Put-Call Ratio (Volume) (90-Day)

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

Caribou Biosciences, Inc. (CRBU) had 90-Day Put-Call Ratio (Volume) of 0.1956 for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6434
Historical Volatility (Parkinson)	0.7331
Implied Volatility (Calls)	1.0707
Implied Volatility (Puts)	1.2133
Implied Volatility (Mean)	1.1420
Put-Call Implied Volatility Ratio	1.1332
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.1956
Put-Call Ratio (Open Interest)	0.3165