SpaceX says it plans to raise up to $75 billion when it goes public this month in what could be the largest stock market debut ever, and it would put Elon Musk on course to becoming the first trillionaire.

SpaceX Is Going Public. Should You Buy It -- Or Just Buy More Tesla Stock?

SpaceX CEO Elon Musk owns a stake in his reusable rocket maker that's worth $866.5 billion on paper, according to the company's updated IPO prospectus published on Wednesday. SpaceX said it plans to price its upcoming IPO at $135 a share for a valuation of about $1.77 trillion.

Wall Street has speculated whether the world’s richest person will consider a tie-up for his two most valuable companies.

Tesla (NASDAQ:TSLA | TSLA Price Prediction) at $423.70 looks expensive, because the price embeds AI and robotics promises the business has not yet delivered. With the stock back above $400 after a 7.95% one-month rebound,

Investors grew optimistic over the robotaxi rollout in early May, but there's a need to be realistic here. The SpaceX IPO is also of great significance to Tesla investors.

Elon Musk is talking openly about merging Tesla (NASDAQ:TSLA) and SpaceX, and he is doing it at a strange and convenient moment. SpaceX filed its S-1 on May 20, 2026, targeting a $1.75 trillion valuation,

As Elon Musk-led SpaceX is weeks away from its public debut, bettors on the Prediction Market platform Polymarket have weighed in on the closing market capitalization of the commercial space flight company following the IPO.

JPMorgan once sued Tesla, but is now helping hype up SpaceX, which could secure a nearly $2 trillion valuation next week and make Musk the world's first trillionaire.