The Biggest IPO Wave Ever? Inside SpaceX, OpenAI & Anthropic’s 2026 IPO Listings

Three companies, none of them profitable by conventional accounting, are lining up for the most expensive stock market debut in history. Combined, SpaceX, OpenAI, and Anthropic are targeting valuations that add up to roughly $3.6 trillion: that’s the same number as the GDP of France. They are not asking you to value what they earn today. They are asking you to price what they believe humanity becomes tomorrow. That is a very different proposition, and right now, Wall Street is nodding along.

Let's break down exactly what these three IPOs are, when they're landing, what the numbers say (and don't say), what structural risks come buried in the fine print, whether the market has the appetite to absorb them, and what it means if even one stumbles.

SpaceX, OpenAI & Anthropic: What These Companies Actually Do

SpaceX makes rockets, runs Starlink, and also holds xAI after the merger as its AI bet. The satellite internet network that now reaches over 10 million subscribers across 160 countries. Its Falcon 9 is the most-launched orbital rocket in history. Its Starship vehicle, still under development, is the centrepiece of its Mars and space infrastructure ambitions. 

Click here to read a detailed deep dive on SpaceX IPO.

OpenAI made ChatGPT, which crossed 900 million weekly active users as of early 2026. Revenue grew from roughly $2 billion annualised in 2023 to over $20 billion by end-2025.

Anthropic built Claude, the AI assistant increasingly dominant in enterprise software. Its run-rate revenue reportedly crossed $44 billion annualised as of May 2026, and the company is on track to post its first-ever operating profit, approximately $559 million, in the second quarter of 2026, per a person with knowledge of the financials cited by CNBC.

SpaceX, OpenAI & Anthropic IPO Dates and Timeline

Sources: SEC filing (SpaceX), Reuters, Bloomberg, CNBC (OpenAI/Anthropic). Dates are estimates and subject to change.

SpaceX is furthest along. The S-1 is public, Goldman Sachs is leading a 21-bank syndicate, and the roadshow reportedly begins around June 4. OpenAI and Anthropic are still in the confidential filing or pre-filing stage, but both have clearly signalled a 2026 public debut.

SpaceX, OpenAI & Anthropic Valuations Explained

Anthropic's annualised run-rate as of May 2026 is estimated at ~$44B. 

Sources: SpaceX S-1, CMC Markets, IndexBox, Sophic Capital, Bloomberg.

For context: Nvidia, the most expensive of the Magnificent 7 by revenue multiple, trades at approximately 21x trailing sales. And Nvidia is massively profitable. SpaceX is asking to trade at more than four times that premium, with a growing net loss.

There's a further wrinkle inside SpaceX's numbers worth understanding. Starlink is the only part of the business making real money, contributing $11.4 billion of SpaceX's $18.7 billion in 2025 revenue. But as per SpaceX's own S-1 prospectus, average revenue per Starlink subscriber has dropped from $99/month in 2023 to $66/month by Q1 2026, a 33% decline, driven by cheaper international pricing tiers. SpaceX explicitly forecasts this will keep falling. The subscriber base is growing fast enough to offset the ARPU erosion for now. Whether that trade-off holds at scale is one of the genuinely open questions in the bull case.

Why Investors Are Paying Trillion-Dollar Valuations

Here's the core analytical tension: none of these companies can be justified by a traditional price-to-earnings framework. What they're selling is what we can call a Narrative Premium: the gap between where the business is today and where the story says it will go.

• SpaceX's story: Reusable rockets collapse the cost of orbit, making Starlink the backbone of global connectivity and eventually enabling data centres in space. 
• OpenAI's story: It will be first to achieve artificial general intelligence (the point where AI surpasses human capability), and whoever gets there captures a disproportionate share of the entire software economy. 
• Anthropic's story: The safety-first AI lab becomes the enterprise stack for regulated industries like healthcare, finance, law, that can't afford hallucinations.

All three are compelling. All three are also impossible to stress-test on a discounted cash flow model.

Think of it this way: you're not buying a store that makes ₹100 a day and may make ₹500 a day in five years. You're buying a land title in a city that hasn't been built yet. The city might become Mumbai or it might stay a sandlot. The price you're paying assumes Mumbai.

Governance Risks Investors Should Know Before These IPOs

This section tends to get skipped in the excitement. It shouldn't.

SpaceX: The S-1 confirms Musk holds approximately 42% of equity but controls 85.1% of votes, through a dual-class structure where Class B shares carry 10 votes per share to Class A's one. The prospectus states plainly: "This will limit or preclude your ability to influence corporate matters and the election of our directors." SpaceX also qualifies as a "controlled company" under exchange rules, exempting it from requirements to maintain a majority independent board. You're not buying into a company you can influence. You're buying a financial stake in one man's vision.

