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.

Protagonist Therapeutics, Inc. (PTGX) 90-Day Put-Call Ratio (Volume) data is not available for 2026-05-22.

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Figures for 2026-05-22

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4413
Historical Volatility (Parkinson)	0.4505
Implied Volatility (Calls)	0.4647
Implied Volatility (Puts)	0.4688
Implied Volatility (Mean)	0.4667
Put-Call Implied Volatility Ratio	1.0089
Implied Volatility Skew	0.0549
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	0.3362