Put-Call Ratio (Open Interest) (30-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.

Sigma Lithium Corporation (SGML) had 30-Day Put-Call Ratio (Open Interest) of 0.5235 for 2026-10-20.

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Figures for 2026-10-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6821
Historical Volatility (Parkinson)	0.6116
Implied Volatility (Calls)	0.8360
Implied Volatility (Puts)	0.8504
Implied Volatility (Mean)	0.8432
Put-Call Implied Volatility Ratio	1.0173
Implied Volatility Skew	0.0804
Option Statistics
Put-Call Ratio (Volume)	2.1471
Put-Call Ratio (Open Interest)	0.5235