Aon plc
US ˙ NYSE ˙ IE00BLP1HW54

SecurityAON / Aon plc
InstitutionConning Inc.
Latest Disclosed Ownership987 shares
Latest Disclosed Value $ 318,583
Conning Inc. reports 16.43% decrease in ownership of AON / Aon plc

On April 30, 2026 - Conning Inc. filed a 13F-HR form disclosing ownership of 987 shares of Aon plc (US:AON) valued at $318,584 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 1,181 shares of Aon plc. This represents a change in shares of -16.43% during the quarter. The current value of the position is $311,497 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)
2026-04-30 2026-03-31 13F AON SHS CL A G0403H108 987 -194 -16.43 319 -23.56 0.0106
2026-02-05 2025-12-31 13F AON SHS CL A G0403H108 1,181 -415 -26.00 417 -26.89 0.0140
2025-10-28 2025-09-30 13F AON SHS CL A G0403H108 1,596 0 0.00 569 0.00 0.0189
2025-07-24 2025-06-30 13F AON SHS CL A G0403H108 1,596 -52 -3.16 569 -13.39 0.0196
2025-04-29 2025-03-31 13F AON SHS CL A G0403H108 1,648 32 1.98 658 13.28 0.0230
2025-01-28 2024-12-31 13F AON SHS CL A G0403H108 1,616 -20 -1.22 580 2.47 0.0203
2024-10-29 2024-09-30 13F AON SHS CL A G0403H108 1,636 0 0.00 566 17.92 0.0187
2024-07-26 2024-06-30 13F AON SHS CL A G0403H108 1,636 11 0.68 480 -11.44 0.0173
2024-04-26 2024-03-31 13F AON SHS CL A G0403H108 1,625 -50 -2.99 542 11.29 0.0178
2024-01-30 2023-12-31 13F AON SHS CL A G0403H108 1,675 0 0.00 487 -10.31 0.0170
2023-10-26 2023-09-30 13F AON SHS CL A G0403H108 1,675 45 2.76 543 -3.38 0.0198
2023-07-21 2023-06-30 13F AON SHS CL A G0403H108 1,630 -175 -9.70 563 -1.23 0.0188
2023-04-27 2023-03-31 13F AON SHS CL A G0403H108 1,805 -90 -4.75 569 0.18 0.0190
2023-02-08 2022-12-31 13F AON SHS CL A G0403H108 1,895 -6 -0.32 569 11.59 0.0185
2022-10-31 2022-09-30 13F AON SHS CL A G0403H108 1,901 -166 -8.03 509 -8.62 0.0181
2022-07-20 2022-06-30 13F AON SHS CL A G0403H108 2,067 -13 -0.62 557 -17.73 0.0167
2022-05-02 2022-03-31 13F AON SHS CL A G0403H108 2,080 -250 -10.73 677 -3.29 0.0184
2022-01-27 2021-12-31 13F AON SHS CL A G0403H108 2,330 -356 -13.25 700 -8.85 0.0187
2021-11-05 2021-09-30 13F AON SHS CL A G0403H108 2,686 -190 -6.61 768 11.79 0.0220
2021-07-29 2021-06-30 13F AON SHS CL A G0403H108 2,876 -264 -8.41 687 -4.98 0.0199
2021-04-23 2021-03-31 13F AON SHS CL A G0403H108 3,140 -290 -8.45 723 -0.28 0.0217
2021-01-28 2020-12-31 13F AON SHS CL A G0403H108 3,430 -100 -2.83 725 -0.41 0.0230
2020-10-21 2020-09-30 13F AON SHS CL A G0403H108 3,530 20 0.57 728 7.69 0.0256
2020-08-07 2020-06-30 13F AON SHS CL A G0403H108 3,510 -214 -5.75 676 9.92 0.0251
2020-04-29 2020-03-31 13F AON SHS CL A G0408V102 3,724 -94 -2.46 615 -22.64 0.0262
2020-01-29 2019-12-31 13F AON SHS CL A G0408V102 3,818 -340 -8.18 795 -1.24 0.0261
2019-10-30 2019-09-30 13F AON SHS CL A G0408V102 4,158 -70 -1.66 805 -1.35 0.0279
2019-07-25 2019-06-30 13F AON SHS CL A G0408V102 4,228 -636 -13.08 816 -1.69 0.0270
2019-04-22 2019-03-31 13F AON SHS CL A G0408V102 4,864 -160 -3.18 830 13.70 0.0259
2019-01-29 2018-12-31 13F AON SHS CL A G0408V102 5,024 -450 -8.22 730 -13.30 0.0248
2018-10-26 2018-09-30 13F AON SHS CL A G0408V102 5,474 -349 -5.99 842 5.38 0.0250
2018-07-25 2018-06-30 13F AON SHS CL A G0408V102 5,823 -360 -5.82 799 -7.95 0.0244
2018-05-03 2018-03-31 13F AON SHS CL A G0408V102 6,183 20 0.32 868 5.08 0.0279
2018-01-30 2017-12-31 13F AON SHS CL A G0408V102 6,163 -400 -6.09 826 -13.87 0.0273
2017-10-20 2017-09-30 13F AON SHS CL A G0408V102 6,563 -30 -0.46 959 9.35 0.0326
2017-08-03 2017-06-30 13F AON SHS CL A G0408V102 6,593 -30 -0.45 877 11.58 0.0318
2017-04-27 2017-03-31 13F AON SHS CL A G0408V102 6,623 -230 -3.36 786 2.88 0.0290
2017-02-02 2016-12-31 13F AON SHS CL A G0408V102 6,853 80 1.18 764 0.26 0.0305
2016-10-25 2016-09-30 13F AON SHS CL A G0408V102 6,773 -70 -1.02 762 2.01 0.0304
2016-07-26 2016-06-30 13F AON SHS CL A G0408V102 6,843 -100 -1.44 747 3.03 0.0308
2016-04-26 2016-03-31 13F AON SHS CL A G0408V102 6,943 90 1.31 725 14.72 0.0304
2016-02-04 2015-12-31 13F AON SHS CL A G0408V102 6,853 -400 -5.51 632 -1.71 0.0270
2015-10-23 2015-09-30 13F AON SHS CL A G0408V102 7,253 -750 -9.37 643 -19.42 0.0282
2015-08-03 2015-06-30 13F AON SHS CL A G0408V102 8,003 -150 -1.84 798 1.79 0.0327
2015-04-24 2015-03-31 13F AON SHS CL A G0408V102 8,153 -180 -2.16 784 -0.76 0.0333
2015-02-13 2014-12-31 13F AON SHS CL A G0408V102 8,333 -300 -3.48 790 4.36 0.0386
2014-11-07 2014-09-30 13F AON SHS CL A G0408V102 8,633 -500 -5.47 757 -8.02 0.0397
2014-07-25 2014-06-30 13F AON SHS CL A G0408V102 9,133 -3,430 -27.30 823 -22.29 0.0437
2014-04-25 2014-03-31 13F AON SHS CL A G0408V102 12,563 370 3.03 1,059 3.52 0.0622
2014-02-04 2013-12-31 13F AON SHS CL A G0408V102 12,193 1,550 14.56 1,023 29.17 0.0634
2013-11-04 2013-09-30 13F AON SHS CL A G0408V102 10,643 180 1.72 792 17.68 0.0612
2013-08-13 2013-06-30 13F AON SHS CL A G0408V102 10,463 10,463 673 0.0556
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.