As reported by The Information.
Walmart’s ad revenue grew 37% year-over-year in Q1 FY27 — outpacing Amazon Ads. The structural shift from thin-margin retailer to high-margin platform is now measurable, and agentic commerce is about to make first-party purchase data the most valuable asset in digital advertising.
What Happened
Walmart’s global advertising revenue grew 37% year-over-year in Q1 FY27 — the quarter ending April 30, 2026 — outpacing both Amazon Ads (roughly 24%, per The Information’s comparison) and Walmart’s own eCommerce growth of 26%. Walmart Connect, the US retail-media network, grew 44% excluding Vizio — the connected-TV maker Walmart acquired in 2024. These are not rounding-error beats. They represent a business-model layer that is compounding faster than the core retail engine.
The most structurally significant number from Walmart’s Q1 FY27 earnings: advertising and memberships together now account for roughly one-third of Walmart’s total profit. A retailer historically running on 2-3% net margins has quietly built a high-margin platform layer on top of its physical and digital commerce infrastructure. The mix shift is not cosmetic — it is structural.
The “Amazon-sized opportunity” framing — credited to The Information — rests on a single ratio: Walmart’s advertising-to-sales sits at roughly 0.9%, versus Amazon’s approximately 8%. That is the headroom bulls are pricing in. It is an opportunity, not a roadmap. Walmart’s model differs from Amazon’s in meaningful ways, and convergence to 8% is not a base case — it is a ceiling that defines the size of the prize, not a target the company has committed to.
The key insight: Advertising is the highest-margin layer of commerce — higher than logistics, higher than subscriptions, orders of magnitude higher than grocery. When a retailer’s advertising line grows faster than its eCommerce line, the company is not executing a retail strategy. It is executing a platform strategy. Walmart crossed that threshold in Q1 FY27.
The Structural Read
Amazon ran this playbook first. It built logistics and marketplace infrastructure, monetized the captive audience with ads, and ultimately became one of the three largest digital ad platforms in the world — not because it set out to, but because it sat between buyers and sellers with unmatched purchase intent data. Retail media is the toll road on commerce, and the operator with the most traffic and the best data owns the pricing power.
Walmart’s structural edge is a combination of assets that Amazon cannot fully replicate: first-party purchase data spanning physical stores and eCommerce (a closed loop Amazon lacks at the same physical density), and Vizio’s CTV inventory with ACR data that enables attribution from a TV ad impression all the way to a in-store or online purchase. That screen-to-shelf loop is genuinely differentiated. No major digital platform outside Walmart owns both the TV screen and the checkout lane.
Now layer in what comes next: agentic commerce. As AI agents increasingly mediate the discovery and purchase decision — browsing on a user’s behalf, comparing prices, adding to cart — the ad networks that win will be those with first-party purchase data and closed-loop attribution. An agent optimizing for “best shampoo under $12” needs to trust the signal it’s buying. Walmart’s data — rooted in actual transaction history across 240M+ weekly shoppers — is exactly that signal. The networks without it will be bidding on intent. Walmart will be bidding on behavior.
Harness Theory — Business Engineer
“The companies that win the AI era are not necessarily the ones building the models — they are the ones with the data, distribution, and closed-loop feedback that make AI outputs commercially actionable. Walmart does not need to build the agent. It needs to be the destination the agent trusts.”
Advertising-to-Sales Ratio — The Gap
The gap between 0.9% and 8% is the opportunity bulls cite — not a target Walmart has set. Sources: The Information, Walmart Q1 FY27 earnings, eMarketer.
Three Implications
FOR WALMART — THE MARGIN MIX IS THE STORY
Grocery and general merchandise will keep growing, but they will never expand margins meaningfully. Advertising will. If ads and memberships already represent one-third of profit on a fraction of revenue, every incremental ad dollar is structurally transformative. Analysts should model Walmart less like a retailer and more like a platform operator with a retail distribution moat. The multiple expansion case is there — if the ad growth rate holds.
FOR AMAZON — WALMART IS NOW A REAL COMPETITOR IN THE AD STACK
Amazon Ads grew ~24% in the same period Walmart grew 37%. That gap will get attention from CPG brands and agencies. More consequentially, Walmart’s physical-store data and Vizio’s CTV attribution create a closed-loop that Amazon’s digital-only ad product cannot match for brands selling in physical retail. Amazon still leads by an order of magnitude in absolute ad revenue — but the competitive dynamic is shifting from “Amazon vs. Google/Meta” to a three-way race that now includes Walmart.
FOR THE AD INDUSTRY — AGENTIC COMMERCE RAISES THE STAKES ON FIRST-PARTY DATA
As AI agents begin mediating purchase decisions, the value of cookie-based or intent-signal advertising collapses. What survives is behavioral purchase data — what people actually bought, when, and at what price. Walmart owns that data at physical-commerce scale. The brands and agencies that understand this shift early will reallocate spend toward retail-media networks with closed-loop attribution. Those that don’t will keep buying intent signals on platforms that can no longer verify the conversion.
