SpaceX IPO share price slide revives tech offering hype worries

The SpaceX IPO share price has fallen steadily since a first-day surge, erasing $1 trillion from its high, according to Fortune. The drop matters because SpaceX’s June debut was billed by Fortune as the largest IPO in history and has become the first major test of a new wave of trillion-dollar tech listings.

Fortune reported that retail investors had shown strong demand for Elon Musk’s aerospace company before and during the offering. That enthusiasm helped push SpaceX shares to a high of $176 on their first day of trading, the magazine said.

The reversal has revived an older warning about technology IPOs: strong demand at the opening can set a high price, but public markets still test whether the business can support that valuation. Fortune framed the SpaceX slide alongside its own 2016 cover story, which warned that the market for billion-dollar unicorn IPOs was under strain.

Why is the SpaceX IPO share price under pressure?

Fortune did not identify one event behind the decline. It described the move as part of a familiar pattern in which heavy investor excitement can lift a company’s debut but fail to sustain a billion- or trillion-dollar market value after trading begins.

The magazine pointed to earlier tech listings that drew strong interest and later disappointed. Lending Club’s IPO was 20 times oversubscribed, Fortune reported, but its stock fell 50% from its high within the first year of trading.

Fortune also cited GoPro as a cautionary example. The camera company peaked at $94 a share soon after listing, according to the magazine, and now trades at 68 cents.

What other trillion-dollar IPOs are in focus?

Fortune said 2026 has been described as the year of the trillion-dollar IPO. SpaceX was the first of that group to go public in June, while OpenAI and Anthropic are also aiming for high-profile market debuts, according to the magazine.

The comparison matters because investors often judge new listings against recent IPO performance. A sharp fall in SpaceX shares could shape how buyers assess other large artificial intelligence and technology offerings, though Fortune did not report any change in OpenAI’s or Anthropic’s plans.

For investors weighing these deals, Fortune’s Amanda Gerut recommended focusing on revenue, reading the prospectus and staying patient. A prospectus is the formal filing that lays out a company’s business, risks and financial details before a public offering.

Fortune’s broader point was that the cycle has returned after a decade: celebrated private technology companies can attract intense demand when they list, but public investors still scrutinize sales, risks and the durability of growth once the opening trade is over.

This story draws on original reporting from Fortune.