Costco Continues to Dominate with Record-Breaking Growth in Q4 2026
Costco Wholesale Corporation has once again demonstrated its exceptional growth trajectory, delivering a stellar performance in the fourth quarter of fiscal year 2026. According to CEO Ron Vachris, the company's top-line sales growth exceeded 10%, with market share expanding as a result of deepening member loyalty and capturing a larger share of wallet.
The secret to Costco's success lies in its agile item-driven model, which enables buyers to stay ahead of member trends and adjust the assortment to offer high-quality products at competitive prices. This approach has paid off across various departments, including meat, bakery, major electronics, and health and beauty aids. Notably, the gas business has had a record year, driven by members seeking value and Costco's top-tier gasoline in the face of rising prices.
In fiscal year 2026, the penetration of U.S. member households that purchase gas reached an all-time high, with Costco estimating it saved its members over $3.2 billion versus the average price at the pump in markets where they operate. The company also expanded 26 existing U.S. gas stations during this year to increase throughput and improve the overall member experience.
Pharmacy sales grew nearly 20% as Costco continues to expand its digital capabilities, increasing member value and convenience through programs such as GLP-1 and fertility programs, as well as digital options like RX mobile pay ahead and pickup lockers. Many U.S. buildings now achieve RX pay-ahead penetrations of more than one-third of prescriptions, saving both members and employees valuable time.
The company's warehouse count has reached 939 worldwide, with a plan to open another 33 warehouses in fiscal year 2027, including new markets such as Buffalo, N.Y., and Lawrence, Kansas. This expansion is expected to drive growth through the opening of 30 net new warehouses per year, while also increasing return on investment.
Costco's CEO Ron Vachris emphasized that the company continues to see significant opportunities for new warehouse growth, including international markets in Asia, Australia, and other regions, with a strong pipeline of new warehouses planned for fiscal year 2028. This expansion strategy is expected to drive further growth and increase market share.
With its unique business model and commitment to delivering value to members, Costco has cemented its position as a leader in the retail industry. The company's focus on digital capabilities, expanding ancillary businesses, and strategic warehouse growth positions it well for continued success in fiscal year 2027 and beyond.
