Aon plc (AON) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

5,540,003Shares held by institutions

$1,795,542,672Value of institutional holdings

88.14%Institutional ownership %

1.31%Shares Changed QoQ

1,208No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Aon plc (NYSE:AON) showed up in the 13F filings of 1,239 institutional investors as of December 2025.

Their combined ownership stood at 86.4% of outstanding shares in December 2025, down from 89.7% in September 2025.
Their total shares held in AON decreased -2.05% quarter over quarter, and separately, investors owning Aon increased 7.09% from a year ago.
During the quarter, 555 of these 1,239 funds increased positions in AON, 470 reduced exposure, and 214 held steady.
Altogether, these fund groups held 187.5Mn shares in AON by December 2025, down by 3.93Mn shares quarter on quarter, and down 21.65Mn shares year over year.
VANGUARD GROUP INC is the top holder of Aon as of December 31, 2025, with 20.17Mn shares representing 9.29% of outstanding stock.
Top purchasers of AON stock for the quarter ending December 2025 included DODGE & COX (4.39Mn), NORGES BANK (3.28Mn), DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main (2.39Mn), FMR LLC (757.82K), Southpoint Capital Advisors LP (650.0K).
Top sellers of AON stock for the quarter ending December 2025 included Jpmorgan Chase & Co (3.5Mn), FARALLON CAPITAL MANAGEMENT LLC (1.89Mn), Bank Of America Corp /De/ (1.51Mn), CANTILLON CAPITAL MANAGEMENT LLC (1.22Mn), Mawer Investment Management Ltd. (1.02Mn).
Per Business Quant data, the top 10 holders of Aon for the quarter ending December 2025 are VANGUARD GROUP INC (20.17Mn), BlackRock, Inc. (16.24Mn), Capital World Investors (12.25Mn), State Street Corp (9.2Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (8.55Mn), DODGE & COX (7.85Mn), Morgan Stanley (5.57Mn), GEODE CAPITAL MANAGEMENT, LLC (5.14Mn), Berkshire Hathaway Inc (3.6Mn), Bank of New York Mellon Corp (3.48Mn).

1,243 Institutional Holders

5,540,003 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	390,348	2.46%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	191,658	0.96%	$0.00
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	31 Dec, 2025	2,388,314	8,947.68%	$0.00
Barclays Plc	31 Dec, 2025	-796,731	-57.51%	$0.00
Capital World Investors	31 Dec, 2025	176,207	1.46%	$0.00
UBS Group AG	31 Dec, 2025	-375,721	-31.42%	$0.00
HSBC HOLDINGS PLC	31 Dec, 2025	196,569	106.37%	$0.00
State Street Corp	31 Dec, 2025	-25,491	-0.28%	$0.00
Nuveen, LLC	31 Dec, 2025	-240,461	-22.93%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	11,373	119.38%	$0.00
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	31 Dec, 2025	-212,650	-2.43%	$0.00
National Pension Service	31 Dec, 2025	52,077	12.39%	$0.00
World Investment Advisors	31 Dec, 2025	3,179	94.92%	$0.00
DODGE & COX	31 Dec, 2025	4,387,773	126.64%	$0.00
C WorldWide Group Holding A/S	31 Dec, 2025	-85,128	-16.46%	$0.00
STANCE CAPITAL LLC	31 Dec, 2025	402	11.13%	$0.00
Morgan Stanley	31 Dec, 2025	-565,880	-9.22%	$0.00
Bowie Capital Management, LLC	31 Dec, 2025	-12,738	-3.57%	$0.00
PEAK6 LLC	31 Dec, 2025	2,206	110,300.00%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	28,066	0.55%	$0.00

1 - 20 of 1,243

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