Aon plc
DE ˙ DB ˙ IE00BLP1HW54
270,60 € ↓ -1,70 (-0,62%)
2026-06-04
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership19,976 shares
Latest Disclosed Value $ 6,447,853
Millennium Management Llc ownership in 4VK / Aon plc

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 19,976 shares of Aon plc (DE:4VK) valued at $5,595,278 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 636,922 shares of Aon plc. This represents a change in shares of -96.86% during the quarter. The current value of the position is $5,405,506 USD.

Millennium Management Llc 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 14,900 of underlying shares valued at $4,809,422 USD and put options representing 21,800 of underlying shares valued at $7,036,604 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)
2026-05-15 2026-03-31 13F AON SHS CL A G0403H108 19,976 -616,946 -96.86 6,448 -97.13 0.0027
2026-02-17 2025-12-31 13F AON SHS CL A G0403H108 636,922 140,336 28.26 224,757 26.93 0.0945
2025-11-14 2025-09-30 13F AON SHS CL A G0403H108 496,586 489,463 6,871.59 177,073 6,868.60 0.0756
2025-08-14 2025-06-30 13F AON SHS CL A G0403H108 7,123 -418,555 -98.33 2,541 -98.50 0.0012
2025-05-15 2025-03-31 13F AON SHS CL A G0403H108 425,678 359,249 540.80 169,884 612.06 0.0904
2025-02-14 2024-12-31 13F AON SHS CL A G0403H108 66,429 -227,161 -77.37 23,859 -76.51 0.0117
2024-11-14 2024-09-30 13F AON SHS CL A G0403H108 293,590 53,903 22.49 101,579 44.36 0.0482
2024-08-14 2024-06-30 13F AON SHS CL A G0403H108 239,687 157,362 191.15 70,367 156.13 0.0326
2024-05-15 2024-03-31 13F AON SHS CL A G0403H108 82,325 -267,465 -76.46 27,473 -73.01 0.0117
2024-02-14 2023-12-31 13F AON SHS CL A G0403H108 349,790 223,139 176.18 101,796 147.91 0.0440
2023-11-14 2023-09-30 13F AON SHS CL A G0403H108 126,651 120,229 1,872.14 41,063 1,752.98 0.0207
2023-08-14 2023-06-30 13F AON SHS CL A G0403H108 6,422 -101,100 -94.03 2,217 -93.46 0.0011
2023-05-15 2023-03-31 13F AON SHS CL A G0403H108 107,522 -18,281 -14.53 33,901 -10.22 0.0194
2023-02-14 2022-12-31 13F AON SHS CL A G0403H108 125,803 -50,318 -28.57 37,759 -19.96 0.0209
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 176,121 -423,648 -70.64 47,178 -70.83 0.0279
2022-08-15 2022-06-30 13F AON SHS CL A G0403H108 599,769 548,672 1,073.79 161,746 872.09 0.1003
2022-05-16 2022-03-31 13F AON SHS CL A G0403H108 51,097 -113,330 -68.92 16,639 -66.33 0.0088
2022-02-14 2021-12-31 13F AON SHS CL A G0403H108 164,427 -162,421 -49.69 49,420 -47.09 0.0251
2021-11-15 2021-09-30 13F AON SHS CL A G0403H108 326,848 -240,715 -42.41 93,403 -31.07 0.0560
2021-08-16 2021-06-30 13F AON SHS CL A G0403H108 567,563 77,604 15.84 135,511 20.19 0.0831
2021-05-17 2021-03-31 13F AON SHS CL A G0403H108 489,959 156,628 46.99 112,744 60.10 0.0807
2021-02-16 2020-12-31 13F AON SHS CL A G0403H108 333,331 313,817 1,608.16 70,423 1,649.21 0.0509
2020-11-16 2020-09-30 13F AON SHS CL A G0403H108 19,514 16,612 572.43 4,026 620.21 0.0050
2020-08-14 2020-06-30 13F AON SHS CL A G0403H108 2,902 -90,669 -96.90 559 -96.38 0.0008
2020-05-14 2020-03-31 13F AON SHS CL A G0408V102 93,571 -90,055 -49.04 15,443 -59.62 0.0347
2020-02-14 2019-12-31 13F AON SHS CL A G0408V102 183,626 14,743 8.73 38,247 17.00 0.0479
