Costco's U.S. and Global Core comparable sales growth of 9% in September demonstrates the company's capacity to attract members with its exceptional value, diverse product offerings, and convenience across multiple channels. Even after accounting for an approximate 200 basis point increase in U.S. sales attributed to Hurricane Helene and port strikes, the core growth of over 7% continues to outpace the broader U.S. retail sales figures significantly.

Costco's September adjusted U.S. comparable sales showed a 9.3% increase, attributed in part to an approximate 2 percentage point rise from unusual consumer behavior due to port strikes and Hurricane Helene. These figures align with positive observations during store evaluations. Notably, non-food categories have continued to perform well, particularly jewelry and gift cards, increasing in the low double-digit range. It is anticipated that Costco's robust top-line growth will continue throughout the year, supported by their exceptional merchandising capabilities and distinct value proposition. Additionally, it's suggested that Costco may experience a short-term increase in memberships as a result of more rigorous checks at the point of membership card verification.

Costco's total and U.S. core September comparable sales growth was reported at 8.9% and 7.3%, which include benefits from circumstances such as Hurricane Helene and port strikes, surpassing the consensus predictions of 6.2% and 5.9%. The company's traffic growth was robust, increasing by 7.2% globally and 7.6% in the U.S. This suggests that Costco's value proposition is effectively attracting customers, promoting frequent shopping visits, and gaining market share.