The AI IPO market in 2026 raised nearly $90 billion in US venture-backed listings, the second-highest annual total on record, according to Crunchbase. But 83% of that came from a single company: SpaceX, which pulled in $75 billion at pricing and $85.7 billion with the greenshoe. Cerebras added $5.5 billion. Everything else combined raised under $10 billion. Enterprise software raised almost nothing.
How big was the AI IPO market in 2026?
Nearly $90 billion in proceeds from US venture-backed tech companies, per Crunchbase data published September 16, 2026. That is the second-highest annual tally ever recorded, with three-plus months still to run. It reads like a reopened window. The distribution says otherwise.
The $90 billion headline
Two companies account for 89% of the money. SpaceX took roughly 83% of the total. Cerebras Systems took about 6%.
Everything outside those two — around 21 venture-backed tech companies that completed Nasdaq or NYSE offerings of $40 million or more — raised less than $10 billion combined, Crunchbase reports.
That is not a market. That is one launch and a long tail.
| Company | Raised | Share of 2026 total | Sector |
|---|---|---|---|
| SpaceX | ~$75B at pricing ($85.7B with greenshoe) | ~83% | Space / AI compute |
| Cerebras Systems | $5.5B | ~6% | AI semiconductors |
| All other VC-backed tech IPOs (~21) | <$10B combined | ~11% | Energy, defense, quantum, consumer |
| Total | ~$90B | 100% | Second-highest year on record |
What the headline number hides
Strip out SpaceX and the 2026 IPO class raised roughly $15 billion. That is a thin year by any historical standard, and it is the number that actually describes access to public capital for AI-adjacent startups.
The sector mix confirms it. Crunchbase counts energy as the single largest group of issuers, about a quarter of the class:
- Energy: Fervo Energy (geothermal), X-energy, Hadron Energy and Standard Nuclear (small modular reactors)
- Quantum: Quantinuum
- Defense and aerospace: HawkEye 360, York Space Systems
- Equipment and consumer: EquipmentShare, Lime
Notice what is missing. The companies that went public are the ones that power AI data centers, not the ones that build AI software.
Why did SpaceX take 83% of the proceeds?
Because it priced the largest IPO in history. SpaceX raised $75 billion on June 11, 2026, then grew the deal to $85.7 billion after underwriters exercised their option in full, TechCrunch reported. The company closed its first trading day above a $2 trillion valuation.
The AI connection is not incidental. TechCrunch reported that roughly $20 billion of the proceeds went to retiring debt carried by X and xAI, with more earmarked for AI compute infrastructure alongside launch and Starlink spending.
So the largest “tech IPO” of the AI era functioned, in part, as a refinancing vehicle for an AI lab that never went public itself. That is worth sitting with. The public market did not price an AI company. It priced a rocket company that happens to fund one.
What did the Cerebras IPO prove — and then unprove?
Cerebras proved demand exists for AI silicon at IPO. It then spent four months demonstrating how quickly that demand reprices. The stock is now below its first-day close by more than a third, even though revenue more than doubled.
The first-day pop
Cerebras priced 30 million shares at $185 on May 14, 2026, raising $5.5 billion. The stock opened at $385 — a 108% pop — and closed at $311, per TechCrunch. Market capitalization at that close was roughly $66 billion.
The fundamentals underneath were real. Cerebras reported 2025 revenue of $510 million, up 76% year over year, and 2025 net income of $237.8 million, against a loss of about $500 million in 2024.
The four-month round trip
As of September 18, 2026, CBRS closed at $198.37 with a market capitalization of $47.13 billion, according to StockAnalysis data. That is 36% below the first-day close and 29% below the day-one market cap.
Here is the part that should give investors pause. Trailing-twelve-month revenue has climbed to $680.67 million, up 111.7%. Over the same stretch, trailing net income has swung to a loss of $487.24 million.
Revenue doubled and the company went from profitable to deeply unprofitable. That is the cost of scaling AI hardware — wafer commitments, capacity, headcount — showing up on the income statement before the revenue catches it. The 52-week range runs from $160.81 to $386.34. Eleven analysts carry an average 12-month target of $291.64, which implies they think the market has overcorrected. The market has not agreed for four months.
Why did software IPOs disappear in 2026?
Because public markets stopped paying for SaaS. Crunchbase calls enterprise software “essentially a no-show” in the 2026 IPO class, and the comparable multiples explain why: a software company that lists today is valued at roughly two times forward revenue.
No board takes a company public into that.
What the multiples say
Median EV/NTM revenue multiples for public software as of September 18, 2026, per Multiples.vc:
| Category | EV/NTM revenue | EV/NTM EBITDA |
|---|---|---|
| Horizontal SaaS | 2.1x | 9.8x |
| Vertical SaaS | 2.2x | 10.7x |
| Infrastructure SaaS | 3.0x | 12.2x |
Within those medians the spread is brutal. Design and engineering software trades at 3.8x on successful AI integration. Sales automation trades at 1.7x, because generative AI is eating the CRM workflow it sells.
