XENE ▼ -1.8% - Xenon Pharmaceuticals Inc. $XENE - Xenon to Present at TD Cowen Novel Mechanisms in Neuropsychiatry & Epilepsy Summit Xenon Pharmaceuticals fell 1.8% today following news that the company will present at the TD Cowen Novel Mechanisms in Neuropsychiatry & Epilepsy Summit. The decline occurred despite the conference presentation opportunity, suggesting investors may have already priced in expectations for any updates or that broader market conditions outweighed the event announcement. 21-SEP-2026 04:01 PM ET