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Costco Q4 Sales Grew 13% As Gas Prices Lifted Revenue

10/12/2026

Costco Wholesale reported that gas price inflation lifted its fiscal Q4 2026 sales by approximately 3%. Management disclosed this figure during the earnings call held on September 24, 2026.

The retailer's comparable sales rose 9.4% for the quarter, a figure that dropped to 6.7% after excluding the effects of gas prices and currency fluctuations.

Gasoline sales themselves expanded significantly, with management citing a mid-30s percent increase in comparable gas sales driven by higher per-gallon prices and record volumes.

The current valuation of Costco shares reflects investor expectations for sustained growth. The stock trades at 45.6 times earnings, a multiple that exceeds the S&P 500 valuation.

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