Put-Call Ratio (Volume) (90-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 90-Day Put-Call Ratio (Volume) of 2.2013 for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.8194
Historical Volatility (Parkinson)	0.6298
Implied Volatility (Calls)	1.0216
Implied Volatility (Puts)	1.0212
Implied Volatility (Mean)	1.0214
Put-Call Implied Volatility Ratio	0.9996
Implied Volatility Skew	0.0350
Option Statistics
Put-Call Ratio (Volume)	2.2013
Put-Call Ratio (Open Interest)	0.3682