Elon Musk on Monday became the first person ever worth $600 billion, Forbes said, on the heels of reports that his SpaceX startup was likely to go public at a valuation of $800 billion. Musk, who was the first to surpass $500 billion in net worth in October,

Elon Musk became the first person to be worth $600 billion on Monday, according to Forbes, making the gap between him becoming a trillionaire less than the gap between him and the next richest person, Google co-founder Larry Page.