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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: 1,341 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 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 20251,341$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, 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
Romano Brothers and Company15,392$4.77M0.54%−310−2.0%Reduced
Freedom Day Solutions, LLC15,146$4.69M1.27%+15,146New
Hartford Investment Management Co15,071$4.67M0.14%−424−2.7%Reduced
1832 Asset Management L.P.15,000$4.65M0.01%−2,662−15.1%Reduced
Ballew Advisors, Inc15,014$4.56M2.55%−1,741−10.4%Reduced
Ayrshire Capital Management LLC14,617$4.53M2.10%−8,372−36.4%Reduced
Oxbow Advisors, LLC14,424$4.47M0.41%00.0%Unchanged
Kestra Advisory Services, LLC14,101$4.37M0.02%−30,912−68.7%Reduced
Intech Investment Management LLC14,021$4.34M0.04%−14,549−50.9%Reduced
U.S. Capital Wealth Advisors, LLC13,996$4.34M0.12%−4,533−24.5%Reduced
Principal Securities, Inc.13,995$4.33M0.07%+1,148+8.9%Added
Coldstream Capital Management Inc13,892$4.30M0.06%+172+1.3%Added
Robbins Farley LLC13,733$4.25M1.77%+1,512+12.4%Added
Bradley Foster & Sargent Inc13,712$4.25M0.06%+312+2.3%Added
Ariel Investments, LLC13,645$4.23M0.05%+13,645New
William Blair Investment Management, LLC13,511$4.18M0.01%−19,874−59.5%Reduced
Louisiana State Employees Retirement System13,500$4.18M0.07%00.0%Unchanged
Arthur M. Cohen & Associates, LLC13,402$4.15M0.70%+427+3.3%Added
Norinchukin Bank, The13,369$4.14M0.06%+222+1.7%Added
Nelson Capital Management, LLC13,343$4.13M0.49%+174+1.3%Added
Brasada Capital Management, LP13,302$4.11M0.70%+641+5.1%Added
Vestmark Advisory Solutions, Inc.12,924$4.00M0.08%−1,919−12.9%Reduced
New Age Alpha Advisors, LLC12,791$3.96M0.17%−1,483−10.4%Reduced
Neuberger Berman Group LLC12,714$3.94M0.00%−61,290−82.8%Reduced
Synovus Financial Corp12,700$3.93M0.05%+3,144+32.9%Added
Maryland State Retirement & Pension System12,638$3.91M0.08%+312+2.5%Added
Lombard Odier Asset Management (Switzerland) SA12,615$3.91M0.18%+2,596+25.9%Added
Trust Co of Toledo NA12,518$3.88M0.39%−158−1.2%Reduced
Gulf International Bank (UK) Ltd12,509$3.88M0.13%−247−1.9%Reduced
Securian Asset Management, Inc12,398$3.84M0.10%−983−7.3%Reduced
Vaughan Nelson Investment Management, L.P.12,395$3.84M0.03%00.0%Unchanged
Boston Private Wealth LLC12,379$3.83M0.21%+76+0.6%Added
Dai-Ichi Life Insurance Company, Ltd12,363$3.83M0.10%+865+7.5%Added
Eastern Bank12,312$3.81M0.07%+11,642+1,737.6%Added
New Vernon Investment Management LLC12,141$3.76M3.51%00.0%Unchanged
Bollard Group LLC12,138$3.76M0.09%+22+0.2%Added
Crossmark Global Holdings, Inc.12,106$3.75M0.06%−87−0.7%Reduced
ING Groep NV12,006$3.72M0.02%−380−3.1%Reduced
Hilltop Holdings Inc.11,892$3.68M0.19%−95−0.8%Reduced
Close Asset Management Ltd11,844$3.67M0.08%−110,851−90.3%Reduced
Jones Financial Companies LLLP12,045$3.66M0.00%+1,520+14.4%Added
Panagora Asset Management Inc11,817$3.66M0.01%+7,546+176.7%Added
Sovereign's Capital Management, LLC11,648$3.61M1.96%+19+0.2%Added
Clearstead Advisors, LLC11,610$3.60M0.05%+215+1.9%Added
New Mexico Educational Retirement Board11,550$3.58M0.11%−100−0.9%Reduced
Chicago Capital, LLC11,538$3.57M0.09%−199−1.7%Reduced
WESPAC Advisors SoCal, LLC11,504$3.56M0.72%+559+5.1%Added
