Qualcomm’s stock rose Monday amid reports of a possible partnership between the San Diego chipmaker and OpenAI to develop smartphone processors.TF International Securities analyst Ming-Chi Kuo said in a post Sunday on social-media site X that the pair, along with Taiwanese semiconductor company MediaTek and Chinese manufacturer Luxshare, have plans to develop a new AI smartphone. None of the companies commented on Kuo’s post. But if confirmed, the partnership would give a boost to Qualcomm’s revenue, Kuo said. Mass production of the device is expected in 2028, Kuo said. Instead of relying on a “pile of apps,” these new smartphones...