Aon plc
DE ˙ DB ˙ IE00BLP1HW54
270,60 € ↓ -1,70 (-0,62%)
2026-06-04
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionTower Bridge Advisors
Latest Disclosed Ownership33,476 shares
Latest Disclosed Value $ 10,805,383
Tower Bridge Advisors reports 0.34% increase in ownership of 4VK / Aon plc

On May 12, 2026 - Tower Bridge Advisors filed a 13F-HR form disclosing ownership of 33,476 shares of Aon plc (DE:4VK) valued at $9,376,628 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 33,362 shares of Aon plc. This represents a change in shares of 0.34% during the quarter. The current value of the position is $9,058,606 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)
2026-05-12 2026-03-31 13F Aon Plc Common G0403H108 33,476 114 0.34 10,805 -8.21 0.7577
2026-02-13 2025-12-31 13F AON PLC SHS CL A COMMON G0403H108 33,362 -1,920 -5.44 11,773 -6.42 1.1890
2025-11-12 2025-09-30 13F AON PLC SHS CL A COMMON G0403H108 35,282 -5,328 -13.12 12,581 -13.17 1.2564
2025-08-11 2025-06-30 13F AON PLC SHS CL A COMMON G0403H108 40,610 -2,312 -5.39 14,488 -15.42 1.5575
2025-05-08 2025-03-31 13F AON PLC SHS CL A COMMON G0403H108 42,922 -1,092 -2.48 17,130 8.36 1.9140
2025-02-05 2024-12-31 13F AON PLC SHS CL A COMMON G0403H108 44,014 -621 -1.39 15,808 2.36 1.6835
2024-11-06 2024-09-30 13F AON PLC SHS CL A COMMON G0403H108 44,635 -862 -1.89 15,443 15.62 1.6026
2024-07-24 2024-06-30 13F AON PLC SHS CL A COMMON G0403H108 45,497 -2,732 -5.66 13,357 -17.01 1.4845
2024-04-29 2024-03-31 13F AON PLC SHS CL A COMMON G0403H108 48,229 122 0.25 16,095 14.96 1.6381
2024-02-14 2023-12-31 13F AON PLC SHS CL A COMMON G0403H108 48,107 -814 -1.66 14,000 -11.73 1.2042
2023-11-01 2023-09-30 13F AON PLC SHS CL A COMMON G0403H108 48,921 -373 -0.76 15,861 -6.79 1.4681
2023-07-20 2023-06-30 13F AON SHS CL A G0403H108 49,294 -2,819 -5.41 17,016 3.57 1.5598
2023-04-26 2023-03-31 13F AON PLC SHS CL A COMMON G0403H108 52,113 -4,110 -7.31 16,431 -2.63 1.3454
2023-01-27 2022-12-31 13F AON PLC SHS CL A COMMON G0403H108 56,223 -1,180 -2.06 16,875 9.74 1.4015
2022-11-14 2022-09-30 13F AON PLC SHS CL A COMMON G0403H108 57,403 -308 -0.53 15,377 -1.20 1.3663
2022-07-21 2022-06-30 13F AON PLC SHS CL A COMMON G0403H108 57,711 -994 -1.69 15,564 -18.59 1.2693
2022-05-05 2022-03-31 13F AON PLC SHS CL A COMMON G0403H108 58,705 -207 -0.35 19,116 7.96 1.2778
2022-02-09 2021-12-31 13F AON PLC SHS CL A COMMON G0403H108 58,912 -450 -0.76 17,707 4.38 1.0872
2021-10-28 2021-09-30 13F AON PLC SHS CL A COMMON G0403H108 59,362 -408 -0.68 16,964 18.87 1.1317
2021-08-10 2021-06-30 13F AON PLC SHS CL A COMMON G0403H108 59,770 957 1.63 14,271 5.45 0.9512
2021-05-12 2021-03-31 13F AON PLC SHS CL A COMMON G0403H108 58,813 1,952 3.43 13,533 12.65 1.0189
2021-02-11 2020-12-31 13F AON PLC SHS CL A COMMON G0403H108 56,861 25,669 82.29 12,013 86.71 0.9784
2020-11-13 2020-09-30 13F AON PLC SHS CL A COMMON G0403H108 31,192 31,192 6,435 0.6574
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.