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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: 1,360 institutionsQ2 2025: 1,380 institutionsQ3 2025: 1,342 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 20251,342$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, 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
Retirement Systems of Alabama201,020$52.0M0.17%−560.0%Reduced
Comerica Bank198,341$51.3M0.20%−23,884−10.7%Reduced
King Luther Capital Management Corp196,064$50.7M0.21%+7,718+4.1%Added
Great West Life Assurance Co193,341$50.1M0.09%−73,975−27.7%Reduced
Old Republic International Corporation190,800$49.4M1.99%00.0%Unchanged
Cincinnati Financial Corp186,259$48.2M0.94%+48,000+34.7%Added
Standard Life Aberdeen plc184,399$47.7M0.07%−2,026−1.1%Reduced
Gateway Investment Advisers LLC184,154$47.7M0.44%+658+0.4%Added
Cincinnati Insurance Co183,710$47.5M0.73%00.0%Unchanged
Stifel Financial Corp182,454$47.2M0.04%−2,352−1.3%Reduced
MML Investors Services, LLC177,329$45.9M0.11%+1,422+0.8%Added
New York State Teachers Retirement System176,619$45.7M0.09%+140.0%Added
Fort Washington Investment Advisors Inc176,568$45.7M0.24%+31,348+21.6%Added
Nomura Asset Management Co Ltd175,016$45.3M0.11%−213,464−54.9%Reduced
Employees Retirement System of Texas174,000$45.0M0.37%−3,100−1.8%Reduced
D. E. Shaw & Co., Inc.173,498$44.9M0.03%+139,108+404.5%Added
Toronto Dominion Bank163,555$42.3M0.07%+37,178+29.4%Added
Ceredex Value Advisors LLC163,317$42.3M1.27%+88,417+118.0%Added
Benjamin Edwards Inc162,213$42.0M0.46%+32,494+25.0%Added
Fiera Capital Corp160,603$41.6M0.13%−15,342−8.7%Reduced
Adage Capital Partners GP, L.L.C.159,803$41.4M0.06%−133,300−45.5%Reduced
Mercer Global Advisors Inc155,398$40.4M0.06%+54,678+54.3%Added
Pictet Asset Management Holding SA154,404$40.0M0.04%+44,824+40.9%Added
Woodley Farra Manion Portfolio Management Inc152,604$39.5M1.88%+2,318+1.5%Added
Storebrand Asset Management AS152,296$39.4M0.11%−17,452−10.3%Reduced
Danske Bank A/S151,760$39.3M0.09%−210−0.1%Reduced
Capital International Sarl151,289$39.2M0.63%+47,840+46.2%Added
AQR Capital Management LLC147,798$38.2M0.02%+1,134+0.8%Added
Royal London Asset Management Ltd147,765$38.2M0.08%−2,819−1.9%Reduced
Anchor Capital Advisors LLC145,548$37.7M1.09%+1,320+0.9%Added
Mitsubishi UFJ Trust & Banking Corp145,179$37.6M0.09%−16,797−10.4%Reduced
ASR Vermogensbeheer N.V.145,001$37.5M0.44%+21,448+17.4%Added
KBC Group NV143,679$37.2M0.08%−13,035−8.3%Reduced
Sandhill Capital Partners LLC142,909$37.0M2.63%+34,656+32.0%Added
Eventide Asset Management, LLC139,874$36.2M0.57%−76,819−35.5%Reduced
Fisher Funds Management LTD137,840$36.0M0.93%+45,762+49.7%Added
Voya Investment Management LLC136,262$35.3M0.03%−214−0.2%Reduced
Massachusetts Financial Services Co134,912$34.9M0.01%−1,198,267−89.9%Reduced
State of Wisconsin Investment Board134,709$34.9M0.08%−1,468−1.1%Reduced
Dearborn Partners LLC133,936$34.7M1.73%+7,946+6.3%Added
Sequoia Financial Advisors, LLC132,594$34.3M0.19%+4,933+3.9%Added
Chevy Chase Trust Holdings, Inc.131,099$33.9M0.09%+214+0.2%Added
Asset Management One Co.,Ltd.127,525$33.5M0.09%+13,775+12.1%Added
Prudential Financial Inc126,160$32.6M0.04%−18,169−12.6%Reduced
Campbell Newman Asset Management Inc121,432$31.4M2.30%−1,960−1.6%Reduced
Prana Capital Management, LP119,211$30.9M1.12%+119,211New
Korea Investment CORP117,210$30.3M0.06%−31,576−21.2%Reduced
