Walmart Overhauls Inventory Data with Enterprise Inventory Transition, Suppliers Brace for Metric Restatement

Walmart has initiated a sweeping update to its inventory reporting infrastructure, transitioning its Store Inventory dataset to a more accurate Enterprise Inventory (EI) system as of September 23, 2026. The upgrade is already prompting restatements of historical inventory metrics, affecting data stretching back to June 2025.

Shift to Enterprise Inventory and Its Implications

On September 23, Walmart migrated its Store Inventory data source from the legacy system to its new Enterprise Inventory platform. The EI system brings enhanced alignment with current fulfillment and supply chain processes by eliminating phantom inventory records, resolving unit-of-measure discrepancies, and removing stale data. The update also affects key metrics like instock percentages, store counts, item counts, and velocity measurements. The restatement of historical data—from June 1, 2025, to September 22, 2026—began on September 24 and is expected to continue daily (excluding Fridays and Saturdays) until about October 8, 2026.

Why This Matters for Suppliers and Data Users

For Walmart’s suppliers, analysts, and internal planners, restated inventory data may shift visibility into stock levels, availability calculations, and performance forecasts. As reported in industry outlets, the divergence between legacy and EI-based metrics is anticipated, with adjustments tied to data quality and aggregation logic differences.

Market Implications and Stock Context

Walmart’s stock price, currently at $107.98 as of September 25, 2026, reflects investors’ broader assessments of the company’s fundamentals rather than immediate swings tied to this data transition. While the inventory data overhaul enhances internal accuracy and supplier tools, there’s no direct evidence tying it to any short-term market reaction.

Strategic Context: Scintilla Expands to Close the Supply Loop

This update complements Walmart’s broader data strategy, notably enhancements to its Scintilla analytics platform. As announced at the Inspire conference last week, Walmart plans to add marketplace data, customizable dashboards, alerting, and expanded AI-guided recommendations next year. The expanded Marty AI assistant will bridge analytics and operational decisioning, enabling suppliers to detect out-of-stock risks, trigger replenishments, and activate advertising—all within a unified interface.

Looking Ahead: Monitoring Metrics and Adoption Impacts

Over the coming weeks, stakeholders should monitor daily updates for narrowing fluctuations in inventory-related metrics as the restatement completes around October 8. Suppliers may need to adjust forecasting, replenishment schedules, and reporting systems to align with revised data patterns. Meanwhile, the evolving Scintilla ecosystem offers new opportunities to leverage first-party data across supply chain, advertising, and commerce workflows.