Aon plc
DE ˙ DB ˙ IE00BLP1HW54
276,10 € ↑5,50 (2,03%)
2026-06-05
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionEnterprise Financial Services Corp
Latest Disclosed Ownership4,397 shares
Latest Disclosed Value $ 1,419,263
Enterprise Financial Services Corp reports 3.06% decrease in ownership of 4VK / Aon plc

On May 5, 2026 - Enterprise Financial Services Corp filed a 13F-HR form disclosing ownership of 4,397 shares of Aon plc (DE:4VK) valued at $1,231,600 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 4,536 shares of Aon plc. This represents a change in shares of -3.06% during the quarter. The current value of the position is $1,214,012 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)
2026-05-05 2026-03-31 13F AON SHS CL A G0403H108 4,397 -139 -3.06 1,419 -11.31 0.3991
2026-01-14 2025-12-31 13F AON SHS CL A G0403H108 4,536 46 1.02 1,601 -0.06 0.8127
2025-10-15 2025-09-30 13F AON SHS CL A G0403H108 4,490 -103 -2.24 1,601 -2.26 0.8253
2025-08-12 2025-06-30 13F AON SHS CL A G0403H108 4,593 -337 -6.84 1,639 -16.73 0.8745
2025-05-14 2025-03-31 13F AON SHS CL A G0403H108 4,930 360 7.88 1,968 19.87 1.1633
2025-02-07 2024-12-31 13F AON SHS CL A G0403H108 4,570 -7 -0.15 1,641 3.66 0.9132
2024-11-12 2024-09-30 13F AON SHS CL A G0403H108 4,577 19 0.42 1,584 18.31 0.9229
2024-08-13 2024-06-30 13F AON SHS CL A G0403H108 4,558 -67 -1.45 1,338 -13.29 0.8238
2024-05-14 2024-03-31 13F AON SHS CL A G0403H108 4,625 7 0.15 1,543 14.89 0.9291
2024-02-09 2023-12-31 13F AON SHS CL A G0403H108 4,618 -110 -2.33 1,344 -12.34 0.8189
2023-10-31 2023-09-30 13F AON SHS CL A G0403H108 4,728 18 0.38 1,533 -5.72 1.0592
2023-08-14 2023-06-30 13F AON SHS CL A G0403H108 4,710 1 0.02 1,626 9.50 1.0341
2023-05-15 2023-03-31 13F AON SHS CL A G0403H108 4,709 9 0.19 1,485 5.25 0.9699
2023-02-14 2022-12-31 13F AON SHS CL A G0403H108 4,700 -313 -6.24 1,411 4.99 0.9741
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 5,013 32 0.64 1,343 0.00 1.0011
2022-08-09 2022-06-30 13F AON SHS CL A G0403H108 4,981 -128 -2.51 1,343 -19.29 0.2616
2022-05-16 2022-03-31 13F AON SHS CL A G0403H108 5,109 15 0.29 1,664 8.69 0.2731
2022-02-14 2021-12-31 13F AON SHS CL A G0403H108 5,094 11 0.22 1,531 5.37 0.2349
2021-11-15 2021-09-30 13F AON SHS CL A G0403H108 5,083 0 0.00 1,453 19.69 0.1881
2021-08-16 2021-06-30 13F AON SHS CL A G0403H108 5,083 183 3.73 1,214 7.62 0.1941
2021-05-13 2021-03-31 13F AON Common Stock G0408V102 4,900 0 0.00 1,128 8.99 0.2012
2021-05-13 2021-03-31 13F AON COMMON STOCK G0403H108 168 12 38 0.0068
2021-02-12 2020-12-31 13F AON Common Stock G0408V102 4,900 0 0.00 1,035 2.37 0.1966
2021-02-12 2020-12-31 13F AON COMMON STOCK G0403H108 156 5 32 0.0061
