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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: 1,359 institutionsQ2 2025: 1,379 institutionsQ3 2025: 1,341 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 20251,341$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, 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
Nixon Peabody Trust Co34,155$8.84M0.67%+32,431+1,881.1%Added
Rakuten Investment Management, Inc.33,765$8.88M0.03%−6,194−15.5%Reduced
Rathbone Brothers plc34,349$8.89M0.03%−50−0.1%Reduced
CAPROCK Group, Inc.34,445$8.91M0.19%+1,820+5.6%Added
Baird Financial Group, Inc.34,935$9.04M0.01%+1,086+3.2%Added
Susquehanna International Group, LLP35,039$9.07M0.01%+11,453+48.6%Added
Brant Point Investment Management LLC35,072$9.08M2.20%00.0%Unchanged
Sumitomo Mitsui DS Asset Management Company, Ltd35,127$9.09M0.07%+444+1.3%Added
Park Avenue Securities LLC35,377$9.15M0.08%−1,880−5.0%Reduced
CIBC World Markets Inc.35,523$9.19M0.02%+228+0.6%Added
CIBC World Markets Corp35,709$9.24M0.05%+35,709New
Bath Savings Trust Co36,033$9.32M0.93%+4,170+13.1%Added
Commonwealth Equity Services, LLC36,181$9.36M0.01%−3,975−9.9%Reduced
PBU - The Pension Fund of Early Childhood & Youth Educators36,233$9.38M0.14%+36,233New
Tocqueville Asset Management L.P.36,616$9.48M0.14%+9,899+37.1%Added
New York Life Investment Management LLC37,292$9.65M0.08%−95−0.3%Reduced
Pathstone Holdings, LLC37,713$9.76M0.04%−9,075−19.4%Reduced
Andra AP-fonden38,200$9.89M0.12%+21,100+123.4%Added
Renaissance Investment Group LLC38,311$9.91M2.00%+857+2.3%Added
Picton Mahoney Asset Management38,507$9.97M0.11%−9,974−20.6%Reduced
Talbot Financial, LLC38,547$9.98M0.82%−1,311−3.3%Reduced
O'Shaughnessy Asset Management, LLC38,636$10.0M0.06%−4,431−10.3%Reduced
Police & Firemen's Retirement System of New Jersey38,915$10.1M0.08%−1,904−4.7%Reduced
Cerity Partners LLC39,266$10.2M0.01%+1,974+5.3%Added
Janney Montgomery Scott LLC39,577$10.2M0.02%−23,791−37.5%Reduced
Assenagon Asset Management S.A.39,857$10.3M0.02%−321,149−89.0%Reduced
Advisor Group Holdings, Inc.39,938$10.3M0.02%−75,053−65.3%Reduced
Verity & Verity, LLC40,198$10.4M0.81%−582−1.4%Reduced
Bank of Nova Scotia40,411$10.5M0.02%−115,828−74.1%Reduced
Xponance, Inc.40,491$10.5M0.08%+2,300+6.0%Added
Alley Investment Management Company, LLC40,745$10.5M1.23%−21,813−34.9%Reduced
USS Investment Management Ltd41,393$10.7M0.05%+194+0.5%Added
Utah Retirement Systems41,907$10.8M0.10%00.0%Unchanged
Nicola Wealth Management Ltd.42,900$11.1M1.01%00.0%Unchanged
Mediolanum International Funds Ltd42,528$11.1M0.11%−10,730−20.1%Reduced
GWM Advisors LLC43,090$11.2M0.04%−165,800−79.4%Reduced
Segment Wealth Management, LLC43,315$11.2M0.65%−263−0.6%Reduced
Busey Wealth Management43,520$11.3M0.30%−1,844−4.1%Reduced
FineMark National Bank & Trust44,647$11.6M0.36%−3,186−6.7%Reduced
Pelham Capital Ltd.44,672$11.6M6.15%00.0%Unchanged
Capital Group Private Client Services, Inc.44,753$11.6M0.18%−1,263−2.7%Reduced
GW&K Investment Management, LLC44,861$11.6M0.10%−190−0.4%Reduced
Gotham Asset Management, LLC45,264$11.7M0.04%−1,398−3.0%Reduced
British Columbia Investment Management Corp45,501$11.8M0.06%−99,670−68.7%Reduced
Teacher Retirement System of Texas46,123$11.9M0.04%+6,602+16.7%Added
Teachers Retirement System of the State of Kentucky46,507$12.0M0.09%+1,730+3.9%Added
State of Alaska, Department of Revenue47,367$12.3M0.13%−1,880−3.8%Reduced
