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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, Q1 2026

Institutional positions in Arthur J. Gallagher & Co. as of Mar 31, 2026. 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
1,248
−28 vs. Q4 2025
Shares held
229.6M
+35.7M (+18.4%) vs. Q4 2025
Total value
$49.7B
−$464.2M (−0.9%) vs. Q4 2025
New holders
155
432 more added
Sold out
183
473 more reduced

23 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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 holdersQ1 2026: 1,248 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: 1,360 institutionsQ2 2025: 1,380 institutionsQ3 2025: 1,342 institutionsQ4 2025: 1,299 institutionsQ1 2026: 1,248 institutionsQ2 2026: 1,295 institutions
Value heldQ1 2026: $49.7B
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 20251,342$69.7B
Q2 20251,380$72.9B
Q1 20251,360$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, Q1 2026

Shares, value and share of portfolio for each institution holding Arthur J. Gallagher & Co.; share changes are against Q4 2025.

Institutions holding AJG in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Tudor Financial Inc.1,425$308.6K0.16%00.0%Unchanged
Roble, Belko & Company, Inc1,431$310.0K0.04%+200+16.2%Added
Trust Co of the South1,439$311.7K0.05%+1,439New
BCS Private Wealth Management, Inc.1,442$312.3K0.09%+1,442New
Penserra Capital Management LLC1,448$313.0K0.00%+45+3.2%Added
Nicolet Bankshares Inc1,456$314.9K0.01%+1,456New
Mather Group, LLC.1,458$315.7K0.00%−950−39.5%Reduced
Eaton Financial Holdings Company, LLC1,459$316.0K0.10%+1,459New
First Citizens Bank & Trust Co1,470$318.4K0.01%−151−9.3%Reduced
Aigen Investment Management, LP1,484$321.4K0.08%−1,449−49.4%Reduced
Modera Wealth Management, LLC1,496$324.1K0.00%−53−3.4%Reduced
Journey Strategic Wealth LLC1,497$324.2K0.01%+235+18.6%Added
Aviance Capital Partners, LLC1,500$324.9K0.04%00.0%Unchanged
West Paces Advisors Inc.1,500$324.9K0.06%00.0%Unchanged
Longview Financial Advisors, Inc.1,502$325.3K0.20%00.0%Unchanged
Western Wealth Management, LLC1,507$326.4K0.01%00.0%Unchanged
Krilogy Financial LLC1,459$326.9K0.01%+1,459New
Caldwell Trust Co1,522$329.6K0.03%−936−38.1%Reduced
Change Path, LLC1,528$331.0K0.01%+121+8.6%Added
Gateway Wealth Partners, LLC1,531$331.4K0.01%+1,531New
Biltmore Family Office, LLC1,547$335.0K0.05%+27+1.8%Added
Ellevest, Inc.1,551$335.9K0.05%−566−26.7%Reduced
Balboa Wealth Partners1,551$335.9K0.06%−482−23.7%Reduced
Polymer Capital Management (US) LLC1,553$336.3K0.05%−3,754−70.7%Reduced
Raleigh Capital Management Inc.1,562$338.2K0.12%−3−0.2%Reduced
RiverFront Investment Group, LLC1,565$338.9K0.01%+769+96.6%Added
OneAscent Financial Services LLC1,577$341.6K0.02%+768+94.9%Added
Perigon Wealth Management, LLC1,579$342.0K0.01%+214+15.7%Added
HBK Sorce Advisory LLC1,724$342.9K0.01%+196+12.8%Added
Oakworth Capital, Inc.1,586$343.5K0.02%00.0%Unchanged
Atomi Financial Group, Inc.1,588$343.9K0.01%+282+21.6%Added
Private Trust Co NA1,588$343.9K0.03%−40−2.5%Reduced
Bartlett & Co. Wealth Management LLC1,671$345.9K0.00%+1+0.1%Added
LS Investment Advisors, LLC1,600$346.5K0.05%00.0%Unchanged
Carlson Capital L P1,600$346.5K0.14%+1,600New
Intact Investment Management Inc.1,600$346.5K0.01%+1,600New
Capital Asset Advisory Services LLC1,556$347.2K0.01%+5+0.3%Added
Cary Street Partner Investment Advisory LLC1,615$349.8K0.09%−258−13.8%Reduced
Frec Markets, Inc.1,624$351.7K0.06%+415+34.3%Added
Steel Peak Wealth Management LLC1,626$352.2K0.01%+12+0.7%Added
Patrick M Sweeney & Associates, Inc1,645$356.3K0.23%+35+2.2%Added
