Aon plc
DE ˙ DB ˙ IE00BLP1HW54
272,30 € ↓ -1,70 (-0,62%)
2026-06-03
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionBrown Advisory Inc
Latest Disclosed Ownership5,553 shares
Latest Disclosed Value $ 1,792,397
Brown Advisory Inc reports 3.63% decrease in ownership of 4VK / Aon plc

On May 15, 2026 - Brown Advisory Inc filed a 13F-HR form disclosing ownership of 5,553 shares of Aon plc (DE:4VK) valued at $1,555,395 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,762 shares of Aon plc. This represents a change in shares of -3.63% during the quarter. The current value of the position is $1,512,082 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 5,553 -209 -3.63 1,792 -11.85 0.0013
2026-02-13 2025-12-31 13F AON SHS CL A G0403H108 5,762 -189 -3.18 2,033 -4.19 0.0028
2025-11-14 2025-09-30 13F AON SHS CL A G0403H108 5,951 -713 -10.70 2,122 -10.73 0.0028
2025-08-13 2025-06-30 13F AON SHS CL A G0403H108 6,664 252 3.93 2,378 -7.08 0.0031
2025-04-30 2025-03-31 13F AON SHS CL A G0403H108 6,412 149 2.38 2,559 13.74 0.0037
2025-02-14 2024-12-31 13F AON SHS CL A G0403H108 6,263 -77 -1.21 2,249 2.55 0.0029
2024-11-13 2024-09-30 13F AON SHS CL A G0403H108 6,340 -210 -3.21 2,194 14.10 0.0028
2024-08-14 2024-06-30 13F AON SHS CL A G0403H108 6,550 34 0.52 1,923 -11.59 0.0025
2024-04-24 2024-03-31 13F AON SHS CL A G0403H108 6,516 -173 -2.59 2,175 11.72 0.0029
2024-02-08 2023-12-31 13F AON SHS CL A G0403H108 6,689 587 9.62 1,947 -1.62 0.0027
2023-10-25 2023-09-30 13F AON SHS CL A G0403H108 6,102 6 0.10 1,978 -5.99 0.0032
2023-07-31 2023-06-30 13F AON SHS CL A G0403H108 6,096 187 3.16 2,104 12.94 0.0033
2023-05-08 2023-03-31 13F AON SHS CL A G0403H108 5,909 -2,310 -28.11 1,863 -24.45 0.0032
2023-02-13 2022-12-31 13F AON SHS CL A G0403H108 8,219 2,543 44.80 2,467 62.13 0.0046
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 5,676 530 10.30 1,521 9.58 0.0030
2022-11-14 2022-06-30 13F/A-2 AON SHS CL A G0403H108 5,146 -290 -5.33 1,388 -21.58 0.0026
2022-09-13 2022-06-30 13F/A-1 AON SHS CL A G0403H108 10,939 -500 2,950 0.0051
2022-08-02 2022-06-30 13F AON SHS CL A G0403H108 10,149 -110 2,921 0.0047
2022-11-14 2022-03-31 13F/A-2 AON SHS CL A G0403H108 5,436 -4,715 -46.45 1,770 -41.97 0.0026
2022-09-13 2022-03-31 13F/A-1 AON SHS CL A G0403H108 11,439 1,288 3,725 0.0052
2022-05-09 2022-03-31 13F AON SHS CL A G0403H108 10,259 108 3,190 0.0043
2022-01-27 2021-12-31 13F AON SHS CL A G0403H108 10,151 4,771 88.68 3,050 98.31 0.0038
2021-11-12 2021-09-30 13F AON SHS CL A G0403H108 5,380 -906 -14.41 1,538 2.40 0.0023
2021-07-29 2021-06-30 13F AON SHS CL A G0403H108 6,286 -10 -0.16 1,502 3.66 0.0023
