Historical Volatility (Parkinson) (30-Day)

Historical Volatility (Parkinson): The past volatility of the security over the selected time frame, calculated using the high and low prices on each trading day.

ResMed Inc. (RMD) had 30-Day Historical Volatility (Parkinson) of 0.2227 for 2025-08-15.

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Figures for 2025-08-15

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2540
Historical Volatility (Parkinson)	0.2227
Implied Volatility (Calls)	0.2248
Implied Volatility (Puts)	0.2062
Implied Volatility (Mean)	0.2155
Put-Call Implied Volatility Ratio	0.9173
Implied Volatility Skew	0.0682
Option Statistics
Put-Call Ratio (Volume)	0.5380
Put-Call Ratio (Open Interest)	1.8421