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.

Aon plc (AON) had 30-Day Put-Call Ratio (Volume) of 0.5625 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1549
Historical Volatility (Parkinson)	0.1688
Implied Volatility (Calls)	0.2572
Implied Volatility (Puts)	0.2670
Implied Volatility (Mean)	0.2621
Put-Call Implied Volatility Ratio	1.0379
Implied Volatility Skew	0.0358
Option Statistics
Put-Call Ratio (Volume)	0.5625
Put-Call Ratio (Open Interest)	2.4061