Aon plc
US ˙ NYSE ˙ IE00BLP1HW54

SecurityAON / Aon plc
InstitutionFirst Foundation Advisors
Latest Disclosed Ownership8,678 shares
Latest Disclosed Value $ 2,800,932
First Foundation Advisors reports 12.15% decrease in ownership of AON / Aon plc

On May 4, 2026 - First Foundation Advisors filed a 13F-HR form disclosing ownership of 8,678 shares of Aon plc (US:AON) valued at $2,801,085 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 9,878 shares of Aon plc. This represents a change in shares of -12.15% during the quarter. The current value of the position is $2,738,777 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)
2026-05-04 2026-03-31 13F AON SHS CL A G0403H108 8,678 -1,200 -12.15 2,801 -19.66 0.1015
2026-02-04 2025-12-31 13F AON SHS CL A G0403H108 9,878 -1,303 -11.65 3,486 -12.57 0.1313
2025-11-17 2025-09-30 13F AON SHS CL A G0403H108 11,181 -2,300 -17.06 3,987 -17.11 0.1474
2025-08-14 2025-06-30 13F AON SHS CL A G0403H108 13,481 -2,542 -15.86 4,809 -24.79 0.1782
2025-05-08 2025-03-31 13F AON SHS CL A G0403H108 16,023 -4,406 -21.57 6,395 -12.85 0.2603
2025-02-13 2024-12-31 13F AON SHS CL A G0403H108 20,429 -14,041 -40.73 7,337 -38.48 0.2761
2024-11-14 2024-09-30 13F AON SHS CL A G0403H108 34,470 -1,612 -4.47 11,926 12.58 0.4492
2024-08-06 2024-06-30 13F AON SHS CL A G0403H108 36,082 14,368 66.17 10,593 46.19 0.4048
2024-05-10 2024-03-31 13F AON SHS CL A G0403H108 21,714 -984 -4.34 7,246 9.70 0.2900
2024-02-14 2023-12-31 13F AON SHS CL A G0403H108 22,698 -6,282 -21.68 6,605 -29.70 0.3010
2023-11-15 2023-09-30 13F AON SHS CL A G0403H108 28,980 823 2.92 9,396 -3.33 0.4389
2023-08-14 2023-06-30 13F AON SHS CL A G0403H108 28,157 -1,082 -3.70 9,720 5.44 0.4200
2023-05-12 2023-03-31 13F AON SHS CL A G0403H108 29,239 -443 -1.49 9,219 3.48 0.4239
2023-02-14 2022-12-31 13F AON SHS CL A G0403H108 29,682 -3,349 -10.14 8,909 0.68 0.4267
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 33,031 -654 -1.94 8,848 -2.60 0.4333
2022-08-12 2022-06-30 13F AON SHS CL A G0403H108 33,685 -10,491 -23.75 9,084 -36.85 0.4012
2022-05-05 2022-03-31 13F AON SHS CL A G0403H108 44,176 -31,646 -41.74 14,385 -36.88 0.5193
2022-02-14 2021-12-31 13F AON SHS CL A G0403H108 75,822 -2,747 -3.50 22,789 1.50 0.7832
2021-11-15 2021-09-30 13F AON SHS CL A G0403H108 78,569 -1,640 -2.04 22,452 17.24 0.8381
2021-08-13 2021-06-30 13F AON SHS CL A G0403H108 80,209 53 0.07 19,151 3.83 0.7375
2021-05-18 2021-03-31 13F AON SHS CL A G0403H108 80,156 -2,878 -3.47 18,445 5.14 0.7909
2021-02-16 2020-12-31 13F AON SHS CL A G0403H108 83,034 3,969 5.02 17,543 7.55 0.7777
2020-11-12 2020-09-30 13F Aon SHS CL A G0403H108 79,065 9,378 13.46 16,311 21.52 0.7569
2020-08-14 2020-06-30 13F Aon SHS CL A G0403H108 69,687 69,687 13,422 0.6919
2017-11-14 2017-09-30 13F Aon SHS CL A G0408V102 0 -18,943 -100.00 0 -100.00
2017-08-14 2017-06-30 13F Aon SHS CL A G0408V102 18,943 10 0.05 2,518 12.06 0.1481
2017-05-05 2017-03-31 13F Aon SHS CL A G0408V102 18,933 -160 -0.84 2,247 5.54 0.1390
2017-02-14 2016-12-31 13F Aon SHS CL A G0408V102 19,093 46 0.24 2,129 -0.65 0.1394
2016-11-14 2016-09-30 13F Aon SHS CL A G0408V102 19,047 -99 -0.52 2,143 2.49 0.1482
2016-08-16 2016-06-30 13F Aon SHS CL A G0408V102 19,146 137 0.72 2,091 5.34 0.1500
2016-05-13 2016-03-31 13F Aon SHS CL A G0408V102 19,009 86 0.45 1,985 13.75 0.1441
2016-02-16 2015-12-31 13F Aon SHS CL A G0408V102 18,923 -543 -2.79 1,745 1.16 0.1193
2015-11-16 2015-09-30 13F Aon SHS CL A G0408V102 19,466 0 0.00 1,725 -11.08 0.1416
2015-08-13 2015-06-30 13F Aon SHS CL A G0408V102 19,466 -102 -0.52 1,940 3.14 0.1541
2015-05-14 2015-03-31 13F Aon SHS CL A G0408V102 19,568 -1,874 -8.74 1,881 -7.48 0.1573
2015-02-17 2014-12-31 13F Aon SHS CL A G0408V102 21,442 -146,160 -87.21 2,033 -86.16 0.1791
2014-11-14 2014-09-30 13F Aon SHS CL A G0408V102 167,602 5,107 3.14 14,694 0.38 1.4622
2014-08-15 2014-06-30 13F Aon SHS CL A G0408V102 162,495 5,691 3.63 14,639 10.78 1.5956
2014-05-15 2014-03-31 13F Aon SHS CL A G0408V102 156,804 -121,588 -43.68 13,215 -43.41 1.6382
2014-02-14 2013-12-31 13F Aon SHS CL A G0408V102 278,392 -725 -0.26 23,354 12.40 3.1415
2013-11-15 2013-09-30 13F Aon SHS CL A G0408V102 279,117 11,013 4.11 20,778 20.43 3.2323
2013-08-09 2013-06-30 13F Aon SHS CL A G0408V102 268,104 268,104 17,253 3.3789
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.