Facebook founder Mark Zuckerberg has seen his net worth increase by $32 billion thanks to an increase in Facebook stock. In other recent Zuckerberg news, he reportedly used a secret meeting with President Donald Trump to warn him about TikTok.  Sources are reporting that he told Trump that Chinese tech firms pose a risk to the U.S.’s technological dominance. Mark Zuckerberg has a net worth of $111 billion. Quicken’s Dan Gilbert has seen his net worth increase by $36 billion thanks to a 37% climb in shares of his Rocket Companies recently. Gilbert founded Rocket Companies (then called Rock Financial) in 1985. Dan Gilbert has a net worth of $43.5 billion. Elon Musk has seen his net worth increase by $88 billion and claimed the title of the third richest person after a report from China reflecting the biggest interest in Tesla cars sent shares soaring. In just one week, Tesla stock surged more than 24%. Elon Musk has a net worth of $115 billion.