| COST Market Cap History Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below is a table of the COST market cap history going back to 3/5/2010:
Also see: COST Shares Outstanding History and COST YTD Return |
COST Market Cap History — Costco Wholesale Capitalization Over Time
As of 5/27/2026 Costco Wholesale has a market cap of 445.12 billion. Investors often follow the COST market cap history to compare the size of the company over time.
This page shows COST market capitalization trends over time, with 66 market cap datapoints presented, dating back to 3/5/2010.
| COST Market Cap History Chart | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
COST Historical Market Cap: +18.91% CAGR 
Mouse over chart for data details
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| COST Stock Price Chart |
| About Costco Wholesale Corp |
| Costco Wholesale Corporation operates membership warehouses and e-commerce websites. Co. operates 861 warehouses, including 591 in the U.S. and Puerto Rico, 107 in Canada, 40 in Mexico, 33 in Japan, 29 in the United Kingdom, 18 in Korea, 15 in Australia, 14 in Taiwan, five in China, four in Spain, two in France, and one each in Iceland, New Zealand and Sweden. It also operates e-commerce sites in the U.S., Canada, the United Kingdom, Mexico, Korea, Taiwan, Japan and Australia. It provides a wide selection of merchandise, convenience of specialty departments and exclusive member services. We show 66 historical shares outstanding datapoints in our COST shares outstanding history coverage, used to compute COST market cap on those dates. Understanding the changing numbers of shares outstanding, the changing share price, and the resulting changing COST market cap history over the course of time is important for investors interested in comparing COST's market cap history versus its peers. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies, and then calculating their respective market caps. Comparing the share price of COST versus a peer is one thing; comparing COST market cap versus a peer is a completely different story. Furthermore, via fluctuation both in per-share price and in the number of shares outstanding (via issuance of new shares over time, the repurchase of existing shares), the market cap for a company like COST can fluctuate over the course of history. With this page we aim to empower investors researching COST by allowing them to research the COST market cap history. |
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| Video: The Importance of Market Cap | |
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Video: The Importance of Market Cap
| COST Share Performance |
| Market Cap Peers |
| Costco Wholesale (COST) is categorized under the Services sector; to help you further research historical market cap numbers, below are some other companies in the same sector:
CPHC Market Cap History CPLA Market Cap History CPNG Market Cap History CRMT Market Cap History CRTD Market Cap History CSSE Market Cap History CSV Market Cap History CTCM Market Cap History CTNT Market Cap History CTRN Market Cap History More Services companies » |
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