Mark Zuckerberg and Elon Musk.Getty Images Elon Musk's net worth is more than double Mark Zuckerberg's, per the Bloomberg Billionaires Index. Musk has become $106 billion richer this year and is now worth $243 billion. Zuckerberg is worth $106 billion after adding $60 billion to his total this year as Meta stock rose. Elon Musk seems to be having a bad week.As tens of millions sign up for Meta's Threads, its new Twitter rival, Mark Zuckerberg appeared to rub salt in the wound by tweeting a Spider-Man meme to mark the launch of the new platform on Wednesday.