The Flip Flop That Isn't
If Omnicom wins Coca-Cola's North American media, it won't have switched sides. It will be working both. And the filings show the two cola companies betting in opposite directions.
In one of our group chats this week, someone summed up the cola agency shuffle in one line: if Omnicom wins Coke, they basically flip flop.
It's a good line. It's also not quite what would happen, and the difference is the most useful part of the story.
What moved
In March 2025, Publicis took Coca-Cola's North American media from WPP. On September 2, 2026, PepsiCo moved its global media account, about $1.7 billion of 2025 spend by COMvergence's estimate, from Omnicom to Publicis. There was no formal pitch, and Omnicom had held the business in most markets for more than 25 years.
The same week, Publicis withdrew from the pitch for Coca-Cola's international media, and Coke kept that business with WPP. Coca-Cola's North American media, estimated at $700 to $800 million, is now up for review. Omnicom and Dentsu are understood to be the two groups competing for it. Coca-Cola hasn't confirmed the shortlist.
| Account | Holder |
|---|---|
| Coca-Cola · international media | WPP (kept) |
| Coca-Cola · North American media | Omnicom or Dentsu, in review |
| Coca-Cola · Japan and Korea | Dentsu |
| PepsiCo · global media | Publicis (from Omnicom) |
| PepsiCo · creative, sports, PR | Omnicom |
Sources: Campaign US, September 2, 2026; Adweek; Ad Age; Marketing Dive; Digiday. The North American review status is as reported by the trade press and has not been confirmed by Coca-Cola.
Why it isn't a flip flop
Omnicom lost PepsiCo's media, but it didn't lose PepsiCo. It still handles Pepsi's creative, sports and PR work, including in North America.
So if Omnicom wins, one holding company would plan and buy Coca-Cola's media in North America while making Pepsi's advertising in the same market. That isn't a switch of sides. It's a seat at both tables, divided by discipline.
Whether Coca-Cola accepts that division is the real question in this review, more than which agency has the better deck.
The change in advertising expense from fiscal 2024 to fiscal 2025, as filed: Coca-Cola up to $5.4 billion, PepsiCo down to $3.4 billion.
Two companies, opposite bets
Neither move was a one-year blip. Over two years, Coca-Cola's advertising is up 8.0 percent and PepsiCo's is down 10.5 percent.
Two cautions. These are company-level advertising lines, not media billings, so they don't match the account values the trade press reports. And they describe what each company spent, not why.
What they do show is two different bets. PepsiCo is spending less and consolidating what's left into one partner and one operating model, which Publicis will run across more than 200 markets. Coca-Cola is spending more, but in North America it's the one being reorganized by moves it didn't make.
What each side is really choosing
Coca-Cola went from running a planned global review to choosing between the two groups still available. It has said it wants to move from traditional media planning toward reaching people through technology, including agentic tools. It isn't alone: so far in 2026, 350 annual reports filed with the SEC mention "agentic," up from 72 in all of 2025. That counts filings, not companies, and a mention isn't a commitment, but it shows what public companies now think is worth telling investors.
Omnicom is trying to replace a top-three client within weeks of losing it, while still integrating Interpublic, which it acquired last fall. Winning Coke would also test whether clients will accept one group on both sides of the cola war, split by discipline.
Dentsu already works with Coca-Cola in Japan and Korea. This is a chance to widen a relationship it already has.
PepsiCo keeps Omnicom on its creative. If Omnicom wins, Pepsi's creative partner would also be buying media for its biggest rival. Pepsi has said nothing publicly about that possibility.
No prediction market has priced the outcome. As of September 25, 2026, neither Polymarket nor Kalshi lists a market on it. Make your call at cultmath.com/predict/coke.
What it means if you advise brands
Your agency's other clients are part of your risk. Coca-Cola didn't lose leverage because of anything it did. It lost leverage because its agency took the rival.
Long relationships can end without a pitch. Twenty-five years of media work ended with no review. Decisions this size increasingly sit with transformation programs and the executive team, not only with the marketing seat.
Name what you're buying. Coca-Cola stated its criterion in public. A brief that names a capability gets a real answer. A brief that asks for "strategic partnership" gets a longer deck.
- You buy from a holding company that also serves a direct competitor, in any discipline.
- A renewal or review is inside the next twelve months, so a conflict clause can still be written in.
- Your category has two or three dominant rivals, where one account move changes everyone's options.
- Not yours if you work with a single independent agency that has no competitor on its roster, or your category is too fragmented for one move to matter.
Map your agencies' conflicts before your next renewal: every competitor they serve, by discipline and market.
Ask each agency for its client list in your category and the categories next to it, split by discipline (media, creative, PR, sports) and by market. Put it on one page next to your own roster. Anywhere a rival shares a holding company with you, decide now whether you accept the split, and write that answer into the contract before the review starts rather than after.
- What it costs
- A day of your time, plus one uncomfortable email to each agency. Some will answer slowly or partly; a partial answer is itself a finding.
- How you'll know
- At the next renewal, your contract names the competitors your agency may and may not serve, by discipline. If it doesn't, the map didn't make it into the room.
Related from Sound Decisions: Takis Beats Doritos · Same Cocoa Shock, Two Answers
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