Walmart and Costco Outperform as Retail Titans Show Resilience

Why It Matters

The divergent growth engines of Walmart and Costco illustrate how the two retail giants are adapting to a fragmented consumer landscape. Walmart’s rapid expansion into high‑margin advertising diversifies earnings beyond thin grocery margins, positioning the company to capture a larger share of digital ad spend. Costco’s membership model, meanwhile, offers a stable, recession‑resistant revenue stream that can absorb macro shocks and fund price‑competitiveness. Together, their performance signals a broader shift in retail: the blending of traditional brick‑and‑mortar strengths with data‑driven, tech‑enabled revenue sources. The pending tariff‑refund lawsuits also raise important questions about corporate responsibility and consumer trust. If retailers choose to pass refunds directly to shoppers, it could set a precedent for how large import‑dependent firms handle unexpected windfalls, potentially reshaping pricing strategies and competitive dynamics across the sector.

Key Takeaways

• Walmart’s advertising revenue rose 37% to $6.4 billion, driving a 27% jump in operating income.
• Costco’s membership fee revenue reached $5.3 billion for FY2025 and grew 13.6% in Q2 FY2026.
• Costco’s U.S. membership renewal rate stands at 92.1%, providing a durable cash‑flow moat.
• Both retailers could claim portions of a $166 billion tariff‑refund pool after a Supreme Court ruling.
• Walmart is removing self‑checkout kiosks, citing theft concerns and a shift toward staffed lanes.

Pulse Analysis

Walmart’s aggressive push into retail media is more than a side project; it’s a strategic hedge against the volatility of commodity‑driven grocery margins. By converting foot traffic into ad impressions, Walmart can monetize the same customer base twice, a model that should sustain earnings even if discretionary spend softens. The 37% ad‑revenue surge suggests the platform is gaining traction with brands seeking alternatives to Amazon and Google, and the lower forward P/E relative to Costco indicates the market still undervalues this growth runway.

Costco, by contrast, leans on a subscription‑based model that insulates it from short‑term demand swings. The 13.6% membership‑fee growth in a single quarter underscores the power of price elasticity when consumers perceive membership as a value proposition. However, the company’s exposure to tariff‑refund litigation introduces a legal‑risk variable that could affect pricing strategies. If Costco channels refunds into price cuts, it could deepen its value narrative and further boost renewal rates, reinforcing its competitive moat.

The self‑checkout pullback at Walmart highlights a broader industry tension between automation and loss prevention. While technology can lower labor costs, the rise in shoplifting at unattended stations erodes those gains. Walmart’s decision to revert to staffed lanes, framed as a customer‑service improvement, is likely a pragmatic response to shrinkage rather than a pure service initiative. Retailers that balance efficiency with security will be better positioned to protect margins as shrinkage remains a persistent challenge.

Overall, the twin narratives of advertising‑driven growth and membership stability suggest that the biggest U.S. retailers are diversifying revenue streams to mitigate macro risk. Investors should monitor how each company allocates any tariff‑refund windfalls—whether toward price reductions, further ad investment, or shareholder returns—as those choices will signal the strategic priorities that could define the next competitive cycle.