Aon plc
DE ˙ DB ˙ IE00BLP1HW54
276,10 € ↑5,50 (2,03%)
2026-06-05
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionViolich Capital Management, Inc.
Latest Disclosed Ownership21,365 shares
Latest Disclosed Value $ 6,896,195
Violich Capital Management, Inc. reports 1.12% decrease in ownership of 4VK / Aon plc

On April 8, 2026 - Violich Capital Management, Inc. filed a 13F-HR form disclosing ownership of 21,365 shares of Aon plc (DE:4VK) valued at $5,984,337 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 21,608 shares of Aon plc. This represents a change in shares of -1.12% during the quarter. The current value of the position is $5,898,877 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)
2026-04-08 2026-03-31 13F AON Plc Cl A COM G0403H108 21,365 -243 -1.12 6,896 -9.56 0.8061
2026-02-03 2025-12-31 13F AON Plc Cl A COM G0403H108 21,608 600 2.86 7,625 1.79 0.8509
2025-10-29 2025-09-30 13F AON Plc Cl A COM G0403H108 21,008 -300 -1.41 7,491 -1.45 0.8913
2025-07-29 2025-06-30 13F AON Plc Cl A COM G0403H108 21,308 -300 -1.39 7,602 94,912.50 1.0698
2025-05-02 2025-03-31 13F Aon COM G0403H108 21,608 0 0.00 9 14.29 1.1635
2025-01-29 2024-12-31 13F Aon COM G0403H108 21,608 -25 -0.12 8 0.00 1.0095
2024-10-18 2024-09-30 13F Aon COM G0403H108 21,633 0 0.00 7 16.67 0.9729
2024-07-25 2024-06-30 13F Aon COM G0403H108 21,633 215 1.00 6 -14.29 0.8582
2024-04-30 2024-03-31 13F Aon COM G0403H108 21,418 50 0.23 7 16.67 1.0229
2024-01-26 2023-12-31 13F Aon COM G0403H108 21,368 -210 -0.97 6 0.00 1.0095
2023-10-12 2023-09-30 13F Aon COM G0403H108 21,578 -617 -2.78 7 -14.29 1.1937
2023-07-25 2023-06-30 13F Aon COM G0403H108 22,195 -225 -1.00 8 0.00 1.2347
2023-04-18 2023-03-31 13F Aon COM G0403H108 22,420 -200 -0.88 7 16.67 1.2047
2023-01-24 2022-12-31 13F Aon COM G0403H108 22,620 200 0.89 7 -99.90 1.2054
2022-10-17 2022-09-30 13F Aon COM G0403H108 22,420 -183 -0.81 6,006 -1.48 1.1314
2022-07-25 2022-06-30 13F Aon COM G0403H108 22,603 -116 -0.51 6,096 -17.60 1.0680
2022-04-25 2022-03-31 13F Aon COM G0403H108 22,719 -401 -1.73 7,398 6.46 1.0925
2022-01-26 2021-12-31 13F Aon COM G0403H108 23,120 -50 -0.22 6,949 4.95 0.9982
2021-10-12 2021-09-30 13F Aon COM G0403H108 23,170 1,900 8.93 6,621 30.39 1.0647
2021-07-29 2021-06-30 13F Aon COM G0403H108 21,270 -1,175 -5.24 5,078 -1.68 0.8521
2021-04-30 2021-03-31 13F Aon COM G0403H108 22,445 -50 -0.22 5,165 8.67 0.9312
2021-01-29 2020-12-31 13F Aon COM G0403H108 22,495 0 0.00 4,753 2.41 0.9186
2020-10-19 2020-09-30 13F Aon COM G0403H108 22,495 -5 -0.02 4,641 7.08 0.9780
2020-08-03 2020-06-30 13F Aon COM G0403H108 22,500 0 0.00 4,334 16.73 0.9487
2020-04-30 2020-03-31 13F Aon COM G0403H108 22,500 -1,670 -6.91 3,713 -26.24 0.9937
2020-01-16 2019-12-31 13F Aon COM G0408V102 24,170 -300 -1.23 5,034 6.27 1.0982
2019-11-06 2019-09-30 13F Aon COM G0408V102 24,470 -450 -1.81 4,737 -1.50 1.1398
2019-07-22 2019-06-30 13F Aon COM G0408V102 24,920 -75 -0.30 4,809 12.70 1.1827
2019-05-07 2019-03-31 13F Aon COM G0408V102 24,995 -125 -0.50 4,267 16.87 1.0817
2019-02-12 2018-12-31 13F Aon COM G0408V102 25,120 -805 -3.11 3,651 -8.43 1.0361
2018-11-08 2018-09-30 13F Aon COM G0408V102 25,925 -100 -0.38 3,987 11.68 0.9109
2018-08-03 2018-06-30 13F Aon COM G0408V102 26,025 300 1.17 3,570 -1.11 0.8983
2018-05-11 2018-03-31 13F Aon COM G0408V102 25,725 -1,865 -6.76 3,610 -2.35 0.9660
2018-03-01 2017-12-31 13F Aon COM G0408V102 27,590 1,000 3.76 3,697 -4.84 0.9412
2017-11-14 2017-09-30 13F Aon COM G0408V102 26,590 -100 -0.37 3,885 9.50 1.0605
2017-08-14 2017-06-30 13F Aon COM G0408V102 26,690 0 0.00 3,548 11.99 1.0356
2017-05-11 2017-03-31 13F Aon COM G0408V102 26,690 100 0.38 3,168 3.46 0.9578
2017-02-10 2016-12-31 13F Aon COM G0408V102 26,590 2,150 8.80 3,062 11.39 0.9403
2016-11-08 2016-09-30 13F Aon COM G0408V102 24,440 -550 -2.20 2,749 0.70 0.9631
2016-08-15 2016-06-30 13F Aon COM G0408V102 24,990 -250 -0.99 2,730 3.57 0.8615
2016-05-13 2016-03-31 13F/A-1 Aon COM G0408V102 25,240 -150 -0.59 2,636 12.60 0.8471
2016-05-09 2016-03-31 13F Aon COM G0408V102 25,240 2,636
2016-02-09 2015-12-31 13F Aon COM G0408V102 25,390 -100 -0.39 2,341 3.63 0.7757
2015-11-05 2015-09-30 13F Aon COM G0408V102 25,490 -150 -0.59 2,259 -11.62 0.7910
2015-08-11 2015-06-30 13F Aon COM G0408V102 25,640 -350 -1.35 2,556 2.32 0.8347
2015-05-12 2015-03-31 13F Aon COM G0408V102 25,990 100 0.39 2,498 1.75 0.8113
2015-02-06 2014-12-31 13F Aon COM G0408V102 25,890 1,100 4.44 2,455 12.98 0.7804
2014-11-14 2014-09-30 13F Aon COM G0408V102 24,790 1,200 5.09 2,173 2.26 0.7078
2014-08-14 2014-06-30 13F Aon COM G0408V102 23,590 150 0.64 2,125 7.54 0.7106
2014-05-15 2014-03-31 13F Aon COM G0408V102 23,440 -1,350 -5.45 1,976 -5.00 0.6882
2014-02-18 2013-12-31 13F Aon COM G0408V102 24,790 5,020 25.39 2,080 41.30 0.7459
2013-11-25 2013-09-30 13F Aon COM G0408V102 19,770 2,460 14.21 1,472 32.14 0.5740
2013-08-13 2013-06-30 13F Aon COM G0408V102 17,310 17,310 1,114 0.4513
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.