Aon plc
US ˙ NYSE ˙ IE00BLP1HW54

SecurityAON / Aon plc
InstitutionKBC Group NV
Latest Disclosed Ownership36,063 shares
Latest Disclosed Value $ 11,641
KBC Group NV reports 1.95% decrease in ownership of AON / Aon plc

On May 7, 2026 - KBC Group NV filed a 13F-HR form disclosing ownership of 36,063 shares of Aon plc (US:AON) valued at $11,640,415 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 36,782 shares of Aon plc. This represents a change in shares of -1.95% during the quarter. The current value of the position is $11,381,483 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)
2026-05-07 2026-03-31 13F AON SHS CL A G0403H108 36,063 -719 -1.95 12 -8.33 0.0150
2026-01-26 2025-12-31 13F AON SHS CL A G0403H108 36,782 549 1.52 13 0.00 0.0296
2026-01-20 2025-09-30 13F AON SHS CL A G0403H108 36,233 4,035 12.53 13 9.09 0.0310
2025-08-08 2025-06-30 13F AON SHS CL A G0403H108 32,198 -828 -2.51 11 -15.38 0.0310
2025-04-25 2025-03-31 13F AON SHS CL A G0403H108 33,026 1,553 4.93 13 18.18 0.0409
2025-01-22 2024-12-31 13F AON SHS CL A G0403H108 31,473 -48,358 -60.58 11 -59.26 0.0311
2024-11-06 2024-09-30 13F AON SHS CL A G0403H108 79,831 52,213 189.05 28 237.50 0.0835
2024-07-17 2024-06-30 13F AON SHS CL A G0403H108 27,618 -4,714 -14.58 8 -20.00 0.0245
2024-05-08 2024-03-31 13F AON SHS CL A G0403H108 32,332 -9,961 -23.55 11 -16.67 0.0343
2024-02-13 2023-12-31 13F AON SHS CL A G0403H108 42,293 -28,623 -40.36 12 -45.45 0.0436
2024-02-15 2023-09-30 13F/A-1 AON SHS CL A G0403H108 70,916 -61,251 -46.34 23 -51.11 0.0938
2023-11-22 2023-09-30 13F AON SHS CL A G0403H108 132,167 0 46 0.1900
2024-02-15 2023-06-30 13F/A-1 AON SHS CL A G0403H108 132,167 11,539 9.57 46 18.42 0.1876
2023-07-28 2023-06-30 13F AON SHS CL A G0403H108 132,167 11,539 46 0.1900
2024-02-14 2023-03-31 13F/A-1 AON SHS CL A G0403H108 120,628 30,839 34.35 38 46.15 0.1614
2023-05-04 2023-03-31 13F AON SHS CL A G0403H108 120,628 75,806 38 0.1792
2024-02-14 2022-12-31 13F/A-1 AON SHS CL A G0403H108 89,789 44,719 99.22 27 116.67 0.1307
2023-02-13 2022-12-31 13F AON SHS CL A G0403H108 44,822 -248 12 0.0001
2024-02-15 2022-09-30 13F/A-1 AON SHS CL A G0403H108 45,070 10,286 29.57 12 33.33 0.0627
2022-11-08 2022-09-30 13F AON SHS CL A G0403H108 44,822 10,038 12,006 0.0628
2024-02-14 2022-06-30 13F/A-1 AON SHS CL A G0403H108 34,784 1,226 3.65 9 -10.00 0.0468
2022-07-26 2022-06-30 13F AON SHS CL A G0403H108 33,955 397 9,157 0.0461
2024-02-14 2022-03-31 13F/A-1 AON SHS CL A G0403H108 33,558 -32,157 -48.93 11 -47.37 0.0432
2022-05-06 2022-03-31 13F AON SHS CL A G0403H108 33,558 -32,157 10,927 0.0403
2024-02-14 2021-12-31 13F/A-1 AON SHS CL A G0403H108 65,715 507 0.78 20 -99.90 0.0651
2022-02-03 2021-12-31 13F AON SHS CL A G0403H108 65,715 507 19,751 0.0619
2021-11-10 2021-09-30 13F AON SHS CL A G0403H108 65,208 -2,035 -3.03 18,634 16.06 0.0683
2022-02-15 2021-06-30 13F/A-1 AON SHS CL A G0403H108 67,243 525 0.79 16,055 4.58 0.0579
2021-08-11 2021-06-30 13F AON SHS CL A G0403H108 67,243 525 16,055 0.0579
2022-02-14 2021-03-31 13F/A-1 AON SHS CL A G0403H108 66,718 909 1.38 15,352 -88.96 0.0622
2021-04-26 2021-03-31 13F AON PLC- SHS CL A G0403H108 66,718 909 15,352 0.0622
2022-02-14 2020-12-31 13F/A-1 AON SHS CL A G0403H108 65,809 12,719 23.96 139,035 1,169.49 0.0654
2021-02-10 2020-12-31 13F AON SHS CL A G0403H108 65,809 12,719 13,903 0.0640
