⚠ The App Between Walmart and the CustomerModerate threat

Walmart (WMT) — threat to the moat

The grocery habit is only Walmart's asset while Walmart owns the transaction.

The grocery habit is only Walmart's asset while Walmart owns the transaction. A delivery platform that stands between the shopper and the shelf takes the relationship, the data and eventually the margin.

Who stands between Walmart and the shopperWalmart's own app and site: eCommerce +23%, advertising +38%Marketplace on Walmart properties: sales +52%A delivery platform: owns search, substitution and the ad slotAn AI assistant: one answer, no product page, no $6.4bn of adsWalmart has put its own Sparky agent inside ChatGPT as a hedge.
The grocery habit is Walmart's asset only while Walmart owns the transaction. An intermediary that owns the order owns the advertising inventory too.

This is not hypothetical. Walmart's own risk factors describe customers using digital means including "websites" and captive platforms, and warn that a greater concentration of eCommerce sales — including increasing online grocery — could reduce store traffic and therefore the cross-shopping that traffic creates1. The company also names, among its competitors, "social commerce platforms" and companies offering "fulfillment and delivery services"2: intermediaries rather than retailers.

The threat has a specific shape in grocery. If a household's weekly food order is placed inside a third-party app, the app owns the search, the substitution, the promotion and the advertising inventory. Walmart becomes a fulfilment provider on somebody else's platform, paid a wholesale-like margin for the hardest, most labour-intensive part of the job while the intermediary keeps the part that scales.

Walmart's defence is to own the app, and it has done that well — eCommerce grew 23% globally in the June 2026 quarter, led by store-fulfilled pickup and delivery and marketplace3, and the growth is overwhelmingly on Walmart's own properties. Marketplace sales growing 52%4 shows an ecosystem forming rather than eroding.

The place it could go wrong is agentic shopping, where an assistant rather than a person chooses the retailer. Walmart has responded by putting its own agent inside ChatGPT5, which is a reasonable hedge and also an admission that the customer may arrive somewhere else first.

Watch the share of Walmart's eCommerce that originates on Walmart's own properties. The company does not disclose it. The proxy is advertising growth — 38% in the June quarter6 — because advertising only works if Walmart still owns the shelf the customer is looking at.

References
  1. ReportedWalmart's own risk factors describe customers using digital means including "websites" and captive platforms, and warn that a greater concentration of eCommerce sales — including increasing online grocery — could reduce store traffic and therefore the cross-shopping that traffic creates.
    Walmart Form 10-K, fiscal year ended January 31, 2026 - Item 1A Risk Factors and Item 5 (the eCommerce concentration and AI-enabled platform risk factor; five-year cumulative total return with $100 invested on February 1, 2021 worth $272.28 in Walmart against $201.03 in the S&P 500 and $164.12 in the S&P 500 Consumer Discretionary Distribution and Retailing Index; the $20.0 billion November 2022 repurchase programme with $4.0 billion remaining and the new $30.0 billion authorisation approved February 2026) — FY2026 (ended January 31, 2026) · publ. March 13, 2026 · source ↗
  2. ReportedThe company also names, among its competitors, "social commerce platforms" and companies offering "fulfillment and delivery services": intermediaries rather than retailers.
    Walmart Form 10-K, fiscal year ended January 31, 2026 - Item 1 Business and Item 2 Properties (approximately 280 million customers a week across more than 10,900 stores in 19 countries; 2.1 million associates, 1.6 million in the U.S.; 4,611 Walmart U.S. retail units of which 3,728 owned, 601 Sam's Clubs of which 464 owned, 5,743 international stores of which 1,486 owned; 3,566 supercenters at 633,724 thousand square feet, 351 discount stores at 36,609, 694 neighborhood markets and small formats at 36,609/28,375 with a 42,000 average; 192 U.S. and 179 international distribution facilities, 149 owned; pickup and delivery at over 8,400 locations globally; EDLP and EDLC; private brands; competition; Flipkart and PhonePe majority stakes in 2018) — FY2026 (ended January 31, 2026) · publ. March 13, 2026 · source ↗
  3. ReportedWalmart's defence is to own the app, and it has done that well — eCommerce grew 23% globally in the June 2026 quarter, led by store-fulfilled pickup and delivery and marketplace, and the growth is overwhelmingly on Walmart's own properties.
    Walmart second-quarter fiscal 2027 earnings release (Form 8-K exhibit 99.1) - revenue $187.9 billion +5.9% and +5.1% in constant currency; operating income +28.8% and +17.4% adjusted in constant currency; global eCommerce +23%; global advertising +38% with Walmart Connect excluding VIZIO +43%; membership fee revenue +17%; gross profit rate +96 basis points and Walmart U.S. +158; Walmart U.S. comp sales +2.6% and operating income +20.6% with operating expenses deleveraged 72 basis points; Sam's Club operating income +44.3% and International +16.6%; ROA 8.0% and ROI 15.4%; free cash flow $5.5 billion; 42.3 million shares repurchased for $5.1 billion year to date; FY27 guidance of 4.0-5.0% net sales growth, 7.0-8.5% adjusted operating income growth and $2.80-$2.87 adjusted EPS — Q2 FY2027 · publ. August 20, 2026 · source ↗
  4. ReportedMarketplace sales growing 52% shows an ecosystem forming rather than eroding.
    Walmart second-quarter fiscal 2027 earnings presentation (Form 8-K exhibit 99.2) - Walmart U.S. comp sales +2.6% with transactions excluding fuel +1.5% and average ticket excluding fuel +1.1% against total like-for-like inflation of 1.4%, and an approximately 125 basis point pharmacy headwind from maximum fair price regulation; eCommerce +24% including approximately 43% growth in store-fulfilled delivery, total advertising +38% including Walmart Connect +43%, and Marketplace sales +52%; expedited deliveries under three hours approximately 37% of store-fulfilled orders; share gains across categories and income tiers led by upper-income households — Q2 FY2027 · publ. August 20, 2026 · source ↗
  5. ReportedWalmart has responded by putting its own agent inside ChatGPT, which is a reasonable hedge and also an admission that the customer may arrive somewhere else first.
    Retail Dive - Walmart brings its Sparky commerce agent to ChatGPT as an in-platform app experience, following the October 2025 OpenAI partnership allowing customers to discover and buy Walmart items inside ChatGPT — 2026 · publ. 2026 · source ↗
  6. ReportedThe proxy is advertising growth — 38% in the June quarter — because advertising only works if Walmart still owns the shelf the customer is looking at.
    Walmart second-quarter fiscal 2027 earnings release (Form 8-K exhibit 99.1) - revenue $187.9 billion +5.9% and +5.1% in constant currency; operating income +28.8% and +17.4% adjusted in constant currency; global eCommerce +23%; global advertising +38% with Walmart Connect excluding VIZIO +43%; membership fee revenue +17%; gross profit rate +96 basis points and Walmart U.S. +158; Walmart U.S. comp sales +2.6% and operating income +20.6% with operating expenses deleveraged 72 basis points; Sam's Club operating income +44.3% and International +16.6%; ROA 8.0% and ROI 15.4%; free cash flow $5.5 billion; 42.3 million shares repurchased for $5.1 billion year to date; FY27 guidance of 4.0-5.0% net sales growth, 7.0-8.5% adjusted operating income growth and $2.80-$2.87 adjusted EPS — Q2 FY2027 · publ. August 20, 2026 · source ↗
Sources
Generated September 22, 2026