AON
Aon-A (AON)
NYSE
$367.35$0.00 (0.00%)
Price as of Jul 14, 2026 6:17 AM EDT
  • $78.5B
    Market Cap
  • 3.02%
    1-Year Change
  • Insurance Brokers
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD GROUP INC
9.44%
20.2M
+191,658 (+0.95%)
Dec 31, 2025
BLACKROCK, INC.
7.56%
16.1M
-88,427 (-0.55%)
Mar 31, 2026
BLACKROCK INC.
7.15%
15.3M
+781,417 (+5.12%)
Jun 30, 2024
BLACKROCK FUNDING, INC. /DE
6.91%
14.8M
+501,175 (+3.40%)
Dec 31, 2024
CAPITAL WORLD INVESTORS
5.37%
11.5M
-775,116 (-6.75%)
Mar 31, 2026
STATE STREET CORP
4.32%
9.2M
+15,800 (+0.17%)
Mar 31, 2026
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
3.91%
8.4M
-186,939 (-2.24%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions3.3B (54.59%)
  • Mutual Funds2.7B (45.06%)
  • Insiders21.2M (0.35%)
  • Other0 (0.00%)

Insider Transactions

  • 0.35% (21.2M)
    Current InsiderOwnership (%, shares)
  • 1
    Number of InsiderBuying (last 12 months)
  • $44.4M
    Amount of InsiderBuying (last 12 months)
  • 1
    Number of InsiderSelling (last 12 months)
  • $25.5M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Zeidel Darren
General Counsel
Sell
Jul 07, 2026
$216,000.00
600
$360.00
15,354
Reese Edmund
Chief Financial Officer
Exempt
Jul 01, 2026
$0.00
3,975
$0.00
3,975
Reese Edmund
Chief Financial Officer
Exempt
Jul 01, 2026
$0.00
3,975
$0.00
6,099
Reese Edmund
Chief Financial Officer
In Kind
Jul 01, 2026
$755,183.36
2,198
$343.56
3,901
Spruell Byron
Award
Jun 25, 2026
$0.00
776
$0.00
6,563
SMITH SARAH G
Award
Jun 25, 2026
$0.00
776
$0.00
2,300
FRANCIS CHERYL A
Award
Jun 25, 2026
$0.00
776
$0.00
29,480
CAMPBELL JEFFREY C
Award
Jun 25, 2026
$0.00
776
$0.00
12,807
Jenkins Jo Ann
Award
Jun 25, 2026
$0.00
776
$0.00
1,060
STAVRIDIS JAMES G.
Award
Jun 25, 2026
$0.00
776
$0.00
1,564
Karaboutis Adriana
Award
Jun 25, 2026
$0.00
776
$0.00
2,792
CAMPBELL JEFFREY C
In Kind
Jun 25, 2026
$58,840.95
186
$315.95
12,621
Alvarez Jose Antonio
Award
Jun 25, 2026
$0.00
776
$0.00
1,643
Cai Jin-Yong
Award
Jun 25, 2026
$0.00
776
$0.00
8,241
FRANCIS CHERYL A
In Kind
Jun 25, 2026
$58,840.95
186
$315.95
29,294
KNIGHT LESTER B
Award
Jun 25, 2026
$0.00
1,488
$0.00
5,227
Jenkins Jo Ann
In Kind
Jun 25, 2026
$58,840.95
186
$315.95
874
STAVRIDIS JAMES G.
In Kind
Jun 25, 2026
$58,840.95
186
$315.95
1,377
Karaboutis Adriana
In Kind
Jun 25, 2026
$58,840.95
186
$315.95
2,606
SMITH SARAH G
In Kind
Jun 25, 2026
$58,840.95
186
$315.95
2,114
Spruell Byron
In Kind
Jun 25, 2026
$58,840.95
186
$315.95
6,377
Cai Jin-Yong
In Kind
Jun 25, 2026
$125,281.76
397
$315.95
7,845
Alvarez Jose Antonio
In Kind
Jun 25, 2026
$117,681.58
372
$315.95
1,270
SANTONA GLORIA
Award
Jun 25, 2026
$0.00
776
$0.00
22,648
NOTEBAERT RICHARD C
Award
Jun 25, 2026
$0.00
776
$0.00
28,514
SANTONA GLORIA
In Kind
Jun 25, 2026
$58,840.95
186
$315.95
22,462
NOTEBAERT RICHARD C
In Kind
Jun 25, 2026
$58,840.95
186
$315.95
28,328
Marcell Andy
Global CEO, Solution Lines
Exempt
Mar 13, 2026
$0.00
1,166
$0.00
0
Goltermann Lori
CEO, Regions & North America
Exempt
Mar 13, 2026
$0.00
228
$0.00
0
Marcell Andy
Global CEO, Solution Lines
Exempt
Mar 13, 2026
$0.00
464
$0.00
928