At 9:47 a.m. Eastern on Thursday, the ticker symbol CBRS started moving on the Nasdaq. By the closing bell, Cerebras Systems was a $95 billion company, two of its co-founders were billionaires, and Sam Altman had personally cleared $16.5 million on a paper stake. It was the largest U.S. tech IPO since Uber in 2019.

Then there's the disclosure sitting in the prospectus.

Cerebras priced 30 million shares at $185, more than double its original target. The stock opened at $350, touched $386 and tripped a circuit breaker, and closed its first session at $311.07. The offering raised $5.55 billion. It was 20 times oversubscribed.

A 10-year-old company that makes a single AI chip the size of a dinner plate is now worth roughly the same as Lockheed Martin.

The chip itself is real. Cerebras' Wafer-Scale Engine 3 packs 4 trillion transistors, 900,000 cores, and 44 gigabytes of on-chip memory on a single piece of silicon 57 times larger than Nvidia's Blackwell. It runs inference on large language models faster than racks of GPUs because the data never has to leave the wafer. CFO Bob Komin told CNBC the company is "sold out into 2027."

But sold out to whom?

G42, an Abu Dhabi AI conglomerate currently under CFIUS investigation for its historical ties to Huawei, accounted for 24% of 2025 revenue. The Mohamed bin Zayed University of Artificial Intelligence — listed in Cerebras' own prospectus as a "related party" of G42 — accounted for another 62%. Together, two UAE-linked customers generated 86% of the money Cerebras made last year. MBZUAI alone owed Cerebras 77.9% of its accounts receivable as of December 31, 2025.

When the federal government killed Cerebras' first IPO attempt in late 2024, it was over exactly this concentration. Eighteen months later the customer base hasn't diversified. It's been reshuffled between two entities that share leadership.

And the GAAP net income figure that ran in the headlines — $237.8 million in 2025, up from a loss the year before? $363.3 million of it is a one-time, non-cash accounting gain from extinguishing a forward contract tied to G42's original investment. Strip it out and Cerebras posted a non-GAAP net loss of $75.7 million in 2025. That's a 247% deterioration year over year. The GAAP operating loss was $145.9 million.

Even the OpenAI deal — the part of the story everyone is celebrating — comes with a leash. OpenAI's $20 billion chip commitment was paired with a $1 billion working capital loan at 6% interest, secured by warrants for 33.4 million Cerebras shares at a near-zero strike price. At Thursday's open those warrants were worth $11.7 billion. If the Master Relationship Agreement gets terminated for any reason other than OpenAI breaching it first, OpenAI can pull the loan and walk away with the shares.

That's not a vendor relationship. That's a stranglehold.

My Opinion

I'll be blunt: this is the most over-engineered bull case I've seen in AI infrastructure all year. The chip is genuinely impressive, the demand for fast inference is real, and Cerebras has executed where most startups would have collapsed. But $95 billion of market cap built on two UAE customers and a circular OpenAI deal is not a public company — it's a financial instrument designed to make people who already owned it rich.

Sam Altman walked away $16.5 million richer on Thursday from a chipmaker his own company is the single largest customer of. Greg Brockman cleared $14.4 million on the same trade. The 2017 Brockman email entered as evidence in the Musk v. OpenAI trial — where he wrote that exclusive Cerebras access would give OpenAI "an overwhelming hardware advantage over Google" — wasn't just strategy. It was a personal investment thesis with a payout window.

What bugs me most is how completely the UAE concentration disappeared from coverage on Thursday. Reporters wrote about Andrew Feldman's $1.9 billion paper net worth and used CoreWeave's 162% post-IPO run as a comp. They treated the OpenAI deal as a tailwind. They mostly skipped the fact that the next American AI-chip national champion was built on revenue from a single Gulf state, the U.S. government noticed eighteen months ago, and the structural fix is mostly a renaming exercise. Cerebras trades at 130 to 190 times trailing 2025 revenue. Nvidia trades at 26 times. AMD at 21. One of those numbers does not belong in that list, and August earnings will tell us which one.

Author: Yahor Kamarou (Mark) / www.humai.blog / 16 May 2026