Put-Call Ratio (Volume) (120-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

Prothena Corporation plc (PRTA) 120-Day Put-Call Ratio (Volume) data is not available for 2026-06-05.

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Figures for 2026-06-05

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5028
Historical Volatility (Parkinson)	0.5187
Implied Volatility (Calls)	0.7960
Implied Volatility (Puts)	0.5871
Implied Volatility (Mean)	0.6915
Put-Call Implied Volatility Ratio	0.7375
Implied Volatility Skew	0.0310
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	0.7481