Amazon's Prime Day 2025 is off to a rocky start, at least by one account. Momentum Commerce, which manages online sales for 50 brands in a variety of product categories and price points, said its Amazon (AMZN) sales plunged 41% on the opening day,

Walmart: The world’s largest retailer is also getting in on the action with its Walmart Deals, running from July 8-13. The promotion offers discounts of up to 50% off on certain items. Walmart+ members are able to shop the sales starting at 7 p.m. on July 7.

Warehouse workers and union representatives said Prime Day meant extra hours in sometimes sweltering temperatures and a heightened risk of injuries.

Amazon Prime Day 2025 sales dropped 41% on the first day compared to 2024, according to Momentum Commerce. Amazon disputes these figures, citing in

The summer sales calendar now revolves around Amazon's anchor, with most major U.S. retailers scheduling competing events within days of Prime Day's expanded four-day window.

July has historically been a slower month for retailers, but families have begun school shopping earlier in recent years, analysts said.

It’s Amazon’s first major Prime sales event since President Trump unveiled hefty tariffs on many nations in April.