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.

Atossa Therapeutics, Inc. (ATOS) had 30-Day Put-Call Ratio (Volume) of 0.0000 for 2026-09-02.

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Figures for 2026-09-02

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5908
Historical Volatility (Parkinson)	0.6995
Implied Volatility (Calls)	1.3226
Implied Volatility (Puts)	2.2972
Implied Volatility (Mean)	1.8099
Put-Call Implied Volatility Ratio	1.7369
Implied Volatility Skew	0.5653
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.4083