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.

Aon plc (AON) had 20-Day Put-Call Ratio (Open Interest) of 0.9175 for 2026-03-06.

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Figures for 2026-03-06

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2031
Historical Volatility (Parkinson)	0.2165
Implied Volatility (Calls)	0.2842
Implied Volatility (Puts)	0.2907
Implied Volatility (Mean)	0.2875
Put-Call Implied Volatility Ratio	1.0226
Implied Volatility Skew	0.0889
Option Statistics
Put-Call Ratio (Volume)	0.2280
Put-Call Ratio (Open Interest)	0.9175