BillionToOne (BLLN) stock slides 4% in thin year-end trade as investors look to January catalysts

Shares of BillionToOne fell about 4% on Wednesday, sliding $3.49 to $81.61 in afternoon trading. The stock has traded between $81.25 and $89.36, with about 243,000 shares changing hands.

Biotechnology · NASDAQ:BLLN · Stock Market
Praxis Precision Medicines stock jumps after FDA Breakthrough Therapy tag for tremor drug, BTIG lifts target

Praxis Precision Medicines stock jumps after FDA Breakthrough Therapy tag for tremor drug, BTIG lifts target

Praxis Precision Medicines Inc shares rose 13.25% on Monday to close at $304.58, after the U.S. Food and Drug Administration granted Breakthrough Therapy Designation for its essential tremor candidate ulixacaltamide, a filing showed. The stock opened at $317.72 and traded between $298 and $317.72, and was down about 1% in after-hours trading. StockAnalysis+2SEC+2
30 December 2025
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Ultragenyx stock sinks 42% after Phase 3 setrusumab miss; what RARE investors watch nextNEW YORK, December 29, 2025, 23:21 ET — Market closed

Ultragenyx stock sinks 42% after Phase 3 setrusumab miss; what RARE investors watch nextNEW YORK, December 29, 2025, 23:21 ET — Market closed

Ultragenyx Pharmaceutical Inc shares slid on Monday after the company said two late-stage studies of setrusumab for osteogenesis imperfecta missed their primary fracture-reduction goal, prompting plans for significant expense reductions. “We are surprised and disappointed by these results,” Chief Executive Emil Kakkis said. Shares last traded down 42.3% at $19.72 after the close, versus a prior close of $34.19, after swinging between $34.50 and $17.76 on volume of about 21.7 million shares. Stock Titan
30 December 2025
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Regencell Bioscience Holdings Limited (NASDAQ: RGC) Stock: Shares Slide Into the Weekend After a 14% Drop—What to Watch Before Monday’s Open

Regencell Bioscience Holdings Limited (NASDAQ: RGC) Stock: Shares Slide Into the Weekend After a 14% Drop—What to Watch Before Monday’s Open

Regencell Bioscience Holdings Limited heads into the weekend with traders focused on one thing: volatility. RGC stock finished the last regular session sharply lower, while the broader market logged weekly gains in a quiet, holiday-shortened week—setting up a potentially jumpy start to the next session when U.S. equities reopen on Monday, Dec. 29. Investopedia
28 December 2025
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CRISPR Therapeutics AG (CRSP) Stock: ARK Invest Adds Shares as Wall Street Weighs Zugo‑cel Data, Insider Sale, and 2026 Catalysts

CRISPR Therapeutics AG (CRSP) Stock: ARK Invest Adds Shares as Wall Street Weighs Zugo‑cel Data, Insider Sale, and 2026 Catalysts

CRISPR Therapeutics AG heads into the final trading stretch of 2025 with investors balancing two forces that often define biotech stocks: headline-driven momentum and long-duration fundamental risk. The stock finished the most recent regular session at $55.08, down 2.87%, after trading between $56.54 and $53.76. In after-hours trading, CRSP was last shown around $55.24 late Friday evening. StockAnalysis
27 December 2025
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Zai Lab Limited Stock (NASDAQ: ZLAB) Today: Pre‑Market Watchlist After China’s COBENFY Approval, NRDL Renewals, and Fresh Pipeline Catalysts

Zai Lab Limited Stock (NASDAQ: ZLAB) Today: Pre‑Market Watchlist After China’s COBENFY Approval, NRDL Renewals, and Fresh Pipeline Catalysts

That timing matters today because Zai Lab Limited is entering the session with multiple company-specific catalysts on the board—most notably China’s approval of COBENFY for schizophrenia, plus updates tied to China’s National Reimbursement Drug List and progress in a key oncology program. Business Wire
26 December 2025
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