As Walmart executives take the stage at two major investor conferences this week, the market's focus will be less on new sales forecasts and more on whether the retail giant's digital transformation is translating into better economics. The company's e-commerce sales surged 23% globally in the latest quarter, but the real question is whether that growth is improving profitability or merely shifting purchases from stores to delivery networks.
Digital Growth vs. Store Slowdown
Walmart U.S. comparable sales rose just 2.6% in the fiscal second quarter, while e-commerce contributed approximately 4.9 percentage points to that figure. That implies a drag of roughly 2.3 percentage points from store operations, a gap that underscores the importance of the company's online, advertising, and membership businesses. These segments carry higher margins than traditional grocery sales, making their performance critical to Walmart's long-term financial health.
On September 15, Walmart U.S. President and CEO Dave Guggina will speak at the Goldman Sachs Global Retailing Conference, followed by Manish Joneja, Walmart U.S. marketplace and fulfillment-services executive, at the Piper Sandler Growth Frontiers Conference on September 16. Investors will be listening for details on how the company plans to improve unit economics in its digital operations.
Marketplace and Advertising Momentum
Walmart's marketplace sales grew 52% in the quarter, with nearly half of marketplace activity flowing through its fulfillment services. Advertising revenue rose 38%, and global membership-fee income increased 17%. These high-margin businesses are key to offsetting the costs of e-commerce expansion. Joneja's session is expected to provide insights into how fulfillment penetration and delivery density are lowering the cost per incremental online order.
Walmart U.S. e-commerce growth of 24% in the quarter was impressive, but the more important metric is whether the company can convert that growth into cash. The company's operating income rose 28.8% in the quarter, but that figure was inflated by tariff refunds.
Tariff Refunds and Margin Quality
Walmart received nearly $2.9 billion in tariff refunds during the quarter, which added about 7.5 percentage points to adjusted constant-currency operating income growth. Excluding that benefit, underlying operating income growth was approximately 9.9%, still at the top of the company's 7% to 10% target range. However, the company used part of the windfall for more than 11,000 price rollbacks, a move that supports customer loyalty but may not be repeatable.
Cash flow remains a concern. Operating cash flow for the first half rose $1.4 billion to $19.7 billion, but free cash flow fell $1.4 billion to $5.5 billion due to increased capital spending. Inventory levels were also 6.7% higher year-over-year. These figures suggest that while Walmart's digital investments are paying off in growth, they are yet to fully translate into cash generation.
What Investors Should Watch
Management could provide clarity on several fronts: cost per delivery, orders per route, marketplace seller adoption of fulfillment services, advertising revenue tied to marketplace volume, or the incremental margin of Walmart+ members. Even a few of these metrics would help investors assess whether the mix shift is genuinely improving the company's financial profile.
Walmart has raised its fiscal 2027 outlook to 4%–5% net sales growth and 7%–8.5% adjusted operating income growth, implying that earnings can outpace revenue even as tariff benefits fade. However, risks remain, including persistent consumer trade-down, pharmacy deflation, higher fuel costs, and heavier fulfillment investment. This week's conferences are not earnings events, but they may offer the operational detail needed to make the bull case more credible.
