Cerebras Systems reported a record core revenue of $191.3 million for its first quarter as a public company, yet its shares plunged roughly 11% in after-hours trading on Tuesday. The market reaction followed the AI chipmaker’s projection of a sharp contraction in its upcoming second-quarter profit margins.
Key Details
- Q1 2026 core revenue hit $191.3 million, an increase of 92% year-over-year.
- GAAP net losses narrowed to $14.0 million from $23.9 million in the previous year.
- Second-quarter gross margin guidance fell to a range of 36% to 38%, down from 46.5%.
- A unique IPO lock-up expiration allows insiders to sell up to 30 million shares immediately following this report.
Cerebras beat the analyst consensus of $181.2 million for the quarter, but the positive top-line growth failed to stabilize the stock. Shares dropped from a regular-session close of $226.72 to approximately $202.45. According to a press release covering the official Q1 2026 figures, the lowered Q2 margin guidance heavily influenced the sell-off.
The financial results mark the company’s first public disclosure since its May initial public offering. The $6.4 billion offering currently stands as the largest semiconductor IPO in history. To maintain its valuation, which sits at a 64x to 70x forward revenue multiple, Cerebras depends heavily on deploying capacity for its $20 billion multi-year inference compute partnership with OpenAI and Amazon Web Services.
The high valuation puts pressure on the company to perform against industry leader Nvidia, which trades near a 14.4x forward revenue multiple with dominant margins. The market reaction surrounding the after-hours stock drop highlights investor anxiety over whether Cerebras can sustain its growth trajectory against established competitors.
How the Unusual Lock-Up Expiry Compounds the Sell-Off
The immediate 11% drop in share price is not driven entirely by the Q2 margin forecast. Cerebras structured its initial public offering with a highly unconventional lock-up period. Instead of enforcing the standard 180-day trading restriction for company insiders, the terms tied the expiration directly to the date of this specific first-quarter earnings release.
This structural decision legally permits early investors and executives to sell up to 30 million shares onto the open market immediately. The sudden influx of available equity liquidity, combined with the lowered profit guidance, creates intense downward pressure on the stock price heading into Wednesday’s trading session.