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SpaceX CEO Elon Musk has now suggested that reaching quadrillionaire status is “not impossible”, but he also said that such wealth would require factories on the Moon and Mars and a future economy measured in mass and energy rather than in dollars. Responding to a post shared on social media platform X (formerly known as Twitter), noting that he would need nearly $999 trillion more to reach quadrillionaire status, Musk wrote: “Not impossible, but definitely requires factories on the Moon and Mars to achieve. By then, I don’t think dollars will be used as currency. Just mass and energy.” The remark echoes language Musk used earlier this year when details of his milestone-driven SpaceX IPO equity package drew attention. At the time, he said such valuations would only make sense if humanity advanced toward a Kardashev II civilization, capable of harnessing stellar-scale energy. SpaceX IPO milestone The latest comment made by Musk comes after a historic weekend for SpaceX. The company recently went public on Nasdaq under ticker SPCX, raising around $75 billion in the largest IPO on record. Shares of the company surged by 19% on debut, valuing SpaceX at more than $2.1 trillion and making it the sixth-most valuable US company. The public listing of SpaceX also pushed Musk’s fortune to about $1.1 trillion, according to Forbes, making him the world’s first trillionaire. Moon city and Mars vision On Sunday, June 14, Musk forecast that SpaceX could reach $1 trillion in revenue by 2030, citing future infrastructure such as “Moon City,” lunar factories, and off-Earth AI manufacturing hubs. While Musk has long prioritized Mars settlement, his recent comments expand the vision to include lunar industry as a stepping stone toward interplanetary economies. How SpaceX got at the biggest IPO ever SpaceX’s transformation over the past six months has been striking. The company that built its identity around rocket launches and Starlink satellite internet has repositioned itself as an AI infrastructure giant. The company's valuation was around $800 billion in an insider share sale as recently as December. It rose to $1 trillion following SpaceX's acquisition of Musk's xAI in February, and has now vaulted to $1.77 trillion at the IPO price. That is more than double its valuation from July of last year. Much of that shift has been driven by a series of major computing infrastructure deals. SpaceX has signed agreements to provide AI compute capacity to Anthropic and Google for a combined $2.17 billion per month. Musk’s broader pitch places SpaceX at the centre of an ambitious vision: data centres in space, robot factories on the moon and a permanent human colony on Mars. Elon Musk world’s first-ever trillionaire SpaceX shares began trading, sending the company’s valuation past $2 trillion and cementing its place in the history books. Following the public listing, the ‘skyrocketing’ stock value has officially made company founder and CEO Elon Musk the world’s very first trillionaire. After the successful IPO, Musk emphasised that the public listing is merely a stepping stone toward a much grander, sci-fi-inspired vision for humanity. Speaking to a crowd of supporters and investors following the listing, Musk drew a sharp line between his company’s philosophy and that of traditional aerospace contractors. He said that older aerospace firms and his competitors built reliable rockets but they lacked the ambition required to truly push humanity forward. “While the other Aerospace companies they built good rockets and everything, they were simply not pursuing the technology that’s necessary to make life multi-planetary. To make Star Trek, to make the exciting science fiction futures that we've read about,” Musk said.