Aon plc
DE ˙ DB ˙ IE00BLP1HW54
272,30 € ↓ -1,70 (-0,62%)
2026-06-03
DEL PRIS
SecurityDE:4VK / Aon plc
InstitutionTcw Group Inc
Latest Disclosed Ownership5,384 shares
Latest Disclosed Value $ 1,737,848
Tcw Group Inc reports 32.35% increase in ownership of 4VK / Aon plc

On May 14, 2026 - Tcw Group Inc filed a 13F-HR form disclosing ownership of 5,384 shares of Aon plc (DE:4VK) valued at $1,508,058 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 4,068 shares of Aon plc. This represents a change in shares of 32.35% during the quarter. The current value of the position is $1,466,063 USD.

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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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)
2026-05-14 2026-03-31 13F AON SHS CL A G0403H108 5,384 1,316 32.35 1,738 21.05 0.0070
2026-02-17 2025-12-31 13F AON SHS CL A G0403H108 4,068 4,068 1,436 0.0103
2017-05-11 2017-03-31 13F AON SHS CL A G0408V102 0 -19,400 -100.00 0 -100.00
2017-02-10 2016-12-31 13F AON SHS CL A G0408V102 19,400 -250 -1.27 2,164 -2.08 0.0163
2016-11-14 2016-09-30 13F AON SHS CL A G0408V102 19,650 200 1.03 2,210 4.00 0.0168
2016-08-12 2016-06-30 13F/A-1 AON SHS CL A G0408V102 19,450 550 2.91 2,125 7.65 0.0161
2016-08-11 2016-06-30 13F AON SHS CL A G0408V102 19,450 2,125
2016-05-16 2016-03-31 13F AON SHS CL A G0408V102 18,900 -50 -0.26 1,974 12.99 0.0145
2016-02-16 2015-12-31 13F AON SHS CL A G0408V102 18,950 -200 -1.04 1,747 2.95 0.0125
2015-11-13 2015-09-30 13F AON SHS CL A G0408V102 19,150 0 0.00 1,697 -11.11 0.0122
2015-08-12 2015-06-30 13F AON SHS CL A G0408V102 19,150 -59,800 -75.74 1,909 -74.85 0.0123
2015-05-13 2015-03-31 13F AON SHS CL A G0408V102 78,950 -1,018 -1.27 7,589 0.08 0.0364
2015-02-13 2014-12-31 13F AON SHS CL A G0408V102 79,968 -62,282 -43.78 7,583 -39.19 0.0317
2014-11-14 2014-09-30 13F AON SHS CL A G0408V102 142,250 -6,250 -4.21 12,471 -6.78 0.0502
2014-08-14 2014-06-30 13F AON SHS CL A G0408V102 148,500 -1,150 -0.77 13,378 6.07 0.0551
2014-05-13 2014-03-31 13F AON SHS CL A G0408V102 149,650 800 0.54 12,613 1.02 0.0524
2014-02-18 2013-12-31 13F/A-1 AON SHS CL A G0408V102 148,850 -3,000 -1.98 12,486 10.46 0.0526
2014-02-14 2013-12-31 13F AON SHS CL A G0408V102 12,486 148,850
2013-11-14 2013-09-30 13F AON SHS CL A G0408V102 151,850 250 0.16 11,304 15.88 0.0522
2013-08-14 2013-06-30 13F/A-1 AON SHS CL A G0408V102 151,600 151,600 9,755 0.0481
2013-08-14 2013-06-30 13F AON SHS CL A G0408V102 151,600 9,755
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.