Robeco Institutional Asset Management B.V.

Position in AON — Aon plc

CIK 1418773 ROTTERDAM, P7

Position in AON

as of Mar 31, 2026 · filed Apr 21, 2026 Compact

Position Value

$16,980,810

-$5,319,441 QoQ

Shares Held

52,608

-16.8% QoQ

Ownership

0.025%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2020

24 quarters on record

Voting authority Sole 75.0209093673966.ToString("F0")% Shared 0.ToString("F0")% None 24.979090632603405.ToString("F0")%

Financial Services · as of Mar 31, 2026

Robeco Institutional Asset Management B.V. holds $124,765,566 across 5 Insurance Brokers names. AON ranks #2 (13.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MRSH	Marsh & Mclennan Companies, Inc.	605,301	$104,989,458
2	AON	Aon plc This page	52,608	$16,980,810
3	ERIE	Erie Indemnity Co	5,313	$1,335,210
4	AJG	Arthur J. Gallagher & Co.	4,543	$983,922
5	WTW	Willis Towers Watson PLC	1,638	$476,166

24 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$16,980,810	52,608	-16.8%	Shares	Defined	2026-04-21
2025-12-31	$22,300,251	63,195	+11.9%	Shares	Defined	2026-01-23
2025-09-30	$20,137,498	56,474	-1.2%	Shares	Defined	2025-10-22
2025-06-30	$20,397,753	57,175	+5.7%	Shares	Defined	2025-07-18
2025-03-31	$21,593,961	54,108	+1.4%	Shares	Defined	2025-04-23
2024-12-31	$19,165,136	53,361	+1.8%	Shares	Defined	2025-01-23
2024-09-30	$18,129,876	52,400	-9.7%	Shares	Defined	2024-10-29
2024-06-30	$17,034,098	58,022	-22.9%	Shares	Defined	2024-07-23
2024-03-31	$25,111,428	75,247	-40.6%	Shares	Defined	2024-04-24
2023-12-31	$36,868,159	126,686	+81.3%	Shares	Defined	2024-02-14
2023-09-30	$22,660,060	69,891	+57.8%	Shares	Defined	2023-10-24
2023-06-30	$15,290,979	44,296	+29.3%	Shares	Defined	2023-07-24
2023-03-31	$10,799,313	34,252	-0.1%	Shares	Defined	2023-05-04
2022-12-31	$10,292,701	34,293	-25.3%	Shares	Defined	2023-02-07
2022-09-30	$12,289,071	45,877	-3.6%	Shares	Defined	2022-12-01
2022-06-30	$12,833,531	47,588	+94.4%	Shares	Defined	2022-12-01
2022-03-31	$7,972,724	24,484	-78.1%	Shares	Defined	2022-12-01
2021-12-31	$33,638,074	111,918	-0.2%	Shares	Defined	2022-12-01
2021-09-30	$32,050,248	112,154	-31.7%	Shares	Defined	2022-12-01
2021-06-30	$39,189,827	164,139	+5.4%	Shares	Defined	2022-12-01
2021-03-31	$35,830,197	155,709	-2.2%	Shares	Defined	2022-12-01
2020-12-31	$33,648,339	159,267	-4.7%	Shares	Defined	2022-12-01
2020-09-30	$34,474,793	167,110	+2.9%	Shares	Defined	2021-01-19
2020-06-30	$31,282,092	162,420	—	Shares	Defined	2021-01-19
No filing history on record for this holder in this stock.