The New IPO Benchmark: What The SpaceX Valuation Tells Us About The Future Of Deep Tech

SpaceX shattered every IPO record on 12 June, raising $75 billion and vaulting past a $2 trillion valuation by the closing bell – crowning Elon Musk the world’s first trillionaire in the process. The stock closed up 19.34% on its $135 target price, after an offering that was oversubscribed four times before trading even began.

To put this into perspective: the previous record for the largest IPO was Saudi Aramco’s 2019 listing, which raised around $25.6 billion. SpaceX secured nearly triple the previous record in just one day, effectively overriding concerns from the North Carolina State Treasurer’s office that the company was already overvalued at $1.77 trillion. Investor demand proved far more bullish, driving the valuation up by an additional $200 billion.

Trading volume reflected the intense market interest, with over 360 million shares changing hands during the debut. This activity was roughly ten times that of Cerebras, the year’s second-largest IPO, and more than double the daily volume recorded by Nokia on the same exchange. This fervour was driven largely by retail investors. Despite SpaceX setting an aggressive 30% allocation for individuals, well above the industry standard of 5-10%, demand was so overwhelming that many retail participants were left with only a fraction of their requested shares.

SpaceX’s market debut wasn’t just a record-breaker, it was a wealth-generation engine. The IPO minted 4,400 new millionaires from the company’s own ranks, including 400 centimillionaires. This prosperity extended to early institutional believers, who saw their initial capital multiply into legendary sums – most notably Founders Fund, whose $600 million bet blossomed into a $50 billion fortune.

Combined with massive gains for Sequoia and Andreessen Horowitz, these numbers provide concrete proof of the compounding power of the reinvestment flywheel.

Why This Is Bigger Than One Company

The most significant consequence of this debut will be the shift it triggers for the rest of the IPO pipeline.

SpaceX kicked off the summer as the season’s first major tech IPO – everyone is treating it as a litmus test for what’s coming next in the market. Anthropic and OpenAI are both expected to go public at some point, and how SpaceX performed, which banks led it, how the roadshow went, how the stock traded on debut, will shape decisions about timing, structure and scale for both companies. As Capital Economics noted, a high-profile, successful mega-IPO typically acts as a catalyst, encouraging other companies to capitalise on the positive market sentiment.

A sector-wide re-rating is already underway. Following the news, Rocket Lab shares rose 7%, while Firefly Aerospace and Intuitive Machines saw gains of roughly 25%. Shares of Planet Labs and Viasat also surged, each posting double-digit growth. None of these companies changed anything about their own businesses that week – what changed was that the market got direct evidence of how much investors are willing to pay for space and deep tech exposure, and every comparable company got repriced accordingly.

There’s also a liquidity effect that goes beyond aerospace. A $75 billion offering creates a large number of newly liquid investors, employees and early backers, and historically that capital doesn’t sit still. It tends to flow back into venture capital, angel investing and new startup formation, which is one reason analysts describe events like this as a flywheel rather than a one-off windfall.

The effect isn’t limited to orbital infrastructure either – increased confidence in mega-valuations for technically ambitious, capital-intensive companies tends to filter down to earlier-stage deep tech investing generally.

The Lesson Hiding In The Fine Print

SpaceX’s structure is unusual, with only 4.2% of the company offered to the public, an extremely small float for an IPO of this size, which is part of why demand was so intense and why the stock moved so dramatically on debut. Most deep tech companies won’t be able to replicate that structure, and shouldn’t try to.

The more significant takeaway is the underlying signal it sends regarding investor appetite for long-duration, capital-intensive ventures. SpaceX has historically run at significant losses while building toward a business model that takes years to mature. A successful debut of this size tells public markets, and by extension private investors who price companies with an eye on eventual exit, that extreme duration risk in deep tech is something investors will tolerate when the underlying technology and market position are strong enough. That’s a relevant reference point for any deep tech company currently being told by investors that their timelines are too long or their capital requirements too high.

There’s scepticism worth holding alongside the enthusiasm. Some Wall Street analysts have been openly critical of the valuation, with at least one putting fair value closer to $63 a share rather than $135, and questioning whether a $1.77 trillion price tag is sustainable for a company that remains unprofitable. The stock’s 19% first-day pop doesn’t resolve that debate, it means the market disagreed with the sceptics for one trading session.

Whether SpaceX can hold this valuation, and whether OpenAI and Anthropic can follow a similar path when they eventually list, will determine whether 12 June 2026 was a reset moment for deep tech or simply a very good day for one company.