Aon plc
DE ˙ DB ˙ IE00BLP1HW54
276,10 € ↑5,50 (2,03%)
2026-06-05
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionFirst Pacific Advisors, LP
ManagerRobert Rodriguez And Steven Romick
Latest Disclosed Ownership703,258 shares
Latest Disclosed Value $ 226,997,617
First Pacific Advisors, LP reports 7.12% increase in ownership of 4VK / Aon plc

On May 14, 2026 - First Pacific Advisors, LP filed a 13F-HR form disclosing ownership of 703,258 shares of Aon plc (DE:4VK) valued at $196,982,566 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 656,531 shares of Aon plc. This represents a change in shares of 7.12% during the quarter. The current value of the position is $194,169,534 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)
2026-05-14 2026-03-31 13F AON SHS CL A G0403H108 703,258 46,727 7.12 226,998 -2.02 3.1794
2026-02-17 2025-12-31 13F AON SHS CL A G0403H108 656,531 2,086 0.32 231,677 -0.72 3.0499
2025-11-13 2025-09-30 13F AON SHS CL A G0403H108 654,445 2,426 0.37 233,362 0.32 3.2256
2025-08-01 2025-06-30 13F AON SHS CL A G0403H108 652,019 -27,993 -4.12 232,614 -14.29 3.3288
2025-05-06 2025-03-31 13F AON SHS CL A G0403H108 680,012 -48,481 -6.65 271,386 3.72 4.3506
2025-02-07 2024-12-31 13F AON SHS CL A G0403H108 728,493 -5,495 -0.75 261,646 3.03 3.7398
2024-11-04 2024-09-30 13F AON SHS CL A G0403H108 733,988 -2,833 -0.38 253,953 17.40 3.5276
2024-08-02 2024-06-30 13F AON SHS CL A G0403H108 736,821 15,017 2.08 216,316 -10.20 2.9256
2024-05-02 2024-03-31 13F AON SHS CL A G0403H108 721,804 8,754 1.23 240,880 16.08 3.3778
2024-02-12 2023-12-31 13F AON SHS CL A G0403H108 713,050 -7,527 -1.04 207,512 -11.18 3.1077
2023-11-13 2023-09-30 13F AON SHS CL A G0403H108 720,577 -29,265 -3.90 233,625 -9.74 3.6629
2023-08-11 2023-06-30 13F AON SHS CL A G0403H108 749,842 -12,664 -1.66 258,845 7.67 3.7798
2023-05-09 2023-03-31 13F AON SHS CL A G0403H108 762,506 -30,699 -3.87 240,411 0.98 3.7323
2023-02-07 2022-12-31 13F AON SHS CL A G0403H108 793,205 -52,696 -6.23 238,073 5.07 3.6493
2022-11-04 2022-09-30 13F AON SHS CL A G0403H108 845,901 -12,757 -1.49 226,592 -2.15 3.5967
2022-08-08 2022-06-30 13F AON SHS CL A G0403H108 858,658 -57,599 -6.29 231,563 -22.39 3.4283
2022-05-11 2022-03-31 13F AON SHS CL A G0403H108 916,257 -134,059 -12.76 298,361 -5.49 3.8407
2022-02-08 2021-12-31 13F AON SHS CL A G0403H108 1,050,316 -41,383 -3.79 315,683 1.19 3.9155
2021-11-03 2021-09-30 13F AON SHS CL A G0403H108 1,091,699 -85,829 -7.29 311,975 10.97 4.0460
2021-08-10 2021-06-30 13F AON SHS CL A G0403H108 1,177,528 -2,317 -0.20 281,147 3.56 3.5276
2021-05-11 2021-03-31 13F AON SHS CL A G0403H108 1,179,845 -75,118 -5.99 271,494 2.40 3.6872
2021-02-09 2020-12-31 13F AON SHS CL A G0403H108 1,254,963 357,873 39.89 265,136 43.26 3.4158
