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Arthur J. Gallagher & Co.

AJG
Exchange
NYSE
Industry
Insurance Agents, Brokers & Service
SEC CIK
0000354190

In the last 90 days, Arthur J. Gallagher & Co. insiders filed 0 open-market purchases and 4 sales; 1,295 institutions reported holding it in 13F filings for Q2 2026, worth $54.7B in total; no superinvestor holds it.

13F holders, Q4 2025

Institutional positions in Arthur J. Gallagher & Co. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
1,299
−14 vs. Q3 2025
Shares held
234.2M
+9.18M (+4.1%) vs. Q3 2025
Total value
$60.6B
−$9.03B (−13.0%) vs. Q3 2025
New holders
159
393 more added
Sold out
173
566 more reduced

28 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting AJG on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2025: 1,299 institutions
Q1 2021: 732 institutionsQ2 2021: 779 institutionsQ3 2021: 775 institutionsQ4 2021: 854 institutionsQ1 2022: 817 institutionsQ2 2022: 823 institutionsQ3 2022: 865 institutionsQ4 2022: 921 institutionsQ1 2023: 951 institutionsQ2 2023: 976 institutionsQ3 2023: 999 institutionsQ4 2023: 1,082 institutionsQ1 2024: 1,130 institutionsQ2 2024: 1,153 institutionsQ3 2024: 1,203 institutionsQ4 2024: 1,325 institutionsQ1 2025: 1,359 institutionsQ2 2025: 1,379 institutionsQ3 2025: 1,341 institutionsQ4 2025: 1,299 institutionsQ1 2026: 1,248 institutionsQ2 2026: 1,295 institutions
Value heldQ4 2025: $60.6B
Q1 2021: $20.6BQ2 2021: $24.6BQ3 2021: $26.3BQ4 2021: $30.1BQ1 2022: $31.0BQ2 2022: $29.1BQ3 2022: $31.2BQ4 2022: $34.1BQ1 2023: $34.7BQ2 2023: $39.9BQ3 2023: $42.3BQ4 2023: $41.9BQ1 2024: $46.5BQ2 2024: $49.1BQ3 2024: $52.8BQ4 2024: $65.9BQ1 2025: $79.0BQ2 2025: $72.9BQ3 2025: $69.7BQ4 2025: $60.6BQ1 2026: $49.7BQ2 2026: $54.7B
Institutions holding AJG and their total value by quarter
QuarterHoldersValue
Q2 20261,295$54.7B
Q1 20261,248$49.7B
Q4 20251,299$60.6B
Q3 20251,341$69.7B
Q2 20251,379$72.9B
Q1 20251,359$79.0B
Q4 20241,325$65.9B
Q3 20241,203$52.8B
Q2 20241,153$49.1B
Q1 20241,130$46.5B
Q4 20231,082$41.9B
Q3 2023999$42.3B
Q2 2023976$39.9B
Q1 2023951$34.7B
Q4 2022921$34.1B
Q3 2022865$31.2B
Q2 2022823$29.1B
Q1 2022817$31.0B
Q4 2021854$30.1B
Q3 2021775$26.3B
Q2 2021779$24.6B
Q1 2021732$20.6B

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Arthur J. Gallagher & Co.; share changes are against Q3 2025.

