Aon plc
DE ˙ DB ˙ IE00BLP1HW54
276,10 € ↑5,50 (2,03%)
2026-06-05
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionHsbc Holdings Plc
Latest Disclosed Ownership354,158 shares
Latest Disclosed Value $ 114,404,902
Hsbc Holdings Plc ownership in 4VK / Aon plc

On April 30, 2026 - Hsbc Holdings Plc filed a 13F-HR form disclosing ownership of 354,158 shares of Aon plc (DE:4VK) valued at $99,199,656 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 20, 2026 disclosing 190,679 shares of Aon plc. This represents a change in shares of 85.74% during the quarter. The current value of the position is $97,783,024 USD.

Hsbc Holdings 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)
2026-04-30 2026-03-31 13F AON SHS CL A G0403H108 354,158 163,479 85.74 114,405 68.99 0.0597
2026-03-20 2025-12-31 13F/A-1 AON SHS CL A G0403H108 190,679 5,890 3.19 67,700 3.12 0.0345
2026-03-06 2025-12-31 13F AON SHS CL A G0403H108 190,679 5,890 67,700 0.0385
2025-11-13 2025-09-30 13F AON SHS CL A G0403H108 184,789 16,030 9.50 65,649 9.24 0.0362
2025-08-13 2025-06-30 13F AON SHS CL A G0403H108 168,759 16,367 10.74 60,096 -0.36 0.0361
2025-05-14 2025-03-31 13F AON SHS CL A G0403H108 152,392 48,309 46.41 60,310 61.99 0.0373
2025-02-14 2024-12-31 13F AON SHS CL A G0403H108 104,083 56,314 117.89 37,231 125.89 0.0217
2024-11-14 2024-09-30 13F AON SHS CL A G0403H108 47,769 33,134 226.40 16,483 284.02 0.0096
2024-08-12 2024-06-30 13F AON SHS CL A G0403H108 14,635 -100,590 -87.30 4,292 -88.84 0.0026
2024-05-15 2024-03-31 13F AON SHS CL A G0403H108 115,225 -180,015 -60.97 38,453 -54.98 0.0260
2024-02-12 2023-12-31 13F AON SHS CL A G0403H108 295,240 159,944 118.22 85,414 93.77 0.0745
2023-11-13 2023-09-30 13F AON SHS CL A G0403H108 135,296 46,241 51.92 44,079 42.80 0.0459
2023-08-11 2023-06-30 13F AON SHS CL A G0403H108 89,055 43,246 94.41 30,868 115.06 0.0314
2023-05-15 2023-03-31 13F AON SHS CL A G0403H108 45,809 -54,635 -54.39 14,354 -52.13 0.0172
2023-02-14 2022-12-31 13F AON SHS CL A G0403H108 100,444 86,718 631.78 29,987 706.29 0.0345
2022-11-14 2022-09-30 13F AON SHS CL A G0403H108 13,726 -102 -0.74 3,719 -0.08 0.0061
2022-08-11 2022-06-30 13F AON SHS CL A G0403H108 13,828 13,828 3,722 0.0052
2022-05-16 2022-03-31 13F AON SHS CL A G0403H108 0 -3,310 -100.00 0 -100.00
2022-02-11 2021-12-31 13F AON SHS CL A G0403H108 3,310 -8,334 -71.57 1,000 -70.08 0.0009
2021-11-12 2021-09-30 13F AON SHS CL A G0403H108 11,644 3,203 37.95 3,342 66.19 0.0034
2021-08-13 2021-06-30 13F AON SHS CL A G0403H108 8,441 -25,055 -74.80 2,011 -73.98 0.0021
2021-05-14 2021-03-31 13F AON SHS CL A G0403H108 33,496 18,490 123.22 7,728 146.27 0.0091
2021-02-25 2020-12-31 13F/A-1 AON SHS CL A G0403H108 15,006 13,090 683.19 3,138 688.44 0.0042
2021-02-12 2020-12-31 13F AON SHS CL A G0403H108 15,006 13,090 3,138 745.0765
2020-11-12 2020-09-30 13F AON SHS CL A G0403H108 1,916 1,916 398 0.0006
