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Xenon Pharmaceuticals, Steel Dynamics, Nucor And Other Big Stocks Moving Lower In Friday’s Pre-Market Session

Sep 18, 2026 · 08:01 AM ET· updated 2h ago
Xenon Pharmaceuticals, Steel Dynamics, Nucor And Other Big Stocks Moving Lower In Friday’s Pre-Market Session

U.S. futures rise, but Xenon plunges 27.6% after pausing psychiatry trial enrollment over neuropsychiatric adverse events; other stocks also fall

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Why It Matters

Xenon Pharmaceuticals stopped enrolling patients in a psychiatry medicine trial. This happened because some patients had serious mental health side effects.

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Source: Benzinga · Read the original report at the publisher. Headline and figures shown for context; data may be delayed.

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