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Livermore
ZHEN

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: 1,359 institutionsQ2 2025: 1,379 institutionsQ3 2025: 1,341 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 20251,341$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, 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
Huntington National Bank2,446$529.8K0.00%+65+2.7%Added
Citizens Financial Group Inc2,394$518.4K0.01%−1,282−34.9%Reduced
Cigna Investments Inc2,394$518.0K0.08%−97−3.9%Reduced
Invesco, LLC2,370$513.3K0.18%+591+33.2%Added
Bryn Mawr Trust Co2,368$512.9K0.01%+1,555+191.3%Added
Heritage Wealth Advisors2,346$508.1K0.02%−4,341−64.9%Reduced
Perbak Capital Partners LLP2,344$507.7K0.12%+2,344New
Tyche Wealth Partners LLC2,338$506.4K0.08%+565+31.9%Added
Choate Investment Advisors2,330$504.6K0.01%−6−0.3%Reduced
Dorsey & Whitney Trust CO LLC2,315$501.4K0.03%−208−8.2%Reduced
Mount Yale Investment Advisors, LLC2,315$501.4K0.01%+2,315New
Montag A & Associates Inc2,300$498.1K0.02%00.0%Unchanged
Phocas Financial Corp.2,300$498.1K0.08%00.0%Unchanged
Ameritas Investment Partners, Inc.2,298$497.7K0.02%00.0%Unchanged
Checchi Capital Advisers, LLC2,295$497.1K0.03%+221+10.7%Added
GTS Securities LLC2,293$496.6K0.02%−1,610−41.3%Reduced
Johnson Investment Counsel Inc2,286$495.1K0.00%+263+13.0%Added
Foundation Wealth Management, LLC2,277$493.2K0.17%+6+0.3%Added
First National Bank of Omaha2,277$491.7K0.02%00.0%Unchanged
Advyzon Investment Management, LLC2,251$487.5K0.04%+791+54.2%Added
Live Oak Private Wealth LLC2,245$486.2K0.07%−78−3.4%Reduced
AlTi Global, Inc.2,241$485.4K0.01%+34+1.5%Added
Aventura Private Wealth, LLC2,233$483.5K0.18%−119−5.1%Reduced
Smithfield Trust Co2,224$480.0K0.02%+101+4.8%Added
Profund Advisors LLC2,216$479.9K0.02%−457−17.1%Reduced
Texas Capital Bank Wealth Management Services Inc2,202$476.9K0.03%−19−0.9%Reduced
Catalytic Wealth RIA, LLC2,196$475.6K0.02%−71−3.1%Reduced
Jump Financial, LLC2,193$475.0K0.01%+719+48.8%Added
Smartleaf Asset Management LLC2,195$474.0K0.02%+35+1.6%Added
Congress Asset Management Co2,174$470.9K0.00%−4,211−66.0%Reduced
Ronald Blue Trust, Inc.2,164$468.5K0.01%−577−21.1%Reduced
Allen Capital Group, LLC2,161$468.0K0.04%+266+14.0%Added
Mutual Advisors, LLC2,159$467.6K0.01%−68−3.1%Reduced
StoneX Group Inc.2,150$465.7K0.03%−1,214−36.1%Reduced
Eastern Bank2,150$465.6K0.01%−20,023−90.3%Reduced
Ingalls & Snyder LLC2,145$465.0K0.02%+35+1.7%Added
Garde Capital, Inc.2,139$463.3K0.03%00.0%Unchanged
Sun Financial Inc2,340$462.6K0.23%+34+1.5%Added
Colonial Trust Advisors2,110$457.0K0.04%00.0%Unchanged
Pathway Financial Advisors LLC2,100$457.0K0.06%00.0%Unchanged
Bokf, NA2,101$455.0K0.01%+558+36.2%Added
Mission Wealth Management, LP2,090$452.7K0.01%−379−15.4%Reduced
Lantz Financial LLC2,080$450.5K0.09%+3+0.1%Added
Paragon Private Wealth Management, LLC2,078$450.0K0.14%−210−9.2%Reduced
Fosun International Ltd2,075$449.4K0.11%00.0%Unchanged
RiverGlades Family Offices LLC2,057$445.4K0.26%+2,057New
