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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
Colonial Trust Co22,898$4.96M0.67%+898+4.1%Added
UniSuper Management Pty Ltd22,938$4.97M0.03%+522+2.3%Added
Picton Mahoney Asset Management23,063$4.99M0.05%−15,444−40.1%Reduced
Hantz Financial Services, Inc.23,490$5.09M0.08%−2,906−11.0%Reduced
Ensign Peak Advisors, Inc23,767$5.15M0.01%−37,261−61.1%Reduced
Douglass Winthrop Advisors, LLC23,896$5.18M0.09%−732−3.0%Reduced
Prospera Financial Services Inc23,928$5.18M0.08%+156+0.7%Added
Avanza Fonder AB24,193$5.24M0.14%00.0%Unchanged
Spirepoint Private Client, LLC24,247$5.25M0.50%+2,274+10.3%Added
Ethic Inc.24,250$5.25M0.08%−5,902−19.6%Reduced
Schwab Charitable Fund24,290$5.26M0.13%00.0%Unchanged
Entropy Technologies, LP24,482$5.30M0.24%+24,482New
Geneos Wealth Management Inc.24,616$5.33M0.12%−2,260−8.4%Reduced
Mirae Asset Global ETFs Holdings Ltd.24,859$5.38M0.01%−1,801−6.8%Reduced
Stratos Wealth Partners, LTD.25,233$5.47M0.06%+698+2.8%Added
Empowered Funds, LLC25,290$5.48M0.03%+25,290New
EULAV Asset Management25,400$5.50M0.18%00.0%Unchanged
Cane Capital Partners, LLC25,470$5.52M2.43%−1,010−3.8%Reduced
Glenmede Trust Co NA25,700$5.57M0.03%+16,044+166.2%Added
OP Asset Management Ltd26,155$5.66M0.06%−2,019−7.2%Reduced
Brant Point Investment Management LLC26,367$5.71M1.57%−8,705−24.8%Reduced
Yousif Capital Management, LLC26,456$5.73M0.07%−1,705−6.1%Reduced
Jackson Wealth Management, LLC26,459$5.73M0.59%−90−0.3%Reduced
BNP Paribas26,754$5.77M0.18%−65,928−71.1%Reduced
CWM, LLC26,731$5.79M0.02%+1,077+4.2%Added
Evelyn Partners Investment Management Services Ltd27,000$5.85M0.69%+27,000New
Ayrshire Capital Management LLC27,009$5.85M3.03%+2,588+10.6%Added
Mutual of America Capital Management LLC27,333$5.92M0.07%−243−0.9%Reduced
Van Hulzen Asset Management, LLC27,364$5.93M0.44%−68,106−71.3%Reduced
PFA Pension, Forsikringsaktieselskab27,472$5.95M0.02%+96+0.4%Added
JustInvest LLC27,599$5.98M0.06%+723+2.7%Added
Advisor Group Holdings, Inc.27,518$5.98M0.01%−12,420−31.1%Reduced
OpenArc Corporate Advisory, LLC28,243$6.12M0.09%+6,932+32.5%Added
McKinley Carter Wealth Services, Inc.28,764$6.23M0.36%−3,571−11.0%Reduced
Nordea Investment Management AB29,228$6.27M0.01%−19−0.1%Reduced
Torray LLC29,035$6.29M0.92%+5,855+25.3%Added
Wealthfront Advisers LLC29,119$6.31M0.01%−3,248−10.0%Reduced
Arrowstreet Capital, Limited Partnership29,178$6.32M0.00%+29,178New
Bahl & Gaynor Inc29,264$6.34M0.03%−808−2.7%Reduced
Mackenzie Financial Corp29,384$6.36M0.01%+2,481+9.2%Added
Oregon Public Employees Retirement Fund29,452$6.38M0.08%+100+0.3%Added
Strategy Asset Managers LLC29,720$6.44M1.06%+117+0.4%Added
Capital Group Private Client Services, Inc.29,799$6.45M0.11%−14,954−33.4%Reduced
Marks Group Wealth Management, Inc29,959$6.49M0.63%−1,045−3.4%Reduced
North Star Investment Management Corp.30,382$6.58M0.40%−20.0%Reduced
BI Asset Management Fondsmaeglerselskab A/S30,466$6.60M0.07%+19,924+189.0%Added
Rockefeller Capital Management L.P.30,773$6.67M0.01%+900+3.0%Added
Point72 Asset Management, L.P.30,880$6.69M0.01%−38,507−55.5%Reduced
Swiss Life Asset Management Ltd31,006$6.72M0.03%+5,683+22.4%Added
Sigma Investment Counselors Inc31,251$6.77M0.36%−1,430−4.4%Reduced
