Ad Tech Company Trade Desk Stock Plummets After Client Advisory Report

Shares of advertising technology company Trade Desk dropped nearly 6% Wednesday following reports that major ad agency Publicis advised clients to avoid the platform. The recommendation came after an audit allegedly found contract violations, though Trade Desk disputes failing any audit.

Shares of advertising technology company Trade Desk experienced a significant decline Wednesday after reports surfaced that major French advertising agency Publicis Groupe recommended clients steer clear of the company’s media purchasing platform.

The stock dropped almost 6% during trading, building on Tuesday’s 7.4% decline following an Ad Age report detailing concerns from a Publicis audit. According to the report, the audit discovered that Trade Desk had breached several contract terms, leading to the negative client advisory.

The audit reportedly revealed that Trade Desk imposed fees beyond agreed-upon limits and enrolled clients in additional services without proper authorization, according to the publication’s sources.

Publicis Groupe has not provided comment on the matter when contacted by Reuters.

Trade Desk responded to the allegations in a statement, saying: “We’re aware of questions related to a Publicis audit process. Any notion that TTD failed an audit is not true.”

The company operates as an independent platform that allows brands and advertising agencies to purchase advertisements and manage campaigns across various websites and applications, differentiating itself from closed advertising systems like those operated by Google and Facebook.

Following the news, at least two investment firms reduced their stock ratings, while three others lowered their price projections for the company.

Stifel downgraded its recommendation from “buy” to “neutral,” stating: “We’re not quite sure how conservative current 2026 estimates might be if the company does, in fact, lose some of its client base as a result of this audit.”

The company has faced challenges recently, with its first-quarter revenue projections missing analyst expectations last month. Trade Desk shares have declined approximately 34% year-to-date, following a 68% drop in 2025.

The advertising technology firm confronts intense competition from integrated platforms that combine content, commerce, and user information to appeal to advertisers. Amazon’s advertising platform has emerged as a particularly strong competitor due to its extensive consumer purchasing data.

Rosenblatt Securities analyst Barton Crockett suggested that declining revenues might be driving advertising agencies toward more aggressive negotiations with Trade Desk and expansion into competing services.

“We see potential that this could be emblematic of a structural change,” Crockett noted.