Can the Stock Market Swallow Anthropic, SpaceX, and OpenAI?
The global equity markets are facing a potential influx of massive private companies—Anthropic, SpaceX, and OpenAI—whose valuations are reaching the trillion-dollar mark. The central question is whether the public stock market can absorb these entities without triggering a systemic crash or a massive redistribution of risk from venture capitalists to retail investors.
Index Fund Mechanics and the "Passive Money" Trap
The primary mechanism for absorbing these IPOs is not necessarily organic demand from active investors, but the structural requirements of passive index funds.
Recent discussions suggest that index providers have modified their rules to facilitate the entry of these giants. Specifically, for the SpaceX IPO, it is reported that index providers waived the profitability requirement and significantly shortened the "seasoning window" (the time a stock must trade before being added to an index).
"Rule changes for the SpaceX $SPCX IPO: Index providers waived the profitability requirement and cut the seasoning window from 90 days to 5. This forces over $30 trillion in passive 401k and retirement money to buy SpaceX at IPO valuations."
This structural shift means that a significant portion of the IPO float is sold to price-insensitive investors—pension funds and 401ks—who must buy the stock regardless of its valuation because it is part of the index. This creates a high IPO price floor that may not be supported by fundamental value.
Valuation Divergence: Revenue vs. Speculation
There is a sharp divide in how the market views the valuations of these companies. Some argue that the massive growth justifies the price, while others see a bubble reminiscent of the 1920s.
The Bull Case for AI and Space
Proponents argue that the revenue growth of these companies is unprecedented. For example, Anthropic's revenue is reported at $47 billion, representing a 50x growth since 2024. When compared to Google's 2004 IPO, the current AI labs are operating at a much higher revenue scale, making a trillion-dollar valuation less "insane" than it initially appears.
Additionally, the real-world infrastructure spending—data centers, energy grids, and launch hardware—creates tangible economic activity and jobs, which may offset potential share price losses if the bubble bursts.
The Bear Case and Systemic Risk
Critics point to a lack of real-world quality-of-life improvements relative to the trillions in valuation. There is also concern that these companies are "bundling" disparate businesses. In the case of SpaceX, critics argue that investors are forced to buy into a functioning rocket business bundled with more speculative AI ventures (xAI).
Some analysts compare current market metrics to the 1929 crash, citing that the Shiller PE (CAPE) and the Buffett Indicator (Market Cap to GDP) are currently higher than they were at the 1929 peak.
The "Exit Strategy" Theory
A recurring theme in the discussion is the idea that these IPOs are timed as a strategic exit for private investors. By going public during a period of market all-time highs and high investor greed, these companies can secure a massive capital infusion before a potential market correction.
"They're not just racing to gain dominance in AI, they're also racing to IPO before the music stops? IPOing and getting a bunch of cash... is a lot better than being unable to get that capital infusion before the house of cards collapses."
Market Capacity and Liquidity
Despite the trillion-dollar valuations, some argue that the actual amount of money the market needs to "swallow" is relatively small. Because companies do not sell their entire float at IPO, the actual volume of shares issued may only be $100 billion to $500 billion. Given that the NYSE handles massive daily volumes and the top S&P 500 ETFs hold trillions in assets, the physical capacity of the market to absorb the shares exists, even if the long-term valuation sustainability is questionable.