The landmark listing cemented Elon Musk's status as the first trillionaire ever and propelled SpaceX into the ranks of the world's most valuable companies. June 12 (Reuters) - SpaceX SPCX.O shares jumped 19% in their Nasdaq debut on Friday, sending the company’s value past $2 trillion to make it the sixth-biggest U.S. company by value and turning Elon Musk into the world’s first trillionaire. Investors jumped at the chance to get a piece of Musk’s sprawling empire spanning rockets, satellites