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Volume: 3.21M
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Costco (COST) Market Capitalization Overview

Market Cap: $403.94B as of Oct 31, 2025

$403.94B
Past Month-$2.64B (0.65%)
As of Oct 31, 2025, Costco (COST) has a market capitalization of $403.94B. Over the past 30 days, its market cap has decreased by -2.29%, while in the last 12 months, it has decreased by -0.69%.

Market capitalization represents the total value of Costco as perceived by the stock market. It is calculated by multiplying the current stock price by the total number of outstanding shares.

Costco (COST) Market Cap Formula = Stock Price * Shares Outstanding

The market cap of Costco (COST) helps investors assess the company's size and compare it with competitors for better investment decisions.

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Costco (COST) Market Cap History

DateMarket CapChange
Oct 1, 2025$406.82B-2.29%
Sep 2, 2025$416.35B-1.44%
Aug 1, 2025$422.43B-3.39%
Jul 1, 2025$437.26B-6.75%
Jun 2, 2025$468.91B+5.79%
May 1, 2025$443.26B+4.68%
Apr 1, 2025$423.46B-8.88%
Mar 3, 2025$464.70B+4.08%
Feb 3, 2025$446.49B+10.55%
Jan 2, 2025$403.87B-6.51%

Costco (COST) End of Year Market Cap History

DateMarket CapChange
2025$403.94B-0.69%
2024$406.74B+38.87%
2023$292.90B+48.26%
2022$197.56B-19.74%
2021$246.14B+50.83%
2020$163.19B—

FAQs About Costco (COST) Market Cap

As of Oct 31, 2025, the market capitalization of Costco (COST) is $403.94B. Market cap represents the total value of a company’s outstanding shares and is a key indicator of its size in the stock market.

In the last 30 days, Costco’s market capitalization has decreased by -0.6500%, changing from $406.57B to $403.94B as of Oct 31, 2025.

In the last 3 months, Costco’s market capitalization has increased by —, changing from – to – as of –.

In the year 2024, Costco’s market capitalization increased from $292.90B in January to $406.74B in December, reflecting a 38.87% change.

In the past five years, Costco (COST) has had a compound annual growth rate (CAGR) of 20.04% in market capitalization. This means its market cap has grown at an average rate of 20.04% per year.

Costco (COST)

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