DOSSIER · 13F Holders · Q1 2026Financial Services · Insurance Agents, Brokers & Service
AJG

GALLAGHER ARTHUR J & CO

1,330 institutions still hold GALLAGHER ARTHUR J & CO as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 363576109·Insurance Agents, Brokers & Service·1,330 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$32.6B
visible holders
Holders
1,330
filers reporting
Concentration
12.96%
JPMORGAN CHASE & CO #1
top holder share
AI Holders Summary · Q1 2026

Old Republic International Corp, Arthur J. Gallagher's third-largest tracked holder at $43.8 million, carried the identical 190,800-share position this quarter as last — its value rising only on price. That stillness sits next to real, sizable buying elsewhere: Fort Washington Investment Advisors grew its stake 40.4%, a genuine $17.0 million purchase, the largest real buy among the stock's 168 holders. Fenimore Asset Management, the dominant holder at over $132 million, added a smaller real 1.8% ($2.4 million buy). On the sell side, Assenagon Asset Management, flagged quasi-passive, cut 46.0% ($6.6 million real outflow), and Fisher Funds Management cut 12.7% ($6.0 million real outflow) — the two largest genuine sales in the book.

Real conviction elsewhere dwarfs that stillness

Fort Washington Investment Advisors made the clearest real move in the book: shares up 40.4%, from 183,381 to 257,445, a genuine $17.0 million purchase — the largest buy among Gallagher's 168 tracked holders by a wide margin. Fenimore Asset Management, the stock's dominant holder at over $132 million, added a smaller but real 1.8% ($2.4 million buy). Sequoia Financial Advisors added 7.1% ($2.3 million real buy), and Wealth Enhancement Advisory Services added 24.8% ($2.5 million real buy).

Top holders

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

#HolderValueShares% port.Quarter
01
JPMORGAN CHASE & CO
CIK 0000019617
$4.2B19.6M0.27%Q1 2026
02
BlackRock, Inc.
CIK 0002012383
$4.2B19.3M0.07%Q1 2026
03
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$3.6B16.7M0.09%Q1 2026
04
FMR LLC
CIK 0000315066
$3.2B14.6M0.17%Q1 2026
05
Capital World Investors
CIK 0001422849
$3.0B13.8M0.41%Q1 2026
06
Vanguard Portfolio Management
CIK 0002100121· Index
$2.7B12.4M0.14%Q1 2026
07
STATE STREET CORP
CIK 0000093751
$2.4B11.0M0.08%Q1 2026
08
DODGE & COX
CIK 0000200217
$1.6B7.4M0.88%Q1 2026
09
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$1.4B6.2M0.08%Q1 2026
10
MORGAN STANLEY
CIK 0000895421
$878M4.1M0.05%Q1 2026
11
PRINCIPAL FINANCIAL GROUP INC
CIK 0001126328
$702M3.2M0.38%Q1 2026
12
Capital Research Global Investors
CIK 0001422848
$645M3.0M0.10%Q1 2026
13
EAGLE CAPITAL MANAGEMENT LLC
CIK 0000945631
$577M2.7M1.94%Q1 2026
14
Capital International Investors
CIK 0001562230
$562M2.6M0.13%Q1 2026
15
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$560M2.6M0.10%Q1 2026
16
BROWN ADVISORY INC
CIK 0001345929
$525M2.0M0.73%Q4 2025
17
GTCR LLC
CIK 0001576350
$514M2.4M13.60%Q1 2026
18
WCM INVESTMENT MANAGEMENT, LLC
CIK 0001061186
$510M2.4M1.16%Q1 2026
19
NORTHERN TRUST CORP
CIK 0000073124· Index
$483M2.2M0.06%Q1 2026
20
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$457M2.1M0.07%Q1 2026
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Insiders at GALLAGHER ARTHUR J & CO
Pesch Michael RobertGallagher Thomas JosephJain VishalHowell Douglas KCary Richard CMiskel Christopher C.Johnson David SGallagher Patrick Murphy