2020-08-14 2020-06-30 13F AON SHS CL A G0408V102 0 -8,011 -100.00 0 -100.00
2020-05-15 2020-03-31 13F AON SHS CL A G0408V102 8,011 -24,794 -75.58 1,341 -80.32 0.0031
2020-02-14 2019-12-31 13F AON SHS CL A G0408V102 32,805 28,738 706.61 6,814 765.82 0.0118
2019-11-14 2019-09-30 13F AON SHS CL A G0408V102 4,067 -15,952 -79.68 787 -79.63 0.0015
2019-08-13 2019-06-30 13F AON SHS CL A G0408V102 20,019 2,497 14.25 3,863 29.15 0.0073
2019-05-15 2019-03-31 13F AON SHS CL A G0408V102 17,522 -14,548 -45.36 2,991 -35.84 0.0055
2019-02-13 2018-12-31 13F AON SHS CL A G0408V102 32,070 -2,029 -5.95 4,662 -11.10 0.0086
2018-11-13 2018-09-30 13F AON SHS CL A G0408V102 34,099 -26,048 -43.31 5,244 -36.44 0.0084
2018-08-10 2018-06-30 13F AON SHS CL A G0408V102 60,147 -16,550 -21.58 8,250 -23.35 0.0147
2018-05-11 2018-03-31 13F AON SHS CL A G0408V102 76,697 -48,801 -38.89 10,763 -36.00 0.0160
2018-02-14 2017-12-31 13F AON SHS CL A G0408V102 125,498 -25,883 -17.10 16,817 -23.96 0.0243
2017-11-14 2017-09-30 13F AON SHS CL A G0408V102 151,381 51,070 50.91 22,117 65.84 0.0354
2017-08-14 2017-06-30 13F AON SHS CL A G0408V102 100,311 27,413 37.60 13,336 54.14 0.0245
2017-05-15 2017-03-31 13F AON SHS CL A G0408V102 72,898 10,288 16.43 8,652 23.90 0.0181
2017-02-09 2016-12-31 13F AON SHS CL A G0408V102 62,610 62,610 0.00 6,983 0.0163
2016-05-13 2016-03-31 13F AON SHS CL A G0408V102 0 -20,882 -100.00 0 -100.00
2016-02-12 2015-12-31 13F AON SHS CL A G0408V102 20,882 -12,379 -37.22 1,926 -34.65 0.0046
2015-11-12 2015-09-30 13F AON SHS CL A G0408V102 33,261 -56,945 -63.13 2,947 -67.23 0.0074
2015-08-13 2015-06-30 13F AON SHS CL A G0408V102 90,206 -26,272 -22.56 8,992 -19.69 0.0184
2015-05-14 2015-03-31 13F AON SHS CL A G0408V102 116,478 11,062 10.49 11,196 11.99 0.0215
2015-02-13 2014-12-31 13F AON SHS CL A G0408V102 105,416 25,139 31.32 9,997 42.04 0.0207
2014-11-18 2014-09-30 13F AON SHS CL A G0408V102 80,277 13,904 20.95 7,038 17.69 0.0147
2014-08-14 2014-06-30 13F AON SHS CL A G0408V102 66,373 -9,296 -12.29 5,980 -6.23 0.0129
2014-05-14 2014-03-31 13F AON SHS CL A G0408V102 75,669 21,157 38.81 6,377 39.45 0.0152
2014-02-14 2013-12-31 13F AON SHS CL A G0408V102 54,512 -25,101 -31.53 4,573 -22.83 0.0119
2013-11-14 2013-09-30 13F AON SHS CL A G0408V102 79,613 6,348 8.66 5,926 25.68 0.0162
2013-10-10 2013-06-30 13F/A-1 AON SHS CL A G0408V102 73,265 32,392 79.25 4,715 87.55 0.0143
2013-08-14 2013-06-30 13F AON SHS CL A G0408V102 73,265 4,715
2013-10-10 2013-03-31 13F/A-1 AON SHS CL A G0408V102 40,873 36,434 820.77 2,514 917.81 0.0092
2013-05-22 2013-03-31 13F AON SHS CL A G0408V102 40,953 2,519
2013-06-17 2012-12-31 13F/A-1 AON SHS CL A G0408V102 4,439 4,439 247 0.0010
2013-10-10 2012-12-31 13F/A-2 AON SHS CL A G0408V102 4,439 4,439 0.00 247 0.00 0.0010
2013-10-11 2012-06-30 13F/A-1 AON COM 037389103 0 -68,443 -100.00 0 -100.00
2013-10-11 2012-03-31 13F/A-1 AON COM 037389103 68,443 68,443 3,358 0.0147
