SpaceX IPO made Elon Musk the world's first trillionaire and generated massive gains for other long-term investors. The second-biggest individual beneficiary is Musk's longtime associate Antonio Gracias, whose stake through Valor is worth over $75 billion. Other major winners include Google ($132 billion), PayPal Co-founder Luke Nosek ($5 billion) and SpaceX President Gwynne Shotwell ($2 billion).