Put-Call Ratio (Volume) (20-Day)

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

Sigma Lithium Corporation (SGML) had 20-Day Put-Call Ratio (Volume) of 1.7081 for 2026-04-21.

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Figures for 2026-04-21

Volatility Metrics
Historical Volatility (Close-to-Close)	1.2539
Historical Volatility (Parkinson)	0.9183
Implied Volatility (Calls)	1.2815
Implied Volatility (Puts)	1.1736
Implied Volatility (Mean)	1.2275
Put-Call Implied Volatility Ratio	0.9158
Implied Volatility Skew	-0.0329
Option Statistics
Put-Call Ratio (Volume)	1.7081
Put-Call Ratio (Open Interest)	0.7752