MASSACHUSETTS FINANCIAL SERVICES CO /MA/

Position in AON — Aon plc

CIK 912938 Boston, MA

Back to AON Full portfolio

Position in AON

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$2,697,826,545

-$317,545,753 QoQ

Shares Held

8,358,097

-2.2% QoQ

Ownership

3.91%

of shares outstanding

% of Portfolio

0.98%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2020

24 quarters on record

Voting authority Sole 68.0497725738287.ToString("F0")% Shared 26.989480978744325.ToString("F0")% None 4.960746447426969.ToString("F0")%

Common Shares in AON Over Time

Shares Held

Position Value (USD)

Position in Insurance Brokers

Financial Services · as of Mar 31, 2026

MASSACHUSETTS FINANCIAL SERVICES CO /MA/ holds $5,950,903,250 across 5 Insurance Brokers names. AON ranks #1 (45.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AON	Aon plc This page	8,358,097	$2,697,826,545
2	WTW	Willis Towers Watson PLC	5,867,533	$1,705,691,840
3	MRSH	Marsh & Mclennan Companies, Inc.	8,200,309	$1,422,343,593
4	BRO	Brown & Brown, Inc.	1,537,185	$100,239,832
5	AJG	Arthur J. Gallagher & Co.	114,514	$24,801,440

All Filings in AON

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24 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$2,697,826,545	8,358,097	-2.2%	Shares	Defined	2026-05-14
2025-12-31	$3,015,372,298	8,545,036	-2.4%	Shares	Sole	2026-01-22
2025-09-30	$3,122,815,670	8,757,686	-2.2%	Shares	Sole	2025-10-29
2025-06-30	$3,193,719,439	8,952,011	-9.0%	Shares	Sole	2025-08-08
2025-03-31	$3,923,983,377	9,832,327	-15.4%	Shares	Sole	2025-05-02
2024-12-31	$4,172,118,923	11,616,324	-4.5%	Shares	Sole	2025-02-12
2024-09-30	$4,208,781,166	12,164,459	-3.1%	Shares	Sole	2024-11-12
2024-06-30	$3,685,183,202	12,552,569	+2.5%	Shares	Sole	2024-08-09
2024-03-31	$4,085,689,571	12,242,867	-1.8%	Shares	Sole	2024-05-14
2023-12-31	$3,629,700,963	12,472,342	-8.4%	Shares	Sole	2024-02-08
2023-09-30	$4,413,011,588	13,611,164	-10.5%	Shares	Sole	2023-11-08
2023-06-30	$5,250,188,567	15,209,121	-2.0%	Shares	Sole	2023-08-09
2023-03-31	$4,895,457,694	15,526,841	-1.1%	Shares	Sole	2023-05-10
2022-12-31	$4,711,098,284	15,696,336	-4.1%	Shares	Sole	2023-02-13
2022-09-30	$4,383,210,111	16,363,199	-0.4%	Shares	Sole	2022-11-09
2022-06-30	$4,429,304,680	16,424,298	-8.8%	Shares	Sole	2022-08-09
2022-03-31	$5,864,199,027	18,008,780	-0.4%	Shares	Sole	2022-05-11
2021-12-31	$5,434,405,519	18,080,934	-3.3%	Shares	Sole	2022-02-10
2021-09-30	$5,341,914,894	18,693,057	-4.0%	Shares	Sole	2021-11-10
2021-06-30	$4,649,699,621	19,474,366	-1.0%	Shares	Sole	2021-08-13
2021-03-31	$4,525,497,430	19,666,670	-2.6%	Shares	Sole	2021-05-13
2020-12-31	$4,267,119,060	20,197,468	-2.7%	Shares	Defined	2021-05-12
2020-09-30	$4,282,121,029	20,756,767	-4.0%	Shares	Sole	2020-11-12
2020-06-30	$4,165,211,509	21,626,228	—	Shares	Sole	2020-11-20
No filing history on record for this holder in this stock.