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First Business Financial Services, Inc.

Position in AON — Aon plc

CIK 1521951 MADISON, WI

Position in AON

as of Jun 30, 2026 · filed Jul 28, 2026
Position Value
$411,958
-$34,769 QoQ
Shares Held
1,242
-10.3% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.11%
of 13F equity value
Holder Rank
#798
of 1,247 holders
Holding Since
Dec 2020
23 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

First Business Financial Services, Inc. holds $650,022 across 2 Insurance Brokers names. AON ranks #1 (63.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 AON
Aon plc
This page
1,242 $411,958

All Filings in AON

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23 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $411,958 1,242
2026-03-31 $446,727 1,384
2025-12-31 $488,385 1,384
2025-09-30 $493,506 1,384
2025-06-30 $493,755 1,384
2025-03-31 $552,340 1,384
2024-12-31 $586,149 1,632
2024-09-30 $564,655 1,632
2024-06-30 $479,122 1,632
2024-03-31 $544,631 1,632
2023-12-31 $474,944 1,632
2023-09-30 $625,096 1,928
2023-06-30 $663,129 1,921
2023-03-31 $605,672 1,921
2022-12-31 $576,568 1,921
2022-09-30 $514,578 1,921
2022-06-30 $518,055 1,921
2022-03-31 $625,535 1,921
2021-12-31 $577,375 1,921
2021-09-30 $548,964 1,921
2021-06-30 $458,657 1,921
2021-03-31 $442,041 1,921
2020-12-31 $359,370 1,701