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 1.5385 for 2026-07-17.

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Figures for 2026-07-17

Volatility Metrics
Historical Volatility (Close-to-Close)	0.8361
Historical Volatility (Parkinson)	0.8236
Implied Volatility (Calls)	1.2175
Implied Volatility (Puts)	1.3338
Implied Volatility (Mean)	1.2756
Put-Call Implied Volatility Ratio	1.0955
Implied Volatility Skew	-0.0858
Option Statistics
Put-Call Ratio (Volume)	1.5385
Put-Call Ratio (Open Interest)	0.0000