Costco Wholesale (COST) Market Cap 1986–2026

As of October 29, 2026, Costco Wholesale had a market cap of $441.53 billion, which increased by 1.36% compared to the previous trading day. Market capitalization, often referred to as market cap, represents the total value of a company's outstanding shares on the stock market and is a common measure of its overall size and valuation.

Data updated: Oct 29, 2026, 4:00 PM ET
Costco Wholesale logo

Costco Wholesale Corp. (COST)

🌍 United States 📈 NASDAQ 🏭 Consumer Defensive 🏢 Consumer Staples Distribution & Retail
Latest Market Cap
$441.53B ▲ 1.36%
Start of 2026
$382.77B ▲ 15.35%
1 Year Ago
$407.8B ▲ 8.27%
All-Time High
$485.5B ▼ 9.06%


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Note: Each point on the chart represents the market capitalization at the end of the trading day.
Source: Data compiled from EDGAR filings, Bloomberg and Yahoo Finance.

📈 Costco Wholesale Market Cap History by Year and Month

Costco Wholesale Market Cap History by Year and Month
Year / MonthMarket Cap% Change
2026$441.53B▲ 15.35%
$441.53B▲ 9.42%
$403.52B▼ 3.61%
$418.63B▼ 0.84%
$422.18B▲ 1.76%
$414.89B▼ 2.18%
$424.14B▼ 5.77%
$450.1B▲ 1.82%
$442.07B▼ 1.47%
$448.66B▲ 7.50%
$417.35B▲ 9.03%
2025$382.77B▼ 5.89%
2024$406.732B▲ 38.87%
2023$292.897B▲ 44.60%
2022$202.563B▼ 19.53%
All market cap values reflect closing prices for the period shown.

📊 Costco Wholesale Market Cap and Other Industry Peers

Below are selected companies from the Consumer Defensive sector / subsector:

  1. $962.97B
  2. $441.53B
  3. $399.31B
  4. $372.21B
  5. $324.98B
  6. $182.49B
  7. $128.15B
  8. $90.8B
  9. $80.07B
  10. $74.26B
  11. $68.97B
  12. $49.17B
  13. $48.04B
  14. $39.49B
  15. $39.37B
  16. $39.29B
  17. $28.7B
  18. $25.06B
  19. $24.78B
  20. $22.24B


Data reflect the most recent market capitalization values available.

Note: Market capitalization figures are based on available sources and may differ slightly from actual values, particularly for historical data.