2019-11-14 2019-09-30 13F AON SHS CL A G0408V102 168,883 68,120 67.60 32,690 68.12 0.0517
2019-08-15 2019-06-30 13F/A-1 AON SHS CL A G0408V102 100,763 -103,322 -50.63 19,445 -44.18 0.0292
2019-08-14 2019-06-30 13F ALLSCRIPTS HEALTHCARE SOLUTN COM G0408V102 1,199,809 995,724 13,954
2019-05-14 2019-03-31 13F AON SHS CL A G0408V102 204,085 137,134 204.83 34,837 257.96 0.0521
2019-02-15 2018-12-31 13F/A-1 AON SHS CL A G0408V102 66,951 -119,797 -64.15 9,732 -66.11 0.0152
2019-02-14 2018-12-31 13F AON SHS CL A G0408V102 66,951 9,732
2018-11-14 2018-09-30 13F AON SHS CL A G0408V102 186,748 -575,621 -75.50 28,718 -72.54 0.0352
2018-08-14 2018-06-30 13F AON SHS CL A G0408V102 762,369 274,617 56.30 104,574 52.78 0.1364
2018-05-15 2018-03-31 13F AON SHS CL A G0408V102 487,752 386,484 381.64 68,446 404.39 0.0913
2018-02-14 2017-12-31 13F AON SHS CL A G0408V102 101,268 55,439 120.97 13,570 102.66 0.0187
2017-11-14 2017-09-30 13F AON SHS CL A G0408V102 45,829 18,965 70.60 6,696 87.46 0.0102
2017-08-14 2017-06-30 13F AON SHS CL A G0408V102 26,864 26,864 -41.38 3,572 -46.65 0.0064
2017-02-14 2016-12-31 13F AON SHS CL A G0408V102 0 -59,439 -100.00 0 -100.00
2016-11-14 2016-09-30 13F AON SHS CL A G0408V102 59,439 -128,464 -68.37 6,686 -67.43 0.0112
2016-08-15 2016-06-30 13F AON SHS CL A G0408V102 187,903 184,903 6,163.43 20,525 6,457.51 0.0470
2016-05-16 2016-03-31 13F AON SHS CL A G0408V102 3,000 -26,200 -89.73 313 -88.38 0.0008
2016-02-16 2015-12-31 13F AON SHS CL A G0408V102 29,200 25,635 719.07 2,693 752.22 0.0057
2015-11-16 2015-09-30 13F AON SHS CL A G0408V102 3,565 3,565 -87.79 316 -88.27 0.0006
2015-08-14 2015-06-30 13F AON SHS CL A G0408V102 0 -537,575 -100.00 0 -100.00
2015-05-15 2015-03-31 13F AON SHS CL A G0408V102 537,575 537,575 0.00 51,672 0.0961
2014-08-14 2014-06-30 13F AON SHS CL A G0408V102 0 -206,545 -100.00 0 -100.00
2014-05-15 2014-03-31 13F AON SHS CL A G0408V102 206,545 176,545 588.48 17,408 591.62 0.0505
2014-02-14 2013-12-31 13F AON SHS CL A G0408V102 30,000 -171,833 -85.14 2,517 -83.25 0.0079
2013-11-14 2013-09-30 13F AON SHS CL A G0408V102 201,833 128,708 176.01 15,024 219.25 0.0484
2013-08-14 2013-06-30 13F AON SHS CL A G0408V102 73,125 73,125 4,706 0.0144
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
(%)
2026-05-15 2026-03-31 13F AON SHS CL A Call 14,900 101.35 4,809 84.18 n/a n/a n/a
2026-02-17 2025-12-31 13F AON SHS CL A Call 7,400 -53.16 2,611 -53.65 n/a n/a n/a
2025-11-14 2025-09-30 13F AON SHS CL A Call 15,800 -3.07 5,634 -3.13 n/a n/a n/a
2025-08-14 2025-06-30 13F AON SHS CL A Call 16,300 -22.01 5,815 -30.28 n/a n/a n/a
2025-05-15 2025-03-31 13F AON SHS CL A Call 20,900 -43.97 8,341 -37.74 n/a n/a n/a
2025-02-14 2024-12-31 13F AON SHS CL A Call 37,300 881.58 13,397 919.48 n/a n/a n/a
2024-11-14 2024-09-30 13F AON SHS CL A Call 3,800 -92.55 1,315 -91.22 n/a n/a n/a
2024-08-14 2024-06-30 13F AON SHS CL A Call 51,000 13.33 14,973 -0.30 n/a n/a n/a
2024-05-15 2024-03-31 13F AON SHS CL A Call 45,000 -47.92 15,017 -40.28 n/a n/a n/a
2024-02-14 2023-12-31 13F AON SHS CL A Call 86,400 48.71 25,144 33.48 n/a n/a n/a
2023-11-14 2023-09-30 13F AON SHS CL A Call 58,100 89.25 18,837 77.76 n/a n/a n/a
