Aon plc
DE ˙ DB ˙ IE00BLP1HW54
272,30 € ↓ -1,70 (-0,62%)
2026-06-03
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionUBS Group AG
Latest Disclosed Ownership903,928 shares
Latest Disclosed Value $ 291,769,880
UBS Group AG ownership in 4VK / Aon plc

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 903,928 shares of Aon plc (DE:4VK) valued at $253,190,233 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 820,117 shares of Aon plc. This represents a change in shares of 10.22% during the quarter. The current value of the position is $246,139,594 USD.

UBS Group AG 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)
2026-05-05 2026-03-31 13F AON SHS CL A G0403H108 903,928 83,811 10.22 291,770 0.82 0.0438
2026-01-29 2025-12-31 13F AON SHS CL A G0403H108 820,117 -375,721 -31.42 289,403 -32.13 0.0469
2025-11-13 2025-09-30 13F AON SHS CL A G0403H108 1,195,838 -24,148 -1.98 426,412 -2.03 0.0668
2025-08-14 2025-06-30 13F AON SHS CL A G0403H108 1,219,986 -85,513 -6.55 435,242 -16.46 0.0753
2025-05-13 2025-03-31 13F AON SHS CL A G0403H108 1,305,499 415,929 46.76 521,012 63.07 0.0958
2025-02-14 2024-12-31 13F AON SHS CL A G0403H108 889,570 327,511 58.27 319,498 64.29 0.0590
2024-11-14 2024-09-30 13F AON SHS CL A G0403H108 562,059 18,782 3.46 194,467 21.93 0.0424
2024-08-14 2024-06-30 13F AON SHS CL A G0403H108 543,277 276,140 103.37 159,495 78.91 0.0394
2024-05-13 2024-03-31 13F AON SHS CL A G0403H108 267,137 -22,248 -7.69 89,149 5.86 0.0222
2024-02-09 2023-12-31 13F AON SHS CL A G0403H108 289,385 84,637 41.34 84,217 26.86 0.0252
2023-11-09 2023-09-30 13F AON SHS CL A G0403H108 204,748 -34,876 -14.55 66,383 -19.75 0.0229
2023-08-11 2023-06-30 13F AON SHS CL A G0403H108 239,624 59,902 33.33 82,718 45.98 0.0279
2023-05-12 2023-03-31 13F AON SHS CL A G0403H108 179,722 -7,242 -3.87 56,665 0.98 0.0207
2023-02-08 2022-12-31 13F AON SHS CL A G0403H108 186,964 53,757 40.36 56,115 57.26 0.0210
2022-11-10 2022-09-30 13F AON SHS CL A G0403H108 133,207 -34,451 -20.55 35,682 -21.08 0.0156
2022-08-10 2022-06-30 13F AON SHS CL A G0403H108 167,658 27,639 19.74 45,213 -0.84 0.0186
2022-05-16 2022-03-31 13F AON SHS CL A G0403H108 140,019 68,034 94.51 45,594 110.73 0.0152
2022-02-14 2021-12-31 13F AON SHS CL A G0403H108 71,985 5,372 8.06 21,636 13.66 0.0062
2021-11-15 2021-09-30 13F AON SHS CL A G0403H108 66,613 -77,699 -53.84 19,035 -44.75 0.0060
2021-08-13 2021-06-30 13F AON SHS CL A G0403H108 144,312 42,711 42.04 34,455 47.38 0.0111
2021-05-12 2021-03-31 13F AON SHS CL A G0403H108 101,601 2,164 2.18 23,379 11.29 0.0078
2021-02-11 2020-12-31 13F AON SHS CL A G0403H108 99,437 34,436 52.98 21,008 56.66 0.0071
2020-11-12 2020-09-30 13F AON SHS CL A G0403H108 65,001 -7,265 -10.05 13,410 -3.66 0.0051
2020-07-31 2020-06-30 13F AON SHS CL A G0403H108 72,266 -7,558 -9.47 13,919 5.65 0.0059
2020-05-01 2020-03-31 13F AON SHS CL A G0408V102 79,824 -265,935 -76.91 13,175 -81.71 0.0062
