Put-Call Ratio (Volume) (180-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 180-Day Put-Call Ratio (Volume) of 0.2823 for 2026-01-20.

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Figures for 2026-01-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5525
Historical Volatility (Parkinson)	0.5487
Implied Volatility (Calls)	0.6157
Implied Volatility (Puts)	0.6068
Implied Volatility (Mean)	0.6113
Put-Call Implied Volatility Ratio	0.9857
Implied Volatility Skew	0.0004
Option Statistics
Put-Call Ratio (Volume)	0.2823
Put-Call Ratio (Open Interest)	0.9806