AON Option Overview

234 calls and 100 puts traded on Nov 4, 2026, 334 contracts in total. Open interest was 10.96K contracts. Over the past 30 days, volume averaged 648 contracts per day. The AON option volume chart shows volume by strike and expiration date.

Aon IV rank is 9, so its 30-day implied volatility of 28.0% is near the bottom of its one-year range. Over the past year it ranged from 16.8% on Dec 22, 2025 to 140.9% on Jul 17, 2026. See the AON implied volatility history for a longer view.

The Aon put/call volume ratio was 0.43 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.69. The AON open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Aon options about one week from expiration was $310.00, 10.1% below the $344.70 close. The AON max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 28.4%, options price a move of about ±$13.58 (±3.9%) over the next week, a range of roughly $331.12 to $358.28 from the Nov 4, 2026 close. The AON expected move chart shows it for every expiration date.