Key stat: Amazon received 236.9 million unique US visitors in June 2024, according to Comscore. It far exceeded Walmart in second with 137.2 million unique visitors.

Beyond the chart:

• Amazon also leads in US retail ecommerce sales, claiming 40.9% of market share this year, per our July 2024 forecast.
• The top three US digital retailers by unique visitors also have sizable retail media businesses, although at different scales: This year, Amazon will account for 77.0% of US retail media ad revenue, Walmart for 6.8%, and eBay for 1.2%, according to our March 2024 forecast.

Use this chart: Digital advertisers can use this chart to guide retail media investments, while product distributors can determine their wholesale strategy.

Related EMARKETER reports:

• The US Online Marketplace Shopper (Subscription required)
• US Ecommerce Forecast 2024 (Subscription required)

Note: Data was provided to EMARKETER by Comscore.