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The stock dropped >8% on weaker Bimzelx sales and concerns about upgrade credibility, signaling near-term negative price pressure until clearer evidence of durable growth emerges.
What happened, with direct paths to the underlying reporting
UCB boosted its 2026 earnings outlook, signaling potential profitability gains. However, shares fell more than 8% as investors focused on weaker-than-expected Bimzelx sales and questioned the upgrade's credibility. The disconnect implies near-term volatility until more durable revenue signs emerge.
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