Institutions holding AJG in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Oribel Capital Management, LP0$00.00%−128,700−100.0%Sold out
Visualize Group LP0$00.00%−106,294−100.0%Sold out
Longbow Finance SA0$00.00%−52,079−100.0%Sold out
Bridgewater Associates, LP0$00.00%−39,190−100.0%Sold out
Agf Management Ltd0$00.00%−29,823−100.0%Sold out
La Banque Postale Asset Management SA0$00.00%−28,738−100.0%Sold out
Boothbay Fund Management, LLC0$00.00%−24,361−100.0%Sold out
Susquehanna Fundamental Investments, LLC0$00.00%−23,311−100.0%Sold out
Empowered Funds, LLC0$00.00%−19,639−100.0%Sold out
SummitTX Capital, L.P.0$00.00%−15,887−100.0%Sold out
1832 Asset Management L.P.0$00.00%−15,000−100.0%Sold out
William Blair Investment Management, LLC0$00.00%−13,511−100.0%Sold out
Lombard Odier Asset Management (Switzerland) SA0$00.00%−12,615−100.0%Sold out
New Vernon Investment Management LLC0$00.00%−12,141−100.0%Sold out
WESPAC Advisors SoCal, LLC0$00.00%−11,504−100.0%Sold out
Telligent Fund, LP0$00.00%−10,000−100.0%Sold out
Harvest Investment Services, LLC0$00.00%−9,992−100.0%Sold out
Group One Trading, L.P.0$00.00%−9,415−100.0%Sold out
Worldquant Millennium Advisors LLC0$00.00%−9,052−100.0%Sold out
Hohimer Wealth Management, LLC0$00.00%−7,976−100.0%Sold out
Cox Capital Mgt LLC0$00.00%−7,316−100.0%Sold out
Contravisory Investment Management, Inc.0$00.00%−5,424−100.0%Sold out
Ossiam0$00.00%−5,061−100.0%Sold out
Maridea Wealth Management LLC0$00.00%−5,230−100.0%Sold out
Voleon Capital Management LP0$00.00%−3,618−100.0%Sold out
Tritonpoint Wealth, LLC0$00.00%−3,617−100.0%Sold out
FORA Capital, LLC0$00.00%−3,612−100.0%Sold out
Arete Wealth Advisors, LLC0$00.00%−3,469−100.0%Sold out
Custom Index Systems, LLC0$00.00%−3,139−100.0%Sold out
Sageworth Trust Co0$00.00%−2,899−100.0%Sold out
Ashton Thomas Securities, LLC0$00.00%−2,893−100.0%Sold out
Prudent Man Advisors, LLC0$00.00%−2,845−100.0%Sold out
Man Group plc0$00.00%−2,759−100.0%Sold out
Simplex Trading, LLC0$00.00%−2,518−100.0%Sold out
Scratch Capital LLC0$00.00%−2,501−100.0%Sold out
Catalina Capital Group, LLC0$00.00%−2,435−100.0%Sold out
Axq Capital, LP0$00.00%−2,358−100.0%Sold out
My Personal CFO, LLC0$00.00%−2,320−100.0%Sold out
Aster Capital Management (DIFC) Ltd0$00.00%−2,093−100.0%Sold out
Banque Cantonale Vaudoise0$00.00%−2,074−100.0%Sold out
Empirical Asset Management, LLC0$00.00%−3,784−100.0%Sold out
Capstone Investment Advisors, LLC0$00.00%−1,844−100.0%Sold out
Pitcairn Co0$00.00%−1,806−100.0%Sold out
OneAscent Wealth Management LLC0$00.00%−1,664−100.0%Sold out
Mesirow Financial Investment Management, Inc.0$00.00%−1,624−100.0%Sold out
TownSquare Capital, LLC0$00.00%−1,624−100.0%Sold out
National Wealth Management Group, LLC0$00.00%−1,604−100.0%Sold out
Illinois Municipal Retirement Fund0$00.00%−1,602−100.0%Sold out
XTX Topco Ltd0$00.00%−1,555−100.0%Sold out
Capital Investment Advisory Services, LLC0$00.00%−1,453−100.0%Sold out
Mount Yale Investment Advisors, LLC0$00.00%−1,442−100.0%Sold out
FJ Capital Management LLC0$00.00%−1,371−100.0%Sold out
Sage Mountain Advisors LLC0$00.00%−1,328−100.0%Sold out
Brevan Howard Capital Management LP0$00.00%−1,253−100.0%Sold out
Integrated Advisors Network LLC0$00.00%−1,238−100.0%Sold out
Deltec Asset Management LLC0$00.00%−1,230−100.0%Sold out
Integrated Wealth Concepts LLC0$00.00%−1,206−100.0%Sold out
Moran Wealth Management, LLC0$00.00%−1,184−100.0%Sold out
Strategic Investment Advisors0$00.00%−1,142−100.0%Sold out
Meyer Handelman Co0$00.00%−1,131−100.0%Sold out
Cinctive Capital Management LP0$00.00%−1,076−100.0%Sold out
Epoch Investment Partners, Inc.0$00.00%−1,051−100.0%Sold out
Carderock Capital Management Inc0$00.00%−1,050−100.0%Sold out
Portside Wealth Group, LLC0$00.00%−1,049−100.0%Sold out
Independent Financial Group, LLC0$00.00%−1,036−100.0%Sold out
Chung Wu Investment Group, LLC0$00.00%−1,012−100.0%Sold out
Brighton Jones LLC0$00.00%−980−100.0%Sold out
Clear Creek Financial Management, LLC0$00.00%−971−100.0%Sold out
Evergreen Capital Management LLC0$00.00%−970−100.0%Sold out
Optas, LLC0$00.00%−946−100.0%Sold out
Ibex Wealth Advisors0$00.00%−931−100.0%Sold out
Somerville Kurt F0$00.00%−930−100.0%Sold out
Clarius Group, LLC0$00.00%−888−100.0%Sold out
Wayfinding Financial, LLC0$00.00%−884−100.0%Sold out
Grant Street Asset Management, Inc.0$00.00%−866−100.0%Sold out
Invested Advisors0$00.00%−938−100.0%Sold out
Bellecapital International Ltd.0$00.00%−848−100.0%Sold out
Old National Bancorp0$00.00%−841−100.0%Sold out
Wesbanco Bank Inc0$00.00%−834−100.0%Sold out
KW Wealth Management LLC0$00.00%−829−100.0%Sold out
Capital Investment Advisors, LLC0$00.00%−828−100.0%Sold out
Alpha Family Trust0$00.00%−820−100.0%Sold out
Resonant Capital Advisors, LLC0$00.00%−819−100.0%Sold out
IHT Wealth Management, LLC0$00.00%−790−100.0%Sold out
44 Wealth Management LLC0$00.00%−782−100.0%Sold out
Norden Group LLC0$00.00%−781−100.0%Sold out
Kelly Financial Services LLC0$00.00%−777−100.0%Sold out
Aspiriant, LLC0$00.00%−771−100.0%Sold out
Advisors Capital Management, LLC0$00.00%−770−100.0%Sold out
Turtle Creek Wealth Advisors, LLC0$00.00%−769−100.0%Sold out
Gryphon Financial Partners LLC0$00.00%−767−100.0%Sold out
Morton Capital Management LLC0$00.00%−762−100.0%Sold out
Vinva Investment Management Ltd0$00.00%−772−100.0%Sold out
Mairs & Power Inc0$00.00%−760−100.0%Sold out
Engineers Gate Manager LP0$00.00%−755−100.0%Sold out
Regent Peak Wealth Advisors LLC0$00.00%−752−100.0%Sold out
Intrepid Capital Management Inc0$00.00%−750−100.0%Sold out
Equitable Trust Co0$00.00%−749−100.0%Sold out
Caitong International Asset Management Co., Ltd0$00.00%−746−100.0%Sold out
Washington Trust Bank0$00.00%−740−100.0%Sold out