2020-11-13 2020-09-30 13F AON Common Stock G0408V102 4,900 0 0.00 1,011 7.10 0.2090
2020-11-13 2020-09-30 13F AON COMMON STOCK G0403H108 151 -6 31 0.0064
2020-08-04 2020-06-30 13F AON Common Stock G0408V102 4,900 -154 -3.05 944 13.19 0.2036
2020-08-04 2020-06-30 13F AON COMMON STOCK G0403H108 157 -4,897 31 0.0067
2020-05-15 2020-03-31 13F AON Common Stock G0408V102 5,054 8 0.16 834 -20.65 0.2104
2020-01-28 2019-12-31 13F AON Common Stock G0408V102 5,046 0 0.00 1,051 7.68 0.2290
2019-10-31 2019-09-30 13F AON Common Stock G0408V102 5,046 -679 -11.86 976 -11.67 0.2222
2019-07-30 2019-06-30 13F AON Common Stock G0408V102 5,725 -5 -0.09 1,105 12.99 0.2400
2019-04-26 2019-03-31 13F AON COMMON STOCK G0408V102 5,730 5,366 1,474.18 978 1,745.28 0.2135
2019-01-25 2018-12-31 13F AON COMMON STOCK G0408V102 364 0 0.00 53 -5.36 0.0334
2018-10-26 2018-09-30 13F AON COMMON STOCK G0408V102 364 212 139.47 56 166.67 0.0294
2018-07-27 2018-06-30 13F AON COMMON STOCK G0408V102 152 -10 -6.17 21 -8.70 0.0106
2018-04-27 2018-03-31 13F AON COMMON STOCK G0408V102 162 23 16.55 23 21.05 0.0118
2018-01-26 2017-12-31 13F AON COMMON STOCK G0408V102 139 0 0.00 19 -5.00 0.0092
2017-10-27 2017-09-30 13F AON COMMON STOCK G0408V102 139 0 0.00 20 11.11 0.0099
2017-07-28 2017-06-30 13F AON COMMON STOCK G0408V102 139 59 73.75 18 100.00 0.0090
2017-04-27 2017-03-31 13F AON COMMON STOCK G0408V102 80 0 0.00 9 0.00 0.0044
2017-01-26 2016-12-31 13F AON COMMON STOCK G0408V102 80 0 0.00 9 0.00 0.0045
2016-10-28 2016-09-30 13F AON COMMON STOCK G0408V102 80 0 0.00 9 0.00 0.0051
2016-07-29 2016-06-30 13F AON COMMON STOCK G0408V102 80 0 0.00 9 12.50 0.0053
2016-04-29 2016-03-31 13F AON COMMON STOCK G0408V102 80 -49 -37.98 8 -33.33 0.0048
2016-01-29 2015-12-31 13F AON COMMON STOCK G0408V102 129 0 0.00 12 9.09 0.0071
2015-10-29 2015-09-30 13F AON COMMON STOCK G0408V102 129 0 0.00 11 -15.38 0.0070
2015-07-27 2015-06-30 13F AON COMMON STOCK G0408V102 129 -104 -44.64 13 -43.48 0.0077
2015-04-29 2015-03-31 13F AON COMMON STOCK G0408V102 233 0 0.00 23 0.00 0.0135
2015-01-23 2014-12-31 13F AON COMMON STOCK G0408V102 233 0 0.00 23 15.00 0.0139
2014-10-24 2014-09-30 13F AON COMMON STOCK G0408V102 233 -37 -13.70 20 -16.67 0.0127
2014-07-24 2014-06-30 13F AON COMMON STOCK G0408V102 270 0 0.00 24 9.09 0.0143
2014-04-24 2014-03-31 13F AON COMMON STOCK G0408V102 270 11 4.25 22 4.76 0.0135
2014-01-30 2013-12-31 13F AON COMMON STOCK G0408V102 259 0 0.00 21 10.53 0.0122
2013-10-25 2013-09-30 13F AON COMMON STOCK G0408V102 259 16 6.58 19 18.75 0.0120
2013-07-25 2013-06-30 13F AON COMMON STOCK G0408V102 243 243 16 0.0110
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.