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Cantillon Capital Management LLC

Position in AON — Aon plc

CIK 1279936 New York, NY

Position in AON

as of Mar 31, 2026 · filed May 7, 2026
Position Value
$353,629,375
-$85,006,816 QoQ
Shares Held
1,095,574
-11.9% QoQ
Ownership
0.516%
of shares outstanding
% of Portfolio
2.35%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2020
24 quarters on record
Voting authority Sole 90% Shared 0% None 10%

Common Shares in AON Over Time

Shares Held

Position Value (USD)

All Filings in AON

Export CSV
24 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $353,629,375 1,095,574
2025-12-31 $438,636,191 1,243,018
2025-09-30 $439,927,365 1,233,741
2025-06-30 $445,006,012 1,247,354
2025-03-31 $512,251,170 1,283,548
2024-12-31 $475,250,568 1,323,228
2024-09-30 $455,398,265 1,316,218
2024-06-30 $334,170,957 1,138,262
2024-03-31 $399,192,525 1,196,190
2023-12-31 $355,095,037 1,220,174
2023-09-30 $405,264,299 1,249,967
2023-06-30 $433,173,529 1,254,848
2023-03-31 $372,015,714 1,179,916
2022-12-31 $360,343,882 1,200,586
2022-09-30 $327,314,102 1,221,914
2022-06-30 $332,620,884 1,233,391
2022-03-31 $403,781,199 1,240,000
2021-12-31 $361,901,290 1,204,090
2021-09-30 $369,541,189 1,293,142
2021-06-30 $314,311,064 1,316,431
2021-03-31 $307,651,086 1,336,974
2020-12-31 $292,942,544 1,386,579
2020-09-30 $287,926,514 1,395,669
2020-06-30 $271,880,322 1,411,632