Put-Call Ratio (Open Interest) (90-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

CRISPR Therapeutics AG (CRSP) had 90-Day Put-Call Ratio (Open Interest) of 0.4983 for 2026-10-16.

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Figures for 2026-10-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5206
Historical Volatility (Parkinson)	0.4636
Implied Volatility (Calls)	0.5441
Implied Volatility (Puts)	0.5427
Implied Volatility (Mean)	0.5434
Put-Call Implied Volatility Ratio	0.9975
Implied Volatility Skew	0.0125
Option Statistics
Put-Call Ratio (Volume)	0.7846
Put-Call Ratio (Open Interest)	0.4983