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
(%)
2026-04-30 2026-03-31 13F AON SHS CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2026-04-30 2026-03-31 13F AON SHS CL A Call 0 0 n/a n/a n/a
2026-03-20 2025-12-31 13F/A AON SHS CL A Call 2,500 -59.02 888 -59.07 n/a n/a n/a
2025-11-13 2025-09-30 13F AON SHS CL A Call 6,100 0.00 2,167 -0.23 n/a n/a n/a
2025-08-13 2025-06-30 13F AON SHS CL A Call 6,100 0.00 2,172 -10.02 n/a n/a n/a
2025-05-14 2025-03-31 13F AON SHS CL A Call 6,100 2,414 n/a n/a n/a
2024-05-15 2024-03-31 13F AON SHS CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-12 2023-12-31 13F AON SHS CL A Call 6,900 27.78 1,996 13.47 n/a n/a n/a
2023-11-13 2023-09-30 13F AON SHS CL A Call 5,400 25.58 1,759 18.05 n/a n/a n/a
2023-08-11 2023-06-30 13F AON SHS CL A Call 4,300 -35.82 1,490 -29.01 n/a n/a n/a
2023-05-15 2023-03-31 13F AON SHS CL A Call 6,700 -58.90 2,099 -56.86 n/a n/a n/a
2023-02-14 2022-12-31 13F AON SHS CL A Call 16,300 0.00 4,866 10.17 n/a n/a n/a
2022-11-14 2022-09-30 13F AON SHS CL A Call 16,300 89.53 4,417 90.80 n/a n/a n/a
2022-08-11 2022-06-30 13F AON SHS CL A Call 8,600 2,315 n/a n/a n/a
2020-05-15 2020-03-31 13F AON SHS CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-14 2019-12-31 13F AON SHS CL A Call 18,700 0.00 3,884 7.29 n/a n/a n/a
2019-11-14 2019-09-30 13F AON SHS CL A Call 18,700 0.00 3,620 0.30 n/a n/a n/a
2019-08-13 2019-06-30 13F AON SHS CL A Call 18,700 3,609 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
(%)
2026-04-30 2026-03-31 13F AON SHS CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-04-30 2026-03-31 13F AON SHS CL A Put 0 0 n/a n/a n/a
2026-03-20 2025-12-31 13F/A AON SHS CL A Put 8,500 -50.29 3,018 -50.33 n/a n/a n/a
2025-11-13 2025-09-30 13F AON SHS CL A Put 17,100 0.00 6,075 -0.25 n/a n/a n/a
2025-08-13 2025-06-30 13F AON SHS CL A Put 17,100 0.00 6,089 -10.02 n/a n/a n/a
2025-05-14 2025-03-31 13F AON SHS CL A Put 17,100 6,767 n/a n/a n/a
2024-05-15 2024-03-31 13F AON SHS CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-12 2023-12-31 13F AON SHS CL A Put 29,100 1.39 8,419 -9.97 n/a n/a n/a
2023-11-13 2023-09-30 13F AON SHS CL A Put 28,700 1.41 9,350 -4.68 n/a n/a n/a
2023-08-11 2023-06-30 13F AON SHS CL A Put 28,300 -7.52 9,809 2.30 n/a n/a n/a
2023-05-15 2023-03-31 13F AON SHS CL A Put 30,600 -18.83 9,588 -14.80 n/a n/a n/a
2023-02-14 2022-12-31 13F AON SHS CL A Put 37,700 107.14 11,255 128.23 n/a n/a n/a
2022-11-14 2022-09-30 13F AON SHS CL A Put 18,200 65.45 4,931 66.53 n/a n/a n/a
2022-08-11 2022-06-30 13F AON SHS CL A Put 11,000 2,961 n/a n/a n/a
2020-05-15 2020-03-31 13F AON SHS CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-14 2019-12-31 13F AON SHS CL A Put 18,800 0.00 3,905 7.31 n/a n/a n/a
2019-11-14 2019-09-30 13F AON SHS CL A Put 18,800 0.00 3,639 0.30 n/a n/a n/a
2019-08-13 2019-06-30 13F AON SHS CL A Put 18,800 3,628 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.