Aon plc
US ˙ NYSE ˙ IE00BLP1HW54

SecurityAON / Aon plc
InstitutionCresset Asset Management, LLC
Latest Disclosed Ownership15,619 shares
Latest Disclosed Value $ 5,041,435
Cresset Asset Management, LLC reports 0.98% decrease in ownership of AON / Aon plc

On May 15, 2026 - Cresset Asset Management, LLC filed a 13F-HR form disclosing ownership of 15,619 shares of Aon plc (US:AON) valued at $5,041,501 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 15,774 shares of Aon plc. This represents a change in shares of -0.98% during the quarter. The current value of the position is $5,131,310 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F AON SHS CL A G0403H108 15,619 -155 -0.98 5,041 -9.43 0.0218
2026-02-17 2025-12-31 13F AON SHS CL A G0403H108 15,774 -603 -3.68 5,566 -4.68 0.0235
2026-01-22 2025-09-30 13F/A-1 AON SHS CL A G0403H108 16,377 2,286 16.22 5,840 16.15 0.0254
2025-11-12 2025-09-30 13F AON SHS CL A G0403H108 20,284 6,193 7,233 0.0272
2026-01-22 2025-06-30 13F/A-1 AON SHS CL A G0403H108 14,091 -5,183 -26.89 5,027 -34.65 0.0250
2025-08-13 2025-06-30 13F AON SHS CL A G0403H108 18,286 -988 6,524 0.0283
2025-05-13 2025-03-31 13F AON SHS CL A G0403H108 19,274 -350 -1.78 7,692 9.14 0.0383
2025-02-14 2024-12-31 13F AON SHS CL A G0403H108 19,624 -85,426 -81.32 7,048 -80.61 0.0337
2024-11-14 2024-09-30 13F AON SHS CL A G0403H108 105,050 -5,212 -4.73 36,346 12.28 0.1399
2024-08-14 2024-06-30 13F AON SHS CL A G0403H108 110,262 49,465 81.36 32,371 59.54 0.1360
2024-05-15 2024-03-31 13F AON SHS CL A G0403H108 60,797 13,801 29.37 20,289 48.35 0.0977
2024-02-14 2023-12-31 13F AON SHS CL A G0403H108 46,996 5,358 12.87 13,677 1.31 0.0817
2023-11-14 2023-09-30 13F AON SHS CL A G0403H108 41,638 -432 -1.03 13,500 -7.04 0.0521
2023-08-14 2023-06-30 13F AON SHS CL A G0403H108 42,070 39,926 1,862.22 14,523 2,051.41 0.0180
2023-05-12 2023-03-31 13F AON SHS CL A G0403H108 2,144 2 0.09 676 51.69 0.0135
2023-02-14 2022-12-31 13F AON SHS CL A G0403H108 2,142 -1,363 -38.89 446 -52.61 0.0056
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 3,505 1,159 49.40 939 51.94 0.0119
2022-08-15 2022-06-30 13F AON SHS CL A G0403H108 2,346 -1,035 -30.61 618 -43.87 0.0076
2022-05-16 2022-03-31 13F AON SHS CL A G0403H108 3,381 357 11.81 1,101 21.12 0.0114
2022-02-10 2021-12-31 13F AON SHS CL A G0403H108 3,024 -1,721 -36.27 909 -32.92 0.0088
2021-11-15 2021-09-30 13F AON SHS CL A G0403H108 4,745 388 8.91 1,355 30.29 0.0182
2021-08-10 2021-06-30 13F AON SHS CL A G0403H108 4,357 -387 -8.16 1,040 -4.67 0.0147
2021-05-12 2021-03-31 13F AON SHS CL A G0403H108 4,744 1,842 63.47 1,091 77.98 0.0173
2021-02-11 2020-12-31 13F AON SHS CL A G0403H108 2,902 158 5.76 613 8.11 0.0099
2020-11-13 2020-09-30 13F AON SHS CL A G0403H108 2,744 263 10.60 567 18.62 0.0106
2020-08-04 2020-06-30 13F AON SHS CL A G0403H108 2,481 526 26.91 478 47.99 0.0105
2020-05-15 2020-03-31 13F AON SHS CL A G0408V102 1,955 -282 -12.61 323 -30.69 0.0098
2020-02-10 2019-12-31 13F AON SHS CL A G0408V102 2,237 449 25.11 466 34.68 0.0126
2019-11-13 2019-09-30 13F AON SHS CL A G0408V102 1,788 -40 -2.19 346 -1.98 0.0106
2019-08-20 2019-06-30 13F/A-1 AON SHS CL A G0408V102 1,828 -106 -5.48 353 6.97 0.0110
2019-08-12 2019-06-30 13F AON SHS CL A G0408V102 1,828 -106 353
2019-05-15 2019-03-31 13F AON SHS CL A G0408V102 1,934 93 5.05 330 23.13 0.0128
2019-05-21 2018-12-31 13F/A-1 AON SHS CL A G0408V102 1,841 1,841 268 0.0159
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.