with account team turnover, aggressive contract tactics, and the rise of viable alternatives. Amazon DSP is gaining share by bundling retail media data with Prime Video inventory, while agencies like Markacy are shifting spend toward direct buys and retail media networks where measurement is cleaner. The more serious structural threat: as AI lowers switching costs for programmatic execution, The Trade Desk’s core DSP function risks becoming commoditized infrastructure competing on price rather than platform sophistication.

Digiday: The Trade Desk remains the dominant DSP but its advertisers are starting to shop around

Principal Media Is Reshaping the Agency Business, Whether Holdcos Admit It or Not

Principal media buying has quietly become a multibillion-dollar revenue engine for holding companies, with Omnicom’s principal media revenue growing to $1.4 billion in 2025 and WPP’s GroupM generating over $1 billion in what it internally calls “non product related income.” The practice, which allows agencies to buy inventory at wholesale and resell it to clients at a markup, fundamentally misaligns the traditional agent/client incentive structure, even as holdco leaders insist it’s just another product. Notably, none of WPP’s top 20 clients participate in principal media on the buy side, a revealing data point given that many of those same brands are themselves sellers of principal media inventory.

AdExchanger: The Rise Of Principal Media And The End Of The Agencies As We Knew Them

OpenAI Is Building an Ads Manager, But ChatGPT’s Ad Business Has Growing Pains

OpenAI has begun testing a self-serve Ads Manager dashboard with a small group of partners, giving marketers the ability to launch, monitor, and optimize campaigns inside ChatGPT in real time, though early testers are still receiving performance data via weekly CSV reports. With a reported $200,000 minimum commitment and click-through rates trailing Google Search, the pressure is on OpenAI to prove that conversational AI ads can deliver measurable ROI before brands shift meaningful budget.

Adweek: OpenAI is Testing An Ads Manager, As Its New Ads Business Fights Growing Pains

Forget Domain Lists; Programmatic Quality Lives in the Bid Request

SWYM.ai CEO Ravi Patel argues that the industry’s reliance on domain-level curation is structurally incomplete, since a single publisher can generate tens of thousands of unique bid request permutations per day, with performance variance between those permutations often exceeding variance between publishers. The solution is “bid rationalization,” shifting quality control to the request level by prioritizing specific combinations of placement, device, geo, and supply chain directness across the full SSP portfolio.

AdExchanger: Why Programmatic Quality Control Needs To Focus On The Bid Request, Not Domains

Shopify Brings Purchases Inside ChatGPT via Agentic Storefronts

Shopify told merchants their products will soon be discoverable and purchasable inside ChatGPT through a new “Agentic Storefronts” channel that launches by default, while OpenAI retreats from its native Instant Checkout feature and shifts transactions back to merchant-owned storefronts. The move signals that AI commerce is evolving toward product discovery inside chat interfaces, with checkout still anchored to traditional retail infrastructure, a critical distinction for brands mapping their AI distribution strategy.

Modern Retail: Shopify says purchases are coming ‘inside ChatGPT’ through agentic storefronts as OpenAI retreats on Instant Checkout

FTC Commissioner Meador Puts Ad Tech on Notice Over Cookies and Self Regulation

Speaking at Marketecture Live, FTC Commissioner Mark Meador warned that industry self-regulation only works when backed by neutral enforcement bodies and cautioned that cookie-based opt-outs face growing scrutiny over whether they deliver meaningful consumer control. He also flagged competition concerns around platforms that use privacy as a pretext to consolidate browser and data market power, a barely veiled reference to Google’s approach to the open web.

AdExchanger: Hot Takes From FTC Commissioner Mark Meador On Cookies And The Limits Of Self‐Regulation

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