Aon plc
DE ˙ DB ˙ IE00BLP1HW54
272,30 € ↓ -1,70 (-0,62%)
2026-06-03
AKTIENPREIS
SecurityDE:4VK / Aon plc
InstitutionBarclays Plc
Latest Disclosed Ownership588,544 shares
Latest Disclosed Value $ 207,685,405
Barclays Plc ownership in 4VK / Aon plc

On February 13, 2026 - Barclays Plc filed a 13F-HR form disclosing ownership of 588,544 shares of Aon plc (DE:4VK) valued at $177,504,870 USD as of December 31, 2025. The entity filed a previous 13F-HR/A on March 31, 2026 disclosing 673,718 shares of Aon plc. This represents a change in shares of -12.64% during the quarter. The current value of the position is $160,260,531 USD.

Barclays Plc 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 and put 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)
2026-02-13 2025-12-31 13F AON COM G0403H108 588,544 -85,174 -12.64 207,685 -13.55 0.0498
2026-03-31 2025-09-30 13F/A-3 AON COM G0403H108 673,718 22,872 3.51 240,234 3.46 0.0521
2026-03-19 2025-09-30 13F/A-2 AON COM G0403H108 711,557 60,711 246,192 0.0653
2025-11-12 2025-09-30 13F AON COM G0403H108 673,718 22,872 240,234 0.0521
2026-02-27 2025-06-30 13F/A-2 AON COM G0403H108 650,846 -228,083 -25.95 232,196 -33.80 0.0532
2025-08-14 2025-06-30 13F/A-1 AON COM G0403H108 650,846 -228,083 232 0.0532
2025-08-13 2025-06-30 13F AON COM G0403H108 650,846 -228,083 232 0.0174
2026-03-17 2025-03-31 13F/A-1 AON COM G0403H108 878,929 332,385 60.82 350,772 78.69 0.0995
2025-05-15 2025-03-31 13F AON COM G0403H108 878,929 332,385 351 0.0994
2026-03-19 2024-12-31 13F/A-1 AON COM G0403H108 546,544 -165,013 -23.19 196,297 -20.27 0.0550
2025-02-13 2024-12-31 13F AON COM G0403H108 546,544 -165,013 196 0.0550
2026-03-31 2024-09-30 13F/A-2 AON COM G0403H108 711,557 -259,406 -26.72 246,192 -13.63 0.0653
2024-11-19 2024-09-30 13F/A-1 AON COM G0403H108 711,557 -259,406 246 0.0653
2024-11-15 2024-09-30 13F AON COM G0403H108 711,557 -259,406 246 0.0198
2026-03-23 2024-06-30 13F/A-1 AON COM G0403H108 970,963 19,888 2.09 285,055 -10.19 0.0871
2024-08-14 2024-06-30 13F AON COM G0403H108 970,963 19,888 285 0.0871
2026-03-24 2024-03-31 13F/A-1 AON COM G0403H108 951,075 170,604 21.86 317,393 39.74 0.1104
2024-05-15 2024-03-31 13F AON COM G0403H108 951,075 170,604 317 0.1104
2026-03-25 2023-12-31 13F/A-1 AON COM G0403H108 780,471 -45,875 -5.55 227,133 -15.22 0.0833
2024-02-15 2023-12-31 13F AON COM G0403H108 780,471 -45,875 227 0.0833
2026-03-26 2023-09-30 13F/A-1 AON COM G0403H108 826,346 -5,557 -0.67 267,918 -6.71 0.1669
2023-11-07 2023-09-30 13F AON COM G0403H108 826,346 -5,557 268 0.1669
2026-03-30 2023-06-30 13F/A-2 AON COM G0403H108 831,903 555,078 200.52 287,173 229.02 0.1818
2023-09-20 2023-06-30 13F/A-1 AON COM G0403H108 831,903 555,078 287 0.1818
2023-08-03 2023-06-30 13F AON COM G0403H108 831,903 555,078 287 0.1811
2026-03-30 2023-03-31 13F/A-1 AON COM G0403H108 276,825 -381,590 -57.96 87,280 -55.83 0.0401
