Put-Call Ratio (Volume) (180-Day)

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

TransAlta Corporation (TAC) had 180-Day Put-Call Ratio (Volume) of 0.1212 for 2026-06-05.

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Figures for 2026-06-05

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4203
Historical Volatility (Parkinson)	0.3705
Implied Volatility (Calls)	0.5426
Implied Volatility (Puts)	0.6021
Implied Volatility (Mean)	0.5724
Put-Call Implied Volatility Ratio	1.1097
Implied Volatility Skew	0.0233
Option Statistics
Put-Call Ratio (Volume)	0.1212
Put-Call Ratio (Open Interest)	0.0650