Aon plc
Market Cap
$71.6B
Global Rank
#215
All-Time High
$76.0B
2024-12-31
Total Growth
+0%
since 2026
About Aon plc
Aon plc (AON) is a Ireland-based company in the Insurance Brokers industry, part of the Financial Services sector. With a current market capitalization of $71.6B, it is ranked #215 among the world's largest companies. Its market cap peaked at $76.0B and reached as high as rank #167 in 2024.
Aon plc Market Cap History (2026–2026)
Compare Aon plc
Ranking History
| Year | Market Cap | Rank | YoY Change |
|---|---|---|---|
| 2026 | $71.6B | #215(↓32) | -4.8% |
| 2025 | $75.2B | #183(↓16) | -1.2% |
| 2024 | $76.0B | #167(↑4) | +24.5% |
| 2023 | $61.1B | #171(↓29) | -2.3% |
| 2022 | $62.5B | #142(↑18) | +0.6% |
| 2021 | $62.2B | #160(↑32) | +43.4% |
| 2020 | $43.4B | #192(↓21) | +2.4% |
| 2019 | $42.4B | #171(↑19) | +44.7% |
| 2018 | $29.3B | #190(↑20) | +9.9% |
| 2017 | $26.6B | #210(↓9) | +21.5% |
| 2016 | $21.9B | #201(↑10) | +22.5% |
| 2015 | $17.9B | #211(↓7) | -1.6% |
| 2014 | $18.2B | #204(↓3) | +14.3% |
| 2013 | $15.9B | #201(↑4) | +52.5% |
| 2012 | $10.4B | #205(↓6) | +20.3% |
| 2011 | $8.7B | #199(↑17) | +3.0% |
| 2010 | $8.4B | #216(↓5) | +21.8% |
| 2009 | $6.9B | #211(↓55) | -14.8% |
| 2008 | $8.1B | #156(↑44) | -2.9% |
| 2007 | $8.4B | #200(↑10) | +37.0% |
| 2006 | $6.1B | #210(↓12) | -0.1% |
| 2005 | $6.1B | #198(↑11) | +54.3% |
| 2004 | $4.0B | #209(↓19) | +2.1% |
| 2003 | $3.9B | #190(↓3) | +30.4% |
| 2002 | $3.0B | #187(↓35) | -45.1% |
| 2001 | $5.4B | #152(↓6) | +6.3% |
| 2000 | $5.1B | #146(↓45) | -12.0% |
| 1999 | $5.8B | #101(↓8) | +10.7% |
| 1998 | $5.2B | #93(↓7) | -3.9% |
| 1997 | $5.4B | #86(↑4) | +44.6% |
| 1996 | $3.8B | #90(↓6) | +28.0% |
| 1995 | $2.9B | #84(↓2) | +61.6% |
| 1994 | $1.8B | #82 |
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FAQ
What is Aon plc's market cap?
Aon plc (AON) has a market capitalization of $71.6B, making it the #215 largest company in the world by market cap.
What was Aon plc's highest market cap?
Aon plc's all-time high market cap was $76.0B, reached in 2024-12-31. Its highest rank was #167 in 2024.
What sector is Aon plc in?
Aon plc is in the Financial Services sector, specifically the Insurance Brokers industry. It is based in Ireland.
How has Aon plc's market cap changed over time?
Aon plc has been tracked since 2026. Its market cap has grown by 0% from $71.6B in 2026 to $71.6B today.