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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: 1,360 institutionsQ2 2025: 1,380 institutionsQ3 2025: 1,342 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 20251,342$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, 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
Cozad Asset Management Inc3,003$650.3K0.05%+1,166+63.5%Added
Midwest Trust Co3,017$653.4K0.01%−46−1.5%Reduced
Asempa Wealth Advisors3,026$654.7K0.57%00.0%Unchanged
Occidental Asset Management, LLC3,040$658.4K0.08%+80+2.7%Added
Syon Capital LLC3,074$665.8K0.03%+491+19.0%Added
Marino, Stram & Associates LLC3,082$667.4K0.12%−523−14.5%Reduced
Sunbelt Securities, Inc.3,119$675.5K0.04%−103−3.2%Reduced
IFP Advisors, Inc3,140$680.1K0.01%+19+0.6%Added
Tred Avon Family Wealth, LLC3,216$696.5K0.23%−21−0.6%Reduced
Accurate Wealth Management, LLC3,265$697.9K0.08%+514+18.7%Added
Allen Investment Management LLC3,262$706.5K0.01%+20+0.6%Added
D.A. Davidson & Co.3,266$707.4K0.00%−164−4.8%Reduced
IMC-Chicago, LLC3,308$716.4K0.01%+3,308New
Aprio Wealth Management, LLC3,348$725.0K0.04%+234+7.5%Added
Ashton Thomas Private Wealth, LLC3,379$731.8K0.02%+60+1.8%Added
C WorldWide Group Holding A/S3,381$732.0K0.02%−5,843−63.3%Reduced
Englebert Financial Advisers, LLC3,385$733.1K0.83%+21+0.6%Added
Hartford Funds Management Co LLC3,433$743.9K0.06%+536+18.5%Added
BTG Pactual Asset Management US LLC3,460$749.4K0.07%+786+29.4%Added
Evercore Wealth Management, LLC3,464$750.2K0.01%−220−6.0%Reduced
Resources Investment Advisors, LLC.3,483$754.4K0.01%−3,389−49.3%Reduced
Fifth Third Wealth Advisors LLC3,494$756.7K0.03%+763+27.9%Added
Ballentine Partners, LLC3,507$759.5K0.01%+1,904+118.8%Added
Wedmont Private Capital3,445$760.7K0.02%+218+6.8%Added
Heartland Bank & Trust Co3,534$765.4K0.17%+629+21.7%Added
Guggenheim Capital LLC3,591$777.7K0.01%−867−19.4%Reduced
Virtue Capital Management, LLC3,639$785.8K0.12%+353+10.7%Added
Savvy Advisors, Inc.3,634$787.0K0.02%+2,232+159.2%Added
WBH Advisory Inc3,651$789.9K0.06%+485+15.3%Added
Harel Insurance Investments & Financial Services Ltd.3,651$791.0K0.01%−636−14.8%Reduced
GAMMA Investing LLC3,673$795.5K0.04%−286−7.2%Reduced
Tower Research Capital LLC (TRC)3,687$798.5K0.02%−6,228−62.8%Reduced
Ascent Wealth Partners, LLC3,705$802.4K0.09%−19,687−84.2%Reduced
Ellis Investment Partners, LLC3,716$804.9K0.14%+5+0.1%Added
Inceptionr LLC3,720$805.7K0.19%−285−7.1%Reduced
Essex Investment Management Co LLC3,746$811.3K0.13%00.0%Unchanged
PFG Investments, LLC3,755$813.3K0.04%+205+5.8%Added
Connecticut Wealth Management, LLC3,759$814.1K0.03%00.0%Unchanged
Parsons Capital Management Inc3,808$824.7K0.04%−760−16.6%Reduced
Brookstone Capital Management3,827$828.9K0.01%−63,757−94.3%Reduced
Tema ETFs LLC3,864$836.9K0.06%+14+0.4%Added
Whittier Trust Co of Nevada Inc3,839$841.8K0.02%−89−2.3%Reduced
Pinnacle Associates Ltd3,887$841.8K0.01%+41+1.1%Added
Schonfeld Strategic Advisors LLC3,887$841.8K0.01%−26,042−87.0%Reduced
Harbour Investments, Inc.3,900$844.7K0.01%+2,600+200.0%Added
Independent Advisor Alliance3,932$851.6K0.01%−365−8.5%Reduced
Keebeck Wealth Management, LLC3,938$852.9K0.10%−11,530−74.5%Reduced
