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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, 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
STRS Ohio73,867$16.0M0.06%−3,349−4.3%Reduced
Public Sector Pension Investment Board73,097$15.8M0.05%+7,680+11.7%Added
US Bancorp72,485$15.7M0.02%−5,792−7.4%Reduced
CIBC Asset Management Inc72,457$15.7M0.04%−12,094−14.3%Reduced
United Capital Financial Advisers, LLC72,296$15.7M0.10%−8,295−10.3%Reduced
Investment Management Corp of Ontario71,126$15.4M0.20%−41,708−37.0%Reduced
Cetera Investment Advisers70,403$15.2M0.02%−19,980−22.1%Reduced
Beacon Pointe Advisors, LLC70,388$15.2M0.08%−30,459−30.2%Reduced
Arizona State Retirement System70,371$15.2M0.09%−1,840−2.5%Reduced
Czech National Bank69,986$15.2M0.10%+2,271+3.4%Added
Cornerstone Advisors, LLC69,034$15.0M0.55%+46,770+210.1%Added
Baldwin Brothers Inc68,934$14.9M1.08%−7,031−9.3%Reduced
Taikang Asset Management (Hong Kong) Co Ltd68,084$14.7M1.47%+8,376+14.0%Added
State of Michigan Retirement System67,087$14.5M0.08%−100−0.1%Reduced
Lawson Kroeker Investment Management Inc66,734$14.5M4.21%+2,405+3.7%Added
North Point Portfolio Managers Corp66,482$14.4M2.56%−1,113−1.6%Reduced
Mirae Asset Global Investments Co., Ltd.65,970$14.3M0.04%+10,694+19.3%Added
Factory Mutual Insurance Co64,500$14.0M0.16%00.0%Unchanged
Gotham Asset Management, LLC63,607$13.8M0.04%+18,343+40.5%Added
Nisa Investment Advisors, LLC63,086$13.7M0.05%−1,223−1.9%Reduced
Running Oak Capital LLC62,501$13.5M1.83%+7,829+14.3%Added
Rafferty Asset Management, LLC62,480$13.5M0.05%−15,866−20.3%Reduced
Assenagon Asset Management S.A.62,280$13.5M0.02%+22,423+56.3%Added
MetLife Investment Management60,685$13.1M0.07%−1,570−2.5%Reduced
Commonwealth of Pennsylvania Public School Empls Retrmt Sys59,861$13.0M0.07%+127+0.2%Added
Commerce Bank58,062$12.6M0.06%+38,235+192.8%Added
Varma Mutual Pension Insurance Co57,550$12.5M0.07%00.0%Unchanged
DnB Asset Management AS56,631$12.3M0.04%+6,376+12.7%Added
Sit Investment Associates Inc56,268$12.2M0.25%+33,621+148.5%Added
Teachers Retirement System of the State of Kentucky55,764$12.1M0.09%+9,257+19.9%Added
SEB Asset Management AB55,595$12.0M0.05%+55,595New
British Columbia Investment Management Corp55,514$12.0M0.07%+10,013+22.0%Added
Banco Bilbao Vizcaya Argentaria, S.A.55,360$11.9M0.08%−7,390−11.8%Reduced
Vident Advisory, LLC54,750$11.9M0.10%−10,591−16.2%Reduced
Ci Investments Inc.54,053$11.7M0.06%+2,250+4.3%Added
GuoLine Advisory Pte Ltd52,400$11.3M1.19%00.0%Unchanged
ProShare Advisors LLC51,795$11.2M0.02%−2,427−4.5%Reduced
Rench Wealth Management, Inc.51,772$11.2M3.37%+604+1.2%Added
Newport Capital Group, LLC51,306$11.1M6.77%−32−0.1%Reduced
IFM Investors Pty Ltd50,353$10.9M0.09%+2,484+5.2%Added
Ferguson Wellman Capital Management, Inc48,122$10.4M0.14%−26,224−35.3%Reduced
Ilmarinen Mutual Pension Insurance Co48,100$10.4M0.08%−20,000−29.4%Reduced
PBU - The Pension Fund of Early Childhood & Youth Educators47,718$10.3M0.16%+11,485+31.7%Added
HighTower Advisors, LLC47,706$10.3M0.01%−3,223−6.3%Reduced
Mercer Global Advisors Inc47,610$10.3M0.02%−107,788−69.4%Reduced
Tompkins Financial Corp47,414$10.3M0.82%−421−0.9%Reduced
State of Alaska, Department of Revenue46,922$10.2M0.11%−445−0.9%Reduced
Cerity Partners LLC46,710$10.1M0.01%+7,444+19.0%Added
