The Reversal: Why the Companies That Did Not Need Wall Street Are Now Racing to Join It

Anthropic filed its S-1 — the formal registration document required before a company can list shares on a public exchange — on June 1st.Anthropic blog post Its annualized revenue run-rate, the company's current monthly pace multiplied to a full year, had crossed $47 billion earlier that month, up from $9 billion at the end of 2025.Anthropic blog post It did not need public markets to keep building.

That is the fact nobody is leading with. The financial press has spent the week describing three companies — Anthropic, SpaceX, and OpenAI — as supplicants to the public markets, asking whether Wall Street has the appetite to swallow the largest batch of IPOs in history. The combined market value being dumped onto exchanges could reach $4 trillion within months.The Economist Can the market absorb it? Will there be indigestion?

The better question is why these companies are choosing to gorge themselves on public capital at all.

Anthropic raised $65 billion in fresh equity five days before its S-1 landed at the SEC.Anthropic blog post The company has Altimeter, Sequoia, Google, Amazon, and every other name that matters on its cap table. It has the compute deals, the hyperscaler partnerships, the enterprise contracts. It is not a company in financial distress. It is not a company that needs a listing to survive.

SpaceX is raising $75 billion at a $1.75 trillion valuation because it can, not because it must.Reuters The IPO will hand out banking relationships and index inclusion and employee liquidity to people who have been waiting years for it. But Elon Musk's rocketry firm does not require a Nasdaq ticker to keep launching satellites.

OpenAI closed a $122 billion funding round in March at a $852 billion valuation.TechCrunch Sam Altman runs a company generating billions in monthly revenue with access to governments across multiple jurisdictions. The suggestion that OpenAI requires retail investor capital to fund its next major model cycle misreads the structure of a firm that has consistently raised from the world's largest institutional investors.

Three companies that have already won without Wall Street are now racing to join it. The financial press is covering this as a supply story — can markets absorb the supply? — when the real story is a demand story. What are these companies trying to buy?

Here is one answer: legitimacy, of a specific kind.

Public markets are not just a source of capital. They are a governance mechanism. When a company goes public, it submits to quarterly earnings calls, to activist investors, to the short-seller ecosystem, to the forensic attention of the SEC. These are not neutral processes. They reward short-term performance signaling, penalize long-horizon research investments that cannot be expressed as quarterly guidance, and create legal exposure for promises made in press releases. Every company that has gone public in the last thirty years has eventually learned this lesson.

The AI labs have spent years arguing they are different. That they require time horizons that markets cannot provide. That the governance of transformative AI is too important to be subject to quarterly earnings pressure. That is the explicit argument behind Anthropic's public benefit corporation structure, behind OpenAI's original nonprofit-to-capped-profit restructuring, behind the entire safety-first positioning of the frontier lab movement.

Now the same companies are choosing to enter the one environment most designed to punish exactly the behavior they have argued is necessary.

This is not a contradiction without explanation. It is a signal worth taking seriously.

One possibility: the IPO is not primarily about capital. It is about position. If Anthropic enters the Nasdaq-100, it becomes embedded in every index fund that tracks it. If SpaceX lists, it becomes the largest aerospace holding in any passive equity portfolio. These are not just investment positions — they are political and commercial immunities. A company that is too large for a pension fund to ignore is a company that regulators think twice before touching, that enterprise customers trust more readily, that potential employees can be recruited with public equity.

Another possibility: the companies are hedging against each other. The AI race has produced three dominant private players racing toward the same destination. Whoever lists first gets the index inclusion first, the analyst coverage first, the institutional ownership first. The window to go public at these valuations may not stay open forever. If any of the three stumbles, if a model fails to ship, if a safety incident produces regulatory scrutiny, the window closes. The race to IPO is also a race to lock in market credibility before the inevitable slowdown that every high-growth company eventually hits.

A third possibility is the simplest: insiders want liquidity. Early investors in these companies have been waiting years to exit. Employees have equity they cannot sell. The private markets are not deep enough to absorb the secondary transactions that large investors require. Going public is the only mechanism that frees the capital.

These three explanations are not mutually exclusive. The companies themselves have given contradictory signals — transparency commitments alongside confidential filing processes, public benefit rhetoric alongside aggressive growth optimization. The truth is probably some combination of all three.

What is clear is the structural position this puts the rest of us in.

When the three most consequential technology companies in the world enter public indexes simultaneously, something shifts in the market's own functioning. Every algorithmic trading system that tracks the Nasdaq-100 will have to hold these names. Every options market that prices volatility will have to incorporate their earnings releases. Every risk model at every pension fund and sovereign wealth fund will have Anthropic and SpaceX embedded in its assumptions about market behavior. These companies are not just being priced by the market — they are becoming the market.

The Economist's Buttonwood column this week noted that the number of public companies in America has fallen by half since 1996, from 8,000 to 3,900. The IPO market, which once funded the dynamism of American capitalism, had collapsed to 115 listings per year.The Economist Into that diminished arena, three of the largest companies in history are now pouring themselves simultaneously.

The question is not whether the market can swallow them. Markets are good at absorbing whatever is put in front of them, at least mechanically. The question is what the market becomes in the process.

When the infrastructure and the institutions it regulates start to coincide, price discovery works differently. When the companies that build AI systems also become the assets that AI trading systems hold and price and optimize around, the feedback loops become harder to see from the inside. The companies that insisted they needed freedom from quarterly earnings pressure are now racing to prove they can outperform within it.

Anthropic's annualized revenue run-rate crossed $47 billion in May 2026 when it filed. It did not need public markets to continue building. That is the fact that makes everything else worth asking.