Put-Call Ratio (Volume) (150-Day)

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

Fuel Tech, Inc. (FTEK) had 150-Day Put-Call Ratio (Volume) of 0.0000 for 2026-07-21.

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Figures for 2026-07-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.7692
Historical Volatility (Parkinson)	0.7531
Implied Volatility (Calls)	1.7949
Implied Volatility (Puts)	1.2255
Implied Volatility (Mean)	1.5102
Put-Call Implied Volatility Ratio	0.6827
Implied Volatility Skew	0.4208
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.0978