Amalgamated Bank46,611$10.1M0.08%−1,043−2.2%Reduced
Tocqueville Asset Management L.P.46,538$10.1M0.15%+9,922+27.1%Added
Xponance, Inc.46,515$10.1M0.07%+6,024+14.9%Added
Segment Wealth Management, LLC46,132$9.99M0.59%+2,817+6.5%Added
Teacher Retirement System of Texas45,733$9.90M0.04%−390−0.8%Reduced
Exencial Wealth Advisors, LLC44,982$9.74M0.30%−2,500−5.3%Reduced
Daiwa Securities Group Inc.43,906$9.51M0.03%−14,737−25.1%Reduced
Busey Wealth Management43,838$9.49M0.26%+318+0.7%Added
USS Investment Management Ltd43,626$9.45M0.04%+2,233+5.4%Added
Cardinal Capital Management, Inc.43,167$9.35M0.25%+43,167New
GW&K Investment Management, LLC43,084$9.33M0.08%−1,777−4.0%Reduced
Nicola Wealth Management Ltd.42,900$9.29M1.12%00.0%Unchanged
Baird Financial Group, Inc.42,763$9.26M0.01%+7,828+22.4%Added
MUFG Securities EMEA plc42,622$9.23M0.14%+32,100+305.1%Added
Renaissance Investment Group LLC41,844$9.06M1.95%+3,533+9.2%Added
National Bank of Canada41,767$9.05M0.01%−30,151−41.9%Reduced
Kestra Advisory Services, LLC41,317$8.95M0.03%+25,415+159.8%Added
Utah Retirement Systems41,223$8.93M0.09%−684−1.6%Reduced
Talbot Financial, LLC40,869$8.85M0.74%+2,322+6.0%Added
Allianz Asset Management GmbH40,727$8.82M0.01%−353,492−89.7%Reduced
FORA Capital, LLC40,089$8.68M0.64%+40,089New
Wealth Enhancement Advisory Services, LLC39,627$8.62M0.02%−38,963−49.6%Reduced
Interval Partners, LP39,336$8.52M0.29%+15,648+66.1%Added
Captrust Financial Advisors39,193$8.49M0.01%−72,116−64.8%Reduced
Police & Firemen's Retirement System of New Jersey38,999$8.45M0.07%+84+0.2%Added
Verity & Verity, LLC38,673$8.38M0.62%−1,525−3.8%Reduced
GWM Advisors LLC38,225$8.28M0.03%−4,865−11.3%Reduced
New York Life Investment Management LLC38,054$8.24M0.07%+762+2.0%Added
Rakuten Investment Management, Inc.38,129$8.23M0.02%+4,364+12.9%Added
Pathstone Holdings, LLC37,914$8.21M0.03%+201+0.5%Added
Clark Capital Management Group, Inc.37,475$8.12M0.05%+36,449+3,552.5%Added
NEOS Investment Management LLC36,683$7.94M0.04%+6,090+19.9%Added
Mediolanum International Funds Ltd36,574$7.90M0.08%−5,954−14.0%Reduced
XTX Topco Ltd36,074$7.81M0.14%+36,074New
Bank of Nova Scotia35,783$7.75M0.01%−4,628−11.5%Reduced
Commonwealth Equity Services, LLC35,731$7.74M0.01%−450−1.2%Reduced
Cincinnati Specialty Underwriters Insurance CO35,671$7.73M1.88%+27,243+323.2%Added
Sumitomo Mitsui DS Asset Management Company, Ltd35,667$7.72M0.06%+540+1.5%Added
Rathbone Brothers plc35,114$7.60M0.03%+765+2.2%Added
Trillium Asset Management, LLC38,781$7.59M0.25%+5,513+16.6%Added
Bath Savings Trust Co34,692$7.51M0.80%−1,341−3.7%Reduced
Hamilton Point Investment Advisors, LLC34,294$7.43M1.14%+34,294New
O'Shaughnessy Asset Management, LLC34,010$7.37M0.04%−4,626−12.0%Reduced
SG Americas Securities, LLC33,427$7.24M0.01%+2,212+7.1%Added
Private Advisor Group, LLC33,306$7.21M0.03%+407+1.2%Added
Public Employees Retirement Association of Colorado33,244$7.20M0.03%+60.0%Added
Philadelphia Financial Management of San Francisco, LLC33,000$7.15M2.29%+33,000New
Jain Global LLC32,928$7.13M0.09%+32,928New
PensionDanmark Pensionsforsikringsaktieselskab32,608$7.06M0.07%−17,051−34.3%Reduced
Smithbridge Asset Management Inc32,547$7.05M1.05%−32,547−50.0%Reduced
Sigma Investment Counselors Inc31,251$6.77M0.36%−1,430−4.4%Reduced
Swiss Life Asset Management Ltd31,006$6.72M0.03%+5,683+22.4%Added