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.

Altimmune, Inc. (ALT) had 30-Day Put-Call Ratio (Volume) of 0.3742 for 2025-10-23.

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Figures for 2025-10-23

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3812
Historical Volatility (Parkinson)	0.4884
Implied Volatility (Calls)	1.3125
Implied Volatility (Puts)	1.0914
Implied Volatility (Mean)	1.2019
Put-Call Implied Volatility Ratio	0.8315
Implied Volatility Skew	-0.1176
Option Statistics
Put-Call Ratio (Volume)	0.3742
Put-Call Ratio (Open Interest)	0.1063