2023-05-04 2023-03-31 13F AON COM G0403H108 276,825 -381,590 87 0.0401
2026-03-30 2022-12-31 13F/A-1 AON COM G0403H108 658,415 294,083 80.72 197,617 102.49 0.0885
2023-02-13 2022-12-31 13F AON COM G0403H108 658,415 294,083 198 0.0885
2022-11-03 2022-09-30 13F AON COM G0403H108 364,332 -3,491 -0.95 97,592 -1.62 0.1065
2022-08-12 2022-06-30 13F AON COM G0403H108 367,823 -54,504 -12.91 99,195 -27.87 0.0607
2022-05-16 2022-03-31 13F AON COM G0403H108 422,327 422,327 137,523 0.1077
2020-08-12 2020-06-30 13F AON COM G0408V102 0 -343,557 -100.00 0 -100.00
2020-05-13 2020-03-31 13F AON COM G0408V102 343,557 23,207 7.24 56,702 -15.02 0.0448
2020-02-10 2019-12-31 13F AON COM G0408V102 320,350 60,539 23.30 66,727 32.68 0.0370
2019-11-15 2019-09-30 13F/A-1 AON COM G0408V102 259,811 -58,125 -18.28 50,292 -18.03 0.0315
2019-11-14 2019-09-30 13F AON COM G0408V102 259,811 -58,125 50,292 11,627.5672
2019-08-14 2019-06-30 13F AON COM G0408V102 317,936 -32,512 -9.28 61,356 2.57 0.0376
2019-05-15 2019-03-31 13F AON COM G0408V102 350,448 94,214 36.77 59,819 60.60 0.0412
2019-02-14 2018-12-31 13F AON COM G0408V102 256,234 -28,101 -9.88 37,247 -14.81 0.0288
2018-11-14 2018-09-30 13F AON COM G0408V102 284,335 80,069 39.20 43,724 56.05 0.0303
2018-08-14 2018-06-30 13F AON COM G0408V102 204,266 -223,164 -52.21 28,020 -53.28 0.0241
2018-05-15 2018-03-31 13F AON COM G0408V102 427,430 -30,504 -6.66 59,980 -2.25 0.0458
2018-02-14 2017-12-31 13F AON COM G0408V102 457,934 67,329 17.24 61,363 7.53 0.0501
2017-11-14 2017-09-30 13F AON COM G0408V102 390,605 73,307 23.10 57,066 35.27 0.0588
2017-08-14 2017-06-30 13F AON COM G0408V102 317,298 207,556 189.13 42,186 223.91 0.0452
2017-05-15 2017-03-31 13F AON COM G0408V102 109,742 -69,538 -38.79 13,024 -34.86 0.0142
2017-02-14 2016-12-31 13F AON COM G0408V102 179,280 60,171 50.52 19,995 49.22 0.0216
2016-11-14 2016-09-30 13F AON COM G0408V102 119,109 -32,490 -21.43 13,400 -19.08 0.0149
2016-08-12 2016-06-30 13F AON COM G0408V102 151,599 47,503 45.63 16,560 52.97 0.0215
2016-05-16 2016-03-31 13F AON COM G0408V102 104,096 -97,621 -48.40 10,826 -41.66 0.0165
2016-02-12 2015-12-31 13F AON COM G0408V102 201,717 103,646 105.68 18,557 115.03 0.0225
2015-11-13 2015-09-30 13F AON COM G0408V102 98,071 -67,695 -40.84 8,630 -47.41 0.0104
2015-08-14 2015-06-30 13F AON COM G0408V102 165,766 -13,300 -7.43 16,410 -4.55 0.0184
2015-05-19 2015-03-31 13F/A-1 AON COM G0408V102 179,066 -72,702 -28.88 17,192 -27.36 0.0198
2015-05-14 2015-03-31 13F AON COM G0408V102 179,066 17,192
2015-02-13 2014-12-31 13F AON COM G0408V102 251,768 62,547 33.05 23,666 43.74 0.0228
2014-11-14 2014-09-30 13F AON COM G0408V102 189,221 23,525 14.20 16,464 10.39 0.0158
2014-08-14 2014-06-30 13F AON COM G0408V102 165,696 -248,411 -59.99 14,914 -57.12 0.0158
