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.

Ballard Power Systems, Inc. (BLDP) had 30-Day Put-Call Ratio (Volume) of 0.0647 for 2025-10-13.

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Figures for 2025-10-13

Volatility Metrics
Historical Volatility (Close-to-Close)	1.0316
Historical Volatility (Parkinson)	0.8310
Implied Volatility (Calls)	1.4411
Implied Volatility (Puts)	1.3716
Implied Volatility (Mean)	1.4063
Put-Call Implied Volatility Ratio	0.9517
Implied Volatility Skew	0.0293
Option Statistics
Put-Call Ratio (Volume)	0.0647
Put-Call Ratio (Open Interest)	0.1371