Put-Call Ratio (Volume) (30-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 30-Day Put-Call Ratio (Volume) of 0.2991 for 2026-04-17.

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Figures for 2026-04-17

Volatility Metrics
Historical Volatility (Close-to-Close)	0.7054
Historical Volatility (Parkinson)	0.5695
Implied Volatility (Calls)	0.8516
Implied Volatility (Puts)	0.8586
Implied Volatility (Mean)	0.8551
Put-Call Implied Volatility Ratio	1.0082
Implied Volatility Skew	0.0276
Option Statistics
Put-Call Ratio (Volume)	0.2991
Put-Call Ratio (Open Interest)	0.3366