OpenAI: The company completed its conversion from a nonprofit to a Public Benefit Corporation in late 2025, with a separate nonprofit foundation retaining a stake reportedly valued at approximately $130 billion. More striking: the Technerdo analysis of OpenAI's IPO filing reports that Sam Altman, the CEO of a company targeting a $1 trillion valuation, shows equity of "TBD." The world's most discussed CEO may have no confirmed ownership stake in the company he runs. Whether that's resolved before IPO, and what it signals about alignment, is worth watching.

These aren't dealbreakers. Meta, Alphabet, and Salesforce all use dual-class structures. But the governance terms are part of what you're pricing. You're paying $1 trillion for a company where the public shareholder is, structurally, a passenger.

How SpaceX, OpenAI & Anthropic Could Impact US Market Liquidity

The short answer: probably yes, but not without displacement.

The three IPOs together could demand north of $200 billion from public markets. The entire US IPO market raised just $45 billion in all of 2025. Goldman Sachs analysts, as cited by Reuters and Nasdaq, project 2026 IPO proceeds could reach approximately $160 billion, a quadrupling from 2025, and that was before the current wave fully materialised.

The liquidity case for the bulls: there is an estimated $8 trillion sitting in US money market funds. SpaceX's $75 billion raise represents roughly 1% of that. Institutional money has spent years accessing AI via proxy, buying Nvidia for chip exposure, Microsoft for its OpenAI stake, Alphabet for its DeepMind and Anthropic positions. The moment pure-play labs are publicly available, that demand unlocks.

The displacement risk is subtler. When hundreds of billions flow into new listings, institutional portfolios rebalance. Money rotating into SPCX, OpenAI, or Anthropic has to come from somewhere and that somewhere is likely the existing Magnificent 7. Even investors who never touch an IPO stock could feel this as a headwind in positions they already hold.

Why 2026 May Become the Biggest IPO Year Ever

The 2021 record stands at $156 billion in total US IPO proceeds. Goldman Sachs projects 2026 could exceed $160 billion and that's with conservative assumptions. SpaceX alone, at $75-80 billion, would nearly double every dollar raised across all 2025 US IPOs.

But the scale is only part of the story. The quality of the pipeline matters. Cerebras Systems just debuted at a $70 billion valuation and saw shares surge 68% on day one. Fervo Energy set the record for the largest renewable energy IPO ever. These are warmups. The market is being conditioned for size before SpaceX arrives.

Early Investors vs Public Investors in SpaceX, OpenAI & Anthropic

The early investors, the ones who backed these companies at seed or Series A valuations, are sitting on returns that are almost incomprehensible. A rough illustration for your reference:

Note: Entry valuations are approximate, based on publicly reported funding rounds. These are illustrative of magnitude, not precise figures. Actual returns depend on dilution, ownership percentage, and final IPO price.

Public investors who buy at or after IPO pricing are not getting the same trade. They're buying at the point where the private market has already done 100x to 800x of the appreciation work. That doesn't make these bad investments, but it reframes what "getting into SpaceX" actually means in 2026 versus what it meant in 2015.

The IPO is not the beginning of the story for these companies. It's the point where early backers convert unrealised gains into real, liquid cash and public investors provide the exit liquidity that makes that possible. Understanding that dynamic doesn't make these offerings unattractive. It just means you're entering at a different point on the curve than the people who made the biggest returns.

What Happens If These IPOs Fail?

The AI bull market has been running largely on anticipation. The S&P 500 has absorbed inflation and geopolitical shocks partly because institutional investors believe AI infrastructure spending won't slow. These three IPOs are the moment that narrative meets an actual, publicly traded price tag.

If SpaceX trades materially below its listing price in the first weeks, it doesn't just hurt SpaceX shareholders. It challenges the entire framework that says pre-profitable AI-adjacent companies deserve frontier valuations. History offers a clear warning: of the five largest IPOs in modern history, only Visa significantly outperformed markets. Saudi Aramco listed at nearly $1.7 trillion in 2019 and still trades below its issue price. Facebook's IPO was technically disorganised and the stock fell 38% in six months.

A weak debut from any of the three wouldn't necessarily trigger a market-wide crash. But it would force a repricing conversation across AI stocks.

Should Investors Buy These IPOs at Trillion-Dollar Valuations?

These are extraordinary businesses. OpenAI and Anthropic's revenue growth is historically rare at this scale. Starlink's profitability within SpaceX is genuinely impressive.

But public investors are being asked to buy in after the private market has already run valuations from near-zero to near $1 trillion. The question to ask before chasing any of these debuts is not "is AI the future?", it almost certainly is. The question is: at what price does even a correct thesis stop being a good investment?

Saudi Aramco controls over 10% of global oil. It was the right company in the right sector at the right macro moment. It also hasn't rewarded public-market investors in six years.

The narrative is extraordinary. The entry price is extraordinary too. Making sure those two things align, for your timeline, at your price, is the only homework that matters here.