Aon plc
DE ˙ DB ˙ IE00BLP1HW54
276,10 € ↑5,50 (2,03%)
2026-06-05
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionTrexquant Investment LP
Latest Disclosed Ownership13,488 shares
Latest Disclosed Value $ 4,353,657
Trexquant Investment LP reports 31.93% decrease in ownership of 4VK / Aon plc

On May 15, 2026 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 13,488 shares of Aon plc (DE:4VK) valued at $3,777,989 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 19,816 shares of Aon plc. This represents a change in shares of -31.93% during the quarter. The current value of the position is $3,724,037 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)
2026-05-15 2026-03-31 13F AON SHS CL A G0403H108 13,488 -6,328 -31.93 4,354 -37.74 0.0313
2026-02-17 2025-12-31 13F AON SHS CL A G0403H108 19,816 -9,305 -31.95 6,993 -32.66 0.0623
2025-11-14 2025-09-30 13F AON SHS CL A G0403H108 29,121 9,672 49.73 10,384 49.65 0.1069
2025-08-12 2025-06-30 13F AON SHS CL A G0403H108 19,449 19,449 6,939 0.0783
2023-08-11 2023-06-30 13F AON SHS CL A G0403H108 0 -4,583 -100.00 0 -100.00
2023-05-15 2023-03-31 13F AON SHS CL A G0403H108 4,583 490 11.97 1,445 17.59 0.0397
2023-02-13 2022-12-31 13F AON SHS CL A G0403H108 4,093 4,093 1,228 0.0348
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 0 -17,433 -100.00 0 -100.00
2022-08-11 2022-06-30 13F AON SHS CL A G0403H108 17,433 9,420 117.56 4,701 80.18 0.2106
2022-05-13 2022-03-31 13F AON SHS CL A G0403H108 8,013 8,013 2,609 0.1225
2021-11-12 2021-09-30 13F AON SHS CL A G0403H108 0 -11,431 -100.00 0 -100.00
2021-08-12 2021-06-30 13F AON SHS CL A G0403H108 11,431 -6,137 -34.93 2,729 -32.50 0.2303
2021-05-13 2021-03-31 13F AON SHS CL A G0403H108 17,568 17,568 4,043 0.3709
2020-05-08 2020-03-31 13F AON SHS CL A G0408V102 0 -24,991 -100.00 0 -100.00
2020-02-12 2019-12-31 13F AON SHS CL A G0408V102 24,991 24,991 5,205 0.3079
2019-08-09 2019-06-30 13F AON SHS CL A G0408V102 0 -3,426 -100.00 0 -100.00
2019-05-13 2019-03-31 13F AON SHS CL A G0408V102 3,426 -22,952 -87.01 585 -84.74 0.0415
2019-02-13 2018-12-31 13F AON SHS CL A G0408V102 26,378 25,038 1,868.51 3,834 1,761.17 0.2396
2018-11-09 2018-09-30 13F AON SHS CL A G0408V102 1,340 -9,453 -87.58 206 -86.08 0.0155
2018-08-07 2018-06-30 13F AON SHS CL A G0408V102 10,793 -10,942 -50.34 1,480 -51.48 0.1026
2018-05-03 2018-03-31 13F AON SHS CL A G0408V102 21,735 21,735 3,050 0.2126
2017-11-09 2017-09-30 13F AON SHS CL A G0408V102 0 -1,900 -100.00 0 -100.00
2017-08-01 2017-06-30 13F AON SHS CL A G0408V102 1,900 1,900 253 0.0693
2017-05-08 2017-03-31 13F AON SHS CL A G0408V102 0 -11,800 -100.00 0 -100.00
2017-02-10 2016-12-31 13F AON SHS CL A G0408V102 11,800 11,800 1,316 0.2082
2015-08-12 2015-06-30 13F AON SHS CL A G0408V102 0 -8,200 -100.00 0 -100.00
2015-05-13 2015-03-31 13F AON SHS CL A G0408V102 8,200 8,200 788 0.0804
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.