By Kavita Mistry 
Musk, 54, last bought Tesla stock in the open market in February 2020, according to data compiled by Bloomberg. He offloaded more than $20 billion of the company’s shares in 2022, the year he acquired Twitter.
The purchase amounts to a show of confidence in Tesla’s prospects after a challenging first half of the year in which vehicle deliveries slumped 13% worldwide. While Musk has talked up Tesla’s pursuit of robotaxis and humanoid robots, he’s also cautioned that the company could be in for “a few rough quarters” after the US phases out electric-car purchase incentives at the end of this month.
Musk is the world’s richest person with a net worth of about $419 billion, according to the Bloomberg Billionaires Index.