United Parcel Service on Thursday forecast downbeat 2025 revenue as it cuts back deliveries for its largest customer, Amazon.com , and grapples with stubbornly soft demand for lucrative overnight service and commercial shipments.

(Reuters) - -United Parcel Service on Thursday forecast 2025 revenue below Wall Street estimates, as gains from cost cuts were offset by customers opting for cheaper, slower ground-based deliveries from more profitable air-based services. Shares of the world's largest package delivery fell more than 5% early in the trading session.

UPS has shifted away from less profitable large contracts in recent years, while Amazon has built up its own in-house logistics empire.