Cerebras raises $5.55B in biggest US IPO of 2026
What's the deal? Cerebras Systems has raised $5.55 billion in its IPO, pricing at $185 per share — well above its marketed range of $150 to $160. The listing values the AI chipmaker at roughly $40 billion, up from an $8.1 billion private valuation in September. It is the largest US IPO of 2026 so far.
The offering was more than 20 times oversubscribed. Cerebras will trade on the Nasdaq under the ticker CBRS.
Why now? The IPO arrives amid a chip stock rally driven by surging demand for AI computing infrastructure. Nvidia's market capitalisation has hit $5.5 trillion, and Broadcom crossed $2 trillion in April. Cerebras itself turned profitable in 2025, posting $87.9 million in net income on $510 million in revenue — up 76% year-on-year.
Recent deals have boosted the company's profile. OpenAI signed a $20 billion agreement to deploy 750 megawatts of Cerebras chips and extended it a $1 billion working capital loan. Additional partnerships with Amazon Web Services, Meta, Mistral AI, Cognition, and Windsurf help diversify its customer base.
What could go wrong? Customer concentration is the biggest risk. G42 and Mohamed bin Zayed University of Artificial Intelligence together accounted for 86% of Cerebras' 2025 revenue. Manufacturing is another challenge: its dinner-plate-sized wafer-scale chips are harder to produce than standard processors, though the company says its architecture can work around silicon defects.
Nvidia still controls roughly 80% of the AI processor market. Arm and SoftBankDealroom has a profile for this one. Try Dealroom → made a last-minute approach to acquire Cerebras weeks before the IPO — a sign of how strategic and contested this space has become.
The signal: Cerebras' listing kicks off what could be a landmark year for AI IPOs, ahead of potential SpaceX, OpenAI, and AnthropicDealroom has a profile for this one. Try Dealroom → debuts. The $40 billion valuation — nearly five times its September private round — signals that public market investors are willing to pay a steep premium for companies building the physical layer of AI.
Founded a decade ago by AMDDealroom has a profile for this one. Try Dealroom → executives, Cerebras is now the highest-profile challenger to Nvidia's dominance. Its bet: that wafer-scale chips are better suited to AI inference than networks of smaller GPUs. The public market will now put that thesis to the test.
Sources:
TechCrunch
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Bloomberg
Wall Street Journal
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