2020-02-14 2019-12-31 13F AON SHS CL A G0408V102 345,759 45,186 15.03 72,017 23.78 0.0251
2019-11-14 2019-09-30 13F AON SHS CL A G0408V102 300,573 62,365 26.18 58,183 26.57 0.0224
2019-08-14 2019-06-30 13F AON SHS CL A G0408V102 238,208 -48,670 -16.97 45,969 -6.13 0.0177
2019-05-14 2019-03-31 13F AON SHS CL A G0408V102 286,878 122,420 74.44 48,970 104.85 0.0202
2019-02-14 2018-12-31 13F AON SHS CL A G0408V102 164,458 -40,133 -19.62 23,905 -24.02 0.0108
2018-11-14 2018-09-30 13F AON SHS CL A G0408V102 204,591 1,923 0.95 31,462 13.17 0.0125
2018-08-14 2018-06-30 13F AON SHS CL A G0408V102 202,668 -106,591 -34.47 27,800 -35.94 0.0120
2018-05-15 2018-03-31 13F AON SHS CL A G0408V102 309,259 17,214 5.89 43,398 10.90 0.0187
2018-02-14 2017-12-31 13F AON SHS CL A G0408V102 292,045 91,143 45.37 39,134 33.33 0.0161
2017-11-14 2017-09-30 13F AON SHS CL A G0408V102 200,902 13,812 7.38 29,351 18.00 0.0136
2017-11-14 2017-06-30 13F/A-1 AON SHS CL A G0408V102 187,090 55,995 42.71 24,874 59.86 0.0129
2017-08-14 2017-06-30 13F AON SHS CL A G0408V102 187,090 55,995 24,874
2017-11-14 2017-03-31 13F/A-1 AON SHS CL A G0408V102 131,095 13,999 11.96 15,560 19.14 0.0085
2017-05-12 2017-03-31 13F AON SHS CL A G0408V102 131,095 13,999 15,560
2017-02-14 2016-12-31 13F AON SHS CL A G0408V102 117,096 1,209 1.04 13,060 0.18 0.0072
2016-11-14 2016-09-30 13F AON SHS CL A G0408V102 115,887 -10,637 -8.41 13,036 -5.68 0.0078
2016-08-12 2016-06-30 13F AON SHS CL A G0408V102 126,524 -8,367 -6.20 13,821 -1.90 0.0087
2016-05-12 2016-03-31 13F AON SHS CL A G0408V102 134,891 -2,118 -1.55 14,089 11.52 0.0094
2016-02-16 2015-12-31 13F AON SHS CL A G0408V102 137,009 1,235 0.91 12,634 5.01 0.0082
2015-11-13 2015-09-30 13F AON SHS CL A G0408V102 135,774 -17,272 -11.29 12,031 -21.14 0.0085
2015-08-14 2015-06-30 13F AON SHS CL A G0408V102 153,046 -102,274 -40.06 15,256 -37.84 0.0101
2015-05-14 2015-03-31 13F AON SHS CL A G0408V102 255,320 -9,172 -3.47 24,542 -2.15 0.0169
2015-02-17 2014-12-31 13F AON SHS CL A G0408V102 264,492 264,492 25,082 0.0175
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
(%)
2026-01-29 2025-12-31 13F AON SHS CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-13 2025-09-30 13F AON SHS CL A Call 3,600 3,500.00 1,284 3,565.71 n/a n/a n/a
2025-08-14 2025-06-30 13F AON SHS CL A Call 100 36 n/a n/a n/a
2025-05-13 2025-03-31 13F AON SHS CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F AON SHS CL A Call 11,600 24.73 4,166 29.50 n/a n/a n/a
2024-11-14 2024-09-30 13F AON SHS CL A Call 9,300 89.80 3,218 123.71 n/a n/a n/a
2024-08-14 2024-06-30 13F AON SHS CL A Call 4,900 -90.37 1,439 -91.53 n/a n/a n/a
2024-05-13 2024-03-31 13F AON SHS CL A Call 50,900 -49.85 16,986 -42.49 n/a n/a n/a
2024-02-09 2023-12-31 13F AON SHS CL A Call 101,500 3.05 29,539 -7.51 n/a n/a n/a
2023-11-09 2023-09-30 13F AON SHS CL A Call 98,500 10.18 31,936 3.48 n/a n/a n/a
2023-08-11 2023-06-30 13F AON SHS CL A Call 89,400 44.89 30,861 58.64 n/a n/a n/a
