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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
Fulcrum Asset Management LLP7,346$1.92M0.54%−218−2.9%Reduced
Steward Partners Investment Advisory, LLC7,424$1.92M0.01%+993+15.4%Added
Coppell Advisory Solutions LLC7,331$1.92M0.19%+1,283+21.2%Added
VeraBank, N.A.7,411$1.92M0.35%−113−1.5%Reduced
Bailard, Inc.7,323$1.90M0.04%−282−3.7%Reduced
Wiley Bros.-Aintree Capital, LLC7,432$1.89M0.01%+285+4.0%Added
Siemens Fonds Invest GmbH7,199$1.88M0.10%−492−6.4%Reduced
Skopos Labs, Inc.7,161$1.88M0.09%+2,821+65.0%Added
Farther Finance Advisors, LLC7,257$1.88M0.02%−1,993−21.5%Reduced
Virtus Investment Advisers, Inc.7,130$1.85M0.50%+1,201+20.3%Added
Prime Capital Investment Advisors, LLC7,076$1.83M0.02%−205−2.8%Reduced
Securian Asset Management, Inc6,983$1.81M0.07%−5,415−43.7%Reduced
Arlington Trust Co LLC6,950$1.80M0.18%−432−5.9%Reduced
Ostrum Asset Management6,925$1.79M0.09%−2,295−24.9%Reduced
MUFG Securities Americas Inc.6,918$1.79M0.11%+4+0.1%Added
Cincinnati Indemnity Co6,882$1.78M4.47%+6,882New
Resources Investment Advisors, LLC.6,872$1.78M0.02%−279−3.9%Reduced
Manhattan West Asset Management, LLC6,870$1.78M0.36%+49+0.7%Added
Lombard Odier Asset Management (USA) Corp6,862$1.78M0.72%−826−10.7%Reduced
Savant Capital, LLC6,856$1.77M0.01%−165−2.4%Reduced
Squarepoint Ops LLC6,844$1.77M0.00%+6+0.1%Added
Oppenheimer & Co Inc6,838$1.77M0.03%+10.0%Added
AE Wealth Management LLC6,811$1.76M0.01%+24+0.4%Added
Heritage Wealth Advisors6,687$1.73M0.07%+5,189+346.4%Added
Kentucky Retirement Systems Insurance Trust Fund6,674$1.73M0.11%00.0%Unchanged
Fairfield Financial Advisors, LTD6,651$1.72M0.56%−2,995−31.0%Reduced
Delta Global Management LP6,620$1.71M0.12%−1,708−20.5%Reduced
Ascent Group, LLC6,619$1.71M0.06%−436−6.2%Reduced
Pine Valley Investments Ltd Liability Co6,574$1.70M0.08%−211−3.1%Reduced
Nomura Holdings Inc6,512$1.69M0.00%−1,124−14.7%Reduced
Canada Post Corp Registered Pension Plan6,479$1.68M0.06%+1,360+26.6%Added
Heritage Family Offices, LLP6,475$1.68M0.76%−532−7.6%Reduced
Congress Asset Management Co6,385$1.65M0.01%−392,825−98.4%Reduced
Twin Tree Management, LP6,276$1.62M0.17%+6,276New
Farringdon Capital, Ltd.6,275$1.62M0.40%+6,275New
Sterling Capital Management LLC6,249$1.62M0.03%−1,654−20.9%Reduced
Pinnacle Wealth Planning Services, Inc.6,224$1.61M0.17%−820−11.6%Reduced
Laird Norton Trust Company, LLC6,168$1.60M0.03%+6,168New
Cabot Wealth Management Inc6,118$1.58M0.18%−297−4.6%Reduced
Two Sigma Securities, LLC6,054$1.57M0.22%+6,054New
Alteri Wealth LLC5,969$1.54M0.50%+49+0.8%Added
Frank, Rimerman Advisors LLC5,935$1.54M0.10%−116−1.9%Reduced
Keybank National Association5,918$1.53M0.01%−134−2.2%Reduced
Potomac Fund Management Inc5,848$1.51M0.06%+321+5.8%Added
Toroso Investments, LLC5,673$1.47M0.01%−2,993−34.5%Reduced
Everence Capital Management Inc5,628$1.46M0.09%−1,632−22.5%Reduced
Vise Technologies, Inc.5,577$1.44M0.03%+3,278+142.6%Added
J.W. Cole Advisors, Inc.6,004$1.44M0.03%−166−2.7%Reduced
Coastal Bridge Advisors, LLC5,518$1.43M0.11%+942+20.6%Added
