AON Open Interest
Aon plc (AON) had 10.96K open option contracts as of Nov 4, 2026: 6.49K calls and 4.48K puts. Open interest fell 9.5% over the past four weeks. The put/call open interest ratio is 0.69, so calls outnumber puts.
Open Interest by Strike
Showing results for AON, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for AON, 2026-11-20(m), calls & puts
| Call Open Interest Total | |
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| Put Open Interest Total | |
| Open Interest Total | |
| Put-Call Open Interest Ratio |
Highest Open Interest Options
Showing results for AON, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for AON, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for AON, all expirations, calls & puts. View full history
AON Open Interest FAQ
What is open interest?
Open interest is the number of option contracts that are open and not yet closed, exercised, or expired. The Options Clearing Corporation calculates it once a day from the previous day's trades, and it is published before the market opens.
How much open interest does AON have?
Aon had 10.96K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 10.98K contracts.
Is AON open interest rising or falling?
Open interest fell 9.5% over the past four weeks. It was 12.12K contracts on Oct 7, 2026. See the AON open interest history for a longer view.
What is the AON put/call open interest ratio?
The Aon put/call open interest ratio was 0.69 as of Nov 4, 2026. Four weeks earlier it was 0.75.
What is Aon plc?
Aon is a leading global provider of insurance and reinsurance brokerage and human resources solutions.