Implied Volatility Skew (30-Day)

Implied Volatility Skew: A measurement that quantifies the difference in implied volatility of options at lower and higher strike prices.

Aon plc (AON) had 30-Day Implied Volatility Skew of 0.0305 for 2026-07-17.

Over 300 data fields encompassing historical volatility, implied volatility, and put-call ratios for multiple time frames
Download data in CSV, Excel, JSON, or XML format
Up to 20 years of data history
52-Week Rank and Percentile for all metrics and time frames

10-Day 20-Day 30-Day 60-Day
90-Day 120-Day 150-Day 180-Day

Figures for 2026-07-17

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3537
Historical Volatility (Parkinson)	0.2798
Implied Volatility (Calls)	0.3029
Implied Volatility (Puts)	0.3107
Implied Volatility (Mean)	0.3068
Put-Call Implied Volatility Ratio	1.0257
Implied Volatility Skew	0.0305
Option Statistics
Put-Call Ratio (Volume)	0.5301
Put-Call Ratio (Open Interest)	0.7635