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 0.3818 for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	1.1079
Historical Volatility (Parkinson)	0.9300
Implied Volatility (Calls)	2.3869
Implied Volatility (Puts)	3.2200
Implied Volatility (Mean)	2.8035
Put-Call Implied Volatility Ratio	1.3490
Implied Volatility Skew	2.3917
Option Statistics
Put-Call Ratio (Volume)	0.3818
Put-Call Ratio (Open Interest)	0.0492