2021-05-14 2021-03-31 13F AON SHS CL A G0403H108 6,296 91 1.47 1,449 10.53 0.0025
2021-02-12 2020-12-31 13F AON SHS CL A G0403H108 6,205 746 13.67 1,311 16.33 0.0023
2020-11-16 2020-09-30 13F AON SHS CL A G0403H108 5,459 187 3.55 1,127 10.93 0.0023
2020-08-14 2020-06-30 13F AON SHS CL A G0403H108 5,272 637 13.74 1,016 32.81 0.0024
2020-05-15 2020-03-31 13F AON SHS CL A G0408V102 4,635 -660 -12.46 765 -30.64 0.0023
2020-02-14 2019-12-31 13F AON SHS CL A G0408V102 5,295 178 3.48 1,103 11.19 0.0028
2019-11-14 2019-09-30 13F AON SHS CL A G0408V102 5,117 1,170 29.64 992 30.35 0.0028
2019-08-12 2019-06-30 13F AON SHS CL A G0408V102 3,947 -17,304 -81.43 761 -79.02 0.0022
2019-05-15 2019-03-31 13F AON SHS CL A G0408V102 21,251 138 0.65 3,627 18.18 0.0103
2019-02-13 2018-12-31 13F AON SHS CL A G0408V102 21,113 -5,862 -21.73 3,069 -26.01 0.0103
2018-11-13 2018-09-30 13F AON SHS CL A G0408V102 26,975 393 1.48 4,148 13.77 0.0118
2018-08-10 2018-06-30 13F AON SHS CL A G0408V102 26,582 -21 -0.08 3,646 -2.36 0.0112
2018-06-28 2018-03-31 13F/A-1 AON SHS CL A G0408V102 26,603 -52 -0.20 3,734 4.54 0.0121
2018-05-14 2018-03-31 13F AON SHS CL A G0408V102 18,134 -8,521 2,545
2018-02-12 2017-12-31 13F AON SHS CL A G0408V102 26,655 -970 -3.51 3,572 -11.50 0.0113
2017-11-13 2017-09-30 13F AON SHS CL A G0408V102 27,625 -117 -0.42 4,036 9.44 0.0134
2017-08-14 2017-06-30 13F AON SHS CL A G0408V102 27,742 1,778 6.85 3,688 19.62 0.0113
2017-05-15 2017-03-31 13F AON SHS CL A G0408V102 25,964 -1,836 -6.60 3,083 -0.55 0.0105
2017-02-13 2016-12-31 13F AON SHS CL A G0408V102 27,800 -1,174 -4.05 3,100 -4.88 0.0111
2016-11-14 2016-09-30 13F AON SHS CL A G0408V102 28,974 11,960 70.30 3,259 75.40 0.0112
2016-08-09 2016-06-30 13F AON SHS CL A G0408V102 17,014 2,767 19.42 1,858 24.87 0.0065
2016-05-13 2016-03-31 13F AON SHS CL A G0408V102 14,247 -8 -0.06 1,488 13.24 0.0051
2016-02-08 2015-12-31 13F AON SHS CL A G0408V102 14,255 11,035 342.70 1,314 361.05 0.0045
2015-11-13 2015-09-30 13F AON SHS CL A G0408V102 3,220 1,128 53.92 285 36.36 0.0010
2015-08-11 2015-06-30 13F AON SHS CL A G0408V102 2,092 -2,562 -55.05 209 -53.24 0.0007
2015-05-14 2015-03-31 13F AON SHS CL A G0408V102 4,654 -151 -3.14 447 -1.97 0.0014
2015-02-13 2014-12-31 13F/A-1 AON SHS CL A G0408V102 4,805 1,532 46.81 456 58.89 0.0014
2015-02-09 2014-12-31 13F AON SHS CL A G0408V102 3,355 314
2014-11-10 2014-09-30 13F AON SHS CL A G0408V102 3,273 -53 -1.59 287 -4.01 0.0009
2014-08-08 2014-06-30 13F AON SHS CL A G0408V102 3,326 250 8.13 299 15.89 0.0009
2014-02-11 2013-12-31 13F AON SHS CL A G0408V102 3,076 3,076 258 0.0008
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.