Private AI startups are raising at multiples of a different order entirely — Cognition’s $47 billion round priced at roughly 52x revenue, and Cohere’s $20 billion mark at 83x ARR. A founder comparing 52x in a private round against 2.1x in the public market does not file an S-1. They raise another private round.
Who is still in the private pipeline?
The largest AI companies in the world, all of them still private, all of them raising at valuations no public comparable supports. That is the structural fact the $90 billion headline obscures.
OpenAI has been pushing its listing out while SoftBank absorbs the delay, and reports on its next private mark have diverged by $300 billion. Anthropic’s path is being shaped by a possible $10 billion Nvidia anchor at a $2 trillion valuation.
Neither has to list. Private capital is abundant, cheaper in dilution terms than a discounted IPO, and free of quarterly disclosure. The incentive runs one way.
Why this matters for investors
The AI IPO market in 2026 is a measurement problem disguised as a liquidity event. Public investors cannot buy the assets compounding fastest, and the assets they can buy are priced on a different logic than the private rounds that set AI’s headline valuations.
Three consequences follow.
- Index exposure to AI is indirect. With the leading labs private, public AI exposure runs through infrastructure — chips, power, data centers — rather than model companies. Energy issuers dominating the 2026 class is that thesis in ticker form.
- Private marks are unverified. A 52x or 83x revenue multiple set in a negotiated round has no continuous price discovery behind it. Cerebras is the counterexample that matters: it did face daily pricing, and gave back 36% from the first-day close.
- The exit math is untested. Roughly $510 billion flowed into global startups in H1 2026 alone, per Crunchbase. That capital needs exits. A public market paying 2.1x for software is not currently a plausible destination for it.
The skeptical read: the $90 billion figure is being cited as evidence the IPO window reopened. It is closer to evidence of the opposite. Remove one rocket company and 2026 looks like a drought.
This post is reporting and analysis, not financial advice.
Frequently asked questions
How much did the AI IPO market raise in 2026?
Nearly $90 billion in US venture-backed tech IPO proceeds through mid-September 2026, the second-highest annual total on record, according to Crunchbase.
Which company dominated 2026 IPO proceeds?
SpaceX, at roughly 83% of the total. It raised $75 billion at pricing on June 11, 2026, and $85.7 billion after the greenshoe, closing its first day above a $2 trillion valuation.
How has the Cerebras IPO performed?
Cerebras priced at $185 on May 14, 2026, closed day one at $311, and traded at $198.37 on September 18, 2026 — up about 7% from the IPO price but down 36% from the first-day close.
Why are there so few software IPOs in 2026?
Public software multiples have compressed to roughly 2.1x forward revenue for horizontal SaaS, per Multiples.vc. Companies able to raise privately at far higher multiples have no reason to list at that price.
Are OpenAI and Anthropic going public?
Neither has listed. OpenAI’s IPO has been delayed, and Anthropic’s path reportedly involves a possible $10 billion Nvidia anchor investment at a $2 trillion valuation. No listing date is confirmed for either.
What sectors actually went public in 2026?
Energy led at about a quarter of issuers — Fervo Energy, X-energy, Hadron Energy, Standard Nuclear — alongside quantum (Quantinuum), defense and aerospace (HawkEye 360, York Space Systems), and consumer names including Lime and EquipmentShare.
Is the AI IPO window actually open?
Only for infrastructure and energy. Excluding SpaceX, the 2026 class raised roughly $15 billion combined — a weak year, not a reopened window.
The bottom line
The AI IPO market in 2026 produced a record-adjacent headline number and almost no actual liquidity for AI companies. One rocket launch carried 83% of it. One chipmaker carried 6%, and has since given back more than a third of its first-day value.
What happens next depends on which price wins. If public software multiples stay near 2.1x, the private pipeline keeps compounding and the disclosure gap between private marks and public prices keeps widening. If OpenAI or Anthropic finally lists, the market gets its first genuine read on what an AI lab is worth when it is priced every day rather than every eighteen months.
Until then, the $90 billion is not a signal about AI. It is a signal about SpaceX.
Sources
- Crunchbase News — A Hard Year For Software IPOs (September 16, 2026)
- TechCrunch — SpaceX’s biggest-ever IPO just grew to $85.7B raised
- Axios — SpaceX raises $75 billion in its IPO
- TechCrunch — Cerebras raises $5.5B, then stock pops 108%
- StockAnalysis — Cerebras Systems (CBRS) price and financials
- Multiples.vc — Public Software Valuation Multiples, September 2026
Leave a Reply