Costco Wholesale Corp Market Cap

Data as of August 04, 2026

How It's Calculated

What This Means

Costco Wholesale Corp has a market capitalization of $422.14B, classifying it as Mega Cap — one of the largest companies in the world. Market cap represents the total value of all outstanding shares and is a key indicator of a company's size.

About Costco Wholesale Corp

Costco Wholesale Corp (COST) operates in the Retail sector, specifically in Retail. With a market capitalization of about $422.14B, it ranks as a mega-cap stock — one of the largest publicly traded companies.

Shares recently traded near $954.08, within a 52-week range of $844.06 to $1096.50 (-13.0% from the high, +13.0% from the low). Beta of 0.87 is broadly in line with typical market sensitivity.

Trailing profit margin is about 3.0%, signaling modest profitability that investors should weigh against growth plans.

Understanding This Metric

Market capitalization sums the market value of all outstanding shares. It helps classify Costco Wholesale Corp by size — mega-cap, large-cap, and mid-cap stocks tend to have different liquidity, volatility, and index inclusion profiles. Size alone does not determine quality, but it frames risk and how widely the stock is held.

Sector Comparison

Among Retail names on our S&P 100 coverage, Costco Wholesale Corp's market cap of $422.14B can be compared with peers such as AMZN ($2.92T), WMT ($884.14B), LOW ($116.52B). Sector context helps interpretation, but each company's growth profile and balance sheet differ — use multiple metrics before drawing conclusions. View all Retail stocks.

Key Takeaways

• COST is grouped in the Retail sector for peer comparisons.
• Recent beta of 0.87 suggests lower-than-market price sensitivity.
• Trailing profit margin of 3.0% provides context for how much earnings support the headline multiple.

Related Tools & Guides

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