UPS announced a seismic shift in the relationship with its largest customer, Amazon, prompting a sharp stock price drop Thursday morning. The Georgia-based logistics company will cut the volume it moves for the retailer by more than 50% by the second half 2026,

United Parcel Service Inc. shares plunged after the company projected annual revenue well below expectations, telling investors that a long-awaited rebound in demand for its parcel services won’t arrive this year and prompting it to slash its low-margin business with Amazon.