Capital Group Investment Management Pte. Ltd.11,475$3.55M0.60%00.0%Unchanged
Grimes & Company, Inc.11,457$3.55M0.09%+4,186+57.6%Added
Prosperity Consulting Group, LLC11,389$3.53M0.17%+145+1.3%Added
B. Metzler seel. Sohn & Co. AG11,366$3.52M0.03%−1,486−11.6%Reduced
Northwestern Mutual Wealth Management Co11,275$3.49M0.00%−3,301−22.6%Reduced
Jefferies Financial Group Inc.11,200$3.47M0.03%+6,200+124.0%Added
Walleye Trading LLC11,172$3.46M0.06%+948+9.3%Added
Prescott Group Capital Management, L.L.C.11,138$3.45M0.36%−3,000−21.2%Reduced
E. Ohman J:or Asset Management AB11,075$3.43M0.08%00.0%Unchanged
Allworth Financial LP11,063$3.43M0.02%+208+1.9%Added
Cornerstone Advisors, LLC11,000$3.41M0.11%00.0%Unchanged
Whittier Trust Co10,915$3.39M0.04%+49+0.5%Added
Neo Ivy Capital Management10,918$3.38M0.82%+8,667+385.0%Added
Landscape Capital Management, L.L.C.10,876$3.37M0.21%+6,286+136.9%Added
Brinker Capital Investments, LLC10,841$3.36M0.03%−3,917−26.5%Reduced
LGT Fund Management Co Ltd.10,945$3.35M0.27%+1,800+19.7%Added
BI Asset Management Fondsmaeglerselskab A/S10,530$3.26M0.03%+537+5.4%Added
Legacy Wealth Management, LLC10,483$3.25M0.98%−3,008−22.3%Reduced
Allspring Global Investments Holdings, LLC10,573$3.23M0.01%−548−4.9%Reduced
Tilia Fiduciary Partners, Inc.10,392$3.22M1.86%+179+1.8%Added
NewEdge Wealth, LLC12,911$3.20M0.05%−200−1.5%Reduced
Verition Fund Management LLC10,338$3.20M0.02%−2,609−20.2%Reduced
Trueblood Wealth Management, LLC10,121$3.13M1.22%+131+1.3%Added
AG2R la Mondiale Gestion D'Actifs9,703$3.11M0.16%00.0%Unchanged
Ritholtz Wealth Management10,016$3.10M0.06%+181+1.8%Added
Telligent Fund, LP10,000$3.10M2.65%−2,000−16.7%Reduced
Game Creek Capital, LP10,000$3.10M1.33%00.0%Unchanged
Harvest Investment Services, LLC9,992$3.09M0.62%+2,228+28.7%Added
Metis Global Partners, LLC9,972$3.09M0.07%−2,464−19.8%Reduced
Ancora Advisors, LLC9,918$3.07M0.06%−97−1.0%Reduced
Robeco Institutional Asset Management B.V.9,754$3.02M0.00%−149−1.5%Reduced
Fairfield Financial Advisors, LTD9,646$2.99M1.01%−315−3.2%Reduced
Lido Advisors, LLC9,642$2.99M0.01%+679+7.6%Added
Apollon Wealth Management, LLC9,579$2.97M0.05%+194+2.1%Added
Jane Street Group, LLC9,572$2.96M0.00%+235+2.5%Added
HB Wealth Management, LLC9,553$2.96M0.02%+369+4.0%Added
Group One Trading, L.P.9,415$2.92M0.09%+8,104+618.2%Added
Farther Finance Advisors, LLC9,250$2.87M0.04%+1,378+17.5%Added
RSM US Wealth Management LLC9,233$2.86M0.04%−1,414−13.3%Reduced
C WorldWide Group Holding A/S9,224$2.86M0.04%+2,675+40.8%Added
Umb Bank N A9,221$2.86M0.04%−73−0.8%Reduced
Ostrum Asset Management9,220$2.86M0.13%+4,651+101.8%Added
Old North State Trust, LLC9,190$2.85M1.73%−105−1.1%Reduced
Knollwood Investment Advisory, LLC9,168$2.84M0.26%−32−0.3%Reduced
Allstate Corp9,114$2.82M0.06%+8,316+1,042.1%Added
Worldquant Millennium Advisors LLC9,052$2.80M0.01%+9,052New
Glenmede Investment Management, LP8,844$2.74M0.01%−271−3.0%Reduced
Tokio Marine Asset Management Co Ltd8,814$2.73M0.10%+467+5.6%Added
Toroso Investments, LLC8,666$2.68M0.01%+936+12.1%Added
Leavell Investment Management, Inc.8,635$2.67M0.11%−703−7.5%Reduced
Atom Investors LP8,600$2.66M0.20%+1,603+22.9%Added
Harbor Advisors LLC8,375$2.59M0.40%00.0%Unchanged
Delta Global Management LP8,328$2.58M0.19%+8,328New