SpaceX owner and Tesla Chief Executive Elon Musk bought $1 billion in Tesla stock through a trust, his first open-market purchase since 2020. (Britta Pedersen / Associated Press) In a move that boosted Tesla's stock in midday trading on Monday, it was revealed that Chief Executive Elon Musk purchased approximately$1 billion worth of the company's shares. The vote of confidence signals that Musk plans to stick around after a recent raise and is optimistic about Tesla's robotaxi venture. As EV sales slump ...