Put-Call Ratio (Volume) (10-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 10-Day Put-Call Ratio (Volume) of 0.5128 for 2026-10-19.

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Figures for 2026-10-19

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6193
Historical Volatility (Parkinson)	0.5791
Implied Volatility (Calls)	0.7857
Implied Volatility (Puts)	0.7598
Implied Volatility (Mean)	0.7728
Put-Call Implied Volatility Ratio	0.9670
Implied Volatility Skew	0.0253
Option Statistics
Put-Call Ratio (Volume)	0.5128
Put-Call Ratio (Open Interest)	0.7768