Seelaus Asset Management LLC5,503$1.42M1.13%+5+0.1%Added
Eagle Wealth Strategies LLC5,502$1.42M0.66%−10.0%Reduced
Builder Investment Group Inc5,496$1.42M0.31%00.0%Unchanged
Bannerstone Capital Management, LLC5,420$1.40M1.34%+5,420New
Verition Fund Management LLC5,341$1.38M0.01%−4,997−48.3%Reduced
QRG Capital Management, Inc.5,323$1.38M0.02%+272+5.4%Added
Polymer Capital Management (US) LLC5,307$1.37M0.18%+5,307New
SBI Okasan Asset Management Co.Ltd.5,210$1.37M0.08%+5,210New
Summit Trail Advisors, LLC5,290$1.37M0.02%−875−14.2%Reduced
Covenant Partners, LLC5,288$1.37M0.40%00.0%Unchanged
Boston Private Wealth LLC5,284$1.37M0.08%−7,095−57.3%Reduced
Disciplined Investments, LLC5,266$1.36M0.52%−811−13.3%Reduced
Dover Advisors, LLC5,259$1.36M0.53%+75+1.4%Added
Kayne Anderson Rudnick Investment Management LLC5,213$1.35M0.00%+1,906+57.6%Added
Legato Capital Management LLC5,210$1.35M0.12%00.0%Unchanged
AustralianSuper Pty Ltd5,208$1.35M0.01%+1,295+33.1%Added
Vestcor Inc5,183$1.34M0.04%00.0%Unchanged
Warren Averett Asset Management, LLC5,166$1.34M0.01%+3,210+164.1%Added
Aptus Capital Advisors, LLC5,087$1.32M0.01%+141+2.9%Added
EPG Wealth Management LLC5,076$1.31M0.35%+191+3.9%Added
Prudential PLC5,074$1.31M0.01%00.0%Unchanged
Everett Harris & Co5,032$1.30M0.02%+864+20.7%Added
Portfolio Design Labs, LLC5,016$1.30M0.21%+81+1.6%Added
Merrion Investment Management Co, LLC5,000$1.29M0.70%00.0%Unchanged
Elwood Capital Partners LP5,000$1.29M1.11%+5,000New
Allworth Financial LP4,979$1.29M0.01%−6,084−55.0%Reduced
Directional Asset Management4,911$1.27M1.11%+4,911New
Third View Private Wealth, LLC4,899$1.27M0.17%+4,899New
Pinebridge Investments LLC4,889$1.27M0.01%+4,889New
V2 Financial group LLC4,886$1.26M0.62%+4,886New
RFG Advisory, LLC4,839$1.25M0.02%−2,871−37.2%Reduced
Altfest L J & Co Inc4,816$1.25M0.14%+3,951+456.8%Added
Robeco Institutional Asset Management B.V.4,799$1.24M0.00%−4,955−50.8%Reduced
Vaughan Nelson Investment Management, L.P.4,785$1.24M0.01%−7,610−61.4%Reduced
Vestmark Advisory Solutions, Inc.4,754$1.23M0.02%−8,170−63.2%Reduced
BankPlus Trust Department4,731$1.22M0.32%−506−9.7%Reduced
We Are One Seven, LLC4,708$1.22M0.02%+1,183+33.6%Added
Gilbert & Cook, Inc.4,695$1.22M0.15%+102+2.2%Added
Meeder Advisory Services, Inc.4,686$1.21M0.05%+81+1.8%Added
Meiji Yasuda Asset Management Co Ltd.4,626$1.20M0.06%+527+12.9%Added
RMB Capital Management, LLC4,585$1.19M0.02%−328−6.7%Reduced
Parsons Capital Management Inc4,568$1.18M0.06%−951−17.2%Reduced
Moody National Bank Trust Division4,516$1.17M0.11%−2,517−35.8%Reduced
Horizon Investments, LLC4,481$1.16M0.01%+120+2.8%Added
Fiduciary Trust Co4,476$1.16M0.01%+146+3.4%Added
Guggenheim Capital LLC4,458$1.15M0.01%−676−13.2%Reduced
South Dakota Investment Council4,437$1.15M0.02%−280−5.9%Reduced
Schear Investment Advisers, LLC4,354$1.13M0.48%−2,070−32.2%Reduced
Kovitz Investment Group Partners, LLC4,352$1.13M0.02%−440,744−99.0%Reduced
Renaissance Technologies LLC4,320$1.12M0.00%−396,180−98.9%Reduced
Trustmark National Bank Trust Department4,307$1.11M0.07%−1,014−19.1%Reduced