Smithbridge Asset Management Inc32,547$7.05M1.05%−32,547−50.0%Reduced
PensionDanmark Pensionsforsikringsaktieselskab32,608$7.06M0.07%−17,051−34.3%Reduced
Jain Global LLC32,928$7.13M0.09%+32,928New
Philadelphia Financial Management of San Francisco, LLC33,000$7.15M2.29%+33,000New
Public Employees Retirement Association of Colorado33,244$7.20M0.03%+60.0%Added
Private Advisor Group, LLC33,306$7.21M0.03%+407+1.2%Added
SG Americas Securities, LLC33,427$7.24M0.01%+2,212+7.1%Added
O'Shaughnessy Asset Management, LLC34,010$7.37M0.04%−4,626−12.0%Reduced
Hamilton Point Investment Advisors, LLC34,294$7.43M1.14%+34,294New
Bath Savings Trust Co34,692$7.51M0.80%−1,341−3.7%Reduced
Trillium Asset Management, LLC38,781$7.59M0.25%+5,513+16.6%Added
Rathbone Brothers plc35,114$7.60M0.03%+765+2.2%Added
Sumitomo Mitsui DS Asset Management Company, Ltd35,667$7.72M0.06%+540+1.5%Added
Cincinnati Specialty Underwriters Insurance CO35,671$7.73M1.88%+27,243+323.2%Added
Commonwealth Equity Services, LLC35,731$7.74M0.01%−450−1.2%Reduced
Bank of Nova Scotia35,783$7.75M0.01%−4,628−11.5%Reduced
XTX Topco Ltd36,074$7.81M0.14%+36,074New
Mediolanum International Funds Ltd36,574$7.90M0.08%−5,954−14.0%Reduced
NEOS Investment Management LLC36,683$7.94M0.04%+6,090+19.9%Added
Clark Capital Management Group, Inc.37,475$8.12M0.05%+36,449+3,552.5%Added
Pathstone Holdings, LLC37,914$8.21M0.03%+201+0.5%Added
Rakuten Investment Management, Inc.38,129$8.23M0.02%+4,364+12.9%Added
New York Life Investment Management LLC38,054$8.24M0.07%+762+2.0%Added
GWM Advisors LLC38,225$8.28M0.03%−4,865−11.3%Reduced
Verity & Verity, LLC38,673$8.38M0.62%−1,525−3.8%Reduced
Police & Firemen's Retirement System of New Jersey38,999$8.45M0.07%+84+0.2%Added
Captrust Financial Advisors39,193$8.49M0.01%−72,116−64.8%Reduced
Interval Partners, LP39,336$8.52M0.29%+15,648+66.1%Added
Wealth Enhancement Advisory Services, LLC39,627$8.62M0.02%−38,963−49.6%Reduced
FORA Capital, LLC40,089$8.68M0.64%+40,089New
Allianz Asset Management GmbH40,727$8.82M0.01%−353,492−89.7%Reduced
Talbot Financial, LLC40,869$8.85M0.74%+2,322+6.0%Added
Utah Retirement Systems41,223$8.93M0.09%−684−1.6%Reduced
Kestra Advisory Services, LLC41,317$8.95M0.03%+25,415+159.8%Added
National Bank of Canada41,767$9.05M0.01%−30,151−41.9%Reduced
Renaissance Investment Group LLC41,844$9.06M1.95%+3,533+9.2%Added
MUFG Securities EMEA plc42,622$9.23M0.14%+32,100+305.1%Added
Baird Financial Group, Inc.42,763$9.26M0.01%+7,828+22.4%Added
Nicola Wealth Management Ltd.42,900$9.29M1.12%00.0%Unchanged
GW&K Investment Management, LLC43,084$9.33M0.08%−1,777−4.0%Reduced
Cardinal Capital Management, Inc.43,167$9.35M0.25%+43,167New
USS Investment Management Ltd43,626$9.45M0.04%+2,233+5.4%Added
Busey Wealth Management43,838$9.49M0.26%+318+0.7%Added
Daiwa Securities Group Inc.43,906$9.51M0.03%−14,737−25.1%Reduced
Exencial Wealth Advisors, LLC44,982$9.74M0.30%−2,500−5.3%Reduced
Teacher Retirement System of Texas45,733$9.90M0.04%−390−0.8%Reduced
Segment Wealth Management, LLC46,132$9.99M0.59%+2,817+6.5%Added
Xponance, Inc.46,515$10.1M0.07%+6,024+14.9%Added
Tocqueville Asset Management L.P.46,538$10.1M0.15%+9,922+27.1%Added
Amalgamated Bank46,611$10.1M0.08%−1,043−2.2%Reduced