Biotech Stocks Today: FDA Shifts, ASH 2025 Winners and Market Close Recap (December 9, 2025)
Biotech stocks fell Tuesday as the iShares Nasdaq Biotechnology ETF closed at $167, down 1.6%, and the SPDR S&P Biotech ETF dropped 1.8%, despite FDA actions and new clinical data. Senti Bio shares plunged over 30% after its AML cell therapy received RMAT designation and posted 50% response rates in early trial data. The broader market was flat.
