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.

Amtech Systems, Inc. (ASYS) had 180-Day Put-Call Ratio (Volume) of 0.0000 for 2026-04-21.

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Figures for 2026-04-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.8768
Historical Volatility (Parkinson)	0.7226
Implied Volatility (Calls)	1.0008
Implied Volatility (Puts)	0.9940
Implied Volatility (Mean)	0.9974
Put-Call Implied Volatility Ratio	0.9932
Implied Volatility Skew	-0.0086
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.0445