Put-Call Ratio (Volume) (20-Day)

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

BioCryst Pharmaceuticals, Inc. (BCRX) had 20-Day Put-Call Ratio (Volume) of 0.0333 for 2026-10-19.

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Figures for 2026-10-19

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4211
Historical Volatility (Parkinson)	0.3642
Implied Volatility (Calls)	0.6041
Implied Volatility (Puts)	0.5036
Implied Volatility (Mean)	0.5539
Put-Call Implied Volatility Ratio	0.8336
Implied Volatility Skew	0.1939
Option Statistics
Put-Call Ratio (Volume)	0.0333
Put-Call Ratio (Open Interest)	0.0676