Why did OpenAI plan to cut Microsoft revenue share? How will US-China trade talks impact markets? What caused WeightWatchers to file for bankruptcy? Why did DoorDash acquire Deliveroo and SevenRooms? How are tariffs affecting US automakers like Rivian? What is behind BMW's revenue drop this quarter? Why is Nvidia worried about losing access to China? How will UK-India trade deal affect imports and exports? What led to Newark Airport's recent flight disruptions?