Aon plc (AON) ownership: insiders 1% · institutions 91% (13F 2026-03-31). Insider activity, 90 days: Routine (7 sales, 0 open-market buys). 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| Vanguard | 20327022.00 | $6.56B | 9.6% | 2026-03-31 |
| BlackRock | 16148507.00 | $5.21B | 7.6% | 2026-03-31 |
| Capital Group | 12522646.00 | $4.04B | 5.9% | 2026-03-31 |
| State Street | 9219773.00 | $2.98B | 4.3% | 2026-03-31 |
| MFS Investment Management | 8358097.00 | $2.75B | 3.9% | 2026-03-31 |
| Dodge & Cox | 8116095.00 | $2.62B | 3.8% | 2026-03-31 |
| Morgan Stanley | 6374945.00 | $2.06B | 3.0% | 2026-03-31 |
| JPMorgan | 5641431.00 | $1.83B | 2.7% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-07-28 | |
| Sell | null | 2026-07-28 | |
| Sell | null | 2026-07-28 | |
| Sell | null | 2026-07-17 | |
| Sell | null | 2026-07-17 | |
| Sell | null | 2026-07-17 | |
| Sell | null | 2026-07-07 | |
| Sell | null | 2026-07-01 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.