Put-Call Ratio (Open Interest) (20-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.

Bio-Rad Laboratories, Inc. (BIO) had 20-Day Put-Call Ratio (Open Interest) of 0.5455 for 2025-09-26.

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Figures for 2025-09-26

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2710
Historical Volatility (Parkinson)	0.2533
Implied Volatility (Calls)	0.3271
Implied Volatility (Puts)	0.3074
Implied Volatility (Mean)	0.3172
Put-Call Implied Volatility Ratio	0.9399
Implied Volatility Skew	0.1044
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.5455