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AON in the 13F filings

Aon PLC · CUSIP G0403H108

Sector · InsuranceTheme · Financial services· L3VLUP-defined
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 31 Jul 2026
Managers listing it
39
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 23 listed it in both
Shares listed
46,210,413
combined, among listed positions
Reported value
$15.4bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 20 buyers (opened or added shares) and 22 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,080,819.

Managers listing AON in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

39 of 39 holders

ActionFiling
Capital World Investors11,711,650$3.9bn0.46%Added+233,86212 Aug 2026 (the filing on sec.gov)
Dodge & Cox8,593,144$2.9bn1.49%Added+477,04913 Aug 2026 (the filing on sec.gov)
MFS Investment Management7,615,397$2.6bn0.82%Trimmed-742,7003 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc3,136,640$1.0bn0.10%Added+1,855,71414 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP2,614,754$867m0.38%Added+1,817,33613 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC1,905,800$623m0.22%Added+926,04514 Aug 2026 (the filing on sec.gov)
Artisan Partners LP1,850,623$614m0.97%Added+206,47113 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC1,691,729$561m0.37%Trimmed-166,10527 Oct 2026 (the filing on sec.gov)
Farallon Capital Management LLC1,382,562$459m2.12%Trimmed-1,130,07614 Aug 2026 (the filing on sec.gov)
Viking Global Investors LP1,151,269$382m1.09%Added+64,15514 Aug 2026 (the filing on sec.gov)
Invesco Ltd1,069,331$355munder 0.1%Trimmed-417,29214 Aug 2026 (the filing on sec.gov)
Baupost Group LLC687,000$228m4.21%Trimmed-82,00013 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)551,367$183munder 0.1%Added+28,18313 Aug 2026 (the filing on sec.gov)
Verition Fund Management LLC385,028$128m0.65%Added+156,81914 Aug 2026 (the filing on sec.gov)
Millennium Management LLC312,198$104munder 0.1%Added+292,22214 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP207,271$67munder 0.1%Trimmed-13,05214 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC198,061$66m0.08%Trimmed-26,26014 Aug 2026 (the filing on sec.gov)
Polen Capital Management LLC164,035$54m0.47%Trimmed-1,190,0184 Aug 2026 (the filing on sec.gov)
Woodline Partners LP155,078$51m0.16%Added+52,70914 Aug 2026 (the filing on sec.gov)
Markel Group Inc135,800$45m0.34%Held031 Jul 2026 (the filing on sec.gov)
Man Group PLC110,868$37m0.06%Trimmed-28,38414 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP106,370$35munder 0.1%Added+14,99614 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC105,569$35munder 0.1%Added+25,2692 Sep 2026 (the filing on sec.gov)
Voloridge Investment Management LLC82,214$27m0.12%Trimmed-32,76014 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp47,785$16munder 0.1%Trimmed-13,21514 Aug 2026 (the filing on sec.gov)
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Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (5)

Exited (4)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
25 in Q3 2024 to 24 in Q2 2026

Tracked managers listing it, at least.

0102030402020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
AON by quarter
QuarterHoldersReported valueBuyersSellers
Q1 20201$1.0bnn.a.n.a.
Q2 202027$10.4bnn.a.n.a.
Q3 202026$10.9bnn.a.n.a.
Q4 202030$10.7bnn.a.n.a.
Q1 202132$12.0bnn.a.n.a.
Q2 202134$13.2bnn.a.n.a.
Q3 202127$13.3bnn.a.n.a.
Q4 202131$14.0bnn.a.n.a.
Q1 202223$15.7bnn.a.n.a.
Q2 202232$12.5bnn.a.n.a.
Q3 202224$11.7bnn.a.n.a.
Q4 202227$12.4bnn.a.n.a.
Q1 202323$12.4bnn.a.n.a.
Q2 202317$13.8bnn.a.n.a.
Q3 202321$12.3bnn.a.n.a.
Q4 202324$10.0bn159
Q1 202423$11.2bn914
Q2 202421$11.0bn137
Q3 202425$13.5bn158
Q4 202424$14.1bn1311
Q1 202524$15.9bn169
Q2 202524$15.0bn178
Q3 202530$16.0bn1712
Q4 202525$16.1bn1725
Q1 202623$14.0bn2619
Q2 202624$15.0bn2022

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

AON and V →AON and AXP →AON and BAC →Choose a stock to compare with AON →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own AON, latest filings →Back to the 13F Explorer →