Costco Wholesale
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Costco Wholesale (COST) investor relations material

Costco Wholesale Monthly Sales Update May 2026 summary

Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
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Monthly Sales Update May 2026 summary3 Jun, 2026

Financial performance highlights

  • Net sales for May reached $24.01 billion, up 14.5% from $20.97 billion last year.

  • Total company comparable sales rose 12.5%, with digitally enabled sales up 21.1%.

  • Excluding gasoline and FX, total comparable sales increased 7.5% for May.

  • Comp traffic grew 3.9% worldwide and 3.7% in the U.S.

  • Average worldwide transaction rose 8.3%, or 4.0% excluding gas inflation and FX.

Regional and category performance

  • U.S. regions with strongest comparable sales were Midwest, Southeast, and Northeast.

  • Comparable sales for May rose 13.7% in the U.S., 9.2% in Canada, and 9.7% internationally.

  • Internationally, Taiwan, Japan, and the U.K. led performance.

  • Foods and sundries grew mid-single digits; fresh foods up high single digits.

  • Ancillary business sales surged high 30s, with gas up high 40s due to price and volume growth.

Operational highlights

  • Operates 931 warehouses globally, with 639 in the U.S. and Puerto Rico.

  • E-commerce platforms are active in nine countries, including the U.S., Canada, and China.

Gas and FX impact on May comparable sales
Digitally-Enabled vs total company sales growth
Other International deceleration ex-gas/FX
Quantify gas price inflation impact on total comps
Detail cannibalization impact on total company
Identify top performing non-foods departments
Impact of gas price inflation on total comp sales
Quantify cannibalization impact on total company
Identify top performing non-food departments
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Monthly Sales Update June 20268 Jul, 2026
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