Market Movers: Nvidia and Apple Drop, Walmart and iRobot Rise

Nvidia's stock fell after informing Chinese customers of a delay in launching its new AI chip, while Walmart's stock rose as the retailer added parcel stations to its stores for quick deliveries during the shopping season. Apple's stock declined after a research firm projected a decline in unit sales during China's Singles Day event. Novo Nordisk's stock rose as the drug maker agreed to invest over $2 billion in a plant in France. General Motors' stock rose as its robotaxi unit Cruise planned to relaunch in one city. Vista Outdoor's stock rose after receiving a $1.7 billion offer from Czech gunmaker Colt CZ Group.