Put-Call Ratio (Volume) (120-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 120-Day Put-Call Ratio (Volume) of 0.0069 for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.9265
Historical Volatility (Parkinson)	0.8527
Implied Volatility (Calls)	1.1547
Implied Volatility (Puts)	1.0904
Implied Volatility (Mean)	1.1226
Put-Call Implied Volatility Ratio	0.9443
Implied Volatility Skew	0.0150
Option Statistics
Put-Call Ratio (Volume)	0.0069
Put-Call Ratio (Open Interest)	0.1905