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We saw some big moves in the biotech/healthcare space today. One of the biggest movers was Arrowhead Pharmaceuticals (ARWR). The stock moved up over 40% during the peak of the session, reaching a high of $22.39 before gradually pulling back to around $19 per share. The stock was up due to positive results on a study of it’s ARO-HBV treatment for HBV patients. Here’s a recap of what happened.