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Costco Wholesale (COST) investor relations material
Costco Wholesale Monthly Sales Update September 2025 summary
Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
Sales performance overview
Net sales for September reached $26.58 billion, up 8% from $24.62 billion last year.
Comparable sales: US 5.1%, Canada 6.3%, other international 8.5%, total company 5.7%, digitally enabled 26.1%.
Excluding gasoline and FX: US 5%, Canada 9.3%, other international 7.5%, total company 6%, digitally enabled 26.3%.
Comp traffic increased 2.1% worldwide and 1.4% in the US.
Last year's sales were positively impacted by hurricane and port strike-related consumer activity.
Regional and category highlights
Strongest US regions: Northwest, Midwest, and Los Angeles.
Best international results: Korea, Australia, China, and Taiwan, with holiday shifts boosting sales in Korea, Taiwan, and China.
Food and sundries up mid single digits; top departments: candy, cooler, deli.
Fresh foods up mid to high single digits; best in meat and bakery.
Non-foods up high single digits; jewelry, majors, health and beauty performed best.
Operational and strategic updates
Digitally enabled comparable sales now include all sales initiated through digital devices, including travel.
Costco operates 914 warehouses globally, with 629 in the U.S. and Puerto Rico.
E-commerce sites are active in eight countries, including the U.S., Canada, and the U.K.
Ancillary business sales up mid single digits, led by pharmacy, hearing aid, and optical.
Gas sales up low single digits due to higher volume.
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Frequently asked questions
How a membership-only model revolutionized retail
Costco Wholesale Corporation is a multinational retail company that operates a chain of membership-only warehouse clubs. The company is headquartered in Issaquah, Washington, United States. Costco is mostly known for its ability to offer members high-quality products at low prices, selling items in bulk quantities, and the wide range of products available in their stores.
Economies of scale and the virtuous cycle
One of Costco's most significant competitive advantages is its ability to keep prices low while maintaining quality. The company's bulk purchasing strategy, direct relationships with manufacturers, and no-frills store design allow it to offer members high-quality products at lower prices than competitors. Additionally, Costco's membership model generates a steady revenue stream and fosters a loyal customer base.
Costco's economies of scale advantages are a critical factor that sets it apart from its competitors. Economies of scale refer to the cost advantages a business gains by producing or buying in large quantities. By buying goods in bulk quantities, Costco can negotiate better prices from suppliers and pass those savings on to customers. The company also benefits from lower per-unit transportation and storage costs, as larger quantities can be shipped and stored more efficiently.
Further reading: Investing Mastery with Nick Sleep: Nomad's Costco Investment
Because of its large scale, Costco can also invest in its own logistics infrastructure, including warehouses, trucks, and delivery systems, further reducing its costs. The company's distribution system is highly efficient, with warehouses strategically located to serve a large number of customers. Additionally, Costco's business model focuses on offering a limited number of products, reducing the complexity of its supply chain and allowing it to optimize its operations.
Overall, Costco's economies of scale advantages allow it to offer a unique value proposition to its members, combining low prices with high-quality products and a wide selection. The company's focus on simplicity and efficiency in its operations has been a key factor in its success, allowing it to maintain strong supplier relationships and deliver excellent value to customers. The economies of scale and the virtuous cycle have been major factors in making Costco one of the largest retailers in the world.
“If you raise the price on the effing hot dog, I will kill you”
Some outstanding business stories tied to Costco include the story behind Jim Sinegal's quote "If you raise the price on the hotdog, I will kill you", which has become a testament to Costco's commitment to offering members value and quality at an affordable price.
According to the story, during a meeting with Costco's food vendors, Sinegal noticed that the price of the hot dog and soda combo, which was priced at $1.50, had not changed in years. When the vendors suggested raising the price to keep up with inflation and rising costs, Sinegal reportedly responded with his now-famous quote.
Sinegal's response was not just about the hot dog, but about the principle of offering members unbeatable value. Costco's business model has always been based on providing members with high-quality products at low prices, and the hot dog and soda combo is a classic example of this approach. Despite rising costs and inflation, Costco has kept the price of the combo at $1.50 for over three decades, making it one of the most famous bargains in the retail industry.
Three listed peers to Costco are:
Walmart – One of the world's largest retailers, operating a chain of hypermarkets, discount department stores, and grocery stores.
Target – Target is a discount retailer that sells a wide range of products, including clothing, electronics, and home goods.
BJ's Wholesale Club – BJ's Wholesale Club is a membership-based warehouse club that operates on the East Coast of the United States, offering bulk products at low prices to members.
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