Aon plc
US ˙ NYSE ˙ IE00BLP1HW54

SecurityAON / Aon plc
InstitutionMascoma Wealth Management LLC
Latest Disclosed Ownership94 shares
Latest Disclosed Value $ 30,341
Mascoma Wealth Management LLC reports 1.05% decrease in ownership of AON / Aon plc

On April 30, 2026 - Mascoma Wealth Management LLC filed a 13F-HR form disclosing ownership of 94 shares of Aon plc (US:AON) valued at $30,341 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 95 shares of Aon plc. This represents a change in shares of -1.05% during the quarter. The current value of the position is $29,666 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)
2026-04-30 2026-03-31 13F AON PLC SHS CL A Stock G0403H108 94 -1 -1.05 30 -9.09 0.0063
2026-02-04 2025-12-31 13F AON PLC SHS CL A Stock G0403H108 95 -16 -14.41 34 -15.38 0.0072
2025-10-28 2025-09-30 13F AON PLC SHS CL A Stock G0403H108 111 0 0.00 40 0.00 0.0087
2025-07-22 2025-06-30 13F AON PLC SHS CL A Stock G0403H108 111 0 0.00 40 -11.36 0.0092
2025-04-24 2025-03-31 13F AON PLC SHS CL A Stock G0403H108 111 0 0.00 44 12.82 0.0110
2025-02-10 2024-12-31 13F AON PLC SHS CL A Stock G0403H108 111 0 0.00 40 2.63 0.0100
2024-11-05 2024-09-30 13F AON PLC SHS CL A Stock G0403H108 111 0 0.00 38 18.75 0.0096
2024-08-02 2024-06-30 13F AON PLC SHS CL A Stock G0403H108 111 0 0.00 33 -13.51 0.0086
2024-05-02 2024-03-31 13F AON PLC SHS CL A Stock G0403H108 111 -11 -9.02 37 5.71 0.0105
2024-01-24 2023-12-31 13F AON PLC SHS CL A Stock G0403H108 122 -54 -30.68 36 -38.60 0.0107
2023-10-13 2023-09-30 13F AON PLC SHS CL A Stock G0403H108 176 54 44.26 57 50.00 0.0178
2023-08-09 2023-06-30 13F AON PLC SHS CL A Stock G0403H108 122 -22 -15.28 38 -17.39 0.0117
2023-05-01 2023-03-31 13F AON PLC SHS CL A Stock G0403H108 144 0 0.00 47 6.98 0.0137
2023-01-24 2022-12-31 13F/A-1 AON PLC SHS CL A Stock G0403H108 144 -179 -55.42 43 -50.57 0.0137
2023-01-20 2022-12-31 13F AON PLC SHS CL A Stock G0403H108 323 0 0 0.0301
2022-10-18 2022-09-30 13F AON PLC SHS CL A Stock G0403H108 323 -1 -0.31 87 0.00 0.0301
2022-07-14 2022-06-30 13F AON PLC SHS CL A Stock G0403H108 324 3 0.93 87 -17.14 0.0297
2022-04-25 2022-03-31 13F AON PLC SHS CL A Stock G0403H108 321 110 52.13 105 66.67 0.0334
2022-01-21 2021-12-31 13F AON PLC SHS CL A Stock G0403H108 211 119 129.35 63 142.31 0.0218
2021-10-06 2021-09-30 13F AON PLC SHS CL A Stock G0403H108 92 92 26 0.0101
2021-07-06 2021-06-30 13F AON PLC SHS CL A Stock G0403H108 0 -100 -100.00 0 -100.00
2021-04-26 2021-03-31 13F AON PLC SHS CL A Stock G0403H108 100 100 23 0.0099
2019-11-21 2019-09-30 13F AON PLC SHS CL A Stock G0408V102 0 -100 -100.00 0 -100.00
2019-07-29 2019-06-30 13F AON PLC SHS CL A Stock G0408V102 100 0 0.00 19 11.76 0.0119
2019-04-23 2019-03-31 13F AON PLC SHS CL A Stock G0408V102 100 0 0.00 17 13.33 0.0114
2019-01-28 2018-12-31 13F AON PLC SHS CL A Stock G0408V102 100 0 0.00 15 0.00 0.0114
2018-11-08 2018-09-30 13F AON PLC SHS CL A Stock G0408V102 100 0 0.00 15 7.14 0.0099
2018-08-13 2018-06-30 13F AON PLC SHS CL A Stock G0408V102 100 0 0.00 14 0.00 0.0099
2018-04-24 2018-03-31 13F AON PLC SHS CL A Stock G0408V102 100 0 0.00 14 0.00 0.0092
2018-02-05 2017-12-31 13F AON PLC SHS CL A Stock G0408V102 100 0 0.00 14 -6.67 0.0086
2017-11-07 2017-09-30 13F AON PLC SHS CL A Stock G0408V102 100 0 0.00 15 15.38 0.0100
2017-07-13 2017-06-30 13F AON PLC SHS CL A Stock G0408V102 100 0 0.00 13 8.33 0.0088
2017-04-18 2017-03-31 13F AON PLC SHS CL A Stock G0408V102 100 0 0.00 12 9.09 0.0086
2017-01-30 2016-12-31 13F AON PLC SHS CL A Stock G0408V102 100 100 11 0.0081
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.