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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: 1,360 institutionsQ2 2025: 1,380 institutionsQ3 2025: 1,342 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 20251,342$69.7B
Q2 20251,380$72.9B
Q1 20251,360$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
Renaissance Technologies LLC4,320$1.12M0.00%−396,180−98.9%Reduced
Kovitz Investment Group Partners, LLC4,352$1.13M0.02%−440,744−99.0%Reduced
Schear Investment Advisers, LLC4,354$1.13M0.48%−2,070−32.2%Reduced
South Dakota Investment Council4,437$1.15M0.02%−280−5.9%Reduced
Guggenheim Capital LLC4,458$1.15M0.01%−676−13.2%Reduced
Fiduciary Trust Co4,476$1.16M0.01%+146+3.4%Added
Horizon Investments, LLC4,481$1.16M0.01%+120+2.8%Added
Moody National Bank Trust Division4,516$1.17M0.11%−2,517−35.8%Reduced
Parsons Capital Management Inc4,568$1.18M0.06%−951−17.2%Reduced
RMB Capital Management, LLC4,585$1.19M0.02%−328−6.7%Reduced
Meiji Yasuda Asset Management Co Ltd.4,626$1.20M0.06%+527+12.9%Added
Meeder Advisory Services, Inc.4,686$1.21M0.05%+81+1.8%Added
Gilbert & Cook, Inc.4,695$1.22M0.15%+102+2.2%Added
We Are One Seven, LLC4,708$1.22M0.02%+1,183+33.6%Added
BankPlus Trust Department4,731$1.22M0.32%−506−9.7%Reduced
Vestmark Advisory Solutions, Inc.4,754$1.23M0.02%−8,170−63.2%Reduced
Vaughan Nelson Investment Management, L.P.4,785$1.24M0.01%−7,610−61.4%Reduced
Robeco Institutional Asset Management B.V.4,799$1.24M0.00%−4,955−50.8%Reduced
Altfest L J & Co Inc4,816$1.25M0.14%+3,951+456.8%Added
RFG Advisory, LLC4,839$1.25M0.02%−2,871−37.2%Reduced
V2 Financial group LLC4,886$1.26M0.62%+4,886New
Pinebridge Investments LLC4,889$1.27M0.01%+4,889New
Third View Private Wealth, LLC4,899$1.27M0.17%+4,899New
Directional Asset Management4,911$1.27M1.11%+4,911New
Allworth Financial LP4,979$1.29M0.01%−6,084−55.0%Reduced
Merrion Investment Management Co, LLC5,000$1.29M0.70%00.0%Unchanged
Elwood Capital Partners LP5,000$1.29M1.11%+5,000New
Portfolio Design Labs, LLC5,016$1.30M0.21%+81+1.6%Added
Everett Harris & Co5,032$1.30M0.02%+864+20.7%Added
Prudential PLC5,074$1.31M0.01%00.0%Unchanged
EPG Wealth Management LLC5,076$1.31M0.35%+191+3.9%Added
Aptus Capital Advisors, LLC5,087$1.32M0.01%+141+2.9%Added
Warren Averett Asset Management, LLC5,166$1.34M0.01%+3,210+164.1%Added
Vestcor Inc5,183$1.34M0.04%00.0%Unchanged
AustralianSuper Pty Ltd5,208$1.35M0.01%+1,295+33.1%Added
Legato Capital Management LLC5,210$1.35M0.12%00.0%Unchanged
Kayne Anderson Rudnick Investment Management LLC5,213$1.35M0.00%+1,906+57.6%Added
Dover Advisors, LLC5,259$1.36M0.53%+75+1.4%Added
Disciplined Investments, LLC5,266$1.36M0.52%−811−13.3%Reduced
Boston Private Wealth LLC5,284$1.37M0.08%−7,095−57.3%Reduced
Covenant Partners, LLC5,288$1.37M0.40%00.0%Unchanged
Summit Trail Advisors, LLC5,290$1.37M0.02%−875−14.2%Reduced
SBI Okasan Asset Management Co.Ltd.5,210$1.37M0.08%+5,210New
Polymer Capital Management (US) LLC5,307$1.37M0.18%+5,307New
QRG Capital Management, Inc.5,323$1.38M0.02%+272+5.4%Added
Verition Fund Management LLC5,341$1.38M0.01%−4,997−48.3%Reduced
Bannerstone Capital Management, LLC5,420$1.40M1.34%+5,420New
