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Hacker News Hacker NewsSpaceX is an AI company without a frontier model. Until Jan 2026 SpaceX was an aerospace company. Then xAI was merged into SpaceX on January 30, 2026, so SpaceX became an AI company less than 6 months ago.
Now I think SpaceX is massively overhyped, but is the share price returning to IPO opening not just a sign that the banks accurately estimated something?
It seems like the SpaceX IPO really breaks the traditional notion of market cap.
Market cap has an unstated assumption that most of a company’s stock could, in theory, be traded unencumbered. Thus shares * price gives a very rough view of the value of the company. Everyone understands that this valuation has problems: it attributes the last marginal trade to the entire stock, and doesn’t account for large purchases/sales. But it’s useful nonetheless.
But with SpaxeX, only a tiny fraction of those shares are even theoretically tradeable, so it seems bizarre to calculate valuation using price * shares. I think this is the source of discomfort around the $2T market cap.
It seems like, similar to how there are long and short term liabilities, there should be long and short term market caps.
“Short term market cap” would be price * “number of shares that could theoretically be available for trade within the next year”, from all sources (including vesting employee options, expiring lockups, etc).
“Long term market cap” would be price * total authorized shares.
So SpaceX’s long term market cap would remain at $2T and its short term market cap would be, say, 5% of that (about $100B).
If the company doesn’t quickly show a financial picture that matches the sky high pro formas then even anything close to those levels will become extremely hard to justify.
The bond markets have already turned very negative on SpaceX with extreme red flags developing there.
Something like 100k flights cancelled. Upgrading the planes to have starlink is onerous, high idle/offline time, and capital intensive.
The total potential market for Starlink shrinks by at least a few hundred thousand people each week.
I didn't buy a single share.
It seems direct listings gained some popularity but overall most companies seem to rely on the traditional underwriter model.
According to [0] -
> 22 companies went public on major exchanges using IPO auctions in the U.S. between 1999-2008, but there have been none since then, as of May 2025. Starting in 2018 when Spotify went public, there have been at least 20 companies that have gone public using a direct listing. With both IPO auctions and direct listings, underwriters do not have discretion to allocate shares to their preferred clients.
> However, a year later, we see that the majority of companies are either outperforming or underperforming the market by more than 10%. We also see that more companies are underperforming than beating the index (the red bars stretch below the 50% line).
> That seems to indicate that for some companies, the initial IPO enthusiasm wanes or expected earnings are not met, and investors reprice the IPO to reflect the actual, slower growth of the company.
> Three years after their IPO, we calculate that almost two-thirds of IPOs are underperforming the market, with most (64%) more than 10% behind the market’s returns.
* https://www.nasdaq.com/articles/what-happens-to-ipos-over-th...
> 56% of IPOs bought at the offer price lost money after 3 years. That number rises to 57% after five years. The numbers are higher when bought at the first day closing price: 60% lost money after 3 and 5 years. Worse than a coin flip.
> Only 19% of IPOs doubled or more after three years and 22% after 5 years when bought at the offering price. The numbers were worse when bought at the closing price.
> Of course, the lottery-like returns were possible, but it amounted to about 0.4% of all IPOs after 3 years and 1% after five years.
* https://novelinvestor.com/the-hype-and-hot-air-around-ipos/
Interview with a researcher that has looked at IPOs over the last few decades:
> We’ve previously compared IPOs to lotteries that are prone to inflated valuations and low returns. Today we welcome “Mr. IPO,” Professor Jay Ritter onto the show for a deeper dive into IPO performance, for his insights into SPACs, and to hear his research into why economic growth doesn’t correlate with stock returns. Early in the episode, Jay unpacks how long-term IPO returns perform against first-day trading. While exploring the role that venture capital plays in tech IPOs, Jay talks about why negative earnings don’t affect tech IPOs in the short-term before sharing how skewness factors tend to impact young companies. Reflecting on how IPOs are usually underpriced, Jay discusses how the interests of companies are not aligned with the interests of IPO underwriters. After looking into IPO allocation, Jay compares the 2020 ‘hot IPO market’ with the internet bubble of the late 90s. Later, we ask Jay about what special-purpose acquisition companies (SPACs) are and why they’ve exploded in recent years. His answers highlight their investing benefits, risks, and why SPACs might be a better option for companies than IPOs. We examine how SPACs have historically performed and then jump into our next topic; why economic growth isn’t a good indicator that a country is worth investing in. He touches on why returns don’t correlate with economic growth, the place of capital gains and dividend yields when investing abroad, and how innovations in an industry can lead to higher stock returns. We wrap up our conversation by asking Jay for his take on whether the stock market is efficient before hearing how he defines success in his life. Tune in to hear our incredible and informative talk with Jay Ritter.
* https://rationalreminder.ca/podcast/139
Picking individual winning stocks can be hard:
* https://en.wikipedia.org/wiki/A_Random_Walk_Down_Wall_Street
I'm not invested in this myself, figuratively or literally.
I guess for any stock to rise, there have to be people thinking it will be worth more in the future.
I presume there is a way to mathematically determine how atypical the SoaceX stock is behaving. Does anyone have a reference to how this would normally be done?
SpaceX bond worth 10% less than issue price – heading for junk bond status
PS: I am not saying SpaceX is a good investment.
ffs, wake me up when it's at least 10% below what it IPO'd for. The idiotic tulip mania that followed in the few days after it floated was noise, but as of today, it seems the IPO price was pretty much right. However, endless headlines about the price crashing etc.
From a fundamentals perspective, it's an insane price, obviously. But the narrative that it's all coming crashing down is obviously not correct (today).
Many people can soon sell their SpaceX stock, I don't think the S&P will safe them later.