UPS CEO Carol Tome said on a call with investors that Amazon is UPS’ largest customer, but it is not the company’s most profitable customer.

United Parcel Service forecast on Thursday downbeat 2025 revenue as it accelerates a plan to slash millions of deliveries for its largest customer, Amazon.com, a surprise move that sent shares tumbling as much as 18%.

United Parcel Service (UPS) shares plunged 14% on Thursday after the company announced plans to reduce its business with Amazon by more than 50% by June 2026.

Shares of United Parcel Service (UPS) dropped 15% on Thursday, marking its worst day ever, after the company announced a significant reduction in its business with Amazon (AMZN), its largest customer.

In the fourth quarter, UPS brought in $25.3 billion, a 1.5% rise over last year. Operating profit increased 11.2% to $3.1 billion; adjusted profits per share came in at $2.75, above consensus projections of $2.53. From operations, the corporation brought in $10.1 billion in cash; via buybacks and dividends, it returned $5.9 billion to investors.

Today's bear gap has UPS falling to more than four-year lows and its largest single-day percentage drop in history. The equity is on the short sell restricted (SSR) list amid the volatility, and sports a 30% year-over-year deficit.

UPS cutting Amazon deliveries in half, expects $89B in 2025. Stock down 13% as company reorganizes due to slow sales.

UPS is cutting its business with Amazon in half by the middle of next year due to profitability concerns, CEO Carol Tomé said. Shares plunged.