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 0.5860 for 2026-09-01.

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Figures for 2026-09-01

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6131
Historical Volatility (Parkinson)	0.6738
Implied Volatility (Calls)	0.7126
Implied Volatility (Puts)	0.7724
Implied Volatility (Mean)	0.7425
Put-Call Implied Volatility Ratio	1.0840
Implied Volatility Skew	0.0122
Option Statistics
Put-Call Ratio (Volume)	0.5860
Put-Call Ratio (Open Interest)	0.8397