SpaceX began trading at $150 per share $9 above the roughly $141-per-share threshold that would push Musk's net worth over the trillion-dollar mark.
SpaceX's stock recently surged 28% to around $173, solidifying Musk's status as a trillionaire.
At SpaceX's IPO price of $135 per share, Musk's stake in the company was worth $688 billion. That brought his total net worth to $971 billion going into Friday's trading, according to Bloomberg.
Shares in Musk's other companies electric carmaker Tesla, brain-chip company Neuralink, and tunneling business The Boring Company made up the bulk of the rest of his net worth.
All things equal, Musk's SpaceX stake had to reach $717 billion for him to become the first-ever trillionaire. To get to that point, SpaceX needed to hit a share price of $140.71.
