Publicis Groupe just posted 5.7% organic growth in Q3 2025, upgraded guidance for the second time this year, and won more net new business than anyone else for the fifth consecutive year. The stock is down 16% year-to-date.
I don't normally write about stock prices. But when the market systematically misprices the entire business model underlying modern marketing, and when that mispricing reveals something fundamental about how CMOs should think about their agency partnerships, we need to examine it. Because what's happening to Publicis isn't about Publicis. It's about four gravitational forces reshaping how the market values marketing services, and those forces are reshaping your strategic options whether you're tracking stock prices or not.
Here's the core problem: Publicis is an architect's dream home on a street slated for demolition. Every renovation makes the house better: premium finishes, structural reinforcements, smart home technology. But the market still prices it based on the condemned buildings next door. Individual quality can't overcome categorical association when appraisers won't even walk through the door.
The company took the top spot in 2024, operates at 18% margins versus competitors' 15% at next best. Meanwhile, WPP for example posted negative growth, lost major accounts, and slashed guidance, yet both stocks move in tandem.
The Four Gravities Compressing Agency Valuations
Think of these as gravitational fields pulling downward on all agency stocks, regardless of individual performance. Together they create an undertow that even exceptional swimmers struggle against.
Gravity One: The Canary Effect
Marketing services are a leading economic indicator. When CFOs get nervous, marketing budgets get cut first. CMO budgets fell to 7.7% of company revenue in 2024, down from 11% pre-pandemic (Gartner) a 30% decline in relative resource allocation. More concerning: 64% of CMOs now say they lack sufficient budget to execute their strategy.
The market sees these numbers and sells the entire sector as a proxy for "things people cut when worried." Your multiple compresses even if you're personally gaining share within that shrinking pie.
Gravity Two: Platform Disintermediation
Meta's Advantage+ and Google's Performance Max are strategies to capture the layer agencies have traditionally owned. When Meta's AI automatically creates 150 creative variations with zero visibility into which creative ran or what drove conversions, the black box becomes complete. Meanwhile, 82% of major brands now have in-house agency capability of some form. Platforms commoditise the buying, brands bring strategy in-house, agencies get squeezed in the middle.
Gravity Three: AI Commoditisation
When Sam Altman says 95% of what marketers use agencies for will be "easily, nearly instantly and at almost no cost handled by AI," investors hear "margins going to zero." Forrester projects 33,000 agency jobs (7.5% of workforce) eliminated by 2030. If agencies are fundamentally people-businesses averaging $220,000 revenue per employee, and AI automates significant work, then margins compress or revenue must increase dramatically to offset headcount reductions. Most investors bet on margin compression.
Gravity Four: Peer Correlation
When WPP cut guidance in July 2025 and plunged 14% in a single day, Publicis shares declined too, despite having just reported another strong quarter. One player disappoints, the whole sector reprices. The holding companies trade at 10.57X forward P/E versus the S&P 500's 20.47X, a 48% discount reflecting deep skepticism about the business model's future.
But here's the thing: these companies are not the same. Publicis grew organic revenue 5.8% in 2024 while WPP declined 1%. That's a 680-basis-point gap, yet both trade within one turn of each other on forward P/E. That's lazy portfolio management treating all agencies as interchangeable.
Why These Gravities Overstate Publicis Risk
The market is making a categorical error: pricing Publicis as if it's equally exposed to these pressures as struggling peers. It's not.
On the Canary Effect: Yes, marketing budgets are constrained. But Publicis won $5.8 billion in net new business billings in 2024, the largest haul for five consecutive years. When clients have less budget, they consolidate with partners who deliver integrated solutions. Coca-Cola, Sam's Club, and Goodyear moved to Publicis from entrenched competitors not despite budget pressure, but because of it.
On Platform Disintermediation: The market lumps all agency revenue together, but Publicis's portfolio is fundamentally different. A far higher % of revenue comes from data, business transformation and technology capabilities compared to others. Epsilon manages identity graphs covering 4 billion consumer profiles post-Lotame acquisition, enabling personalisation that requires connecting platform data with client CRM data. Publicis Sapient's digital transformation consulting, competing with Accenture. This isn't media buying vulnerable to Meta Advantage+.
On AI Commoditisation: Publicis is one of the few holding companies where AI investment translates to revenue growth rather than just cost savings. The CoreAI platform integrates proprietary data across the entire ecosystem. This isn't ChatGPT for content generation, it's AI trained on 35 years of transformation work combined with Epsilon's consumer intelligence. Clients are buying these AI-powered offerings, which are growing double-digits and contributing to the 700 basis point outperformance versus competitors.
On Peer Correlation: This is pure market inefficiency. WPP lost Coca-Cola North America, Sky Media, and Pfizer. Publicis won them. WPP cut guidance twice. Publicis upgraded guidance twice. Yet when sector sentiment turns negative, both stocks sell off in tandem. That's not fundamental analysis.
I spent thirteen years inside Publicis, seven of those on the Management Committee. I've seen the transformation from the inside: the painful organizational changes, the strategic M&A execution, the consistent top-down vision that competitors couldn't match. What Arthur Sadoun built through the "Power of One" integration took five years of grinding cultural work that WPP and Omnicom still haven't replicated. Revered industry analyst Michael Farmer captures it: "Publicis is enjoying the fruits of a committed, top-down, fully-integrated strategy... WPP and Omnicom appear wedded to 'business as usual,' but it is not happening."
