SpaceX, OpenAI, Anthropic IPOs test market liquidity limits

Three companies that have never traded publicly are preparing to enter the market in 2026, and together they represent a test of how much capital the financial system can actually absorb at once. SpaceX, OpenAI, and Anthropic carry private valuations that add up to more than one and a half trillion dollars. None of them has ever answered to public shareholders. All three have grown in the protected environment of private funding rounds. Now they want to go public at precisely the moment when investors are starting to ask harder questions about whether artificial intelligence companies can actually make money.

The scale of what's coming is almost difficult to grasp in concrete terms. OpenAI is currently valued around five hundred billion dollars, though it is negotiating a new funding round that could push it above seven hundred and fifty billion. SpaceX has completed secondary transactions that value the company at roughly eight hundred billion dollars. Anthropic is aiming to exceed three hundred billion in its next capital raise. If any one of these companies went public tomorrow at these prices, it would rank among the largest corporations in the world. To put that in perspective, the entire U.S. IPO market raised just over thirty billion dollars in the first nine months of 2025. A single offering from SpaceX would dwarf that figure and would surpass the Saudi Aramco IPO of 2019, which at twenty-nine billion dollars remains the largest public offering in history.

But size alone is not the real problem. The actual risk lies in whether the market has enough liquidity to handle these transactions without breaking. Morgan Stanley has warned in its analysis of primary market capacity that individual offerings larger than twenty to twenty-five billion dollars create systemic liquidity risk, especially when several of them happen in the same year. When a company tries to raise more than twenty-five billion dollars through an IPO, it is not simply looking for demand. It is pulling liquidity out of the system that would otherwise flow to established public companies or to debt markets. For many investment managers, buying into such an offering means selling something else. The impact ripples across the entire market, not just to the new stock.

What makes this worse is that these three companies are not lean startups. They are already operating at the scale and cost structure of mature enterprises. SpaceX employs more than thirteen thousand people and spends tens of billions of dollars annually on Starship development and Starlink expansion. OpenAI has tripled its operating expenses in less than three years to maintain its computing infrastructure and data centers. Anthropic is on a similar trajectory, burning through capital at a rate that depends entirely on continued outside funding. Bain & Company has identified this cost structure as a major risk factor in large IPOs, particularly in an environment where the cost of capital is no longer exceptionally cheap.

The timing could hardly be worse. In recent months, several companies tied to AI infrastructure have taken significant losses on the public markets. Oracle and Broadcom, two pillars of the sector, have fallen sharply even as their revenues have grown. The reason is not that their businesses are failing. It is that investors have begun to doubt whether the enormous sums being poured into AI infrastructure will generate profits quickly enough to justify the spending. Last year, global investment in data centers and AI computing capacity exceeded three hundred billion dollars. Yet operating margins have compressed in many cases because energy costs and financing costs have risen. The conversation has shifted away from technological possibility and toward a much harder question: what is the actual return on all this capital?

There is also the matter of timing and coordination. Several of these offerings could happen in the same calendar year, possibly within weeks of each other. The market cannot absorb multiple offerings of this magnitude without friction. Companies will compete for the same pool of capital, and not all of them will be able to set favorable terms simultaneously. Some will have to wait, or accept less attractive pricing. The question facing the market in 2026 is whether three of the world's most valuable companies can all go public at once, or whether the system will force them to choose who goes first.