Aon plc
DE ˙ DB ˙ IE00BLP1HW54
272,30 € ↓ -1,70 (-0,62%)
2026-06-03
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionVanguard Group Inc
Latest Disclosed Ownership17,596,572 shares
Ownership 8.79%
Vanguard Group Inc ownership in 4VK / Aon plc

2024-02-13 - Vanguard Group Inc has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 17,596,572 shares of Aon plc (DE:4VK). This represents 8.79 percent ownership of the company. In their previous filing dated 2023-02-09 , Vanguard Group Inc had reported owning 18,011,439 shares, indicating a decrease of -2.30 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2024-02-13 2024-02-13 13G/A 18,011,439 17,596,572 -2.30 8.79 0.92
2023-02-09 2023-02-09 13G/A 16,724,965 18,011,439 7.69 8.71 14.76
2022-02-09 2022-02-09 13G/A 17,595,225 16,724,965 -4.95 7.59 -1.43
2021-02-10 2021-02-10 13G/A 18,204,629 17,595,225 -3.35 7.70 -1.79
2020-02-12 2020-02-12 13G/A 18,062,565 18,204,629 0.79 7.84 4.67
2019-02-11 2019-02-11 13G/A 17,583,612 18,062,565 2.72 7.49 6.54
2018-02-08 2018-02-08 13G/A 16,900,339 17,583,612 4.04 7.03 9.50
2017-02-09 2017-02-09 13G/A 15,937,229 16,900,339 6.04 6.42 10.50
2016-02-10 2016-02-10 13G/A 15,937,229 5.81
2015-02-11 2015-02-11 13G 15,099,363 5.29

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-01-29 2025-12-31 13F AON SHS CL A G0403H108 20,171,049 191,658 0.96 7,117,960 -0.09 0.1032
2025-11-07 2025-09-30 13F AON SHS CL A G0403H108 19,979,391 -310,352 -1.53 7,124,251 -1.58 0.1066
2025-08-11 2025-06-30 13F AON SHS CL A G0403H108 20,289,743 511,292 2.59 7,238,569 -8.30 0.1172
2025-05-09 2025-03-31 13F AON SHS CL A G0403H108 19,778,451 258,699 1.33 7,893,382 12.59 0.1427
2025-02-11 2024-12-31 13F AON SHS CL A G0403H108 19,519,752 88,361 0.45 7,010,714 4.28 0.1221
2024-11-13 2024-09-30 13F AON SHS CL A G0403H108 19,431,391 123,724 0.64 6,723,067 18.61 0.1204
2024-08-13 2024-06-30 13F AON SHS CL A G0403H108 19,307,667 1,645,995 9.32 5,668,345 -3.83 0.1089
2024-05-10 2024-03-31 13F AON SHS CL A G0403H108 17,661,672 64,500 0.37 5,894,053 15.09 0.1167
2024-03-11 2023-12-31 13F/A-1 AON SHS CL A G0403H108 17,597,172 38,761 0.22 5,121,129 -10.04 0.1119
2024-02-14 2023-12-31 13F AON SHS CL A G0403H108 17,597,172 38,761 5,121,129 0.0972
2023-12-18 2023-09-30 13F/A-1 AON SHS CL A G0403H108 17,558,411 -19,632 -0.11 5,692,788 -6.18 0.1398
2023-11-14 2023-09-30 13F AON SHS CL A G0403H108 17,558,411 -19,632 5,692,788 0.1398
2023-08-14 2023-06-30 13F AON SHS CL A G0403H108 17,578,043 -207,661 -1.17 6,067,940 8.21 0.1439
2023-07-14 2023-03-31 13F/A-1 AON SHS CL A G0403H108 17,785,704 -225,735 -1.25 5,607,655 3.73 0.1428
2023-05-15 2023-03-31 13F AON SHS CL A G0403H108 17,785,104 -226,335 5,607,465 0.1428
2023-02-10 2022-12-31 13F AON SHS CL A G0403H108 18,011,439 -23,018 -0.13 5,405,953 11.90 0.1472
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 18,034,457 111,820 0.62 4,830,890 -0.05 0.1421
2022-08-12 2022-06-30 13F AON SHS CL A G0403H108 17,922,637 25,001 0.14 4,833,376 -17.07 0.1359
2022-05-13 2022-03-31 13F AON SHS CL A G0403H108 17,897,636 1,172,671 7.01 5,828,008 15.94 0.1379
2022-02-14 2021-12-31 13F AON SHS CL A G0403H108 16,724,965 -327,736 -1.92 5,026,856 3.15 0.1141
2021-11-12 2021-09-30 13F AON SHS CL A G0403H108 17,052,701 96,676 0.57 4,873,151 20.37 0.1210
2021-08-13 2021-06-30 13F AON SHS CL A G0403H108 16,956,025 -483,592 -2.77 4,048,420 0.88 0.1007
2021-05-14 2021-03-31 13F AON SHS CL A G0403H108 17,439,617 -155,608 -0.88 4,013,030 7.95 0.1086