2020-11-13 2020-09-30 13F AON SHS CL A G0403H108 897,090 8,567 0.96 185,070 8.15 2.5729
2020-08-11 2020-06-30 13F AON SHS CL A G0403H108 888,523 136,393 18.13 171,130 37.86 2.3028
2020-05-08 2020-03-31 13F AON SHS CL A G0408V102 752,130 -156,550 -17.23 124,132 -34.42 1.7506
2020-02-13 2019-12-31 13F AON SHS CL A G0408V102 908,680 -226,450 -19.95 189,269 -13.86 1.8001
2019-11-13 2019-09-30 13F AON SHS CL A G0408V102 1,135,130 -349,768 -23.56 219,727 -23.32 2.0695
2019-08-14 2019-06-30 13F AON SHS CL A G0408V102 1,484,898 -196,027 -11.66 286,556 -0.13 2.4989
2019-05-28 2019-03-31 13F/A-1 AON SHS CL A G0408V102 1,680,925 -194,192 -10.36 286,934 5.27 2.5142
2019-05-14 2019-03-31 13F AON SHS CL A G0408V102 1,680,925 -194,192 286,934
2019-02-12 2018-12-31 13F AON SHS CL A G0408V102 1,875,117 -1,216,012 -39.34 272,567 -42.66 2.5901
2018-11-13 2018-09-30 13F AON COM G0408V102 3,091,129 -727,708 -19.06 475,354 -9.25 3.4414
2018-08-13 2018-06-30 13F AON COM G0408V102 3,818,837 -417,413 -9.85 523,830 -11.88 3.7631
2018-05-12 2018-03-31 13F AON COM G0408V102 4,236,250 -37,510 -0.88 594,473 3.80 4.5291
2018-02-10 2017-12-31 13F AON COM G0408V102 4,273,760 -207,930 -4.64 572,684 -12.54 4.2837
2017-11-14 2017-09-30 13F AON COM G0408V102 4,481,690 -394,400 -8.09 654,775 1.00 5.0303
2017-08-14 2017-06-30 13F AON COM G0408V102 4,876,090 -297,450 -5.75 648,276 5.57 4.9137
2017-05-12 2017-03-31 13F AON COM G0408V102 5,173,540 -261,600 -4.81 614,047 1.30 4.9279
2017-02-14 2016-12-31 13F AON COM G0408V102 5,435,140 -34,300 -0.63 606,181 -1.48 4.8288
2016-11-14 2016-09-30 13F AON COM G0408V102 5,469,440 -537,421 -8.95 615,257 -6.23 5.1043
2016-08-09 2016-06-30 13F AON COM G0408V102 6,006,861 -1,039,129 -14.75 656,129 -10.85 5.5318
2016-05-16 2016-03-31 13F AON COM G0408V102 7,045,990 -542,080 -7.14 735,954 5.18 6.6747
2016-02-16 2015-12-31 13F AON COM G0408V102 7,588,070 151,640 2.04 699,696 6.18 6.2060
2015-11-16 2015-09-30 13F AON COM G0408V102 7,436,430 285,130 3.99 658,942 -7.56 5.6789
2015-08-14 2015-06-30 13F AON COM G0408V102 7,151,300 53,600 0.76 712,842 4.49 5.8107
2015-05-15 2015-03-31 13F AON COM G0408V102 7,097,700 14,400 0.20 682,231 1.57 5.6678
2015-02-17 2014-12-31 13F AON COM G0408V102 7,083,300 424,200 6.37 671,709 15.06 5.3563
2014-11-14 2014-09-30 13F AON COM G0408V102 6,659,100 52,400 0.79 583,804 -1.91 4.8537
2014-08-14 2014-06-30 13F AON COM G0408V102 6,606,700 0 0.00 595,198 6.89 4.8328
2014-05-14 2014-03-31 13F AON COM G0408V102 6,606,700 264,500 4.17 556,813 4.65 4.8670
2014-02-12 2013-12-31 13F AON COM G0408V102 6,342,200 -507,700 -7.41 532,047 4.34 5.0104
2013-11-14 2013-09-30 13F AON CS G0408V102 6,849,900 -37,800 -0.55 509,906 15.05 5.2645
2013-08-14 2013-06-30 13F AON CS G0408V102 6,887,700 6,887,700 443,223 4.7206
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.