Exencial Wealth Advisors, LLC47,482$12.3M0.39%+14,469+43.8%Added
Amalgamated Bank47,654$12.3M0.09%−1,981−4.0%Reduced
Tompkins Financial Corp47,835$12.4M0.96%−172−0.4%Reduced
IFM Investors Pty Ltd47,869$12.4M0.10%+329+0.7%Added
South Street Advisors LLC48,309$12.5M1.76%−300−0.6%Reduced
Mariner, LLC48,785$12.6M0.02%−11,932−19.7%Reduced
Appleton Partners Inc49,292$12.8M0.84%+438+0.9%Added
PensionDanmark Pensionsforsikringsaktieselskab49,659$12.9M0.12%+49,659New
DnB Asset Management AS50,255$13.0M0.05%+722+1.5%Added
HighTower Advisors, LLC50,929$13.2M0.01%−15,411−23.2%Reduced
Rench Wealth Management, Inc.51,168$13.2M3.90%+733+1.5%Added
Newport Capital Group, LLC51,338$13.3M8.12%+50.0%Added
Ci Investments Inc.51,803$13.4M0.06%−106,920−67.4%Reduced
GuoLine Advisory Pte Ltd52,400$13.6M1.25%+52,400New
iA Global Asset Management Inc.52,720$13.6M0.17%−170−0.3%Reduced
11 Capital Partners LP53,714$13.9M4.13%−13,360−19.9%Reduced
Forsta Ap-Fonden53,760$13.9M0.08%−14,940−21.7%Reduced
Skandinaviska Enskilda Banken AB (publ)54,177$14.0M0.06%+4,105+8.2%Added
ProShare Advisors LLC54,222$14.0M0.02%+2,767+5.4%Added
Running Oak Capital LLC54,672$14.1M1.77%−52−0.1%Reduced
Baltimore-Washington Financial Advisors, Inc.55,166$14.3M0.59%−20,568−27.2%Reduced
Mirae Asset Global Investments Co., Ltd.55,276$14.3M0.04%−10,412−15.9%Reduced
Varma Mutual Pension Insurance Co57,550$14.9M0.09%+7,300+14.5%Added
Daiwa Securities Group Inc.58,643$15.2M0.05%+1,402+2.4%Added
Lighthouse Investment Partners, LLC58,888$15.2M0.51%+58,888New
Taikang Asset Management (Hong Kong) Co Ltd59,708$15.5M1.53%+15,608+35.4%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys59,734$15.5M0.08%−1,828−3.0%Reduced
Ensign Peak Advisors, Inc61,028$15.8M0.03%+2,738+4.7%Added
MetLife Investment Management62,255$16.1M0.08%−2,036−3.2%Reduced
Banco Bilbao Vizcaya Argentaria, S.A.62,750$16.3M0.11%−3,139−4.8%Reduced
Nisa Investment Advisors, LLC64,309$16.6M0.05%−1,175−1.8%Reduced
Lawson Kroeker Investment Management Inc64,329$16.6M4.95%+1,161+1.8%Added
Factory Mutual Insurance Co64,500$16.7M0.17%+15,000+30.3%Added
Smithbridge Asset Management Inc65,094$16.8M1.44%+32,950+102.5%Added
Vident Advisory, LLC65,341$16.9M0.16%+2,533+4.0%Added
Public Sector Pension Investment Board65,417$16.9M0.06%−5,887−8.3%Reduced
Natixis66,649$17.2M0.07%−38,677−36.7%Reduced
State of Michigan Retirement System67,187$17.4M0.08%−2,100−3.0%Reduced
Brookstone Capital Management67,584$17.5M0.20%+16,268+31.7%Added
North Point Portfolio Managers Corp67,595$17.5M2.96%+265+0.4%Added
Czech National Bank67,715$17.5M0.11%+2,604+4.0%Added
Ilmarinen Mutual Pension Insurance Co68,100$17.6M0.14%00.0%Unchanged
Point72 Asset Management, L.P.69,387$18.0M0.03%+69,387New
National Bank of Canada71,918$18.6M0.02%−63,353−46.8%Reduced
Arizona State Retirement System72,211$18.7M0.10%−2,641−3.5%Reduced
Assetmark, Inc73,376$19.0M0.04%+104+0.1%Added
Mountain Pacific Investment Advisers Inc73,731$19.1M3.09%−1,185−1.6%Reduced
Ferguson Wellman Capital Management, Inc74,346$19.2M0.31%−38,575−34.2%Reduced
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund75,954$19.7M0.16%−40−0.1%Reduced
Baldwin Brothers Inc75,965$19.7M1.26%−864−1.1%Reduced
Life Cycle Investment Partners Ltd76,175$19.7M0.14%+76,175New
Distillate Capital Partners LLC76,243$19.7M1.02%+21,609+39.6%Added
STRS Ohio77,216$20.0M0.07%+17,435+29.2%Added