Put-Call Ratio (Volume) (30-Day)

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

TransAlta Corporation (TAC) had 30-Day Put-Call Ratio (Volume) of 3.6046 for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2920
Historical Volatility (Parkinson)	0.2950
Implied Volatility (Calls)	0.4864
Implied Volatility (Puts)	0.4973
Implied Volatility (Mean)	0.4919
Put-Call Implied Volatility Ratio	1.0224
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	3.6046
Put-Call Ratio (Open Interest)	0.2163