Aon plc
US ˙ NYSE ˙ IE00BLP1HW54

SecurityAON / Aon plc
InstitutionSilvercrest Asset Management Group Llc
Latest Disclosed Ownership22,735 shares
Latest Disclosed Value $ 7,338,403
Silvercrest Asset Management Group Llc reports 1.57% decrease in ownership of AON / Aon plc

On May 15, 2026 - Silvercrest Asset Management Group Llc filed a 13F-HR form disclosing ownership of 22,735 shares of Aon plc (US:AON) valued at $7,338,403 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 23,098 shares of Aon plc. This represents a change in shares of -1.57% during the quarter. The current value of the position is $7,175,166 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F AON PLC SHS CL A COM G0403H108 22,735 -363 -1.57 7,338 -9.96 0.0530
2026-02-17 2025-12-31 13F AON PLC SHS CL A COM G0403H108 23,098 -6,967 -23.17 8,151 -23.97 0.0560
2025-11-14 2025-09-30 13F AON PLC SHS CL A COM G0403H108 30,065 3,452 12.97 10,721 12.91 0.0709
2025-08-14 2025-06-30 13F AON SHS CL A G0403H108 26,613 98 0.37 9,494 -10.27 0.0638
2025-05-15 2025-03-31 13F AON SHS CL A G0403H108 26,515 105 0.40 10,582 11.56 0.0757
2025-02-14 2024-12-31 13F AON SHS CL A G0403H108 26,410 -2,488 -8.61 9,485 -5.13 0.0634
2024-11-14 2024-09-30 13F AON PLC SHS CL A COM G0403H108 28,898 333 1.17 9,998 19.22 0.0680
2024-08-15 2024-06-30 13F/A-1 AON PLC SHS CL A COM G0403H108 28,565 -187 -0.65 8,386 -12.60 0.0575
2024-08-14 2024-06-30 13F AON PLC SHS CL A COM G0403H108 57,130 28,378 16,772 0.0383
2024-05-15 2024-03-31 13F AON PLC SHS CL A COM G0403H108 28,752 -1,555 -5.13 9,595 8.80 0.0649
2024-02-14 2023-12-31 13F AON PLC SHS CL A COM G0403H108 30,307 931 3.17 8,820 -7.40 0.0624
2023-11-14 2023-09-30 13F AON PLC SHS CL A COM G0403H108 29,376 156 0.53 9,524 -5.57 0.0723
2023-08-14 2023-06-30 13F AON PLC SHS CL A COM G0403H108 29,220 889 3.14 10,087 12.92 0.0719
2023-05-15 2023-03-31 13F AON PLC SHS CL A COM G0403H108 28,331 -1,419 -4.77 8,932 0.03 0.0678
2023-02-14 2022-12-31 13F AON PLC SHS CL A COM G0403H108 29,750 -400 -1.33 8,929 10.56 0.0686
2022-11-14 2022-09-30 13F AON PLC SHS CL A COM G0403H108 30,150 -1,128 -3.61 8,076 -4.26 0.0664
2022-08-15 2022-06-30 13F AON PLC SHS CL A COM G0403H108 31,278 -635 -1.99 8,435 -18.83 0.0641
2022-05-16 2022-03-31 13F AON PLC SHS CL A COM G0403H108 31,913 -9,905 -23.69 10,392 -17.32 0.0675
2022-02-14 2021-12-31 13F AON PLC SHS CL A COM G0403H108 41,818 729 1.77 12,569 7.04 0.0796
2021-11-15 2021-09-30 13F AON PLC SHS CL A COM G0403H108 41,089 240 0.59 11,742 20.39 0.0791
2021-08-16 2021-06-30 13F AON PLC SHS CL A COM G0403H108 40,849 1,582 4.03 9,753 7.93 0.0640
