SpaceX IPO: The Biggest Market Debut in History?

SpaceX is officially heading towards what could become the biggest IPO in stock market history — and investors are already debating whether this is the opportunity of a generation, or a valuation that has simply gone too far.

But first, what is an IPO?

An IPO, or Initial Public Offering, is when a private company sells shares to the public for the first time on the stock market. In simple terms, it’s the moment ordinary investors get the chance to buy into a company that was previously owned only by founders, employees and private backers.

No ordinary space company

SpaceX is Elon Musk’s private aerospace business that designs rockets, launches satellites and provides space transportation services for governments and commercial clients. It also owns Starlink, a satellite internet network aiming to provide global broadband coverage from space.

Elon Musk’s rocket company is reportedly targeting a valuation of around $1.75 trillion, with speculation it could raise as much as $75 billion when it lists potentially as soon as early next month. That would make it larger than almost every company in the Nasdaq 100 except giants like NVIDIA, Apple and Microsoft.

The excitement surrounding the IPO has been building for months, and on Wednesday, SpaceX filed its prospectus with the Securities and Exchange Commission, saying it plans to list under the ticker SPCX on the NASDAQ. The road show to market the deal is set to start on June 8th.

Supporters argue SpaceX is not just another aerospace company. Some consider it as the centre of the modern space economy — combining satellite communications, defence contracts, AI infrastructure and space exploration into one giant growth story.

Huge ambition, but operating at a loss

According to the prospectus, SpaceX generated $4.7 billion in revenue during the first quarter, up 15.4% from a year earlier. However, the company also posted a net loss of $4.2 billion over the same period. This compares to a net loss of $528 million on revenue of $4 billion a year earlier.

The numbers reveal a growing divide inside the business.

Starlink has become the clear financial engine of the company, with operating income reportedly surging 120% year-on-year as subscriber growth accelerates globally.

By contrast, the AI division remains loss-making, while the core rocket launch business is also running at a loss despite dominating launches for both NASA and the Pentagon.

And yet investors are not simply valuing SpaceX on today’s earnings.

Buying into Musk’s long-term vision.

That vision stretches far beyond rockets and satellite internet. SpaceX says its ambitions include human settlement on Mars. The company is also pursuing futuristic plans for data centres in orbit which could be a reality as soon as 2028.

But that is also where scepticism begins.

Based on estimates of around $21 billion in annual revenue, a $1.75 trillion valuation would value SpaceX at roughly 83 times sales — significantly higher than even some of the most richly valued technology companies today.

Bulls argue investors are pricing in what SpaceX could become over the next decade, not what it earns today.

Bears argue that’s exactly the problem.

Critics say investors may be attaching enormous valuations to technologies and future ambitions that are still years away from generating meaningful profits. And while SpaceX has proven it can dominate launches, many of its largest projects — including Musk’s long-term Mars ambitions — remain hugely expensive and commercially uncertain.

The filing itself highlights those risks.

There are also governance concerns…

Filings show Musk will maintain extraordinary control over the company after listing. His special class of shares currently gives him roughly 85% of the voting power at SpaceX, meaning outside shareholders will have limited influence over strategic decisions.

That concentration of power may concern some investors, particularly given Musk’s leadership roles across multiple businesses, including Tesla.

There are also concerns the IPO could completely dominate financial markets and draw liquidity from the market.

In any normal year an IPO of this size could draw money and attention away from other companies hoping to go public this year.  However, with OpenAI and Anthropic also looking to go public this year, that may not be a problem.

Mega IPOs often generate huge demand in their early days, and Musk has built a reputation for convincing markets to back ambitious ideas long before they become profitable realities. Tesla’s rise from a niche electric vehicle maker into one of the world’s most valuable companies is the clearest example.

An IPO with a difference

Reports suggest SpaceX may allocate an unusually large percentage of its shares directly to retail investors, potentially giving ordinary traders greater access than a typical Wall Street listing would.

So while investors may finally have the opportunity to own a stake in SpaceX, they may have very little say in how the company is actually run.

Either way, the SpaceX IPO is shaping up to be far more than just another market debut.

It is becoming a test of whether investors still believe massive future visions deserve trillion-dollar valuations — and whether Elon Musk can once again persuade markets to fund the impossible.