Put-Call Ratio (Volume) (30-Day)

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

Alkermes plc (ALKS) had 30-Day Put-Call Ratio (Volume) of 1.0000 for 2026-04-21.

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Figures for 2026-04-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6681
Historical Volatility (Parkinson)	0.4048
Implied Volatility (Calls)	0.5545
Implied Volatility (Puts)	0.5028
Implied Volatility (Mean)	0.5286
Put-Call Implied Volatility Ratio	0.9068
Implied Volatility Skew	0.0959
Option Statistics
Put-Call Ratio (Volume)	1.0000
Put-Call Ratio (Open Interest)	0.7093