TotalMarketCap

Market cap

$419.608 B

$946.92 -0.10%

Close of 12 Oct 2026

As of 12 Oct 2026, Costco Wholesale (COST) has a market capitalization of $419.6B. Market cap measures the value of outstanding equity at market prices; company totals combine applicable share classes. Prices and market caps come from Nasdaq, with financial fundamentals from SEC filings. See sources and calculation details.

Revenue

$275.2B

#11 by revenue

Earnings

$8.10B

#58 by earnings

Shares outstanding

443,129,349

Latest filing cover page

P/E ratio

51.8

Cap ÷ net income

Department/Specialty Retail Stores, ranked by market cap

All 13 →
  1. #1WalmartWMT$883.4B
  2. #2Costco WholesaleCOST$419.6B
  3. #3TargetTGT$69.8B
  4. #4Dollar GeneralDG$28.1B
  5. #5Dollar TreeDLTR$22.3B

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Where these numbers come from

Share counts and financials for Costco Wholesale are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 13 Oct 2026. Read the methodology.