Amazon Prime Day Boosts US Retail Sales to $7.9 Billion, Representing 9.9% YoY Growth

Adobe reports that US retailers drove $7.9 billion in online spending on Amazon Prime Day, representing a 9.9% YoY growth. This marks the single biggest e-commerce day. The sales tally is part of Adobe's initial one-day figures for the Amazon Prime Day event, which saw promotions happening broadly across U.S. retailers this week.

Adobe Analytics has reported that US retailers drove $7.9 billion in online spending on Amazon Prime Day, marking a 9.9% year-over-year (YoY) growth. This figure represents the single biggest e-commerce day, as part of the initial one-day data for the Amazon Prime Day event, which saw promotions across U.S. retailers this week.

The extended four-day Prime Day event, which began on July 8, 2025, and will continue until July 11, has seen a significant shift in consumer behavior. According to Momentum Commerce, sales on the first day were down 41% compared to the same day last year [1]. Despite this slow start, the company still projects overall growth of 9.1% from last year [1].

Adobe's report highlights the impact of generative AI on shopping behavior. The analytics firm expects a 3,200% increase in generative AI-based traffic during this year's Prime Day, up from last year's 1,300% increase during the holiday season [3]. Consumers are increasingly using AI tools to research products, find deals, and make purchases.

The extended Prime Day event is designed to capitalize on the back-to-school season, with Adobe predicting the largest spending increases in categories such as school supplies, electronics, and apparel [2]. Clothing is forecast to see the deepest discounts at 24%, up from 20% last year [2].

Despite the initial slowdown, the overall sales tally is expected to surpass last year's two-day event, driven by the extended time frame and the strategic use of AI tools by consumers.

References:
[1] https://www.forbes.com/sites/zacharyfolk/2025/07/09/amazons-day-1-prime-day-sales-dropped-41-report-finds/
[2] https://in.fashionnetwork.com/news/Amazon-prime-day-set-to-lift-us-online-sales-to-23-8-billion-adobe-estimates,1747134.html
[3] https://finance.yahoo.com/news/adobe-projects-3-200-increase-221114694.html