2014-05-15 2014-03-31 13F AON COM G0408V102 414,107 -163,529 -28.31 34,784 -27.45 0.0394
2014-02-13 2013-12-31 13F AON COM G0408V102 577,636 577,636 86.57 47,944 140.66 0.0491
2013-11-14 2013-09-30 13F AON COM G0408V102 0 -309,606 -100.00 0 -100.00
2013-08-14 2013-06-30 13F AON COM G0408V102 309,606 309,606 19,922 0.0248
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
(%)
2026-02-13 2025-12-31 13F AON OPT Call 0 -100.00 0 -100.00 n/a n/a n/a
2026-03-19 2025-09-30 13F/A AON OPT Call 50,000 17,300 n/a n/a n/a
2026-03-17 2025-03-31 13F/A AON OPT Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-15 2025-03-31 13F AON OPT Call 0 0 n/a n/a n/a
2026-03-19 2024-12-31 13F/A AON OPT Call 50,000 0.00 17,958 3.81 n/a n/a n/a
2025-02-13 2024-12-31 13F AON OPT Call 50,000 18 n/a n/a n/a
2024-11-19 2024-09-30 13F/A AON OPT Call 50,000 17 n/a n/a n/a
2026-03-31 2024-09-30 13F/A AON OPT Call 50,000 17,300 n/a n/a n/a
2024-11-15 2024-09-30 13F AON OPT Call 50,000 17 n/a n/a n/a
2020-08-12 2020-06-30 13F AON OPT Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-13 2020-03-31 13F AON OPT Call 25,700 8,466.67 4,242 6,741.94 n/a n/a n/a
2020-02-10 2019-12-31 13F AON OPT Call 300 200.00 62 226.32 n/a n/a n/a
2019-11-15 2019-09-30 13F/A AON OPT Call 100 0.00 19 0.00 n/a n/a n/a
2019-11-14 2019-09-30 13F AON OPT Call 100 19 n/a n/a n/a
2019-08-14 2019-06-30 13F AON OPT Call 100 -80.00 19 -77.65 n/a n/a n/a
2019-05-15 2019-03-31 13F AON OPT Call 500 -96.91 85 -96.39 n/a n/a n/a
2019-02-14 2018-12-31 13F AON OPT Call 16,200 604.35 2,355 565.25 n/a n/a n/a
2018-11-14 2018-09-30 13F AON OPT Call 2,300 -71.60 354 -68.14 n/a n/a n/a
2018-08-14 2018-06-30 13F AON OPT Call 8,100 575.00 1,111 561.31 n/a n/a n/a
2018-05-15 2018-03-31 13F AON OPT Call 1,200 -67.57 168 -66.13 n/a n/a n/a
2018-02-14 2017-12-31 13F AON OPT Call 3,700 94.74 496 78.42 n/a n/a n/a
2017-11-14 2017-09-30 13F AON OPT Call 1,900 533.33 278 595.00 n/a n/a n/a
2017-08-14 2017-06-30 13F AON OPT Call 300 -25.00 40 -14.89 n/a n/a n/a
2017-05-15 2017-03-31 13F AON OPT Call 400 47 n/a n/a n/a
2017-02-14 2016-12-31 13F AON OPT Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-11-14 2016-09-30 13F AON OPT Call 400 -20.00 45 -18.18 n/a n/a n/a
2016-08-12 2016-06-30 13F AON OPT Call 500 0.00 55 5.77 n/a n/a n/a
2016-05-16 2016-03-31 13F AON OPT Call 500 -16.67 52 -5.45 n/a n/a n/a
2016-02-12 2015-12-31 13F AON OPT Call 600 -85.00 55 -84.37 n/a n/a n/a
2015-11-13 2015-09-30 13F AON OPT Call 4,000 -32.20 352 -39.73 n/a n/a n/a
2015-08-14 2015-06-30 13F AON OPT Call 5,900 -36.56 584 -34.60 n/a n/a n/a
2015-05-19 2015-03-31 13F/A AON OPT Call 9,300 60.34 893 63.85 n/a n/a n/a
2015-05-14 2015-03-31 13F AON OPT Call 9,300 893 n/a n/a n/a
2015-02-13 2014-12-31 13F AON OPT Call 5,800 -71.29 545 -69.00 n/a n/a n/a
2014-11-14 2014-09-30 13F AON OPT Call 20,200 -24.34 1,758 -26.84 n/a n/a n/a