Quantinno Capital Management LP117,057$30.3M0.06%+15,241+15.0%Added
United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund116,985$30.3M0.42%−29,120−19.9%Reduced
Investment Management Corp of Ontario112,834$29.2M0.39%+10,782+10.6%Added
Captrust Financial Advisors111,309$28.8M0.05%−1,980−1.7%Reduced
Tredje AP-fonden109,212$28.3M0.21%00.0%Unchanged
Thomasville National Bank109,058$28.2M1.75%+710+0.7%Added
DekaBank Deutsche Girozentrale109,639$28.2M0.05%00.0%Unchanged
Truist Financial Corp108,143$28.0M0.04%−4,465−4.0%Reduced
Cullen/Frost Bankers, Inc.107,158$27.7M0.31%−18,913−15.0%Reduced
Premier Fund Managers Ltd105,503$27.6M1.59%−25,258−19.3%Reduced
Treasurer of the State of North Carolina106,254$27.5M0.09%−7,765−6.8%Reduced
Zurcher Kantonalbank (Zurich Cantonalbank)105,558$27.3M0.06%+22,659+27.3%Added
State of Tennessee, Treasury Department109,468$27.3M0.09%+23,628+27.5%Added
Central Securities Corp105,000$27.2M2.18%00.0%Unchanged
CIBC Private Wealth Group, LLC104,629$27.1M0.05%−169,030−61.8%Reduced
Nissay Asset Management Corp104,077$26.9M0.14%−168,450−61.8%Reduced
Annex Advisory Services, LLC102,631$26.6M0.51%+7,478+7.9%Added
Public Employees Retirement System of Ohio101,233$26.2M0.08%−69−0.1%Reduced
Beacon Pointe Advisors, LLC100,847$26.1M0.18%−40,227−28.5%Reduced
Mn Services Vermogensbeheer B.V.98,621$25.5M0.16%+1,911+2.0%Added
CI Private Wealth, LLC98,193$25.4M0.03%+54,639+125.5%Added
Cornerstone Capital, Inc.98,145$25.4M2.50%+107+0.1%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.96,163$24.9M0.03%+30,374+46.2%Added
Van Hulzen Asset Management, LLC95,470$24.7M1.81%+7,025+7.9%Added
Schroder Investment Management Group94,599$24.5M0.02%−666−0.7%Reduced
Swedbank AB93,323$24.2M0.02%−368−0.4%Reduced
BNP Paribas92,682$24.0M0.69%+1,629+1.8%Added
Nomura Asset Management International Inc.92,083$23.8M0.04%+92,083New
Resona Asset Management Co.,Ltd.91,323$23.7M0.11%−8,628−8.6%Reduced
Barlow Wealth Partners, Inc.88,580$23.4M2.53%+88,580New
KLP Kapitalforvaltning AS90,490$23.4M0.09%−1,820−2.0%Reduced
Cetera Investment Advisers90,383$23.4M0.03%−16,042−15.1%Reduced
Connor, Clark & Lunn Investment Management Ltd.89,423$23.1M0.06%+82,050+1,112.8%Added
Blair William & Co88,738$23.0M0.06%−25,015−22.0%Reduced
State of New Jersey Common Pension Fund D88,298$22.9M0.08%−1,246−1.4%Reduced
Philo Smith Capital Corp87,725$22.7M6.24%+10,000+12.9%Added
The PNC Financial Services Group, Inc.86,933$22.5M0.01%−3,442−3.8%Reduced
Handelsbanken Fonder AB86,431$22.4M0.07%+7,163+9.0%Added
Creative Planning86,321$22.3M0.02%+14,309+19.9%Added
Calamos Advisors LLC85,528$22.1M0.09%−3,108−3.5%Reduced
Victory Capital Management Inc85,481$22.1M0.01%+1,086+1.3%Added
CIBC Asset Management Inc84,551$21.9M0.05%+27,782+48.9%Added
Marshall Wace, LLP84,329$21.8M0.02%−15,268−15.3%Reduced
ARS Investment Partners, LLC82,754$21.4M1.25%+857+1.0%Added
Lansforsakringar Fondforvaltning AB (publ)82,234$21.3M0.11%+870+1.1%Added
Capital International Ltd81,007$21.0M0.74%+25,074+44.8%Added
United Capital Financial Advisers, LLC80,591$20.9M0.13%−5,139−6.0%Reduced
Wealth Enhancement Advisory Services, LLC78,590$20.7M0.03%+68+0.1%Added
Canada Pension Plan Investment Board79,515$20.6M0.01%−13,746−14.7%Reduced
Professional Advisory Services Inc78,448$20.3M2.63%+8,539+12.2%Added
Rafferty Asset Management, LLC78,346$20.3M0.07%−6,968−8.2%Reduced
US Bancorp78,277$20.3M0.02%−2,526−3.1%Reduced
STRS Ohio77,216$20.0M0.07%+17,435+29.2%Added