Today's biggest winners and losers in the stock market.
On this episode of Stock Movers:

- Microsoft (MSFT) and OpenAI have agreed to drop the software giant’s exclusive right to sell the startup’s AI models, opening the door for the ChatGPT maker to pursue deals with cloud-computing rivals like Amazon.com Inc.

- United Airlines (UAL) Chief Executive Officer Scott Kirby confirmed he approached American Airlines Group Inc. and that talks have ended, laying out the virtues of a merger that he said could have strengthened corporate America and won approval from regulators.

- Verizon Communications (VZ) surprised analysts when it reported a gain of mobile subscribers, an early signal that new Chief Executive Officer Dan Schulman’s strategy for recapturing market share is already paying off.