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.

PDF Solutions, Inc. (PDFS) had 90-Day Put-Call Ratio (Volume) of 0.2857 for 2026-06-05.

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Figures for 2026-06-05

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6844
Historical Volatility (Parkinson)	0.6184
Implied Volatility (Calls)	0.8242
Implied Volatility (Puts)	0.6814
Implied Volatility (Mean)	0.7528
Put-Call Implied Volatility Ratio	0.8267
Implied Volatility Skew	0.0256
Option Statistics
Put-Call Ratio (Volume)	0.2857
Put-Call Ratio (Open Interest)	0.2743