Aon plc
DE ˙ DB ˙ IE00BLP1HW54
272,30 € ↓ -1,70 (-0,62%)
2026-06-03
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership26,747 shares
Latest Disclosed Value $ 8,634,736
Janus Henderson Group Plc reports 9.84% increase in ownership of 4VK / Aon plc

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 26,747 shares of Aon plc (DE:4VK) valued at $7,491,835 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 24,351 shares of Aon plc. This represents a change in shares of 9.84% during the quarter. The current value of the position is $7,283,208 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-18 2026-03-31 13F/A-1 AON SHS CL A G0403H108 26,747 2,396 9.84 8,635 0.48 0.0015
2026-05-15 2026-03-31 13F AON SHS CL A G0403H108 26,747 2,396 9.84 8,635 0.48 0.0016
2026-02-17 2025-12-31 13F AON SHS CL A G0403H108 24,351 -290,240 -92.26 8,594 -92.34 0.0038
2025-11-14 2025-09-30 13F AON SHS CL A G0403H108 314,591 155,974 98.33 112,170 98.22 0.0512
2025-08-14 2025-06-30 13F AON SHS CL A G0403H108 158,617 133,559 533.00 56,589 472.94 0.0277
2025-05-15 2025-03-31 13F AON SHS CL A G0403H108 25,058 687 2.82 9,877 12.88 0.0054
2025-02-14 2024-12-31 13F AON SHS CL A G0403H108 24,371 -3,332 -12.03 8,751 -8.70 0.0044
2024-11-14 2024-09-30 13F AON SHS CL A G0403H108 27,703 284 1.04 9,585 19.12 0.0049
2024-08-14 2024-06-30 13F AON SHS CL A G0403H108 27,419 -22,528 -45.10 8,047 -51.72 0.0043
2024-05-15 2024-03-31 13F AON SHS CL A G0403H108 49,947 -359,071 -87.79 16,668 -85.99 0.0091
2024-02-14 2023-12-31 13F AON SHS CL A G0403H108 409,018 -182,747 -30.88 118,991 -37.99 0.0710
2023-11-14 2023-09-30 13F AON SHS CL A G0403H108 591,765 -74,700 -11.21 191,896 -16.58 0.1257
2023-08-14 2023-06-30 13F AON SHS CL A G0403H108 666,465 -193,422 -22.49 230,024 -15.13 0.1431
2023-05-15 2023-03-31 13F AON SHS CL A G0403H108 859,887 33,883 4.10 271,033 9.35 0.1787
2023-02-14 2022-12-31 13F AON SHS CL A G0403H108 826,004 -524,398 -38.83 247,869 -31.51 0.1771
2023-01-13 2022-09-30 13F/A-1 AON SHS CL A G0403H108 1,350,402 -112,579 -7.70 361,892 -8.29 0.2711
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 1,350,402 -112,579 361,892 0.0919
2022-08-15 2022-06-30 13F AON SHS CL A G0403H108 1,462,981 -467,050 -24.20 394,607 -37.22 0.2721
2022-05-16 2022-03-31 13F AON SHS CL A G0403H108 1,930,031 -642,861 -24.99 628,536 -18.72 0.3035
2022-02-14 2021-12-31 13F AON SHS CL A G0403H108 2,572,892 -355,307 -12.13 773,301 -7.58 0.3225
2021-11-16 2021-09-30 13F AON SHS CL A G0403H108 2,928,199 -1,106,759 -27.43 836,768 -13.14 0.3660
2021-08-16 2021-06-30 13F AON SHS CL A G0403H108 4,034,958 -791,722 -16.40 963,340 -13.26 0.4123
2021-05-17 2021-03-31 13F AON SHS CL A G0403H108 4,826,680 369,482 8.29 1,110,654 17.95 0.5071
2021-02-16 2020-12-31 13F AON SHS CL A G0403H108 4,457,198 -124,927 -2.73 941,652 -0.38 0.4375
2020-11-16 2020-09-30 13F AON SHS CL A G0403H108 4,582,125 -81,494 -1.75 945,239 5.24 0.4928
2020-08-14 2020-06-30 13F AON SHS CL A G0403H108 4,663,619 126,657 2.79 898,184 19.94 0.5042
2020-05-14 2020-03-31 13F AON SHS CL A G0408V102 4,536,962 -20,253 -0.44 748,839 -21.11 0.5154
2020-02-18 2019-12-31 13F AON SHS CL A G0408V102 4,557,215 879,207 23.90 949,202 33.32 0.4860
2019-11-14 2019-09-30 13F AON SHS CL A G0408V102 3,678,008 -44,506 -1.20 711,956 -0.89 0.3857
2019-07-31 2019-06-30 13F AON SHS CL A G0408V102 3,722,514 -55,286 -1.46 718,342 11.39 0.3912
2019-04-30 2019-03-31 13F AON SHS CL A G0408V102 3,777,800 79,619 2.15 644,865 19.96 0.3574
2019-02-06 2018-12-31 13F AON SHS CL A G0408V102 3,698,181 -86,831 -2.29 537,571 -7.64 0.3428
2018-11-09 2018-09-30 13F AON SHS CL A G0408V102 3,785,012 -345,829 -8.37 582,058 2.72 0.3110
2018-08-10 2018-06-30 13F AON SHS CL A G0408V102 4,130,841 -381,236 -8.45 566,626 -10.52 0.3230
2018-05-14 2018-03-31 13F AON SHS CL A G0408V102 4,512,077 -51,832 -1.14 633,277 3.55 0.3732
2018-03-12 2017-12-31 13F/A-1 AON SHS CL A G0408V102 4,563,909 1,071,908 30.70 611,567 19.87 0.3766
2018-02-09 2017-12-31 13F AON SHS CL A G0408V102 4,563,909 1,071,908 611,567
2017-11-14 2017-09-30 13F AON SHS CL A G0408V102 3,492,001 311,733 9.80 510,175 20.66 0.3270
2017-08-17 2017-06-30 13F/A-1 AON SHS CL A G0408V102 3,180,268 2,917,018 1,108.08 422,814 1,253.26 0.2882
2017-08-14 2017-06-30 13F AON SHS CL A G0408V102 3,180,268 2,917,018 422,814
2017-05-03 2017-03-31 13F AON SHS CL A G0408V102 263,250 -31,379 -10.65 31,244 -4.93 0.2194
2017-01-30 2016-12-31 13F AON SHS CL A G0408V102 294,629 6,795 2.36 32,864 1.51 0.2424
2016-10-24 2016-09-30 13F AON SHS CL A G0408V102 287,834 -12,903 -4.29 32,376 -1.44 0.2386
2016-07-29 2016-06-30 13F AON SHS CL A G0408V102 300,737 -8,522 -2.76 32,848 1.70 0.2731
2016-05-12 2016-03-31 13F AON SHS CL A G0408V102 309,259 309,259 0.00 32,299 0.2620
2015-08-17 2015-06-30 13F AON SHS CL A G0408V102 0 -338,917 -100.00 0 -100.00
2015-06-02 2015-03-31 13F/A-1 AON SHS CL A G0408V102 338,917 2,889 0.86 32,567 2.22 0.2512
2015-05-15 2015-03-31 13F AON SHS CL A G0408V102 338,917 32,567
2015-02-12 2014-12-31 13F AON SHS CL A G0408V102 336,028 15,448 4.82 31,860 13.33 0.2297
2014-11-12 2014-09-30 13F AON SHS CL A G0408V102 320,580 320,580 28,113 0.2644
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.