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.

Onto Innovation Inc. (ONTO) had 30-Day Put-Call Ratio (Volume) of 4.4410 for 2025-05-30.

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Figures for 2025-05-30

Volatility Metrics
Historical Volatility (Close-to-Close)	1.3698
Historical Volatility (Parkinson)	0.5054
Implied Volatility (Calls)	0.5203
Implied Volatility (Puts)	0.5235
Implied Volatility (Mean)	0.5219
Put-Call Implied Volatility Ratio	1.0061
Implied Volatility Skew	0.0812
Option Statistics
Put-Call Ratio (Volume)	4.4410
Put-Call Ratio (Open Interest)	0.4987