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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, Q3 2025

Institutional positions in Arthur J. Gallagher & Co. as of Sep 30, 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
1,341
−21 vs. Q2 2025
Shares held
225.4M
+2.22M (+1.0%) vs. Q2 2025
Total value
$69.7B
−$1.65B (−2.3%) vs. Q2 2025
New holders
115
511 more added
Sold out
136
487 more reduced

17 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2025: 1,341 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 heldQ3 2025: $69.7B
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, Q3 2025

Shares, value and share of portfolio for each institution holding Arthur J. Gallagher & Co.; share changes are against Q2 2025.

Institutions holding AJG in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Capital International Ltd55,933$17.3M0.63%+943+1.7%Added
D. Scott Neal, Inc.56,663$17.6M8.12%−951−1.7%Reduced
CIBC Asset Management Inc56,769$17.6M0.05%−7,614−11.8%Reduced
Daiwa Securities Group Inc.57,241$17.7M0.06%+2,257+4.1%Added
Healthcare of Ontario Pension Plan Trust Fund57,649$17.9M0.03%−169,154−74.6%Reduced
Ensign Peak Advisors, Inc58,290$18.1M0.03%+5,862+11.2%Added
STRS Ohio59,781$18.5M0.07%−42,553−41.6%Reduced
Mackenzie Financial Corp60,438$18.7M0.02%−49,119−44.8%Reduced
Mariner, LLC60,717$18.8M0.02%−3,325−5.2%Reduced
Commonwealth of Pennsylvania Public School Empls Retrmt Sys61,562$19.1M0.10%−1,248−2.0%Reduced
Alley Investment Management Company, LLC62,558$19.4M2.25%+1,048+1.7%Added
Vident Advisory, LLC62,808$19.5M0.19%+12,669+25.3%Added
Lawson Kroeker Investment Management Inc63,168$19.6M3.57%−3,125−4.7%Reduced
Janney Montgomery Scott LLC63,368$19.6M0.05%+339+0.5%Added
MetLife Investment Management64,291$19.9M0.10%−1,625−2.5%Reduced
Czech National Bank65,111$20.2M0.14%+2,512+4.0%Added
Nisa Investment Advisors, LLC65,484$20.3M0.08%−213−0.3%Reduced
Mirae Asset Global Investments Co., Ltd.65,688$20.3M0.06%+8,346+14.6%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.65,789$20.4M0.05%−37,543−36.3%Reduced
Banco Bilbao Vizcaya Argentaria, S.A.65,889$20.4M0.16%+6,090+10.2%Added
HighTower Advisors, LLC66,340$20.6M0.02%+8,401+14.5%Added
11 Capital Partners LP67,074$20.8M5.88%−1,390−2.0%Reduced
North Point Portfolio Managers Corp67,330$20.9M3.45%−546−0.8%Reduced
Bristlecone Advisors, LLC67,794$21.0M1.75%00.0%Unchanged
Ilmarinen Mutual Pension Insurance Co68,100$21.1M0.16%00.0%Unchanged
Forsta Ap-Fonden68,700$21.3M0.13%+2,700+4.1%Added
Envestnet Portfolio Solutions, Inc.69,185$21.4M0.08%−2,749−3.8%Reduced
State of Michigan Retirement System69,287$21.5M0.10%−300−0.4%Reduced
Professional Advisory Services Inc69,909$21.7M2.82%+5,300+8.2%Added
Public Sector Pension Investment Board71,304$22.1M0.08%+18,637+35.4%Added
Creative Planning72,012$22.3M0.02%+2,772+4.0%Added
Assetmark, Inc73,272$22.7M0.05%+32,705+80.6%Added
Arizona State Retirement System74,852$23.2M0.12%+90+0.1%Added
Ceredex Value Advisors LLC74,900$23.2M0.54%+74,900New
Mountain Pacific Investment Advisers Inc74,916$23.2M3.63%−101,061−57.4%Reduced
Baltimore-Washington Financial Advisors, Inc.75,734$23.5M1.01%+4,798+6.8%Added
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund75,994$23.5M0.20%−1,300−1.7%Reduced
Baldwin Brothers Inc76,829$23.8M1.55%−1,888−2.4%Reduced
Philo Smith Capital Corp77,725$24.1M6.69%00.0%Unchanged
Wealth Enhancement Advisory Services, LLC78,522$24.3M0.04%+18,861+31.6%Added
Handelsbanken Fonder AB79,268$24.6M0.08%+1,853+2.4%Added
US Bancorp80,803$25.0M0.03%−1,770−2.1%Reduced
Lansforsakringar Fondforvaltning AB (publ)81,364$25.2M0.13%+2,697+3.4%Added