2022-02-14 2020-09-30 13F/A-1 AON SHS CL A G0403H108 53,090 6,878 14.88 10,952 23.04 0.0645
2020-10-28 2020-09-30 13F AON SHS CL A G0403H108 53,090 6,878 10,952 0.0648
2022-02-14 2020-06-30 13F/A-1 AON SHS CL A G0403H108 46,212 19,634 73.87 8,901 102.94 0.0588
2020-08-10 2020-06-30 13F AON SHS CL A G0403H108 46,212 19,634 8,901 0.0596
2020-05-04 2020-03-31 13F AON SHS CL A G0408V102 26,578 -51,036 -65.76 4,386 -72.87 0.0367
2020-02-11 2019-12-31 13F AON SHS CL A G0408V102 77,614 -21,781 -21.91 16,166 -15.98 0.1022
2019-11-07 2019-09-30 13F AON SHS CL A G0408V102 99,395 -8,293 -7.70 19,240 -7.42 0.1411
2019-08-08 2019-06-30 13F/A-1 AON SHS CL A G0408V102 107,688 -17,276 -13.82 20,782 -2.57 0.1609
2019-07-30 2019-06-30 13F AON SHS CL A G0408V102 107,688 -66,411 20,782
2019-08-07 2019-03-31 13F/A-1 AON SHS CL A G0408V102 124,964 104,910 523.14 21,331 631.77 0.1757
2019-05-10 2019-03-31 13F AON SHS CL A G0408V102 124,964 104,910 21,331
2019-01-31 2018-12-31 13F AON SHS CL A G0408V102 20,054 -6,711 -25.07 2,915 -29.18 0.0325
2018-11-14 2018-09-30 13F AON SHS CL A G0408V102 26,765 5,322 24.82 4,116 39.95 0.0311
2018-08-03 2018-06-30 13F AON SHS CL A G0408V102 21,443 0 0.00 2,941 -2.26 0.0256
2018-08-03 2018-03-31 13F/A-1 AON SHS CL A G0408V102 21,443 -2,147 -9.10 3,009 -4.81 0.0278
2018-05-09 2018-03-31 13F AON SHS CL A G0408V102 21,443 -2,147 3,009
2018-08-03 2017-12-31 13F/A-1 AON SHS CL A G0408V102 23,590 -7,899 -25.08 3,161 -31.30 0.0270
2018-02-07 2017-12-31 13F AON SHS CL A G0408V102 23,590 -7,899 3,161
2017-11-13 2017-09-30 13F AON SHS CL A G0408V102 31,489 2,490 8.59 4,601 19.35 0.0418
2017-08-04 2017-06-30 13F AON SHS CL A G0408V102 28,999 2,395 9.00 3,855 22.11 0.0373
2017-05-10 2017-03-31 13F AON SHS CL A G0408V102 26,604 -76,462 -74.19 3,157 -72.54 0.0285
2017-02-16 2016-12-31 13F AON SHS CL A G0408V102 103,066 35,316 52.13 11,495 50.81 0.1139
2016-11-03 2016-09-30 13F AON SHS CL A G0408V102 67,750 209 0.31 7,622 3.32 0.0900
2016-08-03 2016-06-30 13F AON SHS CL A G0408V102 67,541 10,709 18.84 7,377 24.28 0.1055
2016-05-11 2016-03-31 13F AON SHS CL A G0408V102 56,832 7,651 15.56 5,936 30.89 0.0986
2016-02-11 2015-12-31 13F AON SHS CL A G0408V102 49,181 -4,194 -7.86 4,535 -4.12 0.0835
2015-11-12 2015-09-30 13F AON SHS CL A G0408V102 53,375 -37,309 -41.14 4,730 -47.67 0.0951
2015-12-16 2015-06-30 13F/A-1 AON SHS CL A G0408V102 90,684 -4,112 -4.34 9,039 -0.79 0.1162
2015-07-31 2015-06-30 13F AON SHS CL A G0408V102 90,684 9,039
2015-12-16 2015-03-31 13F/A-1 AON SHS CL A G0408V102 94,796 22,334 30.82 9,111 32.58 0.1157
2015-04-30 2015-03-31 13F AON SHS CL A G0408V102 94,796 9,111
2015-12-15 2014-12-31 13F/A-1 AON PLC SHS CL A G0408V102 72,462 32,996 83.61 6,872 98.61 0.0818
2015-02-12 2014-12-31 13F AON PLC SHS CL A G0408V102 72,462 6,872
2014-10-16 2014-09-30 13F AON SHS CL A G0408V102 39,466 14,352 57.15 3,460 52.89 0.1208
2014-08-01 2014-06-30 13F AON SHS CL A G0408V102 25,114 5,531 28.24 2,263 37.07 0.0259
2014-04-30 2014-03-31 13F AON SHS CL A G0408V102 19,583 -2,648 -11.91 1,651 -11.47 0.0261
2014-01-21 2013-12-31 13F AON CL A G0408V102 22,231 -2,045 -8.42 1,865 3.21 0.0282
2013-11-06 2013-09-30 13F AON CL A G0408V102 24,276 0 0.00 1,807 15.69 0.0291
2013-07-29 2013-06-30 13F AON CL A G0408V102 24,276 24,276 1,562 0.0290
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.