Aon plc
DE ˙ DB ˙ IE00BLP1HW54
272,30 € ↓ -1,70 (-0,62%)
2026-06-03
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionBloombergSen Inc.
Latest Disclosed Ownership254,006 shares
Latest Disclosed Value $ 81,988,057
BloombergSen Inc. ownership in 4VK / Aon plc

On May 8, 2026 - BloombergSen Inc. filed a 13F-HR form disclosing ownership of 254,006 shares of Aon plc (DE:4VK) valued at $71,147,081 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 262,750 shares of Aon plc. This represents a change in shares of -3.33% during the quarter. The current value of the position is $69,165,834 USD.

BloombergSen Inc. has a history of taking positions in derivatives of the underlying security (4VK) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DE:4VK / Aon plc Historical Put/Call Ratio
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)
2026-05-08 2026-03-31 13F AON SHS CL A G0403H108 254,006 -8,744 -3.33 81,988 -11.57 6.0046
2026-02-06 2025-12-31 13F AON SHS CL A G0403H108 262,750 -20,334 -7.18 92,719 -8.15 6.7653
2025-10-29 2025-09-30 13F AON SHS CL A G0403H108 283,084 -2,943 -1.03 100,942 -1.08 6.2557
2025-07-18 2025-06-30 13F AON SHS CL A G0403H108 286,027 -3,498 -1.21 102,043 -11.69 6.2588
2025-05-06 2025-03-31 13F AON SHS CL A G0403H108 289,525 -5,081 -1.72 115,547 9.20 7.1640
2025-02-12 2024-12-31 13F AON SHS CL A G0403H108 294,606 0 0.00 105,811 3.81 6.4442
2024-10-31 2024-09-30 13F AON SHS CL A G0403H108 294,606 0 0.00 101,931 17.85 5.8631
2024-07-29 2024-06-30 13F AON SHS CL A G0403H108 294,606 -10,466 -3.43 86,490 -15.05 5.4404
2024-05-14 2024-03-31 13F AON SHS CL A G0403H108 305,072 -6,049 -1.94 101,809 12.44 5.9029
2024-02-13 2023-12-31 13F AON SHS CL A G0403H108 311,121 -45,739 -12.82 90,542 -21.74 5.6923
2023-11-13 2023-09-30 13F AON SHS CL A G0403H108 356,860 -9,404 -2.57 115,701 -8.48 7.8896
2023-08-14 2023-06-30 13F AON SHS CL A G0403H108 366,264 -14,961 -3.92 126,416 5.17 8.6810
2023-05-15 2023-03-31 13F AON SHS CL A G0403H108 381,225 -5,571 -1.44 120,196 3.54 8.2421
2023-02-14 2022-12-31 13F AON SHS CL A G0403H108 386,796 -98,152 -20.24 116,093 -10.63 7.6722
2022-11-10 2022-09-30 13F AON SHS CL A G0403H108 484,948 -37,354 -7.15 129,903 -7.77 8.9404
2022-08-11 2022-06-30 13F AON SHS CL A G0403H108 522,302 -13,050 -2.44 140,854 -19.20 8.6925
2022-05-16 2022-03-31 13F AON SHS CL A G0403H108 535,352 -2,593 -0.48 174,327 7.82 9.3248
2022-02-11 2021-12-31 13F AON SHS CL A G0403H108 537,945 -1,472 -0.27 161,679 4.88 7.6537
2021-11-16 2021-09-30 13F/A-1 AON SHS CL A G0403H108 539,417 40,944 8.21 154,149 29.52 7.9016
2021-11-12 2021-09-30 13F AON SHS CL A G0403H108 539,417 40,944 154,149 7.9016
2021-08-11 2021-06-30 13F AON SHS CL A G0403H108 498,473 -74,100 -12.94 119,015 -9.67 6.2576
2021-05-14 2021-03-31 13F AON SHS CL A G0403H108 572,573 -5,456 -0.94 131,755 7.89 7.1931
2021-02-11 2020-12-31 13F AON SHS CL A G0403H108 578,029 0 0.00 122,120 2.41 7.4826
2020-11-12 2020-09-30 13F AON SHS CL A G0403H108 578,029 -64,206 -10.00 119,247 -3.60 8.6428
2020-08-12 2020-06-30 13F AON SHS CL A G0403H108 642,235 -24,956 -3.74 123,694 12.33 8.5680
