Tesla shares surged more than 5% after Elon Musk confirming Tesla AI Day will be on August 19.Tesla CEO Elon Musk confirmed via tweet on Thursday that the company is holding an AI Day on Aug. 19.While the company did not provide details of the artificial intelligence event, Musk said in a June 21 tweet that the event "will go over progress with Tesla AI software & hardware, both training & inference" and that its purpose is recruiting.The focus of the AI event is likely to be around Tesla's self