After yesterday's dramatic plunge (-9.24%), Publicis is once again taking a hit this Wednesday, falling 11% over the past week and down 14% since January 1.

In its note explaining the downgrade to equal weight, British bank Barclays highlights that, according to its buyside AI survey, agencies are widely seen as the most at-risk sub-sector within European media.

"WPP, Omnicom, and Publicis (in that order) are the No. 1, No. 2, and No. 3 'AI losers' in our survey. Their revenues are also expected to be the hardest hit in 2026 and 2027, while fewer than a third of respondents see a chance for a re-rating in 2026 in terms of multiples. So we have a situation that is a carbon copy of last year, when the stock underperformed and the majority of investors were negative. We believe this is not conducive to outperformance," the broker argues.

Yesterday, despite a robust 2025 performance, the company chaired by Arthur Sadoun saw its outlook met with a chilly reception from investors.

Publicis, which posted a 4.2% rise in net revenue in 2025 to a record €14.55 billion, is forecasting organic growth of between 4% and 5% for this year, following a 5.6% increase in 2025.