Tesla CEO Elon Musk on Monday disclosed the purchase of about $1 billion in shares of the electric-vehicle maker in a show of confidence about the company's future. A regulatory filing disclosed that Musk bought 2.57 million shares of Tesla stock on Friday at a price between$372.37 and $396.54 per share.Musk's purchase marks the first time since early 2020 that he bought Tesla stock on the open market and comes as the company is transitioning to emphasize artificial intelligence (AI), robotaxis and robotic ...