Aon plc
US ˙ NYSE ˙ IE00BLP1HW54

SecurityAON / Aon plc
InstitutionJohnson Financial Group, Inc.
Latest Disclosed Ownership215 shares
Latest Disclosed Value $ 69,398
Johnson Financial Group, Inc. reports 29.51% decrease in ownership of AON / Aon plc

On May 7, 2026 - Johnson Financial Group, Inc. filed a 13F-HR form disclosing ownership of 215 shares of Aon plc (US:AON) valued at $69,398 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 305 shares of Aon plc. This represents a change in shares of -29.51% during the quarter. The current value of the position is $69,282 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)
2026-05-07 2026-03-31 13F AON SHS CL A G0403H108 215 -90 -29.51 69 -35.51 0.0018
2026-02-12 2025-12-31 13F AON SHS CL A G0403H108 305 -3 -0.97 108 -1.83 0.0040
2025-11-13 2025-09-30 13F AON SHS CL A G0403H108 308 308 110 0.0041
2025-08-13 2025-06-30 13F AON SHS CL A G0403H108 0 -1,166 -100.00 0 -100.00
2025-05-15 2025-03-31 13F AON SHS CL A G0403H108 1,166 1,129 3,051.35 465 3,476.92 0.0228
2025-02-14 2024-12-31 13F AON SHS CL A G0403H108 37 -1,479 -97.56 14 -97.52 0.0006
2024-11-13 2024-09-30 13F AON SHS CL A G0403H108 1,516 1,187 360.79 525 445.83 0.0240
2024-08-14 2024-06-30 13F AON SHS CL A G0403H108 329 158 92.40 97 68.42 0.0047
2024-05-14 2024-03-31 13F AON SHS CL A G0403H108 171 -164 -48.96 57 -41.24 0.0031
2024-02-09 2023-12-31 13F/A-1 AON SHS CL A G0403H108 335 113 50.90 97 36.62 0.0053
2024-02-09 2023-12-31 13F AON SHS CL A G0403H108 335 113 97 0.0032
2023-11-14 2023-09-30 13F AON SHS CL A G0403H108 222 185 500.00 72 491.67 0.0050
2023-08-14 2023-06-30 13F AON SHS CL A G0403H108 37 37 13 0.0009
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 0 -26 -100.00 0 -100.00
2022-08-15 2022-06-30 13F AON SHS CL A G0403H108 26 -43 -62.32 7 -68.18 0.0005
2022-05-16 2022-03-31 13F AON SHS CL A G0403H108 69 0 0.00 22 4.76 0.0016
2022-02-14 2021-12-31 13F AON SHS CL A G0403H108 69 69 21 0.0013
2020-02-14 2019-12-31 13F AON SHS CL A G0408V102 0 -21 -100.00 0 -100.00
2019-11-12 2019-09-30 13F AON SHS CL A G0408V102 21 21 4 0.0004
2019-05-13 2019-03-31 13F AON SHS CL A G0408V102 0 -8 -100.00 0 -100.00
2019-02-11 2018-12-31 13F AON SHS CL A G0408V102 8 0 0.00 1 0.00 0.0001
2018-11-09 2018-09-30 13F AON SHS CL A G0408V102 8 8 1 0.0001
2017-08-10 2017-06-30 13F AON SHS CL A G0408V102 0 -125 -100.00 0 -100.00
2017-05-12 2017-03-31 13F AON SHS CL A G0408V102 125 -12 -8.76 15 0.00 0.0019
2017-02-07 2016-12-31 13F/A-1 AON SHS CL A G0408V102 137 0 0.00 15 0.00 0.0021
2017-02-02 2016-12-31 13F AON SHS CL A G0408V102 137 15
2016-11-14 2016-09-30 13F AON SHS CL A G0408V102 137 0 0.00 15 0.00 0.0020
2016-08-12 2016-06-30 13F AON SHS CL A G0408V102 137 -40 -22.60 15 -16.67 0.0021
2016-05-09 2016-03-31 13F AON SHS CL A G0408V102 177 -151 -46.04 18 -40.00 0.0036
2016-02-08 2015-12-31 13F AON SHS CL A G0408V102 328 0 0.00 30 3.45 0.0062
2015-11-02 2015-09-30 13F AON SHS CL A G0408V102 328 12 3.80 29 -6.45 0.0063
2015-08-11 2015-06-30 13F AON SHS CL A G0408V102 316 -240 -43.17 31 -42.59 0.0064
2015-05-12 2015-03-31 13F AON SHS CL A G0408V102 556 -895 -61.68 54 -60.87 0.0116
2015-02-10 2014-12-31 13F AON SHS CL A G0408V102 1,451 0 0.00 138 7.81 0.0320
2014-11-14 2014-09-30 13F AON SHS CL A G0408V102 1,451 -560 -27.85 128 -29.67 0.0334
2014-08-06 2014-06-30 13F AON PLC. SHS CL A G0408V102 2,011 -93 -4.42 182 2.82 0.0480
2014-05-14 2014-03-31 13F AON PLC. SHS CL A G0408V102 2,104 904 75.33 177 77.00 0.0517
2014-02-11 2013-12-31 13F AON SHS CL A G0408V102 1,200 600 100.00 100 122.22 0.0289
2013-11-14 2013-09-30 13F AON PLC. SHS CL A G0408V102 600 0 0.00 45 15.38 0.0137
2013-08-14 2013-06-30 13F AON PLC. SHS CL A G0408V102 600 600 39 0.0109
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.