2021-02-12 2020-12-31 13F AON SHS CL A G0403H108 17,595,225 -473,512 -2.62 3,717,343 -0.27 0.1078
2020-11-16 2020-09-30 13F AON SHS CL A G0403H108 18,068,737 -256,745 -1.40 3,727,581 5.61 0.1234
2020-08-14 2020-06-30 13F AON SHS CL A G0403H108 18,325,482 -307,109 -1.65 3,529,489 14.78 0.1252
2020-05-15 2020-03-31 13F AON SHS CL A G0408V102 18,632,591 427,962 2.35 3,075,123 -18.90 0.1311
2020-02-14 2019-12-31 13F AON SHS CL A G0408V102 18,204,629 -45,591 -0.25 3,791,843 7.34 0.1293
2019-11-14 2019-09-30 13F AON SHS CL A G0408V102 18,250,220 -156,509 -0.85 3,532,695 -0.55 0.1310
2019-08-14 2019-06-30 13F AON SHS CL A G0408V102 18,406,729 275,773 1.52 3,552,130 14.77 0.1336
2019-05-15 2019-03-31 13F AON SHS CL A G0408V102 18,130,956 68,391 0.38 3,094,953 17.88 0.1214
2019-02-14 2018-12-31 13F AON SHS CL A G0408V102 18,062,565 162,486 0.91 2,625,575 -4.62 0.1180
2018-12-13 2018-09-30 13F/A-2 AON SHS CL A G0408V102 17,900,079 42,838 0.24 2,752,674 12.38 0.1076
2018-11-23 2018-09-30 13F/A-1 AON SHS CL A G0408V102 17,900,079 0 2,752,674 0.1076
2018-11-14 2018-09-30 13F AON SHS CL A G0408V102 17,900,079 42,838 2,752,674
2018-08-14 2018-06-30 13F AON SHS CL A G0408V102 17,857,241 199,843 1.13 2,449,477 -1.15 0.1025
2018-05-15 2018-03-31 13F AON SHS CL A G0408V102 17,657,398 73,786 0.42 2,477,864 5.16 0.1084
2018-02-14 2017-12-31 13F AON SHS CL A G0408V102 17,583,612 -34,241 -0.19 2,356,204 -8.46 0.1030
2017-11-14 2017-09-30 13F AON SHS CL A G0408V102 17,617,853 -194,466 -1.09 2,573,968 8.69 0.1203
2017-08-24 2017-06-30 13F/A-1 AON SHS CL A G0408V102 17,812,319 415,363 2.39 2,368,149 14.69 0.1166
2017-08-11 2017-06-30 13F AON SHS CL A G0408V102 17,812,319 415,363 2,368,149
2017-05-12 2017-03-31 13F AON SHS CL A G0408V102 17,396,956 496,617 2.94 2,064,845 9.55 0.1062
2017-02-14 2016-12-31 13F AON SHS CL A G0408V102 16,900,339 330,878 2.00 1,884,896 1.13 0.1051
2016-11-14 2016-09-30 13F AON SHS CL A G0408V102 16,569,461 359,155 2.22 1,863,898 5.27 0.1095
2016-08-10 2016-06-30 13F AON SHS CL A G0408V102 16,210,306 6,880 0.04 1,770,651 4.62 0.1100
2016-05-13 2016-03-31 13F AON SHS CL A G0408V102 16,203,426 266,197 1.67 1,692,448 15.17 0.1096
2016-02-08 2015-12-31 13F AON SHS CL A G0408V102 15,937,229 236,850 1.51 1,469,572 5.63 0.0988
2015-11-12 2015-09-30 13F/A-1 AON SHS CL A G0408V102 15,700,379 63,647 0.41 1,391,211 -10.74 0.0591
2015-11-12 2015-09-30 13F/A-1 AON SHS CL A G0408V102 15,868,131 231,399 1,406,075 0.0597
2015-11-12 2015-09-30 13F AON SHS CL A G0408V102 27,329,950 1,850,595
2015-08-13 2015-06-30 13F AON SHS CL A G0408V102 15,636,732 258,829 1.68 1,558,670 5.45 0.1054
2015-05-15 2015-03-31 13F/A-1 AON SHS CL A G0408V102 15,377,903 278,540 1.84 1,478,124 3.23 0.1002
2015-05-14 2015-03-31 13F AON SHS CL A G0408V102 15,377,903 1,478,124
2015-02-12 2014-12-31 13F AON SHS CL A G0408V102 15,099,363 160,512 1.07 1,431,873 9.33 0.1031
2014-11-12 2014-09-30 13F AON SHS CL A G0408V102 14,938,851 292,563 2.00 1,309,689 -0.74 0.1021
2014-08-11 2014-06-30 13F AON SHS CL A G0408V102 14,646,288 340,516 2.38 1,319,476 9.44 0.1040
2014-05-13 2014-03-31 13F AON SHS CL A G0408V102 14,305,772 388,292 2.79 1,205,672 3.27 0.1014
2014-02-12 2013-12-31 13F AON SHS CL A G0408V102 13,917,480 -92,846 -0.66 1,167,538 11.95 0.1027
2013-11-07 2013-09-30 13F AON SHS CL A G0408V102 14,010,326 493,289 3.65 1,042,929 19.90 0.1019
2013-08-13 2013-06-30 13F AON SHS CL A G0408V102 13,517,037 13,517,037 869,822 0.0913
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.