Alnylam Pharmaceuticals (ALNY) Stock on Dec. 22, 2025: Nasdaq-100 Debut, AMVUTTRA Momentum, Analyst Price Targets and the 2026 Outlook
Dec. 22, 2025 — Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY) is stepping into a new tier of market visibility today as its Nasdaq-100 Index membership takes effect ahead of the opening bell—an index catalyst that can influence near-term trading and broaden long-term institutional ownership. Nasdaq+1 ALNY was trading around $405.60 on Dec. 22 (time-stamped 16:37 UTC), up about 1.3% versus the prior close—an incremental move that nonetheless lands in the middle of a busier-than-usual news cycle for the RNAi leader. Below is a comprehensive roundup of the current news, forecasts, and market analysis circulating through Dec. 22, 2025, and what investors