Put-Call Ratio (Volume) (20-Day)

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

Perma-Fix Environmental Services, Inc. (PESI) had 20-Day Put-Call Ratio (Volume) of 0.3086 for 2026-08-20.

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Figures for 2026-08-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6886
Historical Volatility (Parkinson)	0.7141
Implied Volatility (Calls)	1.6264
Implied Volatility (Puts)	1.0840
Implied Volatility (Mean)	1.3552
Put-Call Implied Volatility Ratio	0.6665
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.3086
Put-Call Ratio (Open Interest)	0.5278