Who Owns AON PLC (AON)? -- Institutional Holders (2026-06-30)
49 institutions reported holding $130.9M of AON PLC (AON) in SEC 13F filings for 2026-06-30. Largest institutional holders: Assenagon Asset Management S.A. ($62.6M), Czech National Bank ($20.2M), ABNER HERRMAN & BROCK LLC ($17.0M), CARDEROCK CAPITAL MANAGEMENT INC ($7.8M), KWMG, LLC ($7.0M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | Assenagon Asset Management S.A. | $62.6M | 188,821 | Added |
| 2 | Czech National Bank | $20.2M | 60,792 | Added |
| 3 | ABNER HERRMAN & BROCK LLC | $17.0M | 51,218 | Trimmed |
| 4 | CARDEROCK CAPITAL MANAGEMENT INC | $7.8M | 23,559 | Added |
| 5 | KWMG, LLC | $7.0M | 21,084 | Added |
| 6 | ANDERSON HOAGLAND & CO | $3.6M | 10,927 | Added |
| 7 | Chesley Taft & Associates LLC | $1.4M | 4,081 | Added |
| 8 | CANANDAIGUA NATIONAL BANK & TRUST CO | $1.2M | 3,540 | Trimmed |
| 9 | CLUNE & ASSOCIATES, LTD. | $764,214 | 2,304 | Trimmed |
| 10 | Bangor Savings Bank | $730,381 | 2,202 | Trimmed |
| 11 | GAMMA Investing LLC | $612,631 | 1,847 | Added |
| 12 | CX Institutional | $585,000 | 1,765 | Trimmed |
| 13 | Hummer Financial Advisory Services Inc | $558,234 | 1,683 | Hold |
| 14 | Trust Asset Management LLC | $538,487 | 2,390 | Hold |
| 15 | Central Pacific Bank - Trust Division | $505,827 | 1,525 | Hold |
| 16 | Meriwether Wealth & Planning, LLC | $497,867 | 1,501 | Trimmed |
| 17 | RDA Financial Network | $481,282 | 1,451 | Added |
| 18 | NEVILLE RODIE & SHAW INC | $481,000 | 1,450 | Hold |
| 19 | Valeo Financial Advisors, LLC | $381,856 | 1,151 | Added |
| 20 | Apella Capital, LLC | $358,393 | 996 | Added |
| 21 | Sandy Cove Advisors, LLC | $353,017 | 1,064 | Trimmed |
| 22 | INSPIRION WEALTH ADVISORS, LLC | $310,578 | 904 | Trimmed |
| 23 | LifeGoal Investments, LLC | $295,204 | 890 | New |
| 24 | Arlington Partners LLC | $294,209 | 887 | Added |
| 25 | Bison Wealth, LLC | $269,502 | 755 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30