2023-05-12 2023-03-31 13F AON SHS CL A Call 61,700 -53.99 19,453 -51.67 n/a n/a n/a
2023-02-08 2022-12-31 13F AON SHS CL A Call 134,100 5.34 40,249 18.03 n/a n/a n/a
2022-11-10 2022-09-30 13F AON SHS CL A Call 127,300 12.06 34,100 11.31 n/a n/a n/a
2022-08-10 2022-06-30 13F AON SHS CL A Call 113,600 6.17 30,636 -12.07 n/a n/a n/a
2022-05-16 2022-03-31 13F AON SHS CL A Call 107,000 16.30 34,842 26.00 n/a n/a n/a
2022-02-14 2021-12-31 13F AON SHS CL A Call 92,000 630.16 27,652 667.90 n/a n/a n/a
2021-11-15 2021-09-30 13F AON SHS CL A Call 12,600 3,601 n/a n/a n/a
2021-05-12 2021-03-31 13F AON SHS CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F AON SHS CL A Call 6,200 1,966.67 1,310 2,012.90 n/a n/a n/a
2020-11-12 2020-09-30 13F AON SHS CL A Call 300 62 n/a n/a n/a
2020-07-31 2020-06-30 13F AON SHS CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-01 2020-03-31 13F AON SHS CL A Call 9,500 331.82 1,568 242.36 n/a n/a n/a
2020-02-14 2019-12-31 13F AON SHS CL A Call 2,200 458 n/a n/a n/a
2019-08-14 2019-06-30 13F AON SHS CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-14 2019-03-31 13F AON SHS CL A Call 1,900 324 n/a n/a n/a
2017-11-14 2017-03-31 13F/A AON SHS CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-02-14 2016-12-31 13F AON SHS CL A Call 8,500 948 n/a n/a n/a
2015-08-14 2015-06-30 13F AON SHS CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-14 2015-03-31 13F AON SHS CL A Call 100 -50.00 10 -47.37 n/a n/a n/a
2015-02-17 2014-12-31 13F AON SHS CL A Call 200 19 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
(%)
2025-05-13 2025-03-31 13F AON SHS CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F AON SHS CL A Put 4,300 0.00 1,544 3.83 n/a n/a n/a
2024-11-14 2024-09-30 13F AON SHS CL A Put 4,300 -12.24 1,488 3.41 n/a n/a n/a
2024-08-14 2024-06-30 13F AON SHS CL A Put 4,900 -91.09 1,439 -92.17 n/a n/a n/a
2024-05-13 2024-03-31 13F AON SHS CL A Put 55,000 -53.70 18,355 -46.91 n/a n/a n/a
2024-02-09 2023-12-31 13F AON SHS CL A Put 118,800 2.59 34,573 -7.91 n/a n/a n/a
2023-11-09 2023-09-30 13F AON SHS CL A Put 115,800 8.53 37,545 1.93 n/a n/a n/a
2023-08-11 2023-06-30 13F AON SHS CL A Put 106,700 42.46 36,833 55.97 n/a n/a n/a
2023-05-12 2023-03-31 13F AON SHS CL A Put 74,900 -49.15 23,615 -46.58 n/a n/a n/a
2023-02-08 2022-12-31 13F AON SHS CL A Put 147,300 7.13 44,211 20.03 n/a n/a n/a
2022-11-10 2022-09-30 13F AON SHS CL A Put 137,500 20.83 36,832 20.01 n/a n/a n/a
2022-08-10 2022-06-30 13F AON SHS CL A Put 113,800 6.16 30,690 -12.08 n/a n/a n/a
2022-05-16 2022-03-31 13F AON SHS CL A Put 107,200 42.93 34,908 54.86 n/a n/a n/a
2022-02-14 2021-12-31 13F AON SHS CL A Put 75,000 1,775.00 22,542 1,872.18 n/a n/a n/a
2021-11-15 2021-09-30 13F AON SHS CL A Put 4,000 1,143 n/a n/a n/a
2021-05-12 2021-03-31 13F AON SHS CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-02-11 2020-12-31 13F AON SHS CL A Put 11,800 2,493 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.