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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: 1,342 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 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 20251,342$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, 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
GWM Advisors LLC208,890$64.7M0.29%−418−0.2%Reduced
SEI Investments Co204,836$63.5M0.07%−179,986−46.8%Reduced
Citigroup Inc202,521$62.7M0.04%−51,927−20.4%Reduced
Retirement Systems of Alabama201,076$62.3M0.21%+23,433+13.2%Added
Aviva PLC198,056$61.3M0.11%−64,944−24.7%Reduced
Millennium Management LLC195,826$60.7M0.05%−212,992−52.1%Reduced
Old Republic International Corporation190,800$59.1M2.19%00.0%Unchanged
King Luther Capital Management Corp188,346$58.3M0.24%−34,426−15.5%Reduced
Stifel Financial Corp184,806$57.2M0.05%−30,969−14.4%Reduced
Standard Life Aberdeen plc186,425$57.0M0.09%+46,629+33.4%Added
Cincinnati Insurance Co183,710$56.9M0.88%+183,710New
Gateway Investment Advisers LLC183,496$56.8M0.55%+240.0%Added
Employees Retirement System of Texas177,100$54.9M0.44%−37,500−17.5%Reduced
New York State Teachers Retirement System176,605$54.7M0.11%−470.0%Reduced
Fiera Capital Corp175,945$54.5M0.18%+175,945New
MML Investors Services, LLC175,907$54.5M0.15%−6,867−3.8%Reduced
Storebrand Asset Management AS169,748$52.6M0.14%+2,233+1.3%Added
Mitsubishi UFJ Trust & Banking Corp161,976$50.2M0.11%−13,844−7.9%Reduced
Ci Investments Inc.158,723$49.2M0.18%−240,854−60.3%Reduced
Clark Capital Management Group, Inc.157,699$48.8M0.31%+2,396+1.5%Added
Federation des caisses Desjardins du Quebec156,983$48.6M0.19%+21,453+15.8%Added
KBC Group NV156,714$48.5M0.12%+9,752+6.6%Added
Bank of Nova Scotia156,239$48.4M0.09%+129,686+488.4%Added
Danske Bank A/S151,970$47.1M0.12%−79,372−34.3%Reduced
Royal London Asset Management Ltd150,584$46.6M0.10%−1,586−1.0%Reduced
Woodley Farra Manion Portfolio Management Inc150,286$46.5M2.19%−120,655−44.5%Reduced
Korea Investment CORP148,786$46.1M0.09%+7,111+5.0%Added
United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund146,105$45.3M1.65%00.0%Unchanged
AQR Capital Management LLC146,664$45.1M0.03%+12,161+9.0%Added
Fort Washington Investment Advisors Inc145,220$45.0M0.24%+12,418+9.4%Added
Moore Capital Management, LP145,184$45.0M0.89%+16,752+13.0%Added
British Columbia Investment Management Corp145,171$45.0M0.26%−3,367−2.3%Reduced
Prudential Financial Inc144,329$44.7M0.05%−14,138−8.9%Reduced
Anchor Capital Advisors LLC144,228$44.7M1.29%+20,072+16.2%Added
Beacon Pointe Advisors, LLC141,074$43.7M0.37%+953+0.7%Added
Cincinnati Financial Corp138,259$42.8M0.85%+138,259New
Voya Investment Management LLC136,476$42.3M0.04%−572,914−80.8%Reduced
State of Wisconsin Investment Board136,177$42.2M0.10%−7,935−5.5%Reduced
National Bank of Canada135,271$41.9M0.05%−62,305−31.5%Reduced
Chevy Chase Trust Holdings, Inc.130,885$40.5M0.11%−4,485−3.3%Reduced
Benjamin Edwards Inc129,719$40.2M0.45%+4,264+3.4%Added
Premier Fund Managers Ltd130,761$40.0M1.64%+217+0.2%Added
Oribel Capital Management, LP128,700$39.9M4.66%+128,700New
Sequoia Financial Advisors, LLC127,661$39.5M0.24%+5,878+4.8%Added
Toronto Dominion Bank126,377$39.1M0.08%−10,119−7.4%Reduced
Cullen/Frost Bankers, Inc.126,071$39.0M0.45%−3,205−2.5%Reduced
Dearborn Partners LLC125,990$39.0M1.83%+1,100+0.9%Added
