Costco Wholesale COST Market capitalization
Market capitalization at other companies
Other financials
Where this comes from
Computed from the period-end share price: $424.14B.
The official record: Costco Wholesale’s 10-Q, filed June 3, 2026, on SEC EDGAR. View the filing →
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Questions, answered.
- What is Costco Wholesale's market capitalization?
- Costco Wholesale (COST) reported market capitalization of $424.14B in Q1 2026.
- How has Costco Wholesale's market capitalization changed year-over-year?
- Costco Wholesale's market capitalization decreased by 6.1% year-over-year, from $451.58B to $424.14B.
- What is the long-term trend for Costco Wholesale's market capitalization?
- Over 4 years (2021 to 2025), Costco Wholesale's market capitalization has grown at a 26.5% compound annual growth rate (CAGR), from $690.22B to $1.77T.
- What does market capitalization mean?
- What the stock market says the company's equity is worth.
- How do you interpret market capitalization?
- A size and market-sentiment gauge, not a quality measure — interpret through valuation ratios (P/E, P/S) that relate it to fundamentals.
- How does market capitalization compare across companies?
- Comparable across companies as a size class; the input to every equity-price valuation multiple.