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MATTERN CAPITAL MANAGEMENT, LLC

Position in AON — Aon plc

CIK 1803227 LAKEWOOD, CO

Position in AON

as of Jun 30, 2026 · filed Jul 24, 2026
Position Value
$1,591,448
+$262,886 QoQ
Shares Held
4,798
+16.6% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.20%
of 13F equity value
Holder Rank
#512
of 1,247 holders
Holding Since
Jun 2020
25 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in AON Over Time

Shares Held

Position Value (USD)

Position in Insurance Brokers

Financial Services · as of Jun 30, 2026

MATTERN CAPITAL MANAGEMENT, LLC holds $13,558,834 across 3 Insurance Brokers names. AON ranks #2 (11.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 AON
Aon plc
This page
4,798 $1,591,448

All Filings in AON

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25 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,591,448 4,798
2026-03-31 $1,328,562 4,116
2025-12-31 $1,402,345 3,974
2025-09-30 $1,405,281 3,941
2025-06-30 $1,154,832 3,237
2025-03-31 $1,148,980 2,879
2024-12-31 $978,351 2,724
2024-09-30 $915,835 2,647
2024-06-30 $727,491 2,478
2024-03-31 $714,494 2,141
2023-12-31 $340,493 1,170
2023-09-30 $379,337 1,170
2023-06-30 $403,884 1,170
2023-03-31 $368,889 1,170
2022-12-31 $351,163 1,170
2022-09-30 $313,407 1,170
2022-06-30 $315,525 1,170
2022-03-31 $380,987 1,170
2021-12-31 $351,655 1,170
2021-09-30 $334,350 1,170
2021-06-30 $325,429 1,363
2021-03-31 $313,639 1,363
2020-12-31 $287,961 1,363
2020-09-30 $281,186 1,363
2020-06-30 $262,513 1,363