2020-05-12 2020-03-31 13F AON SHS CL A G0408V102 667,191 -76,173 -10.25 110,113 -28.88 9.4815
2020-02-14 2019-12-31 13F AON SHS CL A G0408V102 743,364 5,962 0.81 154,828 8.47 7.9224
2019-11-14 2019-09-30 13F AON SHS CL A G0408V102 737,402 9,671 1.33 142,739 1.72 8.5169
2019-08-14 2019-06-30 13F AON SHS CL A G0408V102 727,731 15,799 2.22 140,328 15.48 8.4429
2019-05-15 2019-03-31 13F AON SHS CL A G0408V102 711,932 22,746 3.30 121,513 21.29 8.0343
2019-02-14 2018-12-31 13F AON SHS CL A G0408V102 689,186 4,277 0.62 100,187 -4.88 8.3348
2018-11-14 2018-09-30 13F AON SHS CL A G0408V102 684,909 4,350 0.64 105,325 12.83 5.7914
2018-08-14 2018-06-30 13F AON SHS CL A G0408V102 680,559 3,459 0.51 93,352 -2.06 6.0862
2018-05-15 2018-03-31 13F AON SHS CL A G0408V102 677,100 -3,600 -0.53 95,315 4.49 6.9022
2018-02-14 2017-12-31 13F AON SHS CL A G0408V102 680,700 1,925 0.28 91,221 -8.00 6.9105
2017-11-14 2017-09-30 13F AON SHS CL A G0408V102 678,775 -2,806 -0.41 99,155 9.42 7.9395
2017-08-14 2017-06-30 13F AON SHS CL A G0408V102 681,581 0 0.00 90,616 12.01 8.2787
2017-05-15 2017-03-31 13F AON SHS CL A G0408V102 681,581 59,791 9.62 80,897 16.65 6.7992
2017-02-08 2016-12-31 13F AON SHS CL A G0408V102 621,790 57,885 10.27 69,348 9.32 5.9619
2016-11-09 2016-09-30 13F AON SHS CL A G0408V102 563,905 28,000 5.22 63,434 8.37 6.1993
2016-07-27 2016-06-30 13F AON SHS CL A G0408V102 535,905 535,905 0.00 58,537 6.1719
2016-05-13 2016-03-31 13F AON SHS CL A G0408V102 0 -735,842 -100.00 0 -100.00
2016-02-16 2015-12-31 13F AON SHS CL A G0408V102 735,842 -842,659 -53.38 67,852 -51.49 5.0290
2015-11-16 2015-09-30 13F AON SHS CL A G0408V102 1,578,501 51,528 3.37 139,871 -8.11 7.8959
2015-08-14 2015-06-30 13F AON SHS CL A G0408V102 1,526,973 128,893 9.22 152,209 13.27 7.9328
2015-04-10 2015-03-31 13F AON Class A Shares G0408V102 1,398,080 11,961 0.86 134,383 2.23 8.3197
2015-02-11 2014-12-31 13F AON Class A Shares G0408V102 1,386,119 0 0.00 131,446 8.17 9.3062
2014-11-07 2014-09-30 13F/A-1 AON Common Stock G0408V102 1,386,119 0 0.00 121,521 -2.69 8.9852
2014-11-05 2014-09-30 13F AON Common Stock G0408V102 1,386,119 121,521
2014-08-08 2014-06-30 13F AON Common Stock G0408V102 1,386,119 -31,341 -2.21 124,875 -5.29 10.2989
2014-04-30 2014-03-31 13F AON Common Stock G0408V102 1,417,460 355,300 33.45 131,855 38.51 10.5979
2014-02-05 2013-12-31 13F AON Common Stock G0408V102 1,062,160 95,407 9.87 95,196 32.28 8.1621
2013-11-08 2013-09-30 13F AON Common Stock G0408V102 966,753 6,603 0.69 71,965 16.47 7.6555
2013-08-01 2013-06-30 13F AON Common Stock G0408V102 960,150 960,150 61,786 7.6007
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2014-04-30 2014-03-31 13F AON Common Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-02-05 2013-12-31 13F AON Common Stock Call 355,300 -15.47 29,806 -4.73 n/a n/a n/a
2013-11-08 2013-09-30 13F AON Common Stock Call 420,300 0.60 31,287 16.37 n/a n/a n/a
2013-08-01 2013-06-30 13F AON Common Stock Call 417,800 26,885 n/a n/a n/a
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.