KFC Just Dumped Pepsi After 40 Years. 3 Stocks Feel It.

KFC will pour Coca-Cola in its US restaurants starting in January, ending a run with Pepsi that began in 1986. For PepsiCo, the lost sales are small. The pattern behind them is not. And for Yum Brands, the switch is a bet that a drink can help fix its weakest chain.

HeyTheo Research · Friday, October 16, 2026

Quick Read

• Yum! Brands (YUM) said KFC's roughly 3,700 US restaurants will switch from Pepsi to Coca-Cola (KO) starting in January 2027, finishing by the end of March.

• PepsiCo (PEP) loses an estimated $50 million a year, under 0.2% of its North American drinks business. The money is small. The trend is the story: Coke has also taken Marriott, Costco's food courts, Culver's and Arby's.

• Taco Bell, Yum's biggest US chain, stays with Pepsi. Its Mountain Dew Baja Blast is too valuable to give up.

• KFC's US sales fell 5.2% in 2024 and 4.6% in 2025. The switch is part of a turnaround push built on new drinks.

What happened

On Thursday, Oct 15, KFC said its US restaurants will start pouring Coca-Cola next year. It is the first drink-supplier change at the chain in decades.

The history explains why that is unusual. PepsiCo bought KFC in 1986, and KFC served Pepsi from then on. When PepsiCo spun off its restaurants in 1997, the company that became Yum Brands kept the Pepsi contract. Before 1986, KFC was Coca-Cola's second-largest fountain customer, behind only McDonald's.

Source: Yum Brands, KFC, The Wall Street Journal

The stocks reacted on the day: Yum rose almost 3%, Coca-Cola rose under 1%, and PepsiCo slipped.

How small the account really is

A fountain contract pays the drink company for syrup. The restaurant adds water, ice and carbonation, and keeps most of the cup price.

One analyst estimate puts KFC's US drink sales at $350 million to $400 million a year. The supplier's share is about $50 million, or roughly 13 cents of every drink dollar. Against PepsiCo Beverages North America's $28.2 billion of revenue in 2025, that is under 0.2%.

So this will not move PepsiCo's earnings. It moves something harder to measure: where Americans see the logo when they eat out.

Research cue · try it in HeyTheo

Ask Theo for the bull case, bear case and what to watch on PepsiCo, and add: "how much of PepsiCo's revenue comes from restaurants and other away-from-home accounts versus grocery shelves?" It shows how exposed the stock is to more switches like this one. Open HeyTheo

Start with: search PEP, then ask the question above.

The pattern: Coke keeps winning the counter

KFC is the latest in a run of big accounts moving the same way.

Source: company announcements, Benzinga, Business Model Analyst, Zenith Market Intel

Subway is Pepsi's one large recent win. Marriott told its franchisees Coca-Cola is preferred globally by a margin of 2 to 1.

The stock market has noticed. Coca-Cola is up about 32% this year. PepsiCo is down about 11%, and its North American drink volumes fell 2% last quarter.

The bull and bear case on each

Coca-Cola. The bull case: every account it wins adds visibility and a steady stream of syrup sales, and its partners get help building new drinks like refreshers and iced coffees. The bear case: after a 32% run this year, much of the good news may already be in the price, and the KFC account itself adds little to a company of Coke's size.

PepsiCo. The bull case: the lost revenue is tiny, its snack business is larger than its drinks business, and it kept Taco Bell, the account that matters most. The bear case: losing accounts one at a time is how a market position erodes, and drink volumes are already shrinking.

Yum Brands. The bull case: Taco Bell, its biggest earner, keeps the Pepsi drinks that power its beverage push. KFC US is a small part of profits, so a turnaround there is pure upside. The bear case: KFC's problems are about chicken, prices and competition, and a new soda will not fix those on its own.

Research cue · try it in HeyTheo

Build a two-stock basket of Coca-Cola and PepsiCo and track the gap between them. Then use the backtester to see how each stock did in the six months after past account switches, such as Subway in 2024 and Marriott in 2026. It shows whether these headlines have moved the stocks for long. Open HeyTheo

Start with: search KO, then add PEP to the same basket.

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Why Yum did it: KFC needs a reason to visit

KFC is losing the US chicken war.

Its US sales fell 5.2% in 2024 and 4.6% in 2025, while Chick-fil-A grew 5.2%. KFC closed at least 312 US restaurants in the year to July 2026. Yum now says KFC US makes up "materially less than 5%" of its operating profit, excluding Pizza Hut, and has stopped breaking out its US same-store sales.

Drinks are one of the few tools that can bring people in between meals. Drinks make up about 8% to 9% of KFC's US sales, and they carry the highest margin on the menu. KFC is already testing iced coffees and shakes. Coca-Cola has a track record of helping chains build exactly that kind of menu.

Taco Bell shows what the playbook looks like. Its Baja Blast drink, built with PepsiCo, is a reason people visit, and Yum is aiming for $5 billion in Taco Bell beverage sales by 2030. That is why Taco Bell is staying with Pepsi.

Research cue · try it in HeyTheo

Set a trigger on Yum Brands for its next earnings report: "tell me if KFC's US sales are mentioned as improving or declining." Then ask Theo to compare Yum's sales growth by brand over the last four quarters. It shows whether the fix is working before the drinks even change. Open HeyTheo

Start with: search YUM, then set the earnings trigger.

Research it yourself: rules HeyTheo tracks

• Coke vs Pepsi spread. A two-stock basket tracking the gap between Coca-Cola and PepsiCo, flagged when it widens by more than 5 points in a month.

• Account-change trigger. Flags any holding named in a major supplier or partner switch.

• Volume trigger. Flags any consumer staple whose reported unit volume falls for two quarters in a row.

• Ask Theo. Try: "Which of my stocks depend on a single large customer?" or "Give me the bull and bear case on PepsiCo after losing KFC."

Check the rule behind any trigger before acting on it. You trade through your own broker; HeyTheo helps you decide.

The Fountain Count

The KFC switch costs PepsiCo about $50 million, which is a rounding error. What it adds to is a count: Arby's, Culver's, Costco, Marriott and now KFC, against Subway on the other side.

For Coca-Cola, the count supports a story the market already pays for. For PepsiCo, it is a question about whether drinks are still a growth business. For Yum, it is a turnaround bet that starts at the soda fountain. Watch PepsiCo's next volume number and Yum's next word on KFC US sales. Those will say more than the headline did.

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Sources

Yum Brands, KFC, The Wall Street Journal, CNBC, Evercore ISI, Benzinga, Business Model Analyst, Zenith Market Intel, Restaurant Business, Technomic, Capital Digest

Disclaimer

Disclaimer: HeyTheo is a research and education platform, not an investment adviser or broker-dealer. Nothing here is advice to buy, sell, or hold any security. You trade through your own broker; HeyTheo helps you decide. Backtested results are hypothetical and do not guarantee future returns. References to governments, officials, or policies are for market context only and are not political endorsements. All investing involves risk, including loss of principal. Data is as of the dates noted.