# United Parcel Service (UPS) stock tumbled on May 4 after rival Amazon (AMZN) announced the launch of Amazon Supply Chain Services.

*business · news · 2026-05-05 · Barchart*

## Key points

- Amazon Supply Chain Services opens Amazon's logistics network to all businesses, not just marketplace sellers.
- Major companies like Procter & Gamble and 3M are already early adopters of Amazon's new service.
- Amazon's logistics service targets high-margin business-to-business shipping, a core UPS profit segment.
- ASCS integrates AI-powered forecasting and inventory tools, expanding Amazon's offer beyond delivery price.

**Companies:** Amazon, United Parcel Service, FedEx, Procter & Gamble, 3M, Lands' End, American Eagle Outfitters
**Countries:** United States

[Read the full story on Barchart](https://www.barchart.com/story/news/1713575/what-to-know-as-amazon-announcement-sends-ups-stock-down)

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