SpaceX filed its S-1 IPO prospectus with the SEC in May 2026, and the ripple effects are already reshaping the tech IPO landscape. Both Anthropic and OpenAI have now confidentially filed their own draft prospectuses, setting the stage for what could become the most consequential stretch of tech listings since the dot-com era.
Anthropic submitted its confidential draft S-1 on June 1, 2026. OpenAI followed exactly one week later, on June 8. The timing is not coincidental. When a company worth nearly $2 trillion kicks open the IPO door, everyone else in the hallway tends to rush through it.
SpaceX is setting the table
SpaceX’s IPO is shaping up to be the largest in history. The company is targeting a debut valuation of approximately $1.75 trillion, with pricing expected around June 11, 2026.
The offering involves roughly 555 million shares priced at $135 each. Demand has been overwhelming, with shares reportedly oversubscribed by more than four times.
