Aon plc
DE ˙ DB ˙ IE00BLP1HW54
276,10 € ↑5,50 (2,03%)
2026-06-05
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionGluskin Sheff & Assoc Inc
Latest Disclosed Ownership92,519 shares
Latest Disclosed Value $ 29,876,925
Gluskin Sheff & Assoc Inc reports 22.68% decrease in ownership of 4VK / Aon plc

On May 15, 2026 - Gluskin Sheff & Assoc Inc filed a 13F-HR form disclosing ownership of 92,519 shares of Aon plc (DE:4VK) valued at $25,914,572 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 119,655 shares of Aon plc. This represents a change in shares of -22.68% during the quarter. The current value of the position is $25,544,496 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 92,519 -27,136 -22.68 29,877 -29.24 4.9701
2026-02-13 2025-12-31 13F AON SHS CL A G0403H108 119,655 -50,119 -29.52 42,224 -30.25 5.8604
2025-11-14 2025-09-30 13F AON SHS CL A G0403H108 169,774 12,388 7.87 60,540 7.82 7.6481
2025-08-14 2025-06-30 13F AON SHS CL A G0403H108 157,386 23,443 17.50 56,149 5.04 6.8470
2025-05-15 2025-03-31 13F AON SHS CL A G0403H108 133,943 -19,882 -12.93 53,455 -3.24 6.8868
2025-02-14 2024-12-31 13F AON SHS CL A G0403H108 153,825 12,808 9.08 55,248 12.86 6.6229
2024-11-14 2024-09-30 13F AON SHS CL A G0403H108 141,017 43,776 45.02 48,950 71.47 5.7277
2024-08-14 2024-06-30 13F AON SHS CL A G0403H108 97,241 -25,407 -20.72 28,548 -30.25 3.2528
2024-05-15 2024-03-31 13F AON SHS CL A G0403H108 122,648 7,489 6.50 40,930 22.13 4.0899
2024-02-14 2023-12-31 13F AON SHS CL A G0403H108 115,159 -14,065 -10.88 33,514 -20.01 3.3053
2023-11-14 2023-09-30 13F AON SHS CL A G0403H108 129,224 -11,244 -8.00 41,897 -13.59 3.2099
2023-08-14 2023-06-30 13F AON SHS CL A G0403H108 140,468 -12,241 -8.02 48,490 0.71 2.9353
2023-05-15 2023-03-31 13F AON SHS CL A G0403H108 152,709 37,046 32.03 48,148 38.69 2.6230
2023-02-14 2022-12-31 13F AON SHS CL A G0403H108 115,663 -10,702 -8.47 34,715 2.56 1.9483
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 126,365 -6,308 -4.75 33,849 -5.39 2.0193
2022-08-15 2022-06-30 13F AON SHS CL A G0403H108 132,673 -31,781 -19.33 35,779 -33.19 1.9532
2022-05-16 2022-03-31 13F AON SHS CL A G0403H108 164,454 2,519 1.56 53,551 10.03 2.3310
2022-02-14 2021-12-31 13F AON SHS CL A G0403H108 161,935 -8,034 -4.73 48,671 0.20 1.9955
2021-11-12 2021-09-30 13F AON SHS CL A G0403H108 169,969 -9,927 -5.52 48,572 13.08 2.0315
2021-08-13 2021-06-30 13F AON SHS CL A G0403H108 179,896 27,013 17.67 42,952 22.09 1.9820
2021-05-14 2021-03-31 13F AON SHS CL A G0403H108 152,883 -45,821 -23.06 35,180 -16.20 1.5790
2021-02-16 2020-12-31 13F AON SHS CL A G0403H108 198,704 4,106 2.11 41,980 4.57 2.8788
2020-11-12 2020-09-30 13F AON SHS CL A G0403H108 194,598 19,633 11.22 40,146 19.12 2.6321
2020-08-11 2020-06-30 13F AON SHS CL A G0403H108 174,965 9,742 5.90 33,701 23.60 2.2453
2020-05-13 2020-03-31 13F AON SHS CL A G0408V102 165,223 36,312 28.17 27,267 3.66 1.8055
2020-02-12 2019-12-31 13F AON SHS CL A G0408V102 128,911 -419 -0.32 26,304 5.07 1.4925
2019-11-08 2019-09-30 13F AON SHS CL A G0408V102 129,330 -167,853 -56.48 25,034 -56.35 1.5653
2019-08-14 2019-06-30 13F AON SHS CL A G0408V102 297,183 -47,064 -13.67 57,350 -2.40 3.4332
2019-05-10 2019-03-31 13F AON SHS CL A G0408V102 344,247 110,626 47.35 58,763 73.04 3.4850
2019-02-12 2018-12-31 13F AON SHS CL A G0408V102 233,621 -2,839 -1.20 33,959 -6.61 2.1958
2018-11-09 2018-09-30 13F AON SHS CL A G0408V102 236,460 -12,717 -5.10 36,363 6.39 1.6082
2018-08-13 2018-06-30 13F AON SHS CL A G0408V102 249,177 249,177 34,180 1.7276
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.