​Why did Cerebras Systems stock fall despite higher 2026 guidance?

Cerebras Systems shares fell sharply after the AI-chip maker’s second-quarter results, reversing a recent rally. The stock dropped around 12%-14% as investors focused on revenue and profitability concerns. (Sources: TS2 Tech, Tekedia, The Motley Fool, Reuters)

Cerebras reported Q2 GAAP revenue of about $180.1 million, up more than 70% year on year. Its cloud business delivered particularly strong growth, with GAAP cloud revenue rising 281%.

Despite rapid revenue growth, Cerebras reported a $450.5 million quarterly net loss. GAAP gross profit also declined 20%, highlighting concerns over the company’s path to sustainable profitability.

Cerebras increased its 2026 core revenue outlook to $880 million-$890 million, from the previous $855 million-$865 million range. It also raised its adjusted gross-margin forecast to 41%-43%.

The strong outlook failed to offset concerns over the latest revenue performance, hardware sales and profitability. Hardware revenue fell to $54.1 million from $70.3 million a year earlier, as investors weigh Cerebras’ ability to compete with Nvidia in the fast-growing AI accelerator market.