On Friday morning, Elon Musk became the first trillionaire in recorded human history. SpaceX began trading on the Nasdaq, opened 11 percent above its suggested IPO price, and Forbes estimated its net worth had crossed $1.1 trillion before noon Eastern. No person had ever done this before. Not even close. SpaceX priced its IPO at $135 per share on Thursday night, locking in a valuation of roughly $1.77 trillion before a single share changed hands.