Cerebras closed Friday near $280 after falling roughly 10% on Day 2, snapping the Day 1 surge that had carried CBRS above $300. [1] The semiconductor index dropped about 4% the same session. None of that edited the prospectus.

The paper's Friday brief on Day 2 as the test of whether AI demand can ignore UAE concentration made the structural point: the company's own S-1 disclosed that two UAE-linked entities, principally tied to G42, accounted for roughly 86% of 2025 revenue. That disclosure was printed before pricing and remains printed today. [2]

The stock can fall on a soft Friday for semis. It can rise on the next OpenAI infrastructure headline. Neither motion rewrites the customer-concentration paragraph in the Risk Factors section. CNBC's pricing piece noted the disclosure in its initial coverage. [3] Futurum's S-1 teardown built its analysis around the same line. [2]

The disclosure is durable because it is structural. Export-control regimes, CFIUS history, UAE procurement policy, and US-China-Gulf diplomacy all sit upstream of those two customers. Sentiment can reprice the multiple. It cannot reprice the customer map.

That is the brief. A bad day is news. The prospectus is the file. Until a customer-diversification announcement edits the disclosure, the durable Cerebras fact is the one the company itself printed before the bell.

-- THEO KAPLAN, San Francisco