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.

BioLife Solutions, Inc. (BLFS) had 180-Day Put-Call Ratio (Volume) of 1.0000 for 2026-04-21.

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Figures for 2026-04-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4501
Historical Volatility (Parkinson)	0.4354
Implied Volatility (Calls)	0.5902
Implied Volatility (Puts)	0.6271
Implied Volatility (Mean)	0.6087
Put-Call Implied Volatility Ratio	1.0627
Implied Volatility Skew	0.0788
Option Statistics
Put-Call Ratio (Volume)	1.0000
Put-Call Ratio (Open Interest)	0.2222