Who owns AONWhat AON owns — n/a

Who owns Aon plc?

Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from SEC filings.

Institutional ownership of AON from SEC Form 13F filings across 1,603 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.

As of the 2026-06-30 reporting period, 1,603 institutions disclosed 495.4M shares of Aon plc worth $63.96B; the largest disclosed holder is VANGUARD GROUP INC. Source: SEC Form 13F filings, parsed by EvidInvest.

1,603

13F holders

$63.96B

value, 2026 filers

495.4M

shares disclosed

new positions (2026 filers)

Top institutional holders

ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of AON's shares outstanding

#	Manager	Shares	Value	% of fund	% of co.	Δ shares QoQ
1	VANGUARD GROUP INC	20.2M	$7.12B	0.1%	—	—
2	BlackRock, Inc.	16.1M	$5.21B	0.1%	—	—
3	BlackRock Inc.	15.3M	$4.48B	0.1%	—	—
4	VANGUARD CAPITAL MANAGEMENT LLC	13.6M	$4.38B	0.1%	—	—
5	Capital World Investors	11.5M	$3.70B	0.5%	—	—
6	STATE STREET CORP	9.2M	$2.98B	0.1%	—	—
7	DODGE & COX	8.1M	$2.62B	1.4%	—	—
8	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	7.6M	$2.58B	0.8%	—	—
9	MORGAN STANLEY	6.4M	$2.06B	0.1%	—	—
10	JPMORGAN CHASE & CO	5.6M	$1.83B	0.1%	—	—
11	GEODE CAPITAL MANAGEMENT, LLC	5.2M	$1.69B	0.1%	—	—
12	HPS Investment Partners, LLC	4.2M	$1.51B	99.5%	—	—
13	NORGES BANK	3.3M	$1.16B	0.1%	—	—
14	Bank of New York Mellon Corp	3.3M	$1.07B	0.2%	—	—
15	DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	2.9M	$951.7M	0.8%	—	—
16	BlackRock Institutional Trust Company, N.A.	7.9M	$879.5M	0.1%	—	—
17	Independent Franchise Partners LLP	2.6M	$835.4M	5.8%	—	—
18	Mitsubishi UFJ Kokusai Asset Management Co., Ltd.	2.5M	$812.3M	0.5%	—	—
19	FARALLON CAPITAL MANAGEMENT LLC	2.5M	$811.0M	4.6%	—	—
20	Boston Partners	2.1M	$695.8M	0.6%	—	—
21	NORTHERN TRUST CORP	2.1M	$672.1M	0.1%	—	—
22	Metatron Capital SICAV plc	220.3M	$661.2M	0.6%	—	—
23	WCM INVESTMENT MANAGEMENT, LLC	2.0M	$632.7M	1.4%	—	—
24	Neuberger Berman Group LLC	1.9M	$599.7M	0.5%	—	—
25	Artisan Partners Limited Partnership	1.6M	$530.7M	0.9%	—	—

Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.