Brevan Howard Capital Management LP2,053$444.6K0.00%+2,053New
Central Pacific Bank - Trust Division2,050$444.0K0.06%+1,565+322.7%Added
Allred Capital Management, LLC2,046$443.3K0.16%+11+0.5%Added
Vestor Capital, LLC2,045$443.0K0.03%−1,634−44.4%Reduced
Balentine LLC2,044$442.7K0.02%+2,044New
Adviser Investments LLC2,023$438.2K0.00%−814−28.7%Reduced
SCS Capital Management LLC2,022$438.0K0.00%−315−13.5%Reduced
GeoWealth Management, LLC2,009$435.3K0.02%+265+15.2%Added
Dynamic Technology Lab Private Ltd2,004$434.0K0.07%+2,004New
Bank of New Hampshire2,000$433.2K0.10%00.0%Unchanged
Bayban2,000$433.2K0.38%00.0%Unchanged
Montchanin Asset Management, LLC2,000$433.0K0.46%+2,000New
Clifford Group, LLC1,999$432.9K0.33%−157−7.3%Reduced
Master's Wealth Management Inc.1,996$432.3K0.15%−1,121−36.0%Reduced
Banco Santander, S.A.1,983$429.5K0.00%00.0%Unchanged
Crawford Investment Counsel Inc1,980$428.8K0.01%00.0%Unchanged
Headlands Technologies LLC1,979$428.6K0.05%+1,979New
Erste Asset Management GmbH1,974$426.3K0.00%00.0%Unchanged
Horizon Kinetics Asset Management LLC1,953$423.0K0.00%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
Northside Capital Management, LLC1,891$409.6K0.04%00.0%Unchanged
Green Harvest Asset Management LLC1,889$409.1K0.01%+797+73.0%Added
Snowden Capital Advisors LLC1,881$407.3K0.01%−758−28.7%Reduced
Rockland Trust Co1,876$406.3K0.02%+177+10.4%Added
Avantra Family Wealth, Inc.1,854$401.5K0.30%+1,854New
Oppenheimer Asset Management Inc.1,838$398.1K0.00%−20,501−91.8%Reduced
Archford Capital Strategies, LLC1,828$395.9K0.05%+22+1.2%Added
OneAscent Investment Solutions LLC1,818$393.7K0.39%−71−3.8%Reduced
Livforsakringsbolaget Skandia, Omsesidigt1,806$391.1K0.02%00.0%Unchanged
Generali Asset Management SPA SGR1,803$390.5K0.01%−473−20.8%Reduced
Frontier Capital Management Co LLC1,789$387.5K0.00%+1,789New
NewEdge Wealth, LLC1,784$386.3K0.00%−2,196−55.2%Reduced
Fidelis Capital Partners, LLC1,781$385.7K0.03%−49−2.7%Reduced
McGlone Suttner Wealth Management, Inc.1,771$383.6K0.05%+15+0.9%Added
Rothschild Investment LLC1,768$383.0K0.02%+50+2.9%Added
Mitchell Sinkler & Starr1,760$381.2K0.18%00.0%Unchanged
Shelton Capital Management1,756$380.3K0.01%00.0%Unchanged
Circle Wealth Management, LLC1,751$379.2K0.01%+1,751New
Boston Common Asset Management, LLC1,748$378.6K0.02%00.0%Unchanged
Summit Financial, LLC1,744$377.8K0.00%+220+14.4%Added
Gryphon Financial Partners LLC1,742$377.2K0.04%+1,742New
HM Payson & Co1,741$377.1K0.01%+488+38.9%Added
Mission Creek Capital Partners, Inc.1,740$376.8K0.08%−95−5.2%Reduced
Supplemental Annuity Collective Trust of NJ1,739$376.6K0.11%+1,739New
Havemeyer Place LP1,735$375.8K0.04%+1,735New
Aaron Wealth Advisors1,716$371.7K0.02%+54+3.2%Added
CX Institutional1,715$371.0K0.01%−283−14.2%Reduced
Sapient Capital LLC1,709$370.1K0.01%+1,709New
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
Dynamic Advisor Solutions LLC1,706$369.5K0.01%−39−2.2%Reduced
Private Advisory Group LLC1,704$369.1K0.03%−862−33.6%Reduced
Ritholtz Wealth Management1,697$367.5K0.01%−8,364−83.1%Reduced