Aon plc
US ˙ NYSE ˙ IE00BLP1HW54

SecurityAON / Aon plc
InstitutionSource Capital Inc /de/
Latest Disclosed Ownership13,605 shares
Latest Disclosed Value $ 4,853,719
Source Capital Inc /de/ ownership in AON / Aon plc

On August 27, 2025 - Source Capital Inc /de/ filed a NPORT-P form disclosing ownership of 13,605 shares of Aon plc (US:AON) valued at $4,853,720 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 29, 2025 disclosing 13,605 shares of Aon plc. This represents a change in shares of 0.00% during the quarter. The current value of the position is $4,384,075 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)
2025-08-27 2025-06-30 NP Aon PLC - EC IE00BLP1HW54 13,605 0 0.00 4,854 -10.61 1.2842
2025-05-29 2025-03-31 NP Aon PLC - EC IE00BLP1HW54 13,605 -1,726 -11.26 5,430 -1.40 1.5113
2025-02-28 2024-12-31 NP Aon PLC - EC IE00BLP1HW54 15,331 -939 -5.77 5,506 -2.19 1.5427
2024-11-25 2024-09-30 NP Aon PLC - EC IE00BLP1HW54 16,270 0 0.00 5,629 17.86 1.4694
2024-08-29 2024-06-30 NP Aon PLC - EC IE00BLP1HW54 16,270 0 0.00 4,777 -12.03 1.2694
2024-05-29 2024-03-31 NP Aon PLC - EC IE00BLP1HW54 16,270 0 0.00 5,430 14.68 1.4582
2024-02-29 2023-12-31 NP Aon PLC - EC IE00BLP1HW54 16,270 -34 -0.21 4,735 -10.44 1.3137
2023-11-29 2023-09-30 NP Aon PLC - EC IE00BLP1HW54 16,304 -715 -4.20 5,286 -10.01 1.5198
2023-08-29 2023-06-30 NP Aon EC IE00BLP1HW54 17,019 -543 -3.09 5,875 6.09 1.6636
2023-05-30 2023-03-31 NP Aon EC IE00BLP1HW54 17,562 -923 -4.99 5,537 -0.20 1.6139
2023-02-28 2022-12-31 NP Aon EC IE00BLP1HW54 18,485 -4 -0.02 5,548 12.04 1.6571
2022-11-29 2022-09-30 NP Aon EC IE00BLP1HW54 18,489 -2,496 -11.89 4,953 -12.49 1.5527
2022-08-29 2022-06-30 NP Aon EC IE00BLP1HW54 20,985 -2,509 -10.68 5,659 -26.03 1.6881
2022-05-27 2022-03-31 NP Aon EC IE00BLP1HW54 23,494 -4,282 -15.42 7,650 -8.36 2.0637
2022-02-24 2021-12-31 NP Aon EC IE00BLP1HW54 27,776 -1,999 -6.71 8,348 -1.88 2.1803
2021-11-24 2021-09-30 NP Aon EC IE00BLP1HW54 29,775 -6,871 -18.75 8,509 -2.75 2.1318
2021-08-26 2021-06-30 NP Aon EC IE00BLP1HW54 36,646 0 0.00 8,750 3.76 2.1407
2021-05-28 2021-03-31 NP Aon EC IE00BLP1HW54 36,646 5,456 17.49 8,433 27.97 2.1006
2021-02-10 2020-12-31 NP Aon EC IE00BLP1HW54 31,190 10,389 49.94 6,590 53.55 1.7257
2020-11-27 2020-09-30 NP Aon EC IE00BLP1HW54 20,801 0 0.00 4,291 7.11 1.2239
2020-08-25 2020-06-30 NP Aon EC IE00BLP1HW54 20,801 4,422 27.00 4,006 48.21 1.1780
2020-05-29 2020-03-31 NP Aon EC GB00B5BT0K07 16,379 -4,764 -22.53 2,703 -38.61 0.8955
2020-02-10 2019-12-31 NP Aon EC GB00B5BT0K07 21,143 -4,497 -17.54 4,404 -11.28 1.1690
2019-11-27 2019-09-30 NP Aon EC GB00B5BT0K07 25,640 25,640 4,963 1.3875
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.