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Costco Gas Surge Boosts Traffic, Cuts Margin, Stock Slides

5/31/2026

23 5 Full Breakdown

Summary

Story summary

Costco saw gas demand surge as U.S. gasoline prices rose above $4 per gallon and above $6 on the West Coast.
About half of members who filled up entered the warehouse, raising foot traffic by 5%.
Gas sales, 10% of revenue, cut gross margin by two-tenths of a percentage point last quarter.
The stock fell nearly 4% on Friday after the earnings call, reflecting analyst skepticism.

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Story summary

Costco saw gas demand surge as U.S. gasoline prices rose above $4 per gallon and above $6 on the West Coast.
About half of members who filled up entered the warehouse, raising foot traffic by 5%.
Gas sales, 10% of revenue, cut gross margin by two-tenths of a percentage point last quarter.
The stock fell nearly 4% on Friday after the earnings call, reflecting analyst skepticism.