ARS Investment Partners, LLC81,897$25.4M1.67%−2,315−2.7%Reduced
Cumberland Partners Ltd82,593$25.6M1.67%−901−1.1%Reduced
Zurcher Kantonalbank (Zurich Cantonalbank)82,899$25.7M0.06%+8,709+11.7%Added
Victory Capital Management Inc84,395$26.1M0.02%−206−0.2%Reduced
Rafferty Asset Management, LLC85,314$26.4M0.09%+165+0.2%Added
United Capital Financial Advisers, LLC85,730$26.6M0.19%+42,094+96.5%Added
State of Tennessee, Treasury Department85,840$26.6M0.09%−3,171−3.6%Reduced
Van Hulzen Asset Management, LLC88,445$27.4M2.04%+5,323+6.4%Added
Calamos Advisors LLC88,636$27.5M0.11%00.0%Unchanged
Chilton Capital Management LLC88,664$27.5M0.93%−683−0.8%Reduced
State of New Jersey Common Pension Fund D89,544$27.7M0.10%+3,795+4.4%Added
The PNC Financial Services Group, Inc.90,375$28.0M0.02%+3,229+3.7%Added
BNP Paribas91,053$28.0M0.85%+8,028+9.7%Added
Sonora Investment Management Group, LLC91,858$28.5M2.02%−969−1.0%Reduced
Fisher Funds Management LTD92,078$28.5M0.75%+26,612+40.7%Added
KLP Kapitalforvaltning AS92,310$28.6M0.11%+1,900+2.1%Added
Canada Pension Plan Investment Board93,261$28.9M0.02%+13,592+17.1%Added
Swedbank AB93,691$29.0M0.03%+1,749+1.9%Added
Annex Advisory Services, LLC95,153$29.5M0.63%+18,156+23.6%Added
Schroder Investment Management Group95,265$29.5M0.02%−26,726−21.9%Reduced
Mn Services Vermogensbeheer B.V.96,710$30.0M0.19%+1,100+1.2%Added
Cornerstone Capital, Inc.98,038$30.4M2.97%−2,148−2.1%Reduced
Marshall Wace, LLP99,597$30.8M0.03%−47,541−32.3%Reduced
Resona Asset Management Co.,Ltd.99,951$30.9M0.15%−5,133−4.9%Reduced
Mercer Global Advisors Inc100,720$31.2M0.05%+60,922+153.1%Added
Public Employees Retirement System of Ohio101,302$31.4M0.10%−2,132−2.1%Reduced
Quantinno Capital Management LP101,816$31.5M0.09%+24,793+32.2%Added
Investment Management Corp of Ontario102,052$31.6M0.48%+20,816+25.6%Added
Capital International Sarl103,449$32.0M0.55%+4,092+4.1%Added
Central Securities Corp105,000$32.5M2.68%00.0%Unchanged
Natixis105,326$32.6M0.18%+64,825+160.1%Added
Bowie Capital Management, LLC106,196$32.9M1.48%+106,196New
Visualize Group LP106,294$32.9M11.03%+106,294New
Cetera Investment Advisers106,425$33.0M0.04%+28,672+36.9%Added
DekaBank Deutsche Girozentrale109,639$33.4M0.06%00.0%Unchanged
Sandhill Capital Partners LLC108,253$33.5M2.34%+108,253New
Thomasville National Bank108,348$33.6M2.11%+1,126+1.1%Added
Tredje AP-fonden109,212$33.8M0.27%+30,000+37.9%Added
Pictet Asset Management Holding SA109,580$33.9M0.03%−15,519−12.4%Reduced
Freestone Grove Partners LP110,811$34.3M0.26%−104,254−48.5%Reduced
Citadel Advisors LLC111,218$34.4M0.03%+80,522+262.3%Added
Truist Financial Corp112,608$34.9M0.05%+1,610+1.5%Added
Ferguson Wellman Capital Management, Inc112,921$35.0M0.57%+942+0.8%Added
Captrust Financial Advisors113,289$35.1M0.07%+203+0.2%Added
Asset Management One Co.,Ltd.113,750$35.2M0.10%+1,786+1.6%Added
Blair William & Co113,753$35.2M0.09%−3,216−2.7%Reduced
Treasurer of the State of North Carolina114,019$35.3M0.11%−4,448−3.8%Reduced
Advisor Group Holdings, Inc.114,991$35.5M0.05%+70,774+160.1%Added
Macquarie Group Ltd122,052$37.8M0.04%+1,593+1.3%Added
Campbell Newman Asset Management Inc123,392$38.2M2.79%+2,512+2.1%Added
ASR Vermogensbeheer N.V.123,553$38.3M0.46%+4,994+4.2%Added
Dearborn Partners LLC125,990$39.0M1.83%+1,100+0.9%Added
Cullen/Frost Bankers, Inc.126,071$39.0M0.45%−3,205−2.5%Reduced
Toronto Dominion Bank126,377$39.1M0.08%−10,119−7.4%Reduced
Sequoia Financial Advisors, LLC127,661$39.5M0.24%+5,878+4.8%Added
Oribel Capital Management, LP128,700$39.9M4.66%+128,700New
Premier Fund Managers Ltd130,761$40.0M1.64%+217+0.2%Added