Baron Opportunity Fund, in their Q1 2021 investor letter, mentioned Arrowhead Pharmaceuticals, Inc. (NASDAQ: ARWR ), and shared their insights on the company. Arrowhead Pharmaceuticals, Inc. is a Pasadena, California-based biopharmaceutical company that currently has a $7.5 billion market capitalization. Since the beginning of the year, ARWR delivered a -5.17% return, while its 12-month gains are up by 113%. As of April 30, 2021, the stock closed at $72.76 per share.