Why is Vanda Pharmaceuticals stock surging today?
Vanda Pharmaceuticals (VNDA) stock rose 12% in after-hours trading to $5.63 after reporting positive phase III results for its Hetlioz treatment in delayed sleep-wake phase disorder. The trial met its primary endpoint, and the company plans to discuss the data with the FDA. If approved, Hetlioz would be the first FDA-approved medicine for this condition.


