Cerebras shares drop sharply after the company issues a full-year margin forecast that investors view as disappointing. Multiple outlets report the stock falls by about 14% in trading following the guidance update. The decline reflects concerns over the expected profitability or margin level for the rest of the year, rather than a change in the company’s broader outlook or plans that sources explicitly cite. In coverage, the emphasis is on the new margin forecast and the market reaction to it. The articles present the move as a near-term repricing of expectations, with traders reacting immediately to the guidance figure and associated implications for earnings potential. While each report focuses primarily on the same share-price drop and forecast disappointment, they do not present materially different details about the underlying drivers beyond the margin guidance. No additional context on specific contract wins, product milestones, or restructuring is highlighted in the provided summaries. Overall, the reporting centers on the guidance update for full-year margins and the resulting negative market sentiment.