Quotient Wealth Partners, LLC1,649$357.2K0.01%−273−14.2%Reduced
Plato Investment Management Ltd1,652$358.0K0.02%00.0%Unchanged
Leeward Financial Partners, LLC1,666$360.8K0.11%−606−26.7%Reduced
Miller Investment Management, LP1,672$362.1K0.04%00.0%Unchanged
Advisors Asset Management, Inc.1,674$362.6K0.01%+781+87.5%Added
Delta Global Management LP1,680$363.9K0.03%−4,940−74.6%Reduced
AMG National Trust Bank1,688$365.6K0.01%+288+20.6%Added
Ritholtz Wealth Management1,697$367.5K0.01%−8,364−83.1%Reduced
Private Advisory Group LLC1,704$369.1K0.03%−862−33.6%Reduced
Dynamic Advisor Solutions LLC1,706$369.5K0.01%−39−2.2%Reduced
Obermeyer Wood Investment Counsel, LLLP1,708$369.9K0.02%−32−1.8%Reduced
Tiaa-Cref Individual & Institutional Services, LLC1,708$369.9K0.00%+1,708New
Sapient Capital LLC1,709$370.1K0.01%+1,709New
CX Institutional1,715$371.0K0.01%−283−14.2%Reduced
Aaron Wealth Advisors1,716$371.7K0.02%+54+3.2%Added
Havemeyer Place LP1,735$375.8K0.04%+1,735New
Supplemental Annuity Collective Trust of NJ1,739$376.6K0.11%+1,739New
Mission Creek Capital Partners, Inc.1,740$376.8K0.08%−95−5.2%Reduced
HM Payson & Co1,741$377.1K0.01%+488+38.9%Added
Gryphon Financial Partners LLC1,742$377.2K0.04%+1,742New
Summit Financial, LLC1,744$377.8K0.00%+220+14.4%Added
Boston Common Asset Management, LLC1,748$378.6K0.02%00.0%Unchanged
Circle Wealth Management, LLC1,751$379.2K0.01%+1,751New
Shelton Capital Management1,756$380.3K0.01%00.0%Unchanged
Mitchell Sinkler & Starr1,760$381.2K0.18%00.0%Unchanged
Rothschild Investment LLC1,768$383.0K0.02%+50+2.9%Added
McGlone Suttner Wealth Management, Inc.1,771$383.6K0.05%+15+0.9%Added
Fidelis Capital Partners, LLC1,781$385.7K0.03%−49−2.7%Reduced
NewEdge Wealth, LLC1,784$386.3K0.00%−2,196−55.2%Reduced
Frontier Capital Management Co LLC1,789$387.5K0.00%+1,789New
Generali Asset Management SPA SGR1,803$390.5K0.01%−473−20.8%Reduced
Livforsakringsbolaget Skandia, Omsesidigt1,806$391.1K0.02%00.0%Unchanged
OneAscent Investment Solutions LLC1,818$393.7K0.39%−71−3.8%Reduced
Archford Capital Strategies, LLC1,828$395.9K0.05%+22+1.2%Added
Oppenheimer Asset Management Inc.1,838$398.1K0.00%−20,501−91.8%Reduced
Avantra Family Wealth, Inc.1,854$401.5K0.30%+1,854New
Rockland Trust Co1,876$406.3K0.02%+177+10.4%Added
Snowden Capital Advisors LLC1,881$407.3K0.01%−758−28.7%Reduced
Green Harvest Asset Management LLC1,889$409.1K0.01%+797+73.0%Added
Northside Capital Management, LLC1,891$409.6K0.04%00.0%Unchanged
Shepherd Street Advisors LLC1,927$417.4K0.41%−238−11.0%Reduced
CSU Producer Resources, Inc.1,927$417.4K1.20%00.0%Unchanged
Horizon Kinetics Asset Management LLC1,953$423.0K0.00%00.0%Unchanged
Erste Asset Management GmbH1,974$426.3K0.00%00.0%Unchanged
Headlands Technologies LLC1,979$428.6K0.05%+1,979New
Crawford Investment Counsel Inc1,980$428.8K0.01%00.0%Unchanged
Banco Santander, S.A.1,983$429.5K0.00%00.0%Unchanged
Master's Wealth Management Inc.1,996$432.3K0.15%−1,121−36.0%Reduced
Clifford Group, LLC1,999$432.9K0.33%−157−7.3%Reduced
Montchanin Asset Management, LLC2,000$433.0K0.46%+2,000New
Bank of New Hampshire2,000$433.2K0.10%00.0%Unchanged
Bayban2,000$433.2K0.38%00.0%Unchanged
Dynamic Technology Lab Private Ltd2,004$434.0K0.07%+2,004New
GeoWealth Management, LLC2,009$435.3K0.02%+265+15.2%Added
SCS Capital Management LLC2,022$438.0K0.00%−315−13.5%Reduced
Adviser Investments LLC2,023$438.2K0.00%−814−28.7%Reduced
Balentine LLC2,044$442.7K0.02%+2,044New
Vestor Capital, LLC2,045$443.0K0.03%−1,634−44.4%Reduced
Allred Capital Management, LLC2,046$443.3K0.16%+11+0.5%Added