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ROCKWOOD RESEARCH · A CORPORATE FILINGS WEBSITE|STRAIGHT FROM THE SOURCE · SEC EDGAR|SPONSOREDYour message on this tape — bid on the Rockwood Ad Exchange · Rockwood Ad Exchange|
Rockwood Research
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AJG

Arthur J. Gallagher & Co.

Insurance Agents, Brokers & Service · SIC 6411CIK 354190Held by 12 tracked managersEDGAR filings ↗10-K/10-Q ↗

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12 managers · Q2 2026 13F
Brave Warrior Advisors
Glenn GreenbergPosition history →
6.4%
NEW
First Pacific Advisors
FPAPosition history →
3.8%
+244.7%
Eagle Capital Management
Eagle Capital ManagementPosition history →
3.4%
+83.5%
Dodge & Cox
Dodge & CoxPosition history →
1.1%
+27.3%
WCM Investment Management
WCM Investment ManagementPosition history →
1.00%
+2.7%
Torray Funds
TorrayPosition history →
0.81%
(9.5%)
Mairs & Power
Mairs & PowerPosition history →
0.66%
NEW
Capital World Investors
Capital World InvestorsPosition history →
0.34%
(9.4%)
Adage Capital Management
Adage Capital ManagementPosition history →
0.26%
+134.5%
Capital Research Global Investors
Capital Research Global InvestorsPosition history →
0.08%
(13.2%)
Ariel Investments
John RogersPosition history →
0.04%
(5.9%)
Alps Advisors
Alps AdvisorsPosition history →
<0.01%
NEW

Weight = position value ÷ the manager's total 13F long-equity value in the same filing — one definition for every row. “1st obs.” marks a position with no earlier stored 13F to compare against — it is not shown as a purchase.