Aon plc
DE ˙ DB ˙ IE00BLP1HW54
276,10 € ↑5,50 (2,03%)
2026-06-05
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionCarderock Capital Management Inc
Latest Disclosed Ownership21,586 shares
Latest Disclosed Value $ 6,967,529
Carderock Capital Management Inc reports 3.80% decrease in ownership of 4VK / Aon plc

On April 10, 2026 - Carderock Capital Management Inc filed a 13F-HR form disclosing ownership of 21,586 shares of Aon plc (DE:4VK) valued at $6,046,239 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 22,438 shares of Aon plc. This represents a change in shares of -3.80% during the quarter. The current value of the position is $5,959,895 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)
2026-04-10 2026-03-31 13F AON SHS CL A G0403H108 21,586 -852 -3.80 6,968 -12.00 1.7212
2026-01-09 2025-12-31 13F AON SHS CL A G0403H108 22,438 797 3.68 7,918 2.60 1.9184
2025-10-17 2025-09-30 13F Aon COM G0403H108 21,641 1,396 6.90 7,717 6.84 1.8762
2025-07-10 2025-06-30 13F Aon COM G0403H108 20,245 694 3.55 7,223 -7.43 1.8503
2025-05-27 2025-03-31 13F Aon COM G0403H108 19,551 1,054 5.70 7,803 17.45 2.0679
2025-01-15 2024-12-31 13F Aon COM G0403H108 18,497 970 5.53 6,643 9.55 1.6663
2024-10-16 2024-09-30 13F Aon COM G0403H108 17,527 -1,253 -6.67 6,064 9.99 1.4317
2024-07-22 2024-06-30 13F Aon COM G0403H108 18,780 -1,157 -5.80 5,513 -17.14 1.4427
2024-04-23 2024-03-31 13F Aon COM G0403H108 19,937 -5,831 -22.63 6,653 -11.28 1.8649
2024-01-23 2023-12-31 13F Aon COM G0403H108 25,768 462 1.83 7,499 -8.59 2.0707
2023-10-23 2023-09-30 13F Aon COM G0403H108 25,306 149 0.59 8,205 102,450.00 2.7533
2023-07-25 2023-06-30 13F Aon COM G0403H108 25,157 6,741 36.60 9 -99.86 2.6926
2023-04-19 2023-03-31 13F Aon COM G0403H108 18,416 2,136 13.12 5,806 145,050.00 2.0236
2023-01-20 2022-12-31 13F Aon COM G0403H108 16,280 14 0.09 5 -99.91 2.0262
2022-11-04 2022-09-30 13F/A-1 Aon COM G0403H108 16,266 -512 -3.05 4,357 -3.71 2.2237
2022-10-21 2022-09-30 13F Aon COM G0403H108 16,778 0 4,525 1.8899
2022-07-21 2022-06-30 13F Aon COM G0403H108 16,778 -1,037 -5.82 4,525 -22.00 1.8899
2022-04-28 2022-03-31 13F Aon COM G0403H108 17,815 -6,202 -25.82 5,801 -19.64 1.8734
2022-01-31 2021-12-31 13F Aon COM G0403H108 24,017 -72 -0.30 7,219 4.87 1.7336
2021-10-29 2021-09-30 13F Aon COM G0403H108 24,089 30 0.12 6,884 19.85 1.9399
2021-07-30 2021-06-30 13F Aon COM G0403H108 24,059 -1,375 -5.41 5,744 -1.86 1.5750
2021-05-07 2021-03-31 13F Aon COM G0403H108 25,434 -184 -0.72 5,853 8.15 1.7486
2021-02-05 2020-12-31 13F Aon COM G0403H108 25,618 1 0.00 5,412 2.40 1.6335
2020-10-27 2020-09-30 13F Aon COM G0403H108 25,617 -111 -0.43 5,285 6.66 1.7853
2020-08-04 2020-06-30 13F Aon COM G0403H108 25,728 411 1.62 4,955 18.60 1.8265
2020-05-11 2020-03-31 13F Aon COM G0403H108 25,317 -251 -0.98 4,178 -21.55 1.9160
2020-02-04 2019-12-31 13F Aon COM G0408V102 25,568 514 2.05 5,326 9.81 1.7872
2019-10-23 2019-09-30 13F Aon COM G0408V102 25,054 204 0.82 4,850 1.13 1.7851
2019-07-15 2019-06-30 13F Aon COM G0408V102 24,850 -165 -0.66 4,796 12.32 1.8104
2019-04-23 2019-03-31 13F Aon COM G0408V102 25,015 170 0.68 4,270 18.25 1.7418
2019-02-14 2018-12-31 13F Aon COM G0408V102 24,845 166 0.67 3,611 -4.85 1.8651
2018-11-13 2018-09-30 13F Aon COM G0408V102 24,679 109 0.44 3,795 12.61 1.4970
2018-07-16 2018-06-30 13F Aon COM G0408V102 24,570 -192 -0.78 3,370 -3.02 1.4540
2018-04-27 2018-03-31 13F Aon COM G0408V102 24,762 -205 -0.82 3,475 3.86 1.5341
2018-01-25 2017-12-31 13F Aon COM G0408V102 24,967 741 3.06 3,346 -5.45 1.4745
2017-11-15 2017-09-30 13F Aon COM G0408V102 24,226 128 0.53 3,539 10.46 1.5964
2017-08-09 2017-06-30 13F Aon COM G0408V102 24,098 419 1.77 3,204 14.02 1.4454
2017-04-17 2017-03-31 13F Aon COM G0408V102 23,679 167 0.71 2,810 7.17 1.3000
2017-02-08 2016-12-31 13F Aon COM G0408V102 23,512 -198 -0.84 2,622 -1.69 1.3077
2016-11-02 2016-09-30 13F Aon COM G0408V102 23,710 1,191 5.29 2,667 8.41 1.3354
2016-08-15 2016-06-30 13F Aon COM G0408V102 22,519 -472 -2.05 2,460 2.46 1.3019
2016-05-03 2016-03-31 13F Aon COM G0408V102 22,991 15,237 196.51 2,401 235.80 1.2324
2016-02-11 2015-12-31 13F Aon COM G0408V102 7,754 4,343 127.32 715 136.75 0.3722
2015-11-04 2015-09-30 13F Aon COM G0408V102 3,411 936 37.82 302 22.27 0.1684
2015-07-31 2015-06-30 13F Aon COM G0408V102 2,475 2,475 247 0.1240
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.