Cerebras Stock Craters Nearly 20% After Debut Earnings Reveal Shrinking Margins

A Blockbuster IPO Meets a Brutal Reality Check

Cerebras Systems had everything going for it on May 14, 2026 — the largest U.S. technology IPO since Uber, a wafer-scale AI chip that Nvidia cannot replicate, contracts with OpenAI and AWS, and a $24.6 billion pile of contracted revenue. The stock opened on Nasdaq at $350, nearly double its IPO price. Then came earnings season.

Cerebras CEO Andrew Feldman said that investors "misunderstood" the AI chipmaker's margin guidance, as shares slid almost 20% after the company reported results for the first time since going public. The drop was swift and steep, erasing weeks of post-IPO momentum in a matter of hours and raising a fundamental question about the company's path to profitability.

Strong Revenue Growth Wasn't Enough

Cerebras saw sales nearly double in the quarter, reaching a record $193.4 million. It also came out with rosy 2026 sales projections — 69% year-over-year growth, blowing past analysts' estimates. On the surface, those are the kinds of numbers a newly public AI company dreams of posting.

The maker of semiconductors for AI narrowed its first-quarter net loss to $0.22 per share, but it missed consensus forecasts calling for a loss of $0.16 per share. That earnings miss stung, but it was the margin outlook that truly rattled investors. Management guided Q2 2026 adjusted gross margin to a range of 36%–38%, a steep drop from the 47% recorded in Q1, with the compression driven by temporary costs tied to renting third-party data center capacity while the company builds out its own facilities.

Cerebras' 47% gross margin already falls well below that of industry leader Nvidia, which reported a 74.9% margin in its first quarter, while Advanced Micro Devices sits somewhere in the mid-50% range. A further drop into the mid-30s only deepened investor anxiety about whether Cerebras can ever close that gap.

The CEO Pushes Back — and Explains the Squeeze

To manage some of these constraints, CEO Andrew Feldman said that for the rest of 2026, Cerebras has decided to temporarily rent some of its own systems back from an "existing customer" while the company works to "aggressively build out and deploy" its own data center capacity. In other words, the margin hit is, at least in management's telling, a growing pain — not a structural flaw.

Analysts at Mizuho and Wedbush raised their estimates following Cerebras' earnings call. Mizuho analyst Vijay Rakesh noted that gross margins could temporarily dip into the low-30% range through FY2026 as this leaseback dynamic plays out, before recovering meaningfully as Cerebras builds its own data center footprint — with a long-term target for the Cloud and Services segment of 60% gross margin in FY2027.

A $20 Billion Deal and the Weight of Expectations

During the first quarter, Cerebras said its chips will go inside Amazon Web Services' data centers, and it announced a deal worth over $20 billion to supply OpenAI with computing power. Those are marquee customer wins by any measure. But they also concentrate enormous execution risk on a company that is still less than two months old as a public entity.

The size of the OpenAI contract dwarfs the firm's existing revenue, meaning that while Cerebras has other major clients, it's still highly reliant on one key customer — and that customer is running almost unfathomable losses for the foreseeable future. Management also said on the earnings call that meaningful revenue contribution from the AWS deal is not expected until 2027.

The central question now is whether the margin squeeze is a temporary scaling cost or a structural ceiling for non-Nvidia AI inference chips. If Cerebras can bring capacity online quickly, keep OpenAI and AWS engaged, and show that losses narrow as utilization rises, the first-earnings selloff will look like the market doing what it often does after an IPO pop — forcing the story back down to numbers. If margins stay under pressure while revenue grows, the stock will be a much more difficult argument. For now, Cerebras has the customers and the technology. The next test is proving it can make money from both.