ASR Vermogensbeheer N.V.123,553$38.3M0.46%+4,994+4.2%Added
Campbell Newman Asset Management Inc123,392$38.2M2.79%+2,512+2.1%Added
Macquarie Group Ltd122,052$37.8M0.04%+1,593+1.3%Added
Advisor Group Holdings, Inc.114,991$35.5M0.05%+70,774+160.1%Added
Treasurer of the State of North Carolina114,019$35.3M0.11%−4,448−3.8%Reduced
Blair William & Co113,753$35.2M0.09%−3,216−2.7%Reduced
Asset Management One Co.,Ltd.113,750$35.2M0.10%+1,786+1.6%Added
Captrust Financial Advisors113,289$35.1M0.07%+203+0.2%Added
Ferguson Wellman Capital Management, Inc112,921$35.0M0.57%+942+0.8%Added
Truist Financial Corp112,608$34.9M0.05%+1,610+1.5%Added
Citadel Advisors LLC111,218$34.4M0.03%+80,522+262.3%Added
Freestone Grove Partners LP110,811$34.3M0.26%−104,254−48.5%Reduced
Pictet Asset Management Holding SA109,580$33.9M0.03%−15,519−12.4%Reduced
Tredje AP-fonden109,212$33.8M0.27%+30,000+37.9%Added
Thomasville National Bank108,348$33.6M2.11%+1,126+1.1%Added
Sandhill Capital Partners LLC108,253$33.5M2.34%+108,253New
DekaBank Deutsche Girozentrale109,639$33.4M0.06%00.0%Unchanged
Cetera Investment Advisers106,425$33.0M0.04%+28,672+36.9%Added
Visualize Group LP106,294$32.9M11.03%+106,294New
Bowie Capital Management, LLC106,196$32.9M1.48%+106,196New
Natixis105,326$32.6M0.18%+64,825+160.1%Added
Central Securities Corp105,000$32.5M2.68%00.0%Unchanged
Capital International Sarl103,449$32.0M0.55%+4,092+4.1%Added
Investment Management Corp of Ontario102,052$31.6M0.48%+20,816+25.6%Added
Quantinno Capital Management LP101,816$31.5M0.09%+24,793+32.2%Added
Public Employees Retirement System of Ohio101,302$31.4M0.10%−2,132−2.1%Reduced
Mercer Global Advisors Inc100,720$31.2M0.05%+60,922+153.1%Added
Resona Asset Management Co.,Ltd.99,951$30.9M0.15%−5,133−4.9%Reduced
Marshall Wace, LLP99,597$30.8M0.03%−47,541−32.3%Reduced
Cornerstone Capital, Inc.98,038$30.4M2.97%−2,148−2.1%Reduced
Mn Services Vermogensbeheer B.V.96,710$30.0M0.19%+1,100+1.2%Added
Schroder Investment Management Group95,265$29.5M0.02%−26,726−21.9%Reduced
Annex Advisory Services, LLC95,153$29.5M0.63%+18,156+23.6%Added
Swedbank AB93,691$29.0M0.03%+1,749+1.9%Added
Canada Pension Plan Investment Board93,261$28.9M0.02%+13,592+17.1%Added
KLP Kapitalforvaltning AS92,310$28.6M0.11%+1,900+2.1%Added
Fisher Funds Management LTD92,078$28.5M0.75%+26,612+40.7%Added
Sonora Investment Management Group, LLC91,858$28.5M2.02%−969−1.0%Reduced
BNP Paribas91,053$28.0M0.85%+8,028+9.7%Added
The PNC Financial Services Group, Inc.90,375$28.0M0.02%+3,229+3.7%Added
State of New Jersey Common Pension Fund D89,544$27.7M0.10%+3,795+4.4%Added
Chilton Capital Management LLC88,664$27.5M0.93%−683−0.8%Reduced
Calamos Advisors LLC88,636$27.5M0.11%00.0%Unchanged
Van Hulzen Asset Management, LLC88,445$27.4M2.04%+5,323+6.4%Added
State of Tennessee, Treasury Department85,840$26.6M0.09%−3,171−3.6%Reduced
United Capital Financial Advisers, LLC85,730$26.6M0.19%+42,094+96.5%Added
Rafferty Asset Management, LLC85,314$26.4M0.09%+165+0.2%Added
Victory Capital Management Inc84,395$26.1M0.02%−206−0.2%Reduced
Zurcher Kantonalbank (Zurich Cantonalbank)82,899$25.7M0.06%+8,709+11.7%Added
Cumberland Partners Ltd82,593$25.6M1.67%−901−1.1%Reduced
ARS Investment Partners, LLC81,897$25.4M1.67%−2,315−2.7%Reduced
Lansforsakringar Fondforvaltning AB (publ)81,364$25.2M0.13%+2,697+3.4%Added
US Bancorp80,803$25.0M0.03%−1,770−2.1%Reduced