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3 Biotech Stocks Put Traders Are Targeting Today

By Laura McCandless | October 01, 2026, 11:44 AM

Nektar Therapeutics (NASDAQ:NKTR), Quantum-Si Inc (NASDAQ:QSI), and Pacific Biosciences of California Inc (NASDAQ:PACB) are all attracting elevated options activity today, as biotech stocks make volatile moves.

NKTR is down 19.1% at $48.97, after the company presented long-term Phase 2b data for its alopecia areata and atopic dermatitis treatment. So far, 7,662 options have changed hands, 4.3 times the average intraday amount. Options traders are leaning bearish, with a negative net option delta volume of roughly 6,000 shares.

QSI is up 25.2% at $1.34, after updates showed its next-generation Proteus platform outperforming its current system across several metrics. Options volume is running at 6 times the typical intraday pace, though traders are leaning bearish, with a negative net option delta volume of roughly 3,000 shares.

PACB is up 0.9% at $2.39, after surging nearly 30% yesterday on EpiSign's launch of EpiSign METRIC 5-base for its HiFi sequencing platform. Options volume is running at 1.6 times the average intraday pace, while traders are leaning bearish, with a negative net option delta volume of roughly 27,000 shares.

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