Put-Call Ratio (Volume) (20-Day)

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

Annexon, Inc. (ANNX) had 20-Day Put-Call Ratio (Volume) of 3.5000 for 2026-04-20.

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Figures for 2026-04-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5830
Historical Volatility (Parkinson)	0.6783
Implied Volatility (Calls)	0.8742
Implied Volatility (Puts)	0.8077
Implied Volatility (Mean)	0.8410
Put-Call Implied Volatility Ratio	0.9240
Implied Volatility Skew	0.1306
Option Statistics
Put-Call Ratio (Volume)	3.5000
Put-Call Ratio (Open Interest)	0.0110