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Aon plc
AON - Company ID 0000315293
Market cap$69.00 B
Rank#246
Filings1,000
Market capitalization of Aon plc
As of 2026-09-07, Aon plc (AON) has a market capitalization of $69.00 B, making it the #246 most valuable US-listed company.
Recent market cap readings
| Date | Market cap |
|---|---|
| 2026-09-07 | $69.00 B |
| 2026-09-06 | $69.00 B |
| 2026-09-05 | $69.00 B |
| 2026-09-04 | $68.78 B |
| 2026-09-03 | $69.84 B |
| 2026-09-02 | $70.31 B |
| 2026-09-01 | $69.69 B |
| 2026-08-31 | $68.67 B |
| 2026-08-30 | $75.91 B |
| 2026-08-29 | $75.91 B |
| 2026-08-28 | $75.91 B |
| 2026-08-27 | $74.51 B |
Market Cap of similar companies
Frequently asked questions
What is Aon plc's market cap?
As of 2026-09-07, Aon plc (AON) has a market capitalization of $69.00 B, making it the #246 most valuable US-listed company.
Where does Aon plc rank by market cap?
Aon plc is the #246 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.