Alnylam Pharmaceuticals (ALNY) Stock: Nasdaq-100 Entry, Amvuttra Momentum, Analyst Targets and Key Risks to Know Before the Dec. 22, 2025 Market Open
Alnylam Pharmaceuticals joins the Nasdaq-100 before the U.S. market opens Dec. 22, prompting index-tracking funds to adjust positions. Shares last closed at $400.23. The company’s drug Amvuttra recently secured routine NHS use in England and Health Canada approval for ATTR cardiomyopathy. Alnylam also announced a $250 million manufacturing expansion and new FDA recognition for its technology platform.