Put-Call Ratio (Open Interest) (20-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

ResMed Inc. (RMD) had 20-Day Put-Call Ratio (Open Interest) of 0.7316 for 2026-10-05.

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Figures for 2026-10-05

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1241
Historical Volatility (Parkinson)	0.1980
Implied Volatility (Calls)	0.3219
Implied Volatility (Puts)	0.2941
Implied Volatility (Mean)	0.3080
Put-Call Implied Volatility Ratio	0.9135
Implied Volatility Skew	0.0651
Option Statistics
Put-Call Ratio (Volume)	2.7377
Put-Call Ratio (Open Interest)	0.7316