TritonPoint Partners, LLC3,943$854.0K0.31%+1,157+41.5%Added
Nelson, Van Denburg & Campbell Wealth Management Group, LLC3,943$854.0K0.02%+3,943New
ISAM Funds (UK) Ltd3,956$856.8K0.42%+3,956New
Wealth Enhancement Trust Services, Inc.3,967$859.2K0.10%+493+14.2%Added
Ticino Wealth3,446$862.4K0.30%−34−1.0%Reduced
Argent Trust Co4,004$867.2K0.03%−63−1.5%Reduced
Quadrant Capital Group LLC4,018$870.2K0.03%−130−3.1%Reduced
Parallel Advisors, LLC4,110$890.2K0.02%+496+13.7%Added
Triangle Securities Wealth Management4,121$892.5K0.20%+118+2.9%Added
Meiji Yasuda Asset Management Co Ltd.4,140$896.6K0.04%−486−10.5%Reduced
St Germain D J Co Inc4,195$908.6K0.04%00.0%Unchanged
TCW Group Inc4,206$910.9K0.01%+203+5.1%Added
Advisory Services Network, LLC4,222$914.5K0.01%+102+2.5%Added
Guyasuta Investment Advisors Inc4,256$921.8K0.05%00.0%Unchanged
Fiduciary Trust Co4,334$938.7K0.01%−142−3.2%Reduced
Kovitz Investment Group Partners, LLC4,336$939.3K0.02%−16−0.4%Reduced
Regal Investment Advisors LLC4,347$941.5K0.05%+1,218+38.9%Added
TFR Capital, LLC.4,357$943.6K0.29%+521+13.6%Added
Coastal Bridge Advisors, LLC4,398$952.6K0.07%−1,120−20.3%Reduced
South Dakota Investment Council4,437$961.0K0.02%00.0%Unchanged
Robeco Institutional Asset Management B.V.4,543$983.9K0.00%−256−5.3%Reduced
Avidian Wealth Solutions, LLC4,546$984.6K0.03%+4,546New
Prosperity Consulting Group, LLC4,570$989.9K0.04%−4,957−52.0%Reduced
Engineers Gate Manager LP4,600$996.3K0.01%+4,600New
Advisory Alpha, LLC4,604$997.2K0.03%+767+20.0%Added
SFM, LLC4,608$997.9K0.60%+643+16.2%Added
44 Wealth Management LLC4,641$1.01M0.35%+4,641New
Boston Private Wealth LLC4,645$1.01M0.07%−639−12.1%Reduced
BankPlus Trust Department4,698$1.02M0.27%−33−0.7%Reduced
Horizon Investments, LLC4,698$1.02M0.01%+217+4.8%Added
Signaturefd, LLC4,718$1.02M0.02%+548+13.1%Added
Monetary Management Group Inc4,720$1.02M0.24%+2,320+96.7%Added
Main Management ETF Advisors, LLC4,748$1.03M0.04%+4,748New
Allworth Financial LP4,779$1.04M0.00%−200−4.0%Reduced
Vaughan Nelson Investment Management, L.P.4,785$1.04M0.01%00.0%Unchanged
Clear Harbor Asset Management, LLC4,818$1.04M0.07%+4,818New
Occudo Quantitative Strategies LP5,065$1.05M0.06%+5,065New
V2 Financial group LLC4,886$1.06M0.49%00.0%Unchanged
Everett Harris & Co4,990$1.08M0.01%−42−0.8%Reduced
Merrion Investment Management Co, LLC5,000$1.08M0.58%00.0%Unchanged
Gilbert & Cook, Inc.5,006$1.08M0.14%+311+6.6%Added
Moody National Bank Trust Division5,064$1.10M0.10%+548+12.1%Added
Prudential PLC5,074$1.10M0.01%00.0%Unchanged
EPG Wealth Management LLC5,118$1.11M0.30%+42+0.8%Added
Vestcor Inc5,183$1.12M0.03%00.0%Unchanged
Dover Advisors, LLC5,186$1.12M0.46%−73−1.4%Reduced
Guinness Atkinson Asset Management Inc5,191$1.12M0.56%+1,825+54.2%Added
Portfolio Design Labs, LLC5,193$1.12M0.20%+177+3.5%Added
SBI Okasan Asset Management Co.Ltd.5,210$1.13M0.05%00.0%Unchanged
Vestmark Advisory Solutions, Inc.5,244$1.14M0.01%+490+10.3%Added
Disciplined Investments, LLC5,266$1.14M0.41%00.0%Unchanged
Fairfield Financial Advisors, LTD5,305$1.15M0.40%−1,346−20.2%Reduced
Canada Post Corp Registered Pension Plan5,329$1.15M0.05%−1,150−17.7%Reduced