Companies behind ChatGPT, Claude, Starlink and Elon Musk’s space ambitions are moving toward public listings with valuations that could cross the trillion-dollar mark, testing whether investors believe the AI boom can justify its historic price tagynet|Three of the world’s most closely watched technology companies, SpaceX, Anthropic and OpenAI, are moving toward public listings in what could become one of the most consequential IPO waves Wall Street has ever seen.The companies are not just another group of high-growth startups. Together, they sit at the center of the two biggest technology stories of the decade: artificial intelligence and commercial space. OpenAI brought ChatGPT into everyday life, Anthropic built Claude into one of its strongest competitors, and SpaceX turned reusable rockets and satellite internet into a private empire led by Elon Musk.5 View gallery SpaceX, Anthropic and OpenAI are moving toward public listings in a potentially historic Wall Street IPO wave (Photo: John Raoux\AP, JRdes / Shutterstock.com, Meir Chaimowitz/shutterstock)Now, all three are preparing to let public investors buy shares. SpaceX is expected to debut first, with reports pointing to a massive offering at $135 a share and a valuation of roughly $1.75 trillion to $1.77 trillion, potentially making it the largest IPO in history. Anthropic has reportedly submitted a confidential filing to U.S. regulators, while OpenAI has also filed confidentially, though it has not committed to a timetable for its listing.What is an IPO?