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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 2024

Institutional positions in Arthur J. Gallagher & Co. as of Dec 31, 2024. 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
1,325
+140 vs. Q3 2024
Shares held
232.4M
+45.8M (+24.5%) vs. Q3 2024
Total value
$65.9B
+$13.5B (+25.7%) vs. Q3 2024
New holders
220
561 more added
Sold out
80
331 more reduced

18 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2024: 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 2024: 1,325 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 2024: $65.9B
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 2024

Shares, value and share of portfolio for each institution holding Arthur J. Gallagher & Co.; share changes are against Q3 2024.

Institutions holding AJG in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Janus Henderson Group PLC1,499,875$425.7M0.22%+169,172+12.7%Added
Baillie Gifford & Co1,628,965$462.4M0.36%−751,982−31.6%Reduced
D. E. Shaw & Co., Inc.1,758,166$499.1M0.55%+1,649,046+1,511.2%Added
Jane Street Group, LLC1,857,335$527.2M0.84%+1,825,703+5,771.7%Added
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.1,913,076$536.4M0.52%−178,687−8.5%Reduced
Invesco Ltd.1,897,042$538.5M0.10%−34,252−1.8%Reduced
Principal Financial Group Inc2,003,237$568.6M0.31%+1,117,441+126.2%Added
Charles Schwab Investment Management Inc2,029,256$576.0M0.11%+184,960+10.0%Added
WCM Investment Management, LLC2,328,997$662.5M1.56%−13,875−0.6%Reduced
Northern Trust Corp2,355,301$668.6M0.09%+480,193+25.6%Added
Citadel Advisors LLC2,405,296$682.7M0.63%+2,375,510+7,975.3%Added
Winslow Capital Management, LLC2,534,749$719.5M2.56%+2,534,749New
Wellington Management Group LLP2,822,319$801.1M0.15%+1,745,283+162.0%Added
Massachusetts Financial Services Co2,933,988$832.8M0.26%−263,004−8.2%Reduced
Brown Advisory Inc2,957,633$839.5M1.06%+260,533+9.7%Added
Norges Bank5,008,248$1.42B0.19%−173,088−3.3%Reduced
Geode Capital Management, LLC6,277,993$1.78B0.14%+787,265+14.3%Added
Morgan Stanley6,482,851$1.84B0.13%−455,928−6.6%Reduced
Capital World Investors8,199,413$2.33B0.35%+1,910,471+30.4%Added
Capital International Investors10,067,647$2.86B0.54%+305,876+3.1%Added
State Street Corp10,282,064$2.92B0.12%+1,350,057+15.1%Added
FMR LLC11,959,180$3.39B0.20%−346,298−2.8%Reduced
JPMorgan Chase & Co12,557,538$3.56B0.28%+7,712,881+159.2%Added
BlackRock, Inc.19,509,682$5.54B0.11%+1,988,814+11.4%Added
Vanguard Group Inc29,672,134$8.42B0.15%+3,851,661+14.9%Added
Qube Research & Technologies Ltd0$00.00%−119,590−100.0%Sold out
Investment Management Corp of Ontario0$00.00%−82,236−100.0%Sold out
iA Global Asset Management Inc.0$00.00%−21,250−100.0%Sold out
Polar Asset Management Partners Inc.0$00.00%−17,800−100.0%Sold out
Voloridge Investment Management, LLC0$00.00%−17,034−100.0%Sold out
Parallax Volatility Advisers, L.P.0$00.00%−14,258−100.0%Sold out
Quantbot Technologies LP0$00.00%−12,053−100.0%Sold out
Dynamic Technology Lab Private Ltd0$00.00%−11,361−100.0%Sold out
Alerus Financial NA0$00.00%−10,674−100.0%Sold out
AlphaStar Capital Management, LLC0$00.00%−10,012−100.0%Sold out
Caption Management, LLC0$00.00%−9,450−100.0%Sold out
Insight Wealth Strategies, LLC0$00.00%−9,164−100.0%Sold out
Whitford Management LLC0$00.00%−7,700−100.0%Sold out
Veriti Management LLC0$00.00%−7,624−100.0%Sold out
Siemens Fonds Invest GmbH0$00.00%−6,826−100.0%Sold out
Aster Capital Management (DIFC) Ltd0$00.00%−6,807−100.0%Sold out
Financial Management Network Inc0$00.00%−6,306−100.0%Sold out
Kentucky Retirement Systems Insurance Trust Fund0$00.00%−6,487−100.0%Sold out
Neo Ivy Capital Management0$00.00%−5,996−100.0%Sold out
Oak Thistle LLC0$00.00%−5,619−100.0%Sold out
Quantitative Investment Management, LLC0$00.00%−5,293−100.0%Sold out
Magnetar Financial LLC0$00.00%−4,807−100.0%Sold out
Quest Partners LLC0$00.00%−4,062−100.0%Sold out
Lakeview Capital Partners, LLC0$00.00%−4,036−100.0%Sold out
Campbell & CO Investment Adviser LLC0$00.00%−3,868−100.0%Sold out
nVerses Capital, LLC0$00.00%−3,500−100.0%Sold out
DoubleLine ETF Adviser LP0$00.00%−3,467−100.0%Sold out
Virtus ETF Advisers LLC0$00.00%−3,122−100.0%Sold out
Friedenthal Financial0$00.00%−2,698−100.0%Sold out
MQS Management LLC0$00.00%−2,663−100.0%Sold out
Pinnacle Holdings, LLC0$00.00%−2,570−100.0%Sold out
Insigneo Advisory Services, LLC0$00.00%−2,188−100.0%Sold out
Centiva Capital, LP0$00.00%−2,068−100.0%Sold out
Machina Capital S.A.S.0$00.00%−1,626−100.0%Sold out
XTX Topco Ltd0$00.00%−1,588−100.0%Sold out
Paloma Partners Management Co0$00.00%−1,375−100.0%Sold out
Fiduciary Family Office, LLC0$00.00%−1,183−100.0%Sold out
Good Life Advisors, LLC0$00.00%−1,172−100.0%Sold out
MBB Public Markets I LLC0$00.00%−1,170−100.0%Sold out
Morningstar Investment Services LLC0$00.00%−1,104−100.0%Sold out
Jacobi Capital Management LLC0$00.00%−1,038−100.0%Sold out
Dark Forest Capital Management LP0$00.00%−1,013−100.0%Sold out
IHT Wealth Management, LLC0$00.00%−964−100.0%Sold out
Moors & Cabot, Inc.0$00.00%−929−100.0%Sold out
Ariadne Wealth Management, LP0$00.00%−848−100.0%Sold out
Summit Trail Advisors, LLC0$00.00%−874−100.0%Sold out
Beacon Investment Advisory Services, Inc.0$00.00%−850−100.0%Sold out
Douglas Lane & Associates, LLC0$00.00%−821−100.0%Sold out
Hibernia Wealth Partners, LLC0$00.00%−782−100.0%Sold out
Crestmont Private Wealth LLC0$00.00%−781−100.0%Sold out