Leading US Retailers by Market Capitalization

Market capitalization highlights investor valuation of top US retailers, with Amazon, Walmart, and Costco leading the sector as of August 2026.

The top 3

Top 3 Retailers by Market Cap: Amazon ($2.83 trillion), Walmart ($917.32 billion), and Costco ($426.23 billion) are the top three US retailers by market capitalization as of August 2026, reflecting significant investor confidence.
Amazon's Trillion-Dollar Retail Valuation: Amazon holds the highest market capitalization among retailers at approximately $2.83 trillion, showcasing its dominant position as a hybrid tech and retail giant.
Traditional Retailers in the Billions: Walmart and Costco follow with market capitalizations of approximately $917 billion and $426 billion respectively, affirming the substantial value of traditional retail models in the US market.