Market cap is the total market value to buy the whole company. It is equal to the share price times the number of Shares Outstanding (EOP). Costco Wholesale's share price for the quarter that ended in May. 2026 was $956.32. Costco Wholesale's Shares Outstanding (EOP) for the quarter that ended in May. 2026 was 443 Mil. Therefore, Costco Wholesale's market cap for the quarter that ended in May. 2026 was $424,108 Mil.
Costco Wholesale's quarterly market cap
increased
from Nov. 2025 ($405,560 Mil) to Feb. 2026 ($448,479 Mil) but then
declined
from Feb. 2026 ($448,479 Mil) to May. 2026 ($424,108 Mil).
Costco Wholesale's annual market cap
increased
from Aug. 2023 ($243,217 Mil) to Aug. 2024 ($395,437 Mil) and
increased
from Aug. 2024 ($395,437 Mil) to Aug. 2025 ($418,114 Mil).
Enterprise Value is the theoretical takeover price. It is more comprehensive than market capitalization (market cap), which only includes common equity. Enterprise Value is calculated as the market cap plus debt and minority interest and preferred shares, minus total cash and cash equivalents. Costco Wholesale's Enterprise Value for Today is $415,702 Mil.
Costco Wholesale (NAS:COST) Market Cap Explanation
Market cap is not the real price you pay for a company. If you buy the company and become its owner, you become the owner of the cash the company has, and you also assume the companys debt. The real price you pay is the Enterprise Value.
Warren Buffett uses the ratio of total market cap of all public traded companies over GDP to measure if the market is expensive. As of April 2012, the US total market cap is about $14.7 trillion, while the US GDP is about $15 trillion. The market was modestly overvalued.
Costco Wholesale Market Cap Related Terms
Costco Wholesale Market Cap Historical Data
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The historical data trend for Costco Wholesale's Market Cap can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Discount Stores subindustry, Costco Wholesale's Market Cap, along with its competitors' market caps and Market Cap data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Costco Wholesale Market Cap vs Retail - Defensive Industry
For the Retail - Defensive industry and Consumer Defensive sector, Costco Wholesale's Market Cap distribution charts can be found below:
* The bar in red indicates where Costco Wholesale's Market Cap falls into.
Market cap is the short version of market capitalization. It is the total market value to buy the whole company. It is equal to the share price times the number of shares outstanding.
Costco Wholesale's Market Cap for the fiscal year that ended in Aug. 2025 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Costco Wholesale (COST) has a Market Cap of $427,562 Mil as of Jun. 24, 2026. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Costco Wholesale and its competitors. According to the industry distribution chart, Costco Wholesale ranks #2 out of 317 companies in the Retail - Defensive industry, placing it in the top 0.59999999999999%.
Is Costco Wholesale's Market Cap too high?
Costco Wholesale's current Market Cap is $427,562 Mil. The Retail - Defensive industry median Market Cap is 146.10. Costco Wholesale's value of $427,562 Mil is 292560.3% above this industry median. Based on the distribution chart, Costco Wholesale ranks #2 out of 317 companies in the Retail - Defensive industry, which is in the top quartile — a strong position relative to peers. Overall, Costco Wholesale has a GF Score™ of 97/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Costco Wholesale's Market Cap compare to TGT and DG?
According to the Retail - Defensive industry distribution chart, Costco Wholesale ranks #2 out of 317 companies for Market Cap. This places Costco Wholesale in the top 1% of its industry — outperforming the majority of peers. The industry median Market Cap is 146.10. Costco Wholesale's value of $427,562 Mil is 292560.3% above this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Market Cap for a Retail - Defensive company?
The median Market Cap among Retail - Defensive companies is 146.10, based on 317 companies in the industry. Companies in the top quartile (top 25%) have a Market Cap significantly above this median, while those in the bottom quartile fall well below. However, Market Cap should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Costco Wholesale's current Market Cap of $427,562 Mil is 292560.3% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Market Cap mean?
A high Market Cap can signal that a stock is expensive relative to its fundamentals. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Costco Wholesale and its competitors. For the Retail - Defensive industry, the median Market Cap is 146.10 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Costco Wholesale's current Market Cap is $427,562 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Costco Wholesale stock overvalued right now?
Based on GuruFocus' analysis, Costco Wholesale (COST) is currently considered Fairly Valued. The stock's GF Value™ is $1,014.93, compared to a current price of $964.11 — trading 5% below its estimated fair value. The current Market Cap is $427,562 Mil and 292560.3% above the Retail - Defensive industry median of 146.10. Costco Wholesale's overall GF Score™ is 97/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Market Cap calculated?
Market Cap is calculated from a company's financial statements. For Costco Wholesale (COST), the current Market Cap is $427,562 Mil as of Jun. 24, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Costco Wholesale (COST) Overvalued in 2026?
Based on GuruFocus' analysis, Costco Wholesale stock appears to be undervalued.
The current stock price of $964.11 is trading 5% below its estimated GF Value™ of $1,014.93.
GuruFocus considers Costco Wholesale to be Fairly Valued.
Key valuation signals for COST:
Market Cap: $427,562 Mil
GF Value™: $1,014.93 vs. price of $964.11 (5% below fair value)
Industry Position: 292560.3% above the Retail - Defensive median (#2 of 317)
No single metric tells the full story. See the COST stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Founded in 1983, Costco Wholesale now operates a global chain of membership-based warehouse clubs, delivering high-quality goods and services at consistently low prices. As of its most recent fiscal year, Costco operated approximately 910 warehouses, serving more than 80 million members across its three geographic segments: Costco US (approximately 73% of total revenue), Costco Canada (13%), and Costco International (14%).Costco's core value proposition—quality products at unbeatable prices—has yielded consistently strong member renewal rates (93% in the US and Canada and nearly 90% internationally). About 55% of Costco's fiscal 2025 revenue came from its grocery offerings, and another 25% from general merchandise.
97GF Score
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