Cerebras Stock Falls as Margins Trail AI Chip Rivals

Cerebras Systems (CBRS) issued its first earnings report as a public company Tuesday and immediately flagged a meaningful compression in gross margins for the remainder of 2026, sending shares down more than 14% in premarket trading Wednesday. The Cerebras Systems gross margin forecast for the full year came in well below the figures posted in Q1 and far below those of established chip peers.

At a Glance

• Full year 2026 adjusted gross margin guided to 38% to 41%, down from 47% in Q1 2025
• Q1 revenue of $193.4 million, nearly double the $99.5 million reported a year earlier
• Q2 adjusted sales guided to $194 million, above the $174.34 million consensus estimate
• Q1 adjusted net loss of $2.5 million, far narrower than the $36.75 million loss analysts expected
• Shares fell over 14% in premarket trading after the after-hours Tuesday release

Margin Compression: The Core Problem

The numbers tell a straightforward story. Cerebras posted an adjusted gross margin of 47% in Q1, then guided Q2 to 36% to 38% and the full year to 38% to 41%. Both ranges come in above the analyst consensus of 29.58%, which means the company is beating Street expectations, but the sequential decline is hard to ignore.

For context, Nvidia's gross margins sit in the mid-70% range, and Advanced Micro Devices operates in the mid-50% range. Cerebras at the midpoint of its full year guidance, roughly 39.5%, is about 15 percentage points below AMD and more than 30 points below Nvidia. That gap matters because gross margin is the clearest signal of pricing power and manufacturing efficiency in the semiconductor business.

Ben Bajarin, CEO of technology consulting firm Creative Strategies, pointed to the company's chip architecture as a structural constraint. Cerebras builds some of the largest chips in the industry, and large chips are inherently harder and more expensive to manufacture at acceptable yield rates. That difficulty is showing up directly in the margin profile.

A Temporary Cost: Renting Its Own Systems Back

Chief Financial Officer Bob Komin added another layer to the margin story on the post-earnings call. Cerebras is currently renting its own systems back from an existing client to bridge short-term demand while it builds out additional data center capacity. The arrangement creates an extra cost layer that Komin described as a temporary drag on cloud and services margins.

His exact framing: "The additional cost of renting third-party capacity will depress core cloud and other services margin temporarily from current levels." Komin also stated a long-term gross margin target of 60%, which would put Cerebras in genuinely competitive territory with mid-tier chip companies, though reaching that figure will depend on resolving both the manufacturing challenge and the current capacity crunch.

Revenue Growth and the OpenAI Dependency

On the top line, the picture is considerably cleaner. Q1 revenue came in at $193.4 million, up from $99.5 million in Q1 2024, representing growth of roughly 94% year over year. Q2 guidance of $194 million also clears the $174.34 million consensus estimate from LSEG data, suggesting the revenue ramp is holding.

Much of that trajectory is tied to OpenAI. Cerebras has a $20 billion multi-year agreement under which OpenAI will deploy 750 megawatts of Cerebras chips, anchoring the company's near-term demand outlook. The relationship gives Cerebras a high-visibility revenue stream but also creates concentration risk: a company whose growth is this closely linked to a single customer faces meaningful downside if that relationship shifts.

Cerebras focuses on inference workloads, the compute required when AI models respond to queries rather than during training. Inference is a high-volume, cost-sensitive segment where speed and efficiency per watt matter. The company's large-chip architecture is designed to excel there, though the manufacturing cost pressures noted above complicate the unit economics.

Geographic Expansion and IPO Context

CEO Andrew Feldman disclosed early-stage discussions for data center deployments in Israel, the UAE, Australia, Singapore, India and Indonesia. Expanding internationally could help the company diversify its customer base beyond the current OpenAI-heavy concentration, though early-stage discussions translate to booked revenue on a timeline that remains uncertain.

Cerebras raised $5.55 billion in its IPO last month, giving it capital to fund the data center buildout Komin referenced. The scale of that raise reflects investor appetite for inference-focused chip companies, but Tuesday's margin guidance put that enthusiasm to an immediate test.

Comparative Margin Table

Frequently Asked Questions

Why are Cerebras gross margins declining from Q1 to the rest of 2026?

Two factors are driving the compression. First, the company's very large chip design is difficult to manufacture at high yields, which raises production costs. Second, Cerebras is temporarily renting its own systems back from a client to meet demand while it expands data center capacity, adding costs that weigh on services margins.

How does Cerebras compare to Nvidia on gross margin?

Nvidia operates in the mid-70% gross margin range. Cerebras guided its full year 2026 adjusted gross margin to 38% to 41%, a gap of roughly 30 to 35 percentage points. Cerebras has set a long-term target of 60%, which would narrow but not close that gap.

What is Cerebras' relationship with OpenAI?

Cerebras holds a $20 billion multi-year deal with OpenAI, under which the ChatGPT developer will deploy 750 megawatts of Cerebras chips. The agreement underpins much of the company's near-term revenue growth but also creates significant customer concentration.

Did Cerebras beat or miss estimates in Q1?

The company beat on both revenue and the bottom line. Revenue of $193.4 million compared favorably to the year-ago figure of $99.5 million, and the adjusted net loss of $2.5 million came in far narrower than the $36.75 million loss analysts had projected.

What the Margin Path Implies

The market's 14% premarket reaction reflects a specific concern: a chip company growing revenue at nearly 100% year over year but guiding gross margins down sequentially, with full year figures well below established peers, is signaling that scaling is still expensive. The Q1 beat on the net loss line and the above-consensus Q2 revenue guide provide some offset, but gross margin is the metric that determines long-term earnings power in semiconductors. The 60% long-term target gives investors a destination, though the path from 39% to 60% runs through manufacturing improvements and resolved capacity constraints that have no firm timeline yet.