Put-Call Ratio (Open Interest) (180-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 180-Day Put-Call Ratio (Open Interest) of 1.0211 for 2026-05-21.

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Figures for 2026-05-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2556
Historical Volatility (Parkinson)	0.2463
Implied Volatility (Calls)	0.3196
Implied Volatility (Puts)	0.3204
Implied Volatility (Mean)	0.3200
Put-Call Implied Volatility Ratio	1.0024
Implied Volatility Skew	0.0202
Option Statistics
Put-Call Ratio (Volume)	0.3636
Put-Call Ratio (Open Interest)	1.0211