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Mesirow Financial Investment Management, Inc.

Position in AON — Aon plc

CIK 1469475 CHICAGO, IL

Position in AON

as of Jun 30, 2026 · filed Jul 22, 2026
Position Value
$1,611,681
+$31,028 QoQ
Shares Held
4,859
-0.8% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
#509
of 1,246 holders
Holding Since
Dec 2023
11 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

Mesirow Financial Investment Management, Inc. holds $2,393,438 across 2 Insurance Brokers names. AON ranks #1 (67.3% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 AON
Aon plc
This page
4,859 $1,611,681

All Filings in AON

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11 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,611,681 4,859
2026-03-31 $1,580,653 4,897
2025-12-31 $1,725,936 4,891
2025-09-30 $2,013,250 5,646
2025-06-30 $2,033,175 5,699
2025-03-31 $2,318,313 5,809
2024-12-31 $2,045,416 5,695
2024-09-30 $2,076,977 6,003
2024-06-30 $1,083,897 3,692
2024-03-31 $1,451,014 4,348
2023-12-31 $1,512,430 5,197