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.

Perma-Fix Environmental Services, Inc. (PESI) had 20-Day Put-Call Ratio (Open Interest) of 0.5946 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4289
Historical Volatility (Parkinson)	0.4788
Implied Volatility (Calls)	0.5790
Implied Volatility (Puts)	0.4481
Implied Volatility (Mean)	0.5135
Put-Call Implied Volatility Ratio	0.7738
Implied Volatility Skew	0.1160
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.5946