Aon AON Institutional Ownership

NYSE AON

$277.11 +1.21 (+0.44%)

As of: Sep 30, 2026 · 3:59 PM EDT

Institutions by Trading Activity

1,258 Institutions

Increased 605 48.1%

Unchanged 204 16.2%

Reduced 449 35.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

91.22%

▲+3.94 pp QoQ

Shares Held by Institutions

194.49Mn

of 213.20Mn outstanding

▲+5.83% QoQ

Shares Outstanding

213.20Mn

18.71Mn held outside 13F filers

Institutional Investors

1,258

filed 13F for Jun 2026

▲+5 vs prior quarter

Net Shares Added (QoQ)

+10.72Mn

accumulated since last quarter

Value of Holdings

$53.66Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Aon plc (NYSE:AON) showed up in the 13F filings of 1,258 institutional investors as of June 2026.

They owned 91.2% of outstanding stock in June 2026, up from 87.3% the prior quarter.
They increased total shares held in Aon by 5.83% from last quarter, and the number of investors in AON increased 3.28% annually.
Of these 1,258 funds, 605 grew their exposure to Aon, 449 cut back, and 204 maintained positions.
In total, institutional investors held 194.49Mn shares in Aon as of June 2026, up by 10.72Mn shares quarter on quarter, and up 10.57Mn shares year over year.
As of June 30, 2026, BlackRock, Inc. held the largest stake in Aon with 15.72Mn shares, accounting for 7.37% of total shares outstanding.
The largest buyers of Aon for the quarter ending June 2026 were Jpmorgan Chase & Co (6.53Mn), NORGES BANK (2.8Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.64Mn), PRICE T ROWE ASSOCIATES INC /MD/ (1.86Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.82Mn).
The biggest sellers of Aon for the quarter ending June 2026 included UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC (1.24Mn), POLEN CAPITAL MANAGEMENT LLC (1.19Mn), FARALLON CAPITAL MANAGEMENT, L.L.C. (1.13Mn), Sustainable Growth Advisers, LP (809.52K), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (742.7K).
According to Business Quant data, leading holders of AON for June 2026 are BlackRock, Inc. (15.72Mn), VANGUARD CAPITAL MANAGEMENT LLC (13.6Mn), Jpmorgan Chase & Co (12.18Mn), Capital World Investors (11.71Mn), State Street Corp (9.42Mn), DODGE & COX (8.59Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (7.62Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (7.2Mn), Morgan Stanley (6.21Mn), GEODE CAPITAL MANAGEMENT, LLC (5.18Mn).

Form 13F Holdings

1,256 Institutional Holders

Report period 30 Jun, 2026

Total shares held 194.49Mn

Of outstanding 91.22%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	15,716,429	7.37%	▼432,078	-2.68%	$5.21Bn
2	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	13,603,465	6.38%	▲21,709	+0.16%	$4.51Bn
3	Jpmorgan Chase & Co	0000019617	12,175,974	5.71%	▲6,534,543	+115.83%	$3.99Bn
4	Capital World Investors	0001422849	11,711,650	5.49%	▲233,862	+2.04%	$3.88Bn
5	State Street Corp	0000093751	9,416,039	4.42%	▲196,266	+2.13%	$3.12Bn
6	DODGE & COX	0000200217	8,593,144	4.03%	▲477,049	+5.88%	$2.85Bn
7	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	0000912938	7,615,397	3.57%	▼742,700	-8.89%	$2.58Bn
8	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	7,202,991	3.38%	▲2,643,956	+57.99%	$2.39Bn
9	Morgan Stanley	0000895421	6,214,787	2.92%	▼160,158	-2.51%	$2.06Bn
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	5,180,553	2.43%	▼63,756	-1.22%	$1.71Bn
11	Bank of New York Mellon Corp	0001390777	3,191,212	1.50%	▼129,880	-3.91%	$1.06Bn
12	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	3,136,640	1.47%	▲1,855,714	+144.87%	$1.04Mn
13	NORGES BANK	0001374170	2,796,760	1.31%	▲2,796,760	0.00%	$927.66Mn
14	Mitsubishi UFJ Asset Management Co., Ltd.	0001466546	2,753,913	1.29%	▲237,276	+9.43%	$913.45Mn
15	Independent Franchise Partners LLP	0001483866	2,646,943	1.24%	▲58,941	+2.28%	$877.96Mn
16	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	2,614,754	1.23%	▲1,817,336	+227.90%	$867.29Mn
17	DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	0001694217	2,255,768	1.06%	▼692,642	-23.49%	$748.22Mn
18	Boston Partners	0001386060	2,089,773	0.98%	▲134,741	+6.89%	$695.75Mn
19	Northern Trust Corp	0000073124	2,040,534	0.96%	▼41,571	-2.00%	$676.82Mn
20	AQR CAPITAL MANAGEMENT LLC	0001167557	1,905,800	0.89%	▲926,045	+94.52%	$623.01Mn

Showing 1 to 20 of 1,256 holders