AON | Aon-A | Owners

S&P 500$7,722.60
+0.60%
2m
DOW 30$52,377.57
+0.03%
2m
NASDAQ 100$29,651.44
+1.29%
2m
Russell 2000$280.18
+1.15%
2m
Russell 1000$420.41
+0.56%
2m
S&P 400$3,657.50
+0.40%
2m
S&P 600$1,698.59
+0.54%
2m

Aon-A (AON)

NYSE

$315.64+$13.13 (+4.34%)

Price as of Oct 28, 2026 4:37 PM EDT

$64.2B
Market Cap
-7.47%
1-Year Change
Insurance Brokers
Industry

Top Holders

Institutional

Mutual Funds

Holder	Ownership %	Shares Held	Change (Shares, %)	Report Date
VANGUARD GROUP INC	9.51%	20.2M	+191,658 (+0.95%)	Dec 31, 2025
BLACKROCK, INC.	7.41%	15.7M	-432,078 (-2.75%)	Jun 30, 2026
BLACKROCK INC.	7.20%	15.3M	+781,417 (+5.12%)	Jun 30, 2024
BLACKROCK FUNDING, INC. /DE	6.96%	14.8M	+501,175 (+3.40%)	Dec 31, 2024
VANGUARD CAPITAL MANAGEMENT LLC	6.41%	13.6M	+21,709 (+0.16%)	Jun 30, 2026
JPMORGAN CHASE & CO	5.74%	12.2M	+6.5M (+53.67%)	Jun 30, 2026
CAPITAL WORLD INVESTORS	5.52%	11.7M	+233,862 (+2.00%)	Jun 30, 2026

Holder	Ownership %	Shares Held	Change (Shares, %)	Report Date
VANGUARD INDEX FUNDS	8.01%	17.0M	+3.0M (+17.41%)	Jun 30, 2026
DODGE & COX FUNDS	3.27%	6.9M	+267,800 (+3.86%)	Jun 30, 2026
AMERICAN CENTURY ETF TRUST	1.82%	3.9M	+354,000 (+9.16%)	May 31, 2026
PACIFIC FUNDS SERIES TRUST	1.77%	3.8M	+3.8M (+100.00%)	Mar 31, 2023
BAIRD FUNDS INC	0.60%	1.3M	0 (0.00%)	Jun 30, 2026
VANGUARD INSTITUTIONAL INDEX FUNDS	0.59%	1.3M	-50,730 (-4.04%)	Jun 30, 2026
VANGUARD SPECIALIZED FUNDS	0.57%	1.2M	+4,039 (+0.33%)	Jul 31, 2026

Current Ownership Distribution

Institutions3.5B (54.00%)
Mutual Funds3.0B (45.67%)
Insiders21.4M (0.33%)
Other0 (0.00%)

Insider Transactions

0.33% (21.4M)
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)
$38.4M
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 28, 2026	$263,200.00	700	$376.00	12,704
Zeidel Darren General Counsel	Sell	Jul 28, 2026	$274,050.00	725	$378.00	11,979
Zeidel Darren General Counsel	Sell	Jul 28, 2026	$180,500.00	475	$380.00	11,504
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
STAVRIDIS JAMES G.	Award	Jun 25, 2026	$0.00	776	$0.00	1,564
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
SMITH SARAH G	Award	Jun 25, 2026	$0.00	776	$0.00	2,300
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
STAVRIDIS JAMES G.	In Kind	Jun 25, 2026	$58,840.95	186	$315.95	1,377
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
Cai Jin-Yong	Award	Jun 25, 2026	$0.00	776	$0.00	8,241
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