2014-08-14 2014-06-30 13F AON OPT Call 26,700 -18.84 2,403 -13.03 n/a n/a n/a
2014-05-15 2014-03-31 13F AON OPT Call 32,900 -53.73 2,763 -53.18 n/a n/a n/a
2014-02-13 2013-12-31 13F AON OPT Call 71,100 140.20 5,901 209.93 n/a n/a n/a
2013-11-14 2013-09-30 13F AON OPT Call 0 -100.00 0 -100.00 n/a n/a n/a
2013-08-14 2013-06-30 13F AON OPT Call 29,600 1,904 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
(%)
2020-11-12 2020-09-30 13F AON OPT Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-08-12 2020-06-30 13F AON OPT Put 500 -80.00 96 -76.76 n/a n/a n/a
2020-05-13 2020-03-31 13F AON OPT Put 2,500 413 n/a n/a n/a
2020-02-10 2019-12-31 13F AON OPT Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-15 2019-09-30 13F/A AON OPT Put 34,700 -3.07 6,717 -2.76 n/a n/a n/a
2019-11-14 2019-09-30 13F AON OPT Put 34,700 6,717 n/a n/a n/a
2019-08-14 2019-06-30 13F AON OPT Put 35,800 459.38 6,908 532.60 n/a n/a n/a
2019-05-15 2019-03-31 13F AON OPT Put 6,400 4.92 1,092 23.11 n/a n/a n/a
2019-02-14 2018-12-31 13F AON OPT Put 6,100 2,950.00 887 2,761.29 n/a n/a n/a
2018-11-14 2018-09-30 13F AON OPT Put 200 -95.12 31 -94.48 n/a n/a n/a
2018-08-14 2018-06-30 13F AON OPT Put 4,100 -78.19 562 -78.70 n/a n/a n/a
2018-05-15 2018-03-31 13F AON OPT Put 18,800 49.21 2,638 56.28 n/a n/a n/a
2018-02-14 2017-12-31 13F AON OPT Put 12,600 740.00 1,688 670.78 n/a n/a n/a
2017-11-14 2017-09-30 13F AON OPT Put 1,500 200.00 219 231.82 n/a n/a n/a
2017-08-14 2017-06-30 13F AON OPT Put 500 -99.15 66 -99.05 n/a n/a n/a
2017-05-15 2017-03-31 13F AON OPT Put 58,800 3,575.00 6,979 3,820.79 n/a n/a n/a
2017-02-14 2016-12-31 13F AON OPT Put 1,600 128.57 178 125.32 n/a n/a n/a
2016-11-14 2016-09-30 13F AON OPT Put 700 -90.79 79 -90.48 n/a n/a n/a
2016-08-12 2016-06-30 13F AON OPT Put 7,600 2,433.33 830 2,577.42 n/a n/a n/a
2016-05-16 2016-03-31 13F AON OPT Put 300 -86.96 31 -85.38 n/a n/a n/a
2016-02-12 2015-12-31 13F AON OPT Put 2,300 21.05 212 26.95 n/a n/a n/a
2015-11-13 2015-09-30 13F AON OPT Put 1,900 -69.84 167 -73.24 n/a n/a n/a
2015-08-14 2015-06-30 13F AON OPT Put 6,300 -52.27 624 -50.75 n/a n/a n/a
2015-05-19 2015-03-31 13F/A AON OPT Put 13,200 -45.00 1,267 -43.84 n/a n/a n/a
2015-05-14 2015-03-31 13F AON OPT Put 13,200 1,267 n/a n/a n/a
2015-02-13 2014-12-31 13F AON OPT Put 24,000 73.91 2,256 87.84 n/a n/a n/a
2014-11-14 2014-09-30 13F AON OPT Put 13,800 -26.60 1,201 -29.02 n/a n/a n/a
2014-08-14 2014-06-30 13F AON OPT Put 18,800 -65.63 1,692 -63.17 n/a n/a n/a
2014-05-15 2014-03-31 13F AON OPT Put 54,700 -7.60 4,594 -6.51 n/a n/a n/a
2014-02-13 2013-12-31 13F AON OPT Put 59,200 202.04 4,914 289.38 n/a n/a n/a
2013-11-14 2013-09-30 13F AON OPT Put 0 -100.00 0 -100.00 n/a n/a n/a
2013-08-14 2013-06-30 13F AON OPT Put 19,600 1,262 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.