SpaceX goes public in historic Wall Street debut, making Elon Musk world's first trillionaire. SpaceX has officially begun trading after its executives rang the opening bell at Nasdaq, marking a historic IPO valued at $1.77 trillion. The company raised a record $75 billion in its share sale, pushing Elon Musk’s net worth to $982.6 billion and putting him on the brink of becoming the world’s first trillionaire if shares rise further.