Put-Call Ratio (Volume) (150-Day)

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

Prothena Corporation plc (PRTA) had 150-Day Put-Call Ratio (Volume) of 0.0000 for 2026-06-04.

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Figures for 2026-06-04

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4937
Historical Volatility (Parkinson)	0.5147
Implied Volatility (Calls)	0.5766
Implied Volatility (Puts)	0.5953
Implied Volatility (Mean)	0.5860
Put-Call Implied Volatility Ratio	1.0323
Implied Volatility Skew	0.1715
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.4687