GoKawiilCerebras shares rise 6% after Altman affirms OpenAI partnership
Cerebras Systems' stock gained in premarket trading Monday after OpenAI CEO Sam Altman posted on X calling Cerebras a 'close partner' with 'deep engagement pushing on the frontiers of speed.' The comments follow a 20% drop last week after reports that OpenAI would use Nvidia GPUs rather than Cerebras chips to power GPT-6.1 Sol's 'Ultrafast' mode. Cerebras stock was last up 6.3% at $177 per share, still roughly half its post-IPO high, with market cap near $39 billion versus $95 billion at its May debut.
GoKawiil's interpretation of the reporting above, not reported fact.
The swing shows how sensitive Cerebras' valuation is to perceptions of its relationship with OpenAI, a key customer and partner since its Nasdaq debut in May. Altman's public reassurance suggests OpenAI may be trying to manage investor concern about diversifying its chip suppliers, though the underlying shift toward Nvidia GPUs for a flagship product could still signal reduced reliance on Cerebras hardware for certain workloads. The stock's continued distance from its IPO peak indicates investors remain cautious despite the rebound.
- Cerebras stock rose 6.3% premarket Monday after Altman's social media comments.
- The rally follows a 20% drop tied to OpenAI's use of Nvidia GPUs for GPT-6.1 Sol's Ultrafast mode.
- Cerebras' market cap of about $39 billion remains far below its $95 billion IPO-day valuation.
Source: cnbc.com — Sawdah Bhaimiya, 2026-10-05
Published there as: “Cerebras stock climbs 6% after Sam Altman calls the chipmaker a 'close partner'”
Read the original report → The summary and analysis above are GoKawiil's own, written from reporting by the source above. Facts and quotes belong to the original publisher.