Cerebras shares slip below their $185 IPO price after a blockbuster debut

In May, Cerebras Systems had one of the flashiest market debuts of the year. Five months later, its stock trades below the price institutional buyers paid before the opening bell.

The AI chip designer priced its initial public offering at $185 per share. By early October 2026, shares were changing hands between $164 and $177, with the stock recently sitting around $165.

That is a long way down from the $350 opening print. Early buyers who chased the debut are now holding something worth less than half that figure.

From a 68% pop to underwater

Cerebras set its IPO price on May 13, 2026. It sold 30 million shares and raised $5.55 billion in the process.

The deal gave the company a fully diluted valuation of approximately $56.43 billion. It also made the listing the largest US technology IPO of the year up to that point.

Trading under the ticker CBRS on Nasdaq, the stock opened at $350. It finished its first session at $311, a 68% gain over the offer price.

The stock eventually gave back the entire first-day premium and then some. At roughly $165, shares sit about $20 below the $185 offer price.

Timing played a part. The company’s lockup period expired on October 1, 2026, and insider sales worth approximately $84 million lined up with that date.

The numbers behind the hype

Cerebras reported 2025 revenue of $510 million. That is up 76% from $290.3 million in 2024.

The bottom line moved even more dramatically. Net income reached $237.8 million in 2025, compared with a loss of roughly $482 million the year before.

Cerebras holds a multi-year inference capacity agreement with OpenAI and has partnerships with AWS.

The company’s signature product is the wafer-scale engine. Most chipmakers slice a silicon wafer into many small chips. Cerebras instead builds one enormous processor across the wafer itself.

The Nvidia comparison, and its limits

The Motley Fool framed the story with a pointed comparison. It noted that Cerebras is about as big today as Nvidia’s data center business was nearly a decade ago, while arguing that the similarities mostly end there.

Cerebras faces two widely cited concerns. One is customer concentration, meaning a meaningful share of business can depend on a small number of large buyers.

The other is Nvidia itself. Concentration cuts both ways. A deal with a name like OpenAI is a powerful endorsement, but any shift in a major customer’s spending plans can hit the top line hard.

What this means for investors and the AI chip market

Several things are worth watching from here. The next earnings reports will show whether the growth rate seen in 2025 holds up as a public company.

Insider selling is another signal to track now that the lockup has lifted. Continued heavy sales could weigh on sentiment, while restraint might help steady the shares.

Disclosure: This article was edited by Diego Almada Lopez. For more information on how we create and review content, see our Editorial Policy.