Put-Call Ratio (Volume) (30-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

Twist Bioscience Corporation (TWST) had 30-Day Put-Call Ratio (Volume) of 1.9841 for 2026-09-04.

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Figures for 2026-09-04

Volatility Metrics
Historical Volatility (Close-to-Close)	1.0265
Historical Volatility (Parkinson)	0.6428
Implied Volatility (Calls)	0.6958
Implied Volatility (Puts)	0.7013
Implied Volatility (Mean)	0.6985
Put-Call Implied Volatility Ratio	1.0080
Implied Volatility Skew	-0.0080
Option Statistics
Put-Call Ratio (Volume)	1.9841
Put-Call Ratio (Open Interest)	1.2441