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.

CRISPR Therapeutics AG (CRSP) had 30-Day Put-Call Ratio (Volume) of 0.9773 for 2026-04-21.

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Figures for 2026-04-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4834
Historical Volatility (Parkinson)	0.4471
Implied Volatility (Calls)	0.6952
Implied Volatility (Puts)	0.6114
Implied Volatility (Mean)	0.6533
Put-Call Implied Volatility Ratio	0.8795
Implied Volatility Skew	0.0913
Option Statistics
Put-Call Ratio (Volume)	0.9773
Put-Call Ratio (Open Interest)	0.2504