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Institutional ownership intelligence
Schedule 13G/A

AJG Schedule 13G/A filing by JPMorgan Chase / Asset Management

JPMorgan Chase / Asset Management reported beneficial ownership of 20.2M shares, representing 12% of Arthur J. Gallagher & Co. in this filing.

FiledOct 31, 2025
Ownership dateSep 30, 2025
Reported shares20.2M
Reported ownership12%
Ownership details

Voting and dispositive power reported in the filing

These figures describe the reporting filer’s disclosed voting and investment authority. They should be read together with the reported share count and percentage.

Sole voting power 16.9M
Shared voting power 20.0M
Sole dispositive power 20.0M
Shared dispositive power 20.2M
Price context

Price dates alongside the ownership filing

Price data provides market context around the disclosure. It does not identify the filer’s actual transaction price.

Close near filing date$249.49as of Oct 31, 2025
Latest tracked price$251.03as of Aug 5, 2026
Source

Original filing and accession

Use the SEC filing as the primary source when you need the complete disclosure, footnotes, exhibits, or reporting-person details.

Reporting filer
JPMorgan Chase / Asset Management
CIK
CIK0000019617
Accession
0000019617-25-001049
Form
Schedule 13G/A
Read the filing in context

Understand what a Schedule 13 filing does—and does not—tell you.