Aon plc
DE ˙ DB ˙ IE00BLP1HW54
272,30 € ↓ -1,70 (-0,62%)
2026-06-03
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionAssetmark, Inc
Latest Disclosed Ownership80,499 shares
Latest Disclosed Value $ 25,983,612
Assetmark, Inc reports 504.30% increase in ownership of 4VK / Aon plc

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 80,499 shares of Aon plc (DE:4VK) valued at $22,547,770 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 13,321 shares of Aon plc. This represents a change in shares of 504.30% during the quarter. The current value of the position is $21,919,878 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)
2026-05-06 2026-03-31 13F AON SHS CL A G0403H108 80,499 67,178 504.30 25,984 452.83 0.0530
2026-01-23 2025-12-31 13F AON SHS CL A G0403H108 13,321 696 5.51 4,701 4.42 0.0096
2025-11-06 2025-09-30 13F AON SHS CL A G0403H108 12,625 1,380 12.27 4,502 12.22 0.0097
2025-08-04 2025-06-30 13F AON SHS CL A G0403H108 11,245 1,611 16.72 4,012 4.34 0.0095
2025-05-06 2025-03-31 13F AON SHS CL A G0403H108 9,634 692 7.74 3,845 19.71 0.0106
2025-02-06 2024-12-31 13F AON SHS CL A G0403H108 8,942 898 11.16 3,212 15.38 0.0087
2024-11-01 2024-09-30 13F AON SHS CL A G0403H108 8,044 606 8.15 2,783 27.49 0.0080
2024-08-13 2024-06-30 13F AON SHS CL A G0403H108 7,438 740 11.05 2,184 -2.33 0.0068
2024-05-07 2024-03-31 13F AON SHS CL A G0403H108 6,698 753 12.67 2,235 29.19 0.0073
2024-02-09 2023-12-31 13F AON SHS CL A G0403H108 5,945 888 17.56 1,730 5.55 0.0063
2023-10-27 2023-09-30 13F AON SHS CL A G0403H108 5,057 469 10.22 1,640 3.54 0.0066
2023-08-11 2023-06-30 13F AON PLC SHS CL A SHS CL A G0403H108 4,588 409 9.79 1,584 20.20 0.0062
2023-05-05 2023-03-31 13F AON PLC SHS CL A SHS CL A G0403H108 4,179 1,602 62.17 1,318 70.38 0.0054
2023-02-10 2022-12-31 13F AON SHS CL A G0403H108 2,577 -16 -0.62 773 11.22 0.0034
2022-11-01 2022-09-30 13F AON SHS CL A G0403H108 2,593 317 13.93 695 13.19 0.0032
2022-08-03 2022-06-30 13F AON PLC SHS CL A SHS CL A G0403H108 2,276 423 22.83 614 1.82 0.0028
2022-05-13 2022-03-31 13F AON PLC SHS CL A SHS CL A G0403H108 1,853 488 35.75 603 47.07 0.0025
2022-02-14 2021-12-31 13F AON PLC SHS CL A SHS CL A G0403H108 1,365 964 240.40 410 256.52 0.0017
2021-11-12 2021-09-30 13F AON PLC SHS CL A CL A G0403H108 401 69 20.78 115 45.57 0.0005
2021-08-16 2021-06-30 13F AON PLC SHS CL A CL A G0403H108 332 59 21.61 79 25.40 0.0004
2021-05-14 2021-03-31 13F AON CL A G0403H108 273 -28,536 -99.05 63 -98.97 0.0003
2021-02-10 2020-12-31 13F AON PLC SHS CL A CL A G0403H108 28,809 -67 -0.23 6,087 2.18 0.0339
2020-11-13 2020-09-30 13F AON PLC SHS CL A CL A G0403H108 28,876 4,006 16.11 5,957 24.36 0.0384
2020-08-11 2020-06-30 13F AON PLC SHS CL A ADDED CL A G0403H108 24,870 24,870 4,790 0.0343
2020-05-12 2020-03-31 13F AON PLC SHS CL A CL A G0408V102 0 -32,315 -100.00 0 -100.00
2020-02-11 2019-12-31 13F AON PLC SHS CL A CL A G0408V102 32,315 30,097 1,356.94 6,731 1,469.00 0.0511
2019-11-13 2019-09-30 13F AON PLC SHS CL A CL A G0408V102 2,218 95 4.47 429 4.63 0.0036
2019-08-14 2019-06-30 13F AON PLC SHS CL A CL A G0408V102 2,123 1,287 153.95 410 186.71 0.0033
2019-05-14 2019-03-31 13F AON PLC SHS CL A CL A G0408V102 836 -1,546 -64.90 143 -58.67 0.0013
2019-02-13 2018-12-31 13F AON PLC SHS CL A CL A G0408V102 2,382 61 2.63 346 -3.08 0.0033
2018-11-13 2018-09-30 13F AON PLC SHS CL A CL A G0408V102 2,321 304 15.07 357 28.88 0.0032
2018-08-01 2018-06-30 13F AON PLC SHS CL A CL A G0408V102 2,017 195 10.70 277 8.20 0.0027
2018-05-16 2018-03-31 13F AON PLC SHS CL A CL A G0408V102 1,822 -567 -23.73 256 -20.00 0.0026
2018-02-13 2017-12-31 13F AON PLC SHS CL A CL A G0408V102 2,389 180 8.15 320 -0.93 0.0033
2017-11-08 2017-09-30 13F AON PLC SHS CL A CL A G0408V102 2,209 600 37.29 323 50.93 0.0037
2017-08-14 2017-06-30 13F AON PLC SHS CL A CL A G0408V102 1,609 -696 -30.20 214 -21.90 0.0027
2017-09-15 2017-03-31 13F/A-1 AON PLC SHS CL A CL A G0408V102 2,305 1,514 191.40 274 211.36 0.0036
2017-05-08 2017-03-31 13F AON PLC SHS CL A CL A G0408V102 2,305 1,514 274
2017-09-15 2016-12-31 13F/A-1 AON PLC SHS CL A CL A G0408V102 791 266 50.67 88 49.15 0.0013
2017-02-14 2016-12-31 13F AON PLC SHS CL A CL A G0408V102 791 266 88
2017-09-14 2016-09-30 13F/A-1 AON PLC SHS CL A CL A G0408V102 525 -175 -25.00 59 -22.37 0.0009
2016-11-04 2016-09-30 13F AON PLC SHS CL A CL A G0408V102 525 -175 59
2017-09-14 2016-06-30 13F/A-1 AON PLC SHS CL A CL A G0408V102 700 316 82.29 76 90.00 0.0013
2016-08-08 2016-06-30 13F AON PLC SHS CL A CL A G0408V102 700 316 76
2017-09-14 2016-03-31 13F/A-1 AON PLC SHS CL A CL A G0408V102 384 -139 -26.58 40 -16.67 0.0007
2016-05-13 2016-03-31 13F AON PLC SHS CL A CL A G0408V102 384 -139 40
2017-09-14 2015-12-31 13F/A-1 AON PLC SHS CL A CL A G0408V102 523 523 48 0.0009
2016-02-12 2015-12-31 13F AON PLC SHS CL A CL A G0408V102 523 523 48
2015-11-10 2015-09-30 13F AON PLC SHS CL A CL A G0408V102 0 0 0 0.0000
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.