Aon plc
DE ˙ DB ˙ IE00BLP1HW54
276,10 € ↑5,50 (2,03%)
2026-06-05
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionM&t Bank Corp
Latest Disclosed Ownership24,014 shares
Latest Disclosed Value $ 7,751,238
M&t Bank Corp reports 9.39% decrease in ownership of 4VK / Aon plc

On May 12, 2026 - M&t Bank Corp filed a 13F-HR form disclosing ownership of 24,014 shares of Aon plc (DE:4VK) valued at $6,726,321 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 30, 2026 disclosing 26,503 shares of Aon plc. This represents a change in shares of -9.39% during the quarter. The current value of the position is $6,630,265 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)
2026-05-12 2026-03-31 13F AON SHS CL A G0403H108 24,014 -2,489 -9.39 7,751 -17.12 0.0063
2026-01-30 2025-12-31 13F/A-1 AON SHS CL A G0403H108 26,503 725 2.81 9,353 1.75 0.0300
2026-01-28 2025-12-31 13F AON SHS CL A G0403H108 21,938 -3,840 3,868 0.0023
2025-11-14 2025-09-30 13F AON SHS CL A G0403H108 25,778 -3,696 -12.54 9,192 -12.58 0.0309
2025-08-13 2025-06-30 13F AON SHS CL A G0403H108 29,474 -1,380 -4.47 10,515 -14.61 0.0361
2025-04-30 2025-03-31 13F AON SHS CL A G0403H108 30,854 1,609 5.50 12,314 17.23 0.0449
2025-02-06 2024-12-31 13F AON SHS CL A G0403H108 29,245 -5,345 -15.45 10,504 -12.23 0.0352
2024-11-19 2024-09-30 13F/A-1 AON SHS CL A G0403H108 34,590 -1,763 -4.85 11,968 12.13 0.0394
2024-11-15 2024-09-30 13F AON SHS CL A G0403H108 34,590 -1,763 11,968 0.0072
2024-07-31 2024-06-30 13F AON SHS CL A G0403H108 36,353 -4,640 -11.32 10,673 -21.98 0.0364
2024-05-07 2024-03-31 13F AON SHS CL A G0403H108 40,993 -1,628 -3.82 13,680 10.29 0.0476
2024-02-06 2023-12-31 13F AON SHS CL A G0403H108 42,621 -2,793 -6.15 12,404 -15.76 0.0456
2023-11-02 2023-09-30 13F AON SHS CL A G0403H108 45,414 -9,215 -16.87 14,724 -21.92 0.0587
2023-08-09 2023-06-30 13F AON SHS CL A G0403H108 54,629 -3,795 -6.50 18,858 2.37 0.0704
2023-05-11 2023-03-31 13F AON SHS CL A G0403H108 58,424 -11,520 -16.47 18,420 -12.25 0.0713
2023-02-13 2022-12-31 13F/A-1 AON SHS CL A G0403H108 69,944 -13,422 -16.10 20,993 -6.00 0.0844
2023-02-13 2022-12-31 13F AMDOCS SHS G0403H108 56,297 -27,069 16,887 0.0679
2022-11-17 2022-09-30 13F/A-1 AON SHS CL A G0403H108 83,366 -2,702 -3.14 22,333 53.07 0.0992
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 83,366 -2,702 20,997 0.0179
2022-08-05 2022-06-30 13F AON SHS CL A G0403H108 86,068 45,709 113.26 14,590 11.02 0.0687
2022-05-09 2022-03-31 13F AON SHS CL A G0403H108 40,359 5,375 15.36 13,142 25.00 0.0580
2022-02-07 2021-12-31 13F AON SHS CL A G0403H108 34,984 -2,131 -5.74 10,514 -0.87 0.0442
2021-10-28 2021-09-30 13F AON SHS CL A G0403H108 37,115 -6,227 -14.37 10,606 2.50 0.0478
2021-08-13 2021-06-30 13F AON SHS CL A G0403H108 43,342 -10,281 -19.17 10,347 -16.14 0.0454
