SpaceX secretly files for what could be the biggest IPO ever

Elon Musk’s SpaceX has taken a major step toward going public, filing confidentially for an initial public offering with the U.S. Securities and Exchange Commission, according to people familiar with the matter. The move brings the rocket, satellite and artificial intelligence company closer to what could be the largest IPO ever recorded.

The draft registration was submitted quietly to the SEC, with sources requesting anonymity because the information has not been made public. The confidential filing process allows companies to begin the regulatory review process before formally announcing their intention to list, giving them flexibility on timing and pricing.

A June listing could be on the horizon

According to those familiar with the filing, the submission puts SpaceX on track for a public listing as early as June 2026. If that timeline holds, SpaceX would beat two other highly anticipated offerings to market  OpenAI and Anthropic  potentially making it the first in what observers are calling a trio of landmark tech and AI mega-IPOs.

The race to market matters for more than bragging rights. Being first among such high-profile names could give SpaceX a significant advantage in capturing investor appetite before it is spread across multiple blockbuster listings in quick succession.

Why this IPO would be historic

SpaceX has long been considered one of the most valuable private companies in the world, with its valuation climbing steadily on the back of its Starlink satellite internet business, ongoing NASA contracts, and the continued development of its Starship rocket program. A public listing at its current estimated valuation would dwarf previous records for IPO size, making it one of the most consequential market events in recent memory.

The company’s business has expanded well beyond its origins as a rocket manufacturer. Starlink now serves millions of customers globally and has become a significant revenue driver, while SpaceX’s AI ambitions have added another layer of investor interest ahead of any potential listing.

What comes next

A confidential filing does not guarantee a public offering will proceed on any specific timeline. Companies that file in this way can adjust or withdraw their plans depending on market conditions, regulatory feedback, or internal decisions. However, the fact that SpaceX has taken this formal step signals that the company and its leadership are serious about moving toward a listing.

With OpenAI and Anthropic also expected to pursue public offerings in the coming period, the second half of 2026 could represent one of the most active IPO windows the technology sector has seen in years. For investors who have watched the AI and space industries from the sidelines, the window to participate publicly may be opening sooner than many expected.

Source: Bloomberg