Builder Investment Group Inc5,496$1.42M0.31%00.0%Unchanged
Eagle Wealth Strategies LLC5,502$1.42M0.66%−10.0%Reduced
Seelaus Asset Management LLC5,503$1.42M1.13%+5+0.1%Added
Coastal Bridge Advisors, LLC5,518$1.43M0.11%+942+20.6%Added
J.W. Cole Advisors, Inc.6,004$1.44M0.03%−166−2.7%Reduced
Vise Technologies, Inc.5,577$1.44M0.03%+3,278+142.6%Added
Everence Capital Management Inc5,628$1.46M0.09%−1,632−22.5%Reduced
Toroso Investments, LLC5,673$1.47M0.01%−2,993−34.5%Reduced
Potomac Fund Management Inc5,848$1.51M0.06%+321+5.8%Added
Keybank National Association5,918$1.53M0.01%−134−2.2%Reduced
Frank, Rimerman Advisors LLC5,935$1.54M0.10%−116−1.9%Reduced
Alteri Wealth LLC5,969$1.54M0.50%+49+0.8%Added
Two Sigma Securities, LLC6,054$1.57M0.22%+6,054New
Cabot Wealth Management Inc6,118$1.58M0.18%−297−4.6%Reduced
Laird Norton Trust Company, LLC6,168$1.60M0.03%+6,168New
Pinnacle Wealth Planning Services, Inc.6,224$1.61M0.17%−820−11.6%Reduced
Sterling Capital Management LLC6,249$1.62M0.03%−1,654−20.9%Reduced
Farringdon Capital, Ltd.6,275$1.62M0.40%+6,275New
Twin Tree Management, LP6,276$1.62M0.17%+6,276New
Congress Asset Management Co6,385$1.65M0.01%−392,825−98.4%Reduced
Heritage Family Offices, LLP6,475$1.68M0.76%−532−7.6%Reduced
Canada Post Corp Registered Pension Plan6,479$1.68M0.06%+1,360+26.6%Added
Nomura Holdings Inc6,512$1.69M0.00%−1,124−14.7%Reduced
Pine Valley Investments Ltd Liability Co6,574$1.70M0.08%−211−3.1%Reduced
Ascent Group, LLC6,619$1.71M0.06%−436−6.2%Reduced
Delta Global Management LP6,620$1.71M0.12%−1,708−20.5%Reduced
Fairfield Financial Advisors, LTD6,651$1.72M0.56%−2,995−31.0%Reduced
Kentucky Retirement Systems Insurance Trust Fund6,674$1.73M0.11%00.0%Unchanged
Heritage Wealth Advisors6,687$1.73M0.07%+5,189+346.4%Added
AE Wealth Management LLC6,811$1.76M0.01%+24+0.4%Added
Oppenheimer & Co Inc6,838$1.77M0.03%+10.0%Added
Squarepoint Ops LLC6,844$1.77M0.00%+6+0.1%Added
Savant Capital, LLC6,856$1.77M0.01%−165−2.4%Reduced
Lombard Odier Asset Management (USA) Corp6,862$1.78M0.72%−826−10.7%Reduced
Manhattan West Asset Management, LLC6,870$1.78M0.36%+49+0.7%Added
Resources Investment Advisors, LLC.6,872$1.78M0.02%−279−3.9%Reduced
Cincinnati Indemnity Co6,882$1.78M4.47%+6,882New
MUFG Securities Americas Inc.6,918$1.79M0.11%+4+0.1%Added
Ostrum Asset Management6,925$1.79M0.09%−2,295−24.9%Reduced
Arlington Trust Co LLC6,950$1.80M0.18%−432−5.9%Reduced
Securian Asset Management, Inc6,983$1.81M0.07%−5,415−43.7%Reduced
Prime Capital Investment Advisors, LLC7,076$1.83M0.02%−205−2.8%Reduced
Virtus Investment Advisers, Inc.7,130$1.85M0.50%+1,201+20.3%Added
Farther Finance Advisors, LLC7,257$1.88M0.02%−1,993−21.5%Reduced
Skopos Labs, Inc.7,161$1.88M0.09%+2,821+65.0%Added
Siemens Fonds Invest GmbH7,199$1.88M0.10%−492−6.4%Reduced
Wiley Bros.-Aintree Capital, LLC7,432$1.89M0.01%+285+4.0%Added
Bailard, Inc.7,323$1.90M0.04%−282−3.7%Reduced
VeraBank, N.A.7,411$1.92M0.35%−113−1.5%Reduced
Coppell Advisory Solutions LLC7,331$1.92M0.19%+1,283+21.2%Added
Steward Partners Investment Advisory, LLC7,424$1.92M0.01%+993+15.4%Added
Fulcrum Asset Management LLP7,346$1.92M0.54%−218−2.9%Reduced
Bright Rock Capital Management, LLC7,500$1.94M0.38%00.0%Unchanged