2021-05-06 2021-03-31 13F AON SHS CL A G0403H108 53,623 -1,118 -2.04 12,339 6.69 0.0532
2021-02-12 2020-12-31 13F AON SHS CL A G0403H108 54,741 1,039 1.93 11,565 4.40 0.0507
2020-11-06 2020-09-30 13F AON SHS CL A G0403H108 53,702 19,368 56.41 11,078 67.54 0.0544
2020-07-29 2020-06-30 13F AON SHS CL A G0403H108 34,334 -4,324 -11.19 6,612 3.64 0.0354
2020-05-14 2020-03-31 13F AON SHS CL A G0408V102 38,658 16,503 74.49 6,380 38.24 0.0377
2020-02-07 2019-12-31 13F AON SHS CL A G0408V102 22,155 -683 -2.99 4,615 4.39 0.0217
2019-11-12 2019-09-30 13F AON SHS CL A G0408V102 22,838 -1,684 -6.87 4,421 -6.59 0.0221
2019-08-12 2019-06-30 13F AON SHS CL A G0408V102 24,522 2,468 11.19 4,733 25.71 0.0247
2019-05-15 2019-03-31 13F AON SHS CL A G0408V102 22,054 499 2.32 3,765 20.17 0.0197
2019-02-01 2018-12-31 13F AON SHS CL A G0408V102 21,555 -2,531 -10.51 3,133 -15.42 0.0180
2018-11-09 2018-09-30 13F AON SHS CL A G0408V102 24,086 -699 -2.82 3,704 8.97 0.0185
2018-08-10 2018-06-30 13F AON SHS CL A G0408V102 24,785 -914 -3.56 3,399 -5.74 0.0183
2018-05-04 2018-03-31 13F AON SHS CL A G0408V102 25,699 -1,531 -5.62 3,606 -1.15 0.0194
2018-02-06 2017-12-31 13F AON SHS CL A G0408V102 27,230 -1,173 -4.13 3,648 -12.10 0.0191
2017-11-13 2017-09-30 13F AON SHS CL A G0408V102 28,403 -1,078 -3.66 4,150 5.87 0.0225
2017-08-11 2017-06-30 13F AON SHS CL A G0408V102 29,481 -1,389 -4.50 3,920 6.99 0.0231
2017-05-10 2017-03-31 13F AON SHS CL A G0408V102 30,870 1,403 4.76 3,664 11.54 0.0221
2017-02-14 2016-12-31 13F AON SHS CL A G0408V102 29,467 -589 -1.96 3,285 -2.87 0.0205
2016-11-04 2016-09-30 13F AON SHS CL A G0408V102 30,056 465 1.57 3,382 4.67 0.0215
2016-08-04 2016-06-30 13F AON SHS CL A G0408V102 29,591 -756 -2.49 3,231 1.96 0.0217
2016-05-11 2016-03-31 13F AON SHS CL A G0408V102 30,347 101 0.33 3,169 13.67 0.0215
2016-02-12 2015-12-31 13F AON SHS CL A G0408V102 30,246 -6,622 -17.96 2,788 -14.66 0.0185
2015-11-13 2015-09-30 13F AON SHS CL A G0408V102 36,868 2,765 8.11 3,267 -3.88 0.0223
2015-08-14 2015-06-30 13F AON SHS CL A G0408V102 34,103 396 1.17 3,399 4.94 0.0205
2015-05-14 2015-03-31 13F AON SHS CL A G0408V102 33,707 -423 -1.24 3,239 0.03 0.0202
2015-02-12 2014-12-31 13F AON SHS CL A G0408V102 34,130 -1,042 -2.96 3,238 4.99 0.0203
2014-11-14 2014-09-30 13F AON SHS CL A G0408V102 35,172 34,172 3,417.20 3,084 3,326.67 0.0216
2014-08-13 2014-06-30 13F AON COMMON G0408V102 1,000 -250 -20.00 90 -14.29 0.0038
2014-05-14 2014-03-31 13F AON COMMON STOCK G0408V102 1,250 0 0.00 105 0.00 0.0044
2014-02-12 2013-12-31 13F AON COMMON STOCK G0408V102 1,250 0 0.00 105 12.90 0.0044
2013-11-13 2013-09-30 13F AON COMMON STOCK G0408V102 1,250 -250 -16.67 93 -4.12 0.0044
2013-07-30 2013-06-30 13F AON COMMON STOCK G0408V102 1,500 1,500 97 0.0047
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.