The Five Moats the Market Isn't Pricing
If the Gravities explain why the market undervalues the sector, the Moats explain why Publicis deserves to escape that gravity.
Based on my experience and current market analysis, Publicis has built competitive advantages that are still underappreciated. As I've written at length about them previously, here is a super-short summary:
First-Party Data Infrastructure: Owning the largest identity resolution platform outside walled gardens is a structural advantage in a post-cookie world. Epsilon's CORE ID covers 250 million U.S. consumers and 4 billion globally. This took five years to build and integrate. There's no shortcut.
Transformation Consulting at Scale: With one in four staff being engineers, Publicis competes with Accenture on enterprise digital transformation. No other holding company has comparable capability. When clients need someone who understands both marketing technology and enterprise IT, there's one integrated player. This diversity of revenue source is critical.
Operational Integration: While competitors run siloed agency brands, Publicis subordinated individual agencies to a unified platform. Clients get seamless access to data from Epsilon, technology from Sapient, media from Starcom, creative from Leo Burnett in integrated teams. The 'Power of One' is real. The Primary P&Ls are geography and then client. I don't think they are even able to (or want to) know any network brand P&L as this is not relevant to being relevant to a client. Omnicom is acquiring IPG to build comparable scale, but they're 3-5 years behind on actual integration.
The Winning Unitary Culture: I've written previously about 'jerseys', that in every holding company all employees have two jerseys to wear, like champion football players. One for their club (network brand), the other for their country (holdco). In every other holding company, players prefer their club jersey to belong to their tribe. In Publicis, it's the opposite. Publicis is a company, not a holding company. This is so easy to state, I cannot underline how hard it was to achieve, and of these moats, is the 2nd hardest to replicate. The last is the hardest.
Leadership Clarity: The unique moat that is impossible to replicate is Arthur. CEO Arthur Sadoun has executed a consistent transformation strategy since 2017. There's no pivot every 18 months, no shuffling of agency brands, no merger-of-equals drama. Just steady execution of a clear vision, made by a man who works with as much diligence and focus as anyone else at all times, and inspires the best in all others.
The house renovations are complete. The problem is the neighbourhood.
My Personal View (Not Investment Advice)
Here's my read: the market assumes the pie will shrink at a rate that offsets the Publicis share gains. Even if they keep winning accounts and outperforming, investors believe structural pressures such as budget cuts, disintermediation, AI commoditisation, will eventually overwhelm individual execution.
Over a 3-year horizon, I think this is too pessimistic about how the gravities specifically affect Publicis. Not because the pressures aren't real (they absolutely are) but because Publicis systematically positioned itself in parts of the value chain that are growing, not declining. First-party data and identity? Growing as cookies die. Commerce and retail media? Exploding as brands fight Amazon. Enterprise digital transformation? Growing as AI creates modernisation imperatives.
The stock trades at a P/E of 10.93 while growing organic revenue 5.7% with 18% margins and gaining market share. That's a 9-10% free cash flow yield for a growing business taking share from competitors. When a company consistently beats expectations for five consecutive years, upgrades guidance twice in a single year, and still trades at a significant discount, something is wrong.
I think that there are two catalysts for revaluation:
The first will likely be the Omnicom-IPG merger. If the merged entity struggles with integration and client conflicts (as most mega-mergers do) it will highlight Publicis's advantage from having done that hard work five years ago. By the time the strategic differentiation becomes undeniable, the mispricing is gone.
The second will be the ability to become incomparable, to break itself away from the average multiples. Being better is not enough. They need to find a way to be different, and be classed with the firms being seen as transforming the world. I think the secret to this will be unlocking dramatically more power from the CoreID stack than they do today.
In both cases, it means that Publicis has maxed out on renovation, and knows that it is time to move the entire building to a new neighbourhood.
I get a lot of requests for recommendations of partners and products to use. So I'm going to start highlighting the most common request responses here in the "Brandflow Toolkit". If you are an agency team of one, or a marketing leader of many, these are what I use with clients:
First of all, time is all you have and I protect mine with Sunsama. I've tried many, and this is the optimal partner to keep the important stuff, important.
CRM can be a massive distraction, but it can also be expensive to solve. I find that Pipedrive is a great solution that is lower cost, and does the Salesforce-like stuff that matters without all the extras.
For all things audio, ElevenLabs is the best, not just for text-to-speech but whole soundtrack and now even song creation. Stay out of the studio.
Bright Data have solved the data deluge problem by helping to target what you need. They are the #1 web data platform and can help you source what matters, or they have existing datasets.
Speaking of data, you need to make sense of it all, and for this I recommend Adriel. I find it's the best middle-market solution for dashboarding, custom analytics and AdOps.
And for anything outside the above, yes literally anything, it's on Fiverr. I've been using Fiverr for 12 years now, from app coding to homebrew beer labels. Hire the right person for the right task, and pay for deliverables not time.
Brandflow is written by Justin Billingsley, who has spent his career on all three sides of the industry's table: senior client, global agency leader, technology founder. First published 27 October 2025 in the Brandflow newsletter on LinkedIn.