Anthropic Gives Investors Another Reason to Avoid SpaceX IPO

Anthropic’s IPO Filing Sends a Caution Signal to SpaceX Investors

The summer of 2026 is shaping up as the season when private tech giants finally knock on the public market’s door. SpaceX has filed its S‑1, OpenAI and Anthropic are not far behind, and investors are being asked to place bets on companies priced not in the tens of billions but in the trillions. Yet, while headlines have focused on the rocket company’s record‑shattering valuation, a quieter story is unfolding—one that should give anyone considering the SpaceX IPO a serious reason to pause. That story is Anthropic.

As we explored in our coverage of Anthropic’s IPO preparations, the company behind Claude is moving fast toward its own listing, and the financial details emerging paint a picture of a business that is leaner, more efficiently priced, and far closer to turning a real profit than SpaceX. The contrast between the two is stark enough to serve as a real‑world lesson in IPO due diligence—and a compelling prompt for any investor to look beyond the hype.

The Math That Matters: SpaceX vs Anthropic

Let’s start with the numbers that investors will actually have to digest once the roadshows begin. SpaceX is seeking a valuation between $1.75 trillion and $2 trillion, with plans to raise roughly $75‑80 billion. That price tag sits atop $18.7 billion in revenue earned in 2025—and a startling net loss of $4.28 billion just in the first quarter of 2026. In other words, even as the company scales, its losses are deepening.

Anthropic, meanwhile, is targeting a valuation around $900 billion and a capital raise of about $60 billion. Its 2025 revenue was a modest‑looking $4.5 billion. But here is where the story flips: Anthropic’s revenue has been accelerating so sharply that by May 2026 its annualised run‑rate had surged to roughly $44 billion. More importantly, the company expects to post its first operating profit in the second quarter of this year. That is not a distant promise. It is a milestone likely to arrive before the ink on the IPO paperwork is even dry.

The fundamental question any investor must ask is simple: how much am I paying for each dollar of sales, and how long until the company can stand on its own? The answer shows why Anthropic’s numbers are nudging even enthusiasts toward caution on SpaceX.

Why Valuation Multiples Are the Heartbeat of IPO Due Diligence

A “revenue multiple” sounds technical, but the idea is straightforward: take the company’s valuation and divide it by its annual revenue. It tells you how many years’ worth of current sales you are being asked to pay for. In hot markets, high multiples are common—but there is a line where price detaches from reality.

As visible in Figure 1 below, SpaceX’s revenue multiple is in the 91‑107 times range based on its 2025 sales. OpenAI, targeting a valuation of $852 billion to $1 trillion with $13.1 billion in revenue, sits at roughly 65‑76 times. Both are enormous figures, but Anthropic resets the benchmark: on its $44 billion revenue run‑rate, its multiple is around 20 times. For a company nearing profitability, that is a dramatically lower entry price relative to the cash being generated.

No multiple alone decides whether an IPO is overpriced. Growth rates, margins, and the size of the addressable market all matter. But when one candidate is burning billions while the other is about to break even, the arithmetic demands explanation. That is where clear‑eyed IPO due diligence steps in—and where the label “Anthropic SpaceX IPO caution” begins to earn its meaning.

SpaceX IPO Risk Factors: Beyond the Hype

Numbers are only part of the picture. The structure of the SpaceX offering introduces risks that are completely absent from a more conventionally governed company like Anthropic.

SpaceX is built around a dual‑class share structure that locks voting control in the hands of Elon Musk. Class B shares carry ten times the voting power of Class A stock. For a founder‑led rocket company, that may sound like a feature—continuity of vision. For a public shareholder, it means you are buying a financial interest with almost no say over strategy, executive pay, or even how conflicts of interest are handled in a web of interlinked Musk ventures such as xAI and Valor.

Add to this the likelihood that up to 30% of the IPO could be allocated to retail investors—an unusually high slice for a deal of this size—and you have a setup where individual buyers may absorb a large portion of the stock on day one while professional money stays cautious. The price could swing wildly once the lock‑up periods end and insiders begin to sell.

There is also the index fund question. As we noted in our analysis of S&P 500 eligibility, SpaceX will not qualify for the benchmark index for at least a year after its debut, and likely longer, because it needs four consecutive quarters of profitability. That means the massive passive flows that often support newly public giants will simply not be there. When trillions of dollars of index money are forced to sit on the sidelines, the only buyers left are those making active, hands‑on decisions—and they will be looking at the same math we have just examined.

AI Company IPO Comparison: Where Each Stands

All three of the marquee AI‑era IPOs—SpaceX, OpenAI, and Anthropic—are chasing a slice of the same investment dollar. But they are arriving at vastly different stages of financial maturity.

• OpenAI commands enormous revenue ($13.1 billion in 2025) and brand power, yet it is projected to lose $14 billion in 2026 before even approaching breakeven. Its revenue multiple of 65‑76 times reflects a bet that its lead in large language models will eventually translate into fat margins.
• SpaceX has the widest moat in launch services and satellite internet, but it is currently unprofitable, and its losses are growing. The market is being asked to value it at roughly 100 times revenue—a figure that assumes a flawless execution of Starlink’s global expansion.
• Anthropic is the smallest by legacy revenue, but its $44 billion run‑rate and imminent operating profit make it the only one of the trio that can credibly claim to be delivering a profitable growth story right now rather than at some undetermined future date.

This difference in maturity—not just in technology but in financial fundamentals—is the engine behind the shifting sentiment. Investors who once saw SpaceX as the undisputed prize of the 2026 IPO season are now taking a second look at the asset they can price more rationally. An AI company IPO comparison that leaves out this profitability gap would be incomplete, and potentially costly.

Conclusion

The 2026 IPO calendar is bringing a once‑in‑a‑generation collision of ambition and capital. But excitement is not an investment strategy. When one enterprise is offered at 100 times sales while losing billions, and another is about to turn a profit at one‑fifth the multiple, the market is sending a message: not all trillion‑dollar stories are created equal.

None of this means SpaceX will fail. It has real revenue, real hardware, and a loyal following. But the price already reflects a near‑perfect future, and the governance structure, retail allocation, and index exclusion add layers of risk that every buyer must weigh. Anthropic’s quieter, numbers‑first approach provides a tangible benchmark—and a reminder that even in an AI gold rush, the old rules of valuation still apply.

The very existence of a more reasonably priced, profitability‑adjacent alternative gives investors a concrete reason to apply “Anthropic SpaceX IPO caution” when studying the prospectus. No one can predict where these stocks will trade next year. But the data available today suggests that if you are uncomfortable paying a century’s worth of sales for a deeply loss‑making rocket company, you are not alone—and you have options.