Aon plc (Class A)
Held by 17 tracked managers as of Q2 2026 · CUSIP ⓘCUSIP: A 9-character ID for one specific security - one share class of one company, or one bond. Tickers can change and can mean different things in different countries; a CUSIP always identifies exactly the same security, which is why filings use it. Guide G0403H108 · Sector ⓘGICS sectors: The 11-sector system most investors know (Global Industry Classification Standard): Technology, Health Care, Financials and so on. This site assigns each company a GICS-style sector from its SIC code, with a few hand corrections, so sector pages match the names investors expect. Guide
Educational and informational only, not personalized investment advice. Based on public filings that may be delayed or contain errors; verify with the original filings. Disclaimer
Tracked capital in this stock
Total value held (area) and number of managers (line). Dips can mean a large holder filed that quarter confidentially (e.g. Norges Bank in Q1/Q3).
Aggregate buying and selling
Net share change reported each quarter
Who owns AON?
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Who owns AON? — Q2 2026
Holders ranked by position size, with each one's quarter-over-quarter change.
Column filters
| # | Manager | Fund | Shares | Value ↓ | % of their portfolio | QoQ | Δ shares | Δ shares % | Est. Δ value ⓘChange in shares × this quarter's price |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Dodge & Cox | Dodge & Cox | 8.59M | $2.85B | 1.5% | Added | +477.0K | +5.9% | +$158.23M |
| 2 | Norges Bank | Norges Bank Investment Management | 2.80M | $927.66M | 0.1% | — | — | — | — |
| 3 | Boston Partners | Boston Partners Global Investors | 2.09M | $695.75M | 0.6% | Added | +134.7K | +6.9% | +$44.86M |
| 4 | Mawer | Mawer Investment Management | 1.17M | $388.62M | 2.6% | Reduced | -105.5K | -8.3% | -$34.98M |
| 5 | Andreas Halvorsen | Viking Global Investors | 1.15M | $381.86M | 1.1% | Added | +64.2K | +5.9% | +$21.28M |
| 6 | Diamond Hill | Diamond Hill Capital Management | 1.11M | $369.55M | 3.0% | Reduced | -373.7K | -25.1% | -$123.96M |
| 7 | Seth Klarman | The Baupost Group | 687.00K | $227.87M | 4.2% | Reduced | -82.0K | -10.7% | -$27.20M |
| 8 | First Pacific Advisors | First Pacific Advisors, LP | 681.37K | $226.00M | 2.8% | Reduced | -21.9K | -3.1% | -$7.26M |
| 9 | Israel Englander | Millennium Management | 312.20K | $103.55M | 0.1% | Added | +292.2K | +1462.9% | +$96.93M |
| 10 | Polen Capital | Polen Capital Management | 164.03K | $54.41M | 0.5% | Reduced | -1.2M | -87.9% | -$394.72M |
| 11 | Tom Gayner | Markel Group | 135.80K | $45.04M | 0.3% | Held | 0 | 0.0% | $0 |
| 12 | Ken Griffin | Citadel Advisors | 105.57K | $35.02M | 0.0% | Added | +25.3K | +31.5% | +$8.38M |
| 13 | David Shaw | D.E. Shaw & Co. | 34.77K | $11.53M | 0.0% | Reduced | -93.6K | -72.9% | -$31.03M |
| 14 | Ray Dalio | Bridgewater Associates | 15.66K | $5.20M | 0.0% | Reduced | -4.6K | -22.5% | -$1.51M |
| 15 | Donald Yacktman | Yacktman Asset Management | 12.91K | $4.28M | 0.1% | Held | 0 | 0.0% | $0 |
| 16 | Two Sigma | Two Sigma Investments | 6.30K | $2.09M | 0.0% | Reduced | -13.2K | -67.8% | -$4.39M |
| 17 | Ken Fisher | Fisher Asset Management | 2.80K | $927.89K | 0.0% | New | +2.8K | — | +$927.89K |
Column filters
| Manager | Fund | Shares sold | Value last quarter ↓ |
|---|---|---|---|
| Steve Cohen | Point72 Asset Management | -33.3K | $10.75M |
| Jim Simons | Renaissance Technologies | -11.6K | $3.74M |
| Mario Gabelli | GAMCO Investors | -5.9K | $1.92M |
Politician trades
Column filters
| Politician | Date | Ticker | Asset | Type | Reported range ⓘThe dollar range the politician reported. Exact amounts are not disclosed. | Est. size ⓘOur estimate only: the midpoint of the reported range. | Owner | Account ⓘSubholding Of: the account the trade was in, as named on the report (e.g. an IRA or a brokerage account). The same stock bought on the same day in different accounts is a separate trade in each account. | Filed ↓ | Filing delay ⓘDays between the trade and the report. Over 45 days is late under the STOCK Act. | Source |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Michael T. McCaul Politician | Jun 16, 2025 | AON | AON PLC-CLASS A scanned | Sale | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Jul 7, 2025 | 21 days | PTR ↗ |
| Jefferson Shreve Politician | May 8, 2025 | AON | Aon plc Class A Ordinary Shares (AON) [ST] | Sale | $15,001 - $50,000 | Est. $32,500 (midpoint of reported range $15,001–$50,000) | Self | CRT - Standard Unit Trust | Jun 22, 2025 | 45 days | PTR ↗ |
| Michael T. McCaul Politician | Apr 2, 2025 | AON | AON PLC scanned | Sale | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | May 12, 2025 | 40 days | PTR ↗ |
| Michael T. McCaul Politician | Apr 14, 2025 | AON | AON PLC scanned | Sale | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | May 12, 2025 | 28 days | PTR ↗ |
| Michael T. McCaul Politician | Mar 26, 2025 | AON | AON PLC scanned | Sale | $15,001 - $50,000 | Est. $32,500 (midpoint of reported range $15,001–$50,000) | Spouse | — | Apr 17, 2025 | 22 days | PTR ↗ |
| Michael T. McCaul Politician | Mar 19, 2025 | AON | AON PLC scanned | Sale | $15,001 - $50,000 | Est. $32,500 (midpoint of reported range $15,001–$50,000) | Spouse | — | Apr 17, 2025 | 29 days | PTR ↗ |
| Michael T. McCaul Politician | Jan 9, 2025 | AON | AON PLC scanned | Sale | $50,001 - $100,000 | Est. $75,000 (midpoint of reported range $50,001–$100,000) | Spouse | — | Feb 11, 2025 | 33 days | PTR ↗ |
| Michael T. McCaul Politician | Nov 19, 2024 | AON | AON PLC scanned | Sale | $50,001 - $100,000 | Est. $75,000 (midpoint of reported range $50,001–$100,000) | — | — | Dec 16, 2024 | 27 days | PTR ↗ |