Security key
363576109
Arthur J. Gallagher & Co. - Common Stock, par value $1.00 per share (AJG)
CUSIP: 363576109
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock, par value $1.00 per share
- Total 13F shares
- 234,104,494
- Total 13F value
- $60,539,925,827
- Share change
- +8,139,342
- Put/Call ratio
- 63%
- SEC-reported price per share
- $258.79
- Number of holders
- 1,293
- Value change
- +$2,062,403,776
- Number of buys
- 467
- Number of sells
- 738
- Shares outstanding
- 257,468,655
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
1,293
Top holders
10
AJG full security history
Ownership snapshot
Full 13F holder table
Arthur J. Gallagher & Co. SEC filings
Arthur J. Gallagher & Co. company facts
Broader feeds
Ownership snapshot
Top reported holders of AJG - Arthur J. Gallagher & Co. - Common Stock, par value $1.00 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
30 Sep 2025
13F
13D/G
3/4/5
Lead comparable stake: 6.9%
13D/G row: BlackRock, Inc.
Showing 1-6 of 15 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 6.9%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
6.9%
Capital World Investors
5%
Sherry S. Barrat
0.01%
VANGUARD GROUP INC
12%
JPMORGAN CHASE & CO
7.9%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
6.9%
from 13D/G
|
$5,750,007,008
18,563,980 shares
|
— | 30 Sep 2025 |
| Capital World Investors |
13F
13D/G
Company
|
5%
from 13D/G
|
$3,649,476,890
11,783,119 shares
|
— | 30 Sep 2025 |
| Sherry S. Barrat |
3/4/5
Director
|
0.01%
|
$5,618,036
18,073 shares
|
— | 13 May 2025 |
| VANGUARD GROUP INC |
13F
Company
|
12%
|
$9,655,621,040
31,173,310 shares
|
— | 30 Sep 2025 |
| JPMORGAN CHASE & CO |
13F
Company
|
7.9%
|
$6,299,674,457
20,338,533 shares
|
— | 30 Sep 2025 |
| FMR LLC |
13F
Company
|
4.9%
|
$3,881,848,085
12,532,601 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
1,293
Shares
234,104,494
Rows available
1,293
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
1,328
Q4 2025 holders
1,293
Holder diff
-35
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|