US stocks: SpaceX IPO haul rises to $85.7 billion after underwriters exercise greenshoe

SpaceX's IPO became the largest in history at $85.7 billion after underwriters exercised the greenshoe option to purchase an additional 83.3 million shares, beyond the initial $75 billion raised at $135 per share. The offering was oversubscribed 3.5 to 4 times with over $250 billion in investor orders, and shares surged 19% on debut and another 7% the following session, lifting the company's market capitalisation above $2 trillion and making Elon Musk the world's first trillionaire. The blockbuster deal signals robust investor appetite for upcoming mega-listings from AI heavyweights Anthropic and OpenAI.