Costco Reports Strong May Sales Growth Across All Global Regions

Costco Wholesale Corp. (COST) reported robust financial performance for May 2026, with net sales rising 14.5% to $24.01 billion compared to the same period last year. The retailer also saw a significant 12.5% increase in comparable sales, reflecting sustained consumer demand across its global warehouse network. This growth was widespread, with the United States leading the charge at 13.7%, followed by solid performances in Canada and international markets.

Even when stripping away the volatility of gasoline prices and foreign exchange fluctuations, Costco maintained impressive momentum. Adjusted comparable sales grew by 8.0% globally, with the U.S. market again outperforming other regions at 8.7%. For the first 39 weeks of the fiscal year, the company has generated $221.19 billion in net sales, marking a 10% year-over-year increase and signaling consistent operational health.

These figures underscore Costco's resilience in a complex retail environment. By maintaining strong comparable sales growth across all geographic segments, the company continues to demonstrate the effectiveness of its membership-based business model. Investors reacted positively to the news, with shares ticking upward in overnight trading, reflecting confidence in the retailer's ability to drive volume and manage its 931-warehouse footprint effectively despite broader economic pressures.