Put-Call Ratio (Volume) (90-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

SELLAS Life Sciences Group, Inc. (SLS) had 90-Day Put-Call Ratio (Volume) of 0.1783 for 2026-10-16.

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Figures for 2026-10-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.8845
Historical Volatility (Parkinson)	0.8254
Implied Volatility (Calls)	1.9657
Implied Volatility (Puts)	2.0787
Implied Volatility (Mean)	2.0222
Put-Call Implied Volatility Ratio	1.0574
Implied Volatility Skew	0.0400
Option Statistics
Put-Call Ratio (Volume)	0.1783
Put-Call Ratio (Open Interest)	0.3066