Put-Call Ratio (Open Interest) (180-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

Gossamer Bio, Inc. (GOSS) had 180-Day Put-Call Ratio (Open Interest) of 0.0750 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.8830
Historical Volatility (Parkinson)	0.7991
Implied Volatility (Calls)	2.1759
Implied Volatility (Puts)	2.3011
Implied Volatility (Mean)	2.2385
Put-Call Implied Volatility Ratio	1.0575
Implied Volatility Skew	0.0644
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.0750