Aon plc
DE ˙ DB ˙ IE00BLP1HW54
272,30 € ↓ -1,70 (-0,62%)
2026-06-03
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionOssiam
Latest Disclosed Ownership4,984 shares
Latest Disclosed Value $ 1,608,736
Ossiam reports 17.19% increase in ownership of 4VK / Aon plc

On May 14, 2026 - Ossiam filed a 13F-HR form disclosing ownership of 4,984 shares of Aon plc (DE:4VK) valued at $1,396,018 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 4,253 shares of Aon plc. This represents a change in shares of 17.19% during the quarter. The current value of the position is $1,357,143 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)
2026-05-14 2026-03-31 13F AON SHS CL A G0403H108 4,984 731 17.19 1,609 7.20 0.0283
2026-02-13 2025-12-31 13F AON SHS CL A G0403H108 4,253 -1,717 -28.76 1,501 -29.51 0.0300
2025-11-14 2025-09-30 13F AON SHS CL A G0403H108 5,970 -754 -11.21 2,129 -11.26 0.0274
2025-08-13 2025-06-30 13F AON SHS CL A G0403H108 6,724 -3,822 -36.24 2,399 -43.01 0.0270
2025-05-14 2025-03-31 13F AON SHS CL A G0403H108 10,546 -14,334 -57.61 4,209 -52.90 0.0588
2025-02-13 2024-12-31 13F AON SHS CL A G0403H108 24,880 14,966 150.96 8,936 160.50 0.1543
2024-11-13 2024-09-30 13F AON SHS CL A G0403H108 9,914 -898 -8.31 3,430 8.07 0.0663
2024-08-13 2024-06-30 13F AON SHS CL A G0403H108 10,812 -29,248 -73.01 3,174 -76.26 0.0602
2024-05-13 2024-03-31 13F AON SHS CL A G0403H108 40,060 -8,196 -16.98 13,369 -4.81 0.2342
2024-02-13 2023-12-31 13F AON SHS CL A G0403H108 48,256 -3,503 -6.77 14,043 -16.32 0.2262
2023-11-14 2023-09-30 13F AON SHS CL A G0403H108 51,759 28,320 120.82 16,781 107.40 0.2965
2023-08-11 2023-06-30 13F AON SHS CL A G0403H108 23,439 -14,341 -37.96 8,091 -32.07 0.1454
2023-05-12 2023-03-31 13F AON SHS CL A G0403H108 37,780 -25,264 -40.07 11,912 -37.05 0.2475
2023-02-13 2022-12-31 13F AON SHS CL A G0403H108 63,044 246 0.39 18,922 12.48 0.4905
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 62,798 37,089 144.26 16,822 142.64 0.4872
2022-08-12 2022-06-30 13F AON SHS CL A G0403H108 25,709 23,234 938.75 6,933 760.17 0.2086
2022-05-13 2022-03-31 13F AON SHS CL A G0403H108 2,475 -10,986 -81.61 806 -80.08 0.0211
2022-02-14 2021-12-31 13F AON SHS CL A G0403H108 13,461 4,244 46.05 4,046 53.61 0.1060
2021-11-12 2021-09-30 13F AON SHS CL A G0403H108 9,217 -788 -7.88 2,634 1.23 0.0745
2021-08-13 2021-06-30 13F AON SHS CL A G0403H108 10,005 459 4.81 2,602 18.43 0.0706
2021-05-17 2021-03-31 13F AON SHS CL A G0403H108 9,546 -12,077 -55.85 2,197 -51.90 0.0684
2021-02-12 2020-12-31 13F AON SHS CL A G0403H108 21,623 19,894 1,150.61 4,568 1,179.55 0.1594
2020-11-12 2020-09-30 13F AON SHS CL A G0403H108 1,729 1,365 375.00 357 410.00 0.0149
2020-08-13 2020-06-30 13F AON SHS CL A G0403H108 364 -2,656 -87.95 70 -85.94 0.0045
2020-05-14 2020-03-31 13F AON SHS CL A G0408V102 3,020 2,139 242.79 498 170.65 0.0339
2020-02-14 2019-12-31 13F AON SHS CL A G0408V102 881 339 62.55 184 75.24 0.0140
2019-11-13 2019-09-30 13F AON SHS CL A G0408V102 542 -9 -1.63 105 -0.94 0.0073
2019-08-13 2019-06-30 13F AON SHS CL A G0408V102 551 551 106 0.0083
2019-05-15 2019-03-31 13F AON SHS CL A G0408V102 0 -11,225 -100.00 0 -100.00
2019-02-14 2018-12-31 13F AON SHS CL A G0408V102 11,225 11,225 1,632 0.2453
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.