13F Insight
DOSSIER · 13F Holders · Q1 2026

AON PLC

1,312 institutions still hold AON PLC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G0403H108·1,312 13F holders·last filed Mar 31, 2026
Market cap
—
13F value held
$36.2B
visible holders
Holders
1,312
filers reporting
Concentration
14.38%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

1,312 institutions reported AON PLC in Q1 2026. BlackRock, Inc. leads at 14.4% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$5.2B16.1M0.09%Q1 202602
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$4.4B13.6M0.11%Q1 202603
Capital World Investors
CIK 0001422849
$3.7B11.5M0.51%Q1 202604
STATE STREET CORP
CIK 0000093751
$3.0B9.2M0.10%Q1 202605
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
CIK 0000912938
$2.8B8.4M0.93%Q1 202606
DODGE & COX
CIK 0000200217
$2.6B8.1M1.44%Q1 202607
MORGAN STANLEY
CIK 0000895421
$2.1B6.4M0.12%Q1 202608
JPMORGAN CHASE & CO
CIK 0000019617
$1.8B5.6M0.12%Q1 202609
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$1.7B5.2M0.10%Q1 202610
Vanguard Portfolio Management
CIK 0002100121· Index
$1.5B4.6M0.08%Q1 202611
Bank of New York Mellon Corp
CIK 0001390777
$1.1B3.3M0.20%Q1 202612
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main
CIK 0001694217
$952M2.9M0.84%Q1 202613
Independent Franchise Partners LLP
CIK 0001483866
$835M2.6M5.85%Q1 202614
Mitsubishi UFJ Asset Management Co., Ltd.
CIK 0001466546
$812M2.5M0.55%Q1 202615
FARALLON CAPITAL MANAGEMENT LLC
CIK 0000909661
$811M2.5M4.62%Q1 202616
NORTHERN TRUST CORP
CIK 0000073124· Index
$672M2.1M0.09%Q1 202617
WCM INVESTMENT MANAGEMENT, LLC
CIK 0001061186
$633M2.0M1.44%Q1 202618
Boston Partners
CIK 0001386060
$631M2.0M0.66%Q1 202619
Neuberger Berman Group LLC
CIK 0001465109
$600M1.9M0.46%Q1 202620
Artisan Partners Limited Partnership
CIK 0001466153
$531M1.6M0.85%Q1 2026
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