STATE OF MICHIGAN RETIREMENT SYSTEM

Pension

Position in AON — Aon plc

CIK 762152 EAST LANSING, MI

Position in AON

as of Jun 30, 2026 · filed Jul 30, 2026 Compact

Position Value

$18,129,512

+$35,111 QoQ

Shares Held

54,658

-2.5% QoQ

Ownership

0.026%

of shares outstanding

% of Portfolio

0.09%

of 13F equity value

Holder Rank

#199

of 1,247 holders

Holding Since

Jun 2020

25 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Financial Services · as of Jun 30, 2026

STATE OF MICHIGAN RETIREMENT SYSTEM holds $67,563,622 across 6 Insurance Brokers names. AON ranks #2 (26.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MRSH	Marsh & Mclennan Companies, Inc.	128,075	$21,346,260
2	AON	Aon plc This page	54,658	$18,129,512
3	AJG	Arthur J. Gallagher & Co.	65,787	$15,102,721
4	WTW	Willis Towers Watson PLC	25,092	$6,558,296
5	BRO	Brown & Brown, Inc.	74,651	$4,788,861
6	ERIE	Erie Indemnity Co	6,832	$1,637,972

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$18,129,512	54,658	-2.5%	Shares	Sole	2026-07-30
2026-03-31	$18,094,401	56,058	-0.4%	Shares	Sole	2026-05-04
2025-12-31	$19,852,323	56,258	-3.6%	Shares	Sole	2026-01-29
2025-09-30	$20,809,295	58,358	-0.7%	Shares	Sole	2025-11-05
2025-06-30	$20,962,504	58,758	+0.2%	Shares	Sole	2025-08-05
2025-03-31	$23,409,821	58,658	0.0%	Shares	Sole	2025-04-30
2024-12-31	$21,067,607	58,658	-0.8%	Shares	Sole	2025-02-06
2024-09-30	$20,468,076	59,158	-0.7%	Shares	Sole	2024-11-04
2024-06-30	$17,485,037	59,558	+8.6%	Shares	Sole	2024-07-26
2024-03-31	$18,307,211	54,858	0.0%	Shares	Sole	2024-04-18
2023-12-31	$15,964,775	54,858	-1.4%	Shares	Sole	2024-01-23
2023-09-30	$18,045,436	55,658	-0.9%	Shares	Sole	2023-10-27
2023-06-30	$19,385,741	56,158	-0.4%	Shares	Sole	2023-07-26
2023-03-31	$17,769,113	56,358	+0.2%	Shares	Sole	2023-04-28
2022-12-31	$16,885,276	56,258	-1.4%	Shares	Sole	2023-01-27
2022-09-30	$15,284,126	57,058	-0.5%	Shares	Sole	2022-10-24
2022-06-30	$15,468,305	57,358	+5.9%	Shares	Sole	2022-08-08
2022-03-31	$17,635,469	54,158	-2.3%	Shares	Sole	2022-05-04
2021-12-31	$16,658,237	55,424	-11.9%	Shares	Sole	2022-01-27
2021-09-30	$17,981,791	62,924	0.0%	Shares	Sole	2021-10-27
2021-06-30	$15,023,734	62,924	0.0%	Shares	Sole	2021-07-27
2021-03-31	$14,479,441	62,924	-1.3%	Shares	Sole	2021-07-27
2020-12-31	$13,462,969	63,724	-0.6%	Shares	Sole	2021-07-27
2020-09-30	$13,228,781	64,124	+8.6%	Shares	Sole	2020-10-26
2020-06-30	$11,368,022	59,024	—	Shares	Sole	2020-07-29
No filing history on record for this holder in this stock.