2021-05-17 2021-03-31 13F AON PLC SHS CL A COM G0403H108 39,267 1,606 4.26 9,036 13.56 0.0610
2021-02-16 2020-12-31 13F AON PLC SHS CL A COM G0403H108 37,661 469 1.26 7,957 3.70 0.0581
2020-11-16 2020-09-30 13F AON PLC SHS CL A COM G0403H108 37,192 1,151 3.19 7,673 10.55 0.0658
2020-08-14 2020-06-30 13F AON PLC SHS CL A COM G0403H108 36,041 482 1.36 6,941 18.27 0.0616
2020-05-15 2020-03-31 13F AON PLC SHS CL A COM G0408V102 35,559 -263 -0.73 5,869 -21.34 0.0629
2020-02-14 2019-12-31 13F AON PLC SHS CL A COM G0408V102 35,822 4 0.01 7,461 7.62 0.0579
2019-11-14 2019-09-30 13F AON PLC SHS CL A COM G0408V102 35,818 740 2.11 6,933 2.42 0.0572
2019-08-14 2019-06-30 13F AON PLC SHS CL A COM G0408V102 35,078 1,240 3.66 6,769 17.19 0.0634
2019-05-15 2019-03-31 13F AON PLC SHS CL A COM G0408V102 33,838 -360 -1.05 5,776 16.19 0.0568
2019-02-14 2018-12-31 13F AON PLC SHS CL A COM G0408V102 34,198 103 0.30 4,971 -5.19 0.0548
2018-11-14 2018-09-30 13F AON PLC SHS CL A COM G0408V102 34,095 1,079 3.27 5,243 15.77 0.0476
2018-08-14 2018-06-30 13F AON PLC SHS CL A COM G0408V102 33,016 12,662 62.21 4,529 58.58 0.0424
2018-05-15 2018-03-31 13F AON PLC SHS CL A COM G0408V102 20,354 795 4.06 2,856 8.97 0.0278
2018-02-14 2017-12-31 13F AON PLC SHS CL A COM G0408V102 19,559 301 1.56 2,621 -6.86 0.0244
2017-11-14 2017-09-30 13F AON PLC SHS CL A COM G0408V102 19,258 103 0.54 2,814 10.48 0.0280
2017-08-14 2017-06-30 13F AON PLC SHS CL A COM G0408V102 19,155 1,645 9.39 2,547 22.57 0.0273
2017-05-15 2017-03-31 13F AON PLC SHS CL A COM G0408V102 17,510 279 1.62 2,078 8.12 0.0222
2017-02-14 2016-12-31 13F AON PLC SHS CL A COM G0408V102 17,231 136 0.80 1,922 -0.05 0.0215
2016-11-14 2016-09-30 13F AON PLC SHS CL A COM G0408V102 17,095 721 4.40 1,923 7.49 0.0231
2016-08-15 2016-06-30 13F AON PLC SHS CL A COM G0408V102 16,374 -10,926 -40.02 1,789 -37.25 0.0227
2016-05-16 2016-03-31 13F AON PLC SHS CL A COM G0408V102 27,300 -1,620 -5.60 2,851 6.90 0.0393
2016-02-16 2015-12-31 13F AON PLC SHS CL A COM G0408V102 28,920 -1,230 -4.08 2,667 -0.19 0.0369
2015-11-16 2015-09-30 13F AON PLC SHS CL A COM G0408V102 30,150 -7,150 -19.17 2,672 -28.13 0.0407
2015-08-14 2015-06-30 13F AON PLC SHS CL A COM G0408V102 37,300 2,090 5.94 3,718 9.87 0.0497
2015-05-15 2015-03-31 13F AON PLC SHS CL A COM G0408V102 35,210 -5,170 -12.80 3,384 -11.62 0.0480
2015-02-17 2014-12-31 13F AON PLC SHS CL A COM G0408V102 40,380 2,220 5.82 3,829 14.47 0.0555
2014-11-14 2014-09-30 13F AON PLC SHS CL A COM G0408V102 38,160 1,580 4.32 3,345 1.52 0.0517
2014-08-14 2014-06-30 13F AON PLC SHS CL A COM G0408V102 36,580 36,580 3,295 0.0494
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.