BROWN BROTHERS HARRIMAN & CO

Position in AON — Aon plc

CIK 14661 NEW YORK, NY

Position in AON

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$2,445,550

+$322,626 QoQ

Shares Held

7,373

+12.1% QoQ

Ownership

0.003%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#438

of 1,252 holders

Holding Since

Jun 2020

25 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Financial Services · as of Jun 30, 2026

BROWN BROTHERS HARRIMAN & CO holds $286,696,877 across 8 Insurance Brokers names. AON ranks #4 (0.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AJG	Arthur J. Gallagher & Co.	1,000,945	$229,786,943
2	BRO	Brown & Brown, Inc.	484,058	$31,052,320
3	MRSH	Marsh & Mclennan Companies, Inc.	125,714	$20,952,752
4	AON	Aon plc This page	7,373	$2,445,550
5	BWIN	Baldwin Insurance Group, Inc.	80,665	$2,144,075
6	WTW	Willis Towers Watson PLC	998	$260,847
7	ERIE	Erie Indemnity Co	212	$50,827
8	CRVL	Corvel Corp	57	$3,563

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$2,445,550	7,373	+12.1%	Shares	Sole	2026-08-12
2026-03-31	$2,122,924	6,577	+16.8%	Shares	Sole	2026-05-14
2025-12-31	$1,986,714	5,630	+21.9%	Shares	Sole	2026-02-12
2025-09-30	$1,646,329	4,617	+11.7%	Shares	Sole	2025-11-13
2025-06-30	$1,474,489	4,133	+4.2%	Shares	Sole	2025-08-11
2025-03-31	$1,583,190	3,967	-1.2%	Shares	Sole	2025-05-14
2024-12-31	$1,442,386	4,016	-73.5%	Shares	Sole	2025-02-12
2024-09-30	$5,242,094	15,151	-28.7%	Shares	Sole	2024-11-13
2024-06-30	$6,234,171	21,235	+407.0%	Shares	Sole	2024-08-09
2024-03-31	$1,397,619	4,188	+15.1%	Shares	Sole	2024-05-10
2023-12-31	$1,058,439	3,637	-0.8%	Shares	Sole	2024-02-12
2023-09-30	$1,189,238	3,668	+13.1%	Shares	Sole	2023-11-13
2023-06-30	$1,119,483	3,243	-3.9%	Shares	Sole	2023-08-07
2023-03-31	$1,064,419	3,376	-0.4%	Shares	Sole	2023-05-11
2022-12-31	$1,017,174	3,389	-6.7%	Shares	Sole	2023-02-09
2022-09-30	$972,635	3,631	-2.6%	Shares	Sole	2022-11-14
2022-06-30	$1,005,636	3,729	-17.9%	Shares	Sole	2022-08-11
2022-03-31	$1,479,662	4,544	+5.2%	Shares	Sole	2022-05-13
2021-12-31	$1,297,818	4,318	-21.1%	Shares	Sole	2022-02-14
2021-09-30	$1,564,019	5,473	+0.9%	Shares	Sole	2021-11-15
2021-06-30	$1,294,795	5,423	+0.2%	Shares	Sole	2021-08-13
2021-03-31	$1,245,815	5,414	-17.1%	Shares	Sole	2021-05-13
2020-12-31	$1,380,438	6,534	+5.3%	Shares	Sole	2021-02-16
2020-09-30	$1,279,885	6,204	-1.5%	Shares	Sole	2020-11-16
2020-06-30	$1,212,802	6,297	—	Shares	Sole	2020-08-13
No filing history on record for this holder in this stock.