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.

Caribou Biosciences, Inc. (CRBU) had 180-Day Put-Call Ratio (Volume) of 0.0000 for 2026-06-04.

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Figures for 2026-06-04

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6987
Historical Volatility (Parkinson)	0.6813
Implied Volatility (Calls)	1.2260
Implied Volatility (Puts)	0.9587
Implied Volatility (Mean)	1.0923
Put-Call Implied Volatility Ratio	0.7819
Implied Volatility Skew	0.0435
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.1884