# Aon PLC (AON) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: G0403H108
Page URL: https://superinvestorclub.com/stock/AON
Last updated: 2026-08-29T13:48:07.684Z

## Summary

As of the most recent 13F filing period, Aon PLC (AON) is held by 14 tracked superinvestors with an aggregate position value of $4.28B representing 08593144115126910955746870006813672138601640351358009803444973257891566312915648 shares.

## Top institutional holders (14)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Dodge & Cox](https://superinvestorclub.com/manager/16) | Dodge & Cox | 8593144 | $2.85B | 1.49% | 2026-06-30 |
| 2 | [Andreas Halvorsen](https://superinvestorclub.com/manager/59) | Viking Global Investors | 1151269 | $381.9M | 1.09% | 2026-06-30 |
| 3 | [William Von Mueffling](https://superinvestorclub.com/manager/2284) | Cantillon Capital Management | 1095574 | $353.6M | 2.35% | 2026-03-31 |
| 4 | [Seth Klarman](https://superinvestorclub.com/manager/7) | Baupost Group | 687000 | $227.9M | 4.21% | 2026-06-30 |
| 5 | [Steven Romick](https://superinvestorclub.com/manager/289) | First Pacific Advisors | 681367 | $226.0M | 2.79% | 2026-06-30 |
| 6 | [Wallace Weitz](https://superinvestorclub.com/manager/82) | Weitz Investment Management | 213860 | $70.9M | 4.91% | 2026-06-30 |
| 7 | [Polen Capital](https://superinvestorclub.com/manager/271) | Polen Capital Management | 164035 | $54.4M | 0.47% | 2026-06-30 |
| 8 | [Tom Gayner](https://superinvestorclub.com/manager/22) | Markel Group | 135800 | $45.0M | 0.34% | 2026-06-30 |
| 9 | [Wally Obermeyer](https://superinvestorclub.com/manager/3283) | Obermeyer Wealth Partners | 98034 | $32.5M | 1.33% | 2026-06-30 |
| 10 | [Boykin Curry](https://superinvestorclub.com/manager/3282) | Eagle Capital Management | 44973 | $14.9M | 0.05% | 2026-06-30 |
| 11 | [Jensen Investment Management](https://superinvestorclub.com/manager/93) | Jensen Investment Management | 25789 | $8.6M | 0.21% | 2026-06-30 |
| 12 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 15663 | $5.2M | 0.02% | 2026-06-30 |
| 13 | [Donald Yacktman](https://superinvestorclub.com/manager/13) | Yacktman Asset Management | 12915 | $4.3M | 0.05% | 2026-06-30 |
| 14 | [David Katz](https://superinvestorclub.com/manager/79) | Matrix Asset Advisors | 648 | $214,935 | 0.02% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2023-06-30: 2 holders, $683.3M aggregate, 01806709172654 shares
- 2023-09-30: 3 holders, $666.0M aggregate, 01740289169092144650 shares
- 2023-12-31: 4 holders, $667.2M aggregate, 01981589165496144650904 shares
- 2024-03-31: 7 holders, $2.45B aggregate, 0410000027895341583001127741100505049011670 shares
- 2024-06-30: 8 holders, $2.54B aggregate, 0410000040011322609501139501125925049011670691 shares
- 2024-09-30: 9 holders, $3.44B aggregate, 0410000039862487339885630272609501201501101645049011670 shares
- 2024-12-31: 10 holders, $3.61B aggregate, 041000003983556728493720364260950126200108090116709087691 shares
- 2025-03-31: 12 holders, $4.86B aggregate, 041000003007719262348912835486800122134501294501049191167088302976648 shares
- 2025-06-30: 12 holders, $4.10B aggregate, 04100000274562722842591247354652019213450129800102502129159800699648 shares
- 2025-09-30: 15 holders, $5.75B aggregate, 041000003464683249016722841511414618123374165444521345012980010107312915101005705704648 shares
- 2025-12-31: 15 holders, $6.61B aggregate, 07852456360299522694141846294124301878365065653121873513405098342133681291510603699648 shares
- 2026-03-31: 14 holders, $4.55B aggregate, 0811609513540531095574108711476900070325846335021386013580098353255692021912915648 shares

## Recent congressional trades (27)

- 2025-11-10: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-11-03: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-10-27: Michael McCaul (Republican-TX) sale $1,001 - $15,000
- 2025-10-21: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-10-16: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-10-07: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-08-26: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-08-21: Michael McCaul (Republican-TX) sale $1,001 - $15,000
- 2025-08-04: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-07-25: Ro Khanna (Democrat-CA) sale $1,001 - $15,000
- 2025-06-16: Michael McCaul (Republican-TX) sale $1,001 - $15,000
- 2025-05-27: Thomas Kean Jr (Republican-NJ) purchase $1,001 - $15,000
- 2025-05-27: Thomas H. Kean (R-NJ) purchase $1,001 - $15,000
- 2025-05-08: Jefferson Shreve (Republican-IN) sale $15,001 - $50,000
- 2025-04-25: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "Aon PLC (AON) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/AON), aggregating SEC 13F, Form 4, and congressional disclosures."