SAN FRANCISCO, June 3 : Beware the ghosts of IPOs past.SpaceX and Anthropic are preparing for what may be the biggest public-market launches in U.S. history, with OpenAI rumored to be close behind. That will put the companies' chiefs in the sights of the buttoned-down world of Wall Street, even as the

Cerebras was the warning. SpaceX, OpenAI, and Anthropic could bring the same AI IPO lockup risks at a far bigger scale.

Anthropic has confidentially filed for an IPO just days after SpaceX's S-1. The AI startup's public-market ambitions could spark a battle for investor attention and growth capital.