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.

ACM Research, Inc. (ACMR) had 120-Day Put-Call Ratio (Volume) of 0.1880 for 2026-10-19.

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Figures for 2026-10-19

Volatility Metrics
Historical Volatility (Close-to-Close)	0.9275
Historical Volatility (Parkinson)	0.7221
Implied Volatility (Calls)	0.7632
Implied Volatility (Puts)	0.7547
Implied Volatility (Mean)	0.7590
Put-Call Implied Volatility Ratio	0.9888
Implied Volatility Skew	0.0251
Option Statistics
Put-Call Ratio (Volume)	0.1880
Put-Call Ratio (Open Interest)	0.4411