Cantillon Capital Management’s Aon AON Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $354M | Sell |
1,095,574
-147,444
| -12% | -$49M | 2.35% | 19 |
|
|
2025
Q4 | $439M | Buy |
1,243,018
+9,277
| +0.8% | +$3.24M | 2.37% | 16 |
|
|
2025
Q3 | $440M | Sell |
1,233,741
-13,613
| -1% | -$4.92M | 2.42% | 18 |
|
|
2025
Q2 | $445M | Sell |
1,247,354
-36,194
| -3% | -$13.1M | 2.57% | 16 |
|
|
2025
Q1 | $512M | Sell |
1,283,548
-39,680
| -3% | -$15.2M | 3.32% | 9 |
|
|
2024
Q4 | $475M | Buy |
1,323,228
+7,010
| +0.5% | +$2.58M | 2.87% | 15 |
|
|
2024
Q3 | $455M | Buy |
1,316,218
+177,956
| +16% | +$58.2M | 2.78% | 17 |
|
|
2024
Q2 | $334M | Sell |
1,138,262
-57,928
| -5% | -$17.1M | 2.23% | 20 |
|
|
2024
Q1 | $399M | Sell |
1,196,190
-23,984
| -2% | -$7.44M | 2.51% | 21 |
|
|
2023
Q4 | $355M | Sell |
1,220,174
-29,793
| -2% | -$9.54M | 2.37% | 21 |
|
|
2023
Q3 | $405M | Sell |
1,249,967
-4,881
| -0.4% | -$1.61M | 3.01% | 11 |
|
|
2023
Q2 | $433M | Buy |
1,254,848
+74,932
| +6% | +$24.3M | 3.03% | 13 |
|
|
2023
Q1 | $372M | Sell |
1,179,916
-20,670
| -2% | -$6.4M | 3.03% | 13 |
|
|
2022
Q4 | $360M | Sell |
1,200,586
-21,328
| -2% | -$6.23M | 3.05% | 12 |
|
|
2022
Q3 | $327M | Sell |
1,221,914
-11,477
| -0.9% | -$3.24M | 2.96% | 12 |
|
|
2022
Q2 | $333M | Sell |
1,233,391
-6,609
| -0.5% | -$1.9M | 2.78% | 16 |
|
|
2022
Q1 | $404M | Buy |
1,240,000
+35,910
| +3% | +$10.4M | 2.88% | 14 |
|
|
2021
Q4 | $362M | Sell |
1,204,090
-89,052
| -7% | -$26.7M | 2.39% | 22 |
|
|
2021
Q3 | $370M | Sell |
1,293,142
-23,289
| -2% | -$6.26M | 2.52% | 20 |
|
|
2021
Q2 | $314M | Sell |
1,316,431
-20,543
| -2% | -$5.02M | 2.12% | 24 |
|
|
2021
Q1 | $308M | Sell |
1,336,974
-49,605
| -4% | -$10.9M | 2.24% | 23 |
|
|
2020
Q4 | $293M | Sell |
1,386,579
-9,090
| -0.7% | -$1.86M | 2.2% | 27 |
|
|
2020
Q3 | $288M | Sell |
1,395,669
-15,963
| -1% | -$3.19M | 2.41% | 20 |
|
|
2020
Q2 | $272M | Buy |
1,411,632
+13,457
| +1% | +$2.51M | 2.36% | 20 |
|
|
2020
Q1 | $231M | Sell |
1,398,175
-1,197
| -0.1% | -$245K | 2.55% | 19 |
|
|
2019
Q4 | $291M | Sell |
1,399,372
-29,679
| -2% | -$5.88M | 2.71% | 18 |
|
|
2019
Q3 | $277M | Sell |
1,429,051
-8,783
| -0.6% | -$1.69M | 2.69% | 19 |
|
|
2019
Q2 | $277M | Sell |
1,437,834
-31,497
| -2% | -$5.71M | 2.8% | 20 |
|
|
2019
Q1 | $251M | Buy |
1,469,331
+148,883
| +11% | +$24.1M | 2.67% | 20 |
|
|
2018
Q4 | $192M | Buy |
1,320,448
+10,166
| +0.8% | +$1.58M | 2.32% | 22 |
|
|
2018
Q3 | $201M | Sell |
1,310,282
-87,408
| -6% | -$12.8M | 2.27% | 21 |
|
|
2018
Q2 | $192M | Buy |
1,397,690
+485,561
| +53% | +$68.4M | 2.06% | 23 |
|
|
2018
Q1 | $128M | Sell |
912,129
-17,277
| -2% | -$2.42M | 1.46% | 28 |
|
|
2017
Q4 | $125M | Sell |
929,406
-63,868
| -6% | -$9.09M | 1.48% | 26 |
|
|
2017
Q3 | $145M | Sell |
993,274
-27,986
| -3% | -$3.91M | 1.69% | 23 |
|
|
2017
Q2 | $136M | Sell |
1,021,260
-42,580
| -4% | -$5.38M | 1.7% | 24 |
|
|
2017
Q1 | $126M | Buy |
1,063,840
+547,434
| +106% | +$63.2M | 1.61% | 24 |
|
|
2016
Q4 | $57.6M | Buy |
+516,406
| New | +$57.6M | 0.81% | 28 |
|
Other funds holding AON
VCM
VPM
Cantillon Capital Management's AON Position: Q1 2026 in Review
Cantillon Capital Management reduced its Aon (AON) stake by 12% in Q1 2026, selling an estimated $49M and leaving 1,095,574 shares worth $354M. The position accounts for 2.35% of the portfolio, ranked #19.
Cantillon Capital Management first reported a position in AON in Q4 2016 and has held it in 38 quarters since. The position peaked at $512M in Q1 2025. 1,252 funds tracked by Wall St. Rank hold AON as of Q1 2026.
- Cantillon Capital Management held 1,095,574 shares of Aon worth $354M as of Q1 2026.
- Cantillon Capital Management sold 147,444 Aon shares in Q1 2026, an estimated $49M.
- Aon made up 2.35% of Cantillon Capital Management's portfolio in Q1 2026, its #19 holding.
- Cantillon Capital Management first reported a position in Aon in Q4 2016 and has held it in 38 quarters since.
- Cantillon Capital Management's Aon position peaked at $512M in Q1 2025.
- 1,252 funds tracked by Wall St. Rank held Aon as of Q1 2026.
Based on Cantillon Capital Management's 13F filing for Q1 2026, filed 7 May 2026.