Aon plc
AON- Exchange
- NYSE
- Industry
- Insurance Agents, Brokers & Service
- SEC CIK
- 0000315293
In the last 90 days, Aon plc insiders filed 1 open-market purchase and 0 sales; 1,276 institutions reported holding it in 13F filings for Q2 2026, worth $63.9B in total; 4 superinvestors hold it, including Viking Global Investors and Baupost Group.
Key figures
- Market capClose on Nov 11, 2026
- $71.4B
- Insider buysLast 90 days, $6.55M in total
- 1
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +20 vs. previous quarter
- 1,276
- 13F valueReported value at the end of Q2 2026
- $63.9B
- Superinvestors holdingAt the end of Q2 2026
- 4
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $17.2B
- +9.4% year over year
- Net income, FY2025
- $3.69B
- +39.2% year over year
- Free cash flow, FY2025
- $3.22B
- +14.2% year over year
- Revenue, Q3 FY2026
- $4.10B
- +2.6% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Short interest
See short dataFrom FINRA, settlement date Oct 30, 2026.
- Short interest
- 3.84M
- Shares sold short
- Change
- +441.3K
- +13.0% vs. previous
- Days to cover
- 2.16
- At average daily volume
Superinvestors holding AON, Q2 2026
Go to the superinvestors tab4 superinvestors report holding Aon plc on Form 13F. Percentages are the stock's share of each portfolio.
Viking Global Investors
Andreas Halvorsen
1.1%
Aon plc's share of the portfolio
- Shares
- 1,151,269
- Value
- $381.9M
| Superinvestor | Weight | Value |
|---|---|---|
| Weitz Investment Management | 4.9% | $70.9M |
| Markel Group | 0.3% | $45.0M |
Latest insider trades
See all insider tradesOpen-market purchases and sales by Aon plc insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 3, 2026 (view filing)8:33 PM ET | Sep 2 | 1 day | Knight Lester BDirector | PPurchaseClass A Ordinary Stock | +20.0K | $327.48 | +$6.55M | +14.0%163.0K after | 6 lots |
| Jul 30, 2026 (view filing)5:23 PM ET | Jul 28 | 2 days | Zeidel DarrenGeneral Counsel | SSaleClass A Ordinary Stock | −1.90K | $377.76 | −$717.8K | −14.2%11.5K after | 3 lots10b5-1 |
| Jul 21, 2026 (view filing)4:13 PM ET | Jul 17 | 4 days | Zeidel DarrenGeneral Counsel | SSaleClass A Ordinary Stock | −1.95K | $372.05 | −$725.5K | −12.7%13.4K after | 3 lots10b5-1 |
| Jul 9, 2026 (view filing)5:48 PM ET | Jul 7 | 2 days | Zeidel DarrenGeneral Counsel | SSaleClass A Ordinary Stock | −600 | $360.00 | −$216.0K | −3.8%15.4K after | 10b5-1 |
| Mar 2, 2026 (view filing) | Feb 26 | 4 days | Zeidel DarrenGeneral Counsel | SSaleClass A Ordinary Stock | −4.30K | $329.72 | −$1.42M | −21.2%16.0K after | |
| Feb 19, 2026 (view filing) | Feb 17 | 2 days | Zeidel DarrenGeneral Counsel | SSaleClass A Ordinary Stock | −5.04K | $325.79 | −$1.64M | −19.9%20.3K after | 10b5-1 |
| Feb 12, 2026 (view filing) | Feb 10 | 2 days | Knight Lester BDirector | PPurchaseClass A Ordinary Stock | +4.00K | $319.24 | +$1.28M | +2.9%143.0K after | |
| Nov 7, 2025 (view filing) | Nov 5 | 2 days | Zeidel DarrenGeneral Counsel | SSaleClass A Ordinary Stock | −8.80K | $344.52 | −$3.03M | −30.3%20.3K after | 2 lots |
| Dec 2, 2024 (view filing) | Nov 27 | 5 days | Simon Mindy F.Chief Operating Officer | SSaleClass A Ordinary Stock | −650 | $394.34 | −$256.3K | −26.4%1.82K after | |
| Nov 29, 2024 (view filing) | Nov 26 | 3 days | Stevens LisaChief Administrative Officer | SSaleClass A Ordinary Stock | −1.27K | $387.68 | −$494.3K | −13.6%8.08K after |
Top 10 13F holders, Q2 2026
See all 1,276 holdersThe largest institutional positions in Aon plc at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 15,716,429 | $5.21B | 0.08% | −432,078−2.7% | Reduced |
| Vanguard Capital Management LLC | 13,603,465 | $4.51B | 0.10% | +21,709+0.2% | Added |
| JPMorgan Chase & Co | 12,175,974 | $3.99B | 0.23% | +6,534,543+115.8% | Added |
| Capital World Investors | 11,711,650 | $3.88B | 0.46% | +233,862+2.0% | Added |
| State Street Corp | 9,416,039 | $3.12B | 0.09% | +196,266+2.1% | Added |
| Dodge & Cox | 8,593,144 | $2.85B | 1.49% | +477,049+5.9% | Added |
| Massachusetts Financial Services Co | 7,615,397 | $2.58B | 0.82% | −742,700−8.9% | Reduced |
| Vanguard Portfolio Management LLC | 7,202,991 | $2.39B | 0.11% | +2,643,956+58.0% | Added |
| Morgan Stanley | 6,214,787 | $2.06B | 0.11% | −160,158−2.5% | Reduced |
| Geode Capital Management, LLC | 5,180,553 | $1.71B | 0.09% | −63,756−1.2% | Reduced |
Holders of 5% or more of AON
See all 2 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of Aon plc.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 13G | 7.32%15.7M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| JPMorgan Chase & Co | 13G/A | 6.70%14.3M shares | +1.10 ppfrom 5.60% | Jul 16, 20262 filings | Oct 16, 2026 | SEC |
Politician trades
All politician trades in AON10 members of Congress reported 32 trades in Aon plc since 2020. Newest filings:
| Filed | Politician | Type | Amount |
|---|---|---|---|
| Jul 21, 2026 |  Alan Armstrong Senate · OK | Buy | $1K-$15K |
| Jun 22, 2025 |  Jefferson Shreve House · IN | Sell | $15K-$50K |
| Jun 17, 2025 |  Thomas H. Kean, Jr. House · NJ | Buy | $1K-$15K |
| Apr 11, 2025 | Jefferson Shreve House · IN | Buy | $15K-$50K |
| Aug 16, 2024 |  Kathy E. Manning House · NC | Sell (partial) | $15K-$50K |
Senate · OK · Jul 21, 2026
Buy$1K-$15K
House · IN · Jun 22, 2025
Sell$15K-$50K
House · NJ · Jun 17, 2025
Buy$1K-$15K
House · IN · Apr 11, 2025
Buy$15K-$50K
House · NC · Aug 16, 2024
Sell (partial)$15K-$50K