Here's Why Arrowhead Pharmaceuticals Surged 31.9% in May

Shares of Arrowhead Pharmaceuticals (NASDAQ:ARWR) rose nearly 32% last month, according to data provided by S&P Global Market Intelligence. The biopharma company announced a business update for the fiscal second quarter of 2019. It appears to have been a busy three months.

The clinical-stage company began dosing patients in two phase 1 studies, received the green light from regulators to begin an important phase 2/3 trial, and reported promising interim data from an ongoing trial being conducted by a subsidiary of partner Johnson & Johnson.