2023-08-14 2023-06-30 13F AON SHS CL A Call 30,700 -66.85 10,598 -63.70 n/a n/a n/a
2023-05-15 2023-03-31 13F AON SHS CL A Call 92,600 -21.33 29,196 -17.35 n/a n/a n/a
2023-02-14 2022-12-31 13F AON SHS CL A Call 117,700 102.23 35,326 126.59 n/a n/a n/a
2022-11-14 2022-09-30 13F AON SHS CL A Call 58,200 568.97 15,590 564.54 n/a n/a n/a
2022-08-15 2022-06-30 13F AON SHS CL A Call 8,700 625.00 2,346 500.00 n/a n/a n/a
2022-05-16 2022-03-31 13F AON SHS CL A Call 1,200 -87.10 391 -86.01 n/a n/a n/a
2022-02-14 2021-12-31 13F AON SHS CL A Call 9,300 -68.69 2,795 -67.07 n/a n/a n/a
2021-11-15 2021-09-30 13F AON SHS CL A Call 29,700 -83.98 8,487 -80.83 n/a n/a n/a
2021-08-16 2021-06-30 13F AON SHS CL A Call 185,400 716.74 44,266 747.52 n/a n/a n/a
2021-05-17 2021-03-31 13F AON SHS CL A Call 22,700 138.95 5,223 160.24 n/a n/a n/a
2021-02-16 2020-12-31 13F AON SHS CL A Call 9,500 -1.04 2,007 1.36 n/a n/a n/a
2020-11-16 2020-09-30 13F AON SHS CL A Call 9,600 -66.55 1,980 -64.18 n/a n/a n/a
2020-08-14 2020-06-30 13F AON SHS CL A Call 28,700 5,528 n/a n/a n/a
Disclosed Put 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
(%)
2026-05-15 2026-03-31 13F AON SHS CL A Put 21,800 19.13 7,037 8.97 n/a n/a n/a
2026-02-17 2025-12-31 13F AON SHS CL A Put 18,300 195.16 6,458 192.17 n/a n/a n/a
2025-11-14 2025-09-30 13F AON SHS CL A Put 6,200 19.23 2,211 19.14 n/a n/a n/a
2025-08-14 2025-06-30 13F AON SHS CL A Put 5,200 62.50 1,855 45.26 n/a n/a n/a
2025-05-15 2025-03-31 13F AON SHS CL A Put 3,200 -91.75 1,277 -90.84 n/a n/a n/a
2025-02-14 2024-12-31 13F AON SHS CL A Put 38,800 361.90 13,935 379.53 n/a n/a n/a
2024-11-14 2024-09-30 13F AON SHS CL A Put 8,400 2,906 n/a n/a n/a
2024-08-14 2024-06-30 13F AON SHS CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-15 2024-03-31 13F AON SHS CL A Put 5,800 -95.93 1,936 -95.33 n/a n/a n/a
2024-02-14 2023-12-31 13F AON SHS CL A Put 142,400 -0.63 41,441 -10.80 n/a n/a n/a
2023-11-14 2023-09-30 13F AON SHS CL A Put 143,300 -3.37 46,461 -9.25 n/a n/a n/a
2023-08-14 2023-06-30 13F AON SHS CL A Put 148,300 0.75 51,193 10.30 n/a n/a n/a
2023-05-15 2023-03-31 13F AON SHS CL A Put 147,200 -30.89 46,411 -27.40 n/a n/a n/a
2023-02-14 2022-12-31 13F AON SHS CL A Put 213,000 -14.08 63,930 -3.73 n/a n/a n/a
2022-11-14 2022-09-30 13F AON SHS CL A Put 247,900 296.01 66,405 293.35 n/a n/a n/a
2022-08-15 2022-06-30 13F AON SHS CL A Put 62,600 1,505.13 16,882 1,229.29 n/a n/a n/a
2022-05-16 2022-03-31 13F AON SHS CL A Put 3,900 1,270 n/a n/a n/a
2021-11-15 2021-09-30 13F AON SHS CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-08-16 2021-06-30 13F AON SHS CL A Put 60,000 14,326 n/a n/a n/a
2021-05-17 2021-03-31 13F AON SHS CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-16 2020-12-31 13F AON SHS CL A Put 3,100 655 n/a n/a n/a
2020-11-16 2020-09-30 13F AON SHS CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-08-14 2020-06-30 13F AON SHS CL A Put 34,000 6,548 n/a n/a n/a
2019-05-14 2019-03-31 13F AON SHS CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-02-15 2018-12-31 13F/A AON SHS CL A Put 50,000 7,268 n/a n/a n/a
2019-02-14 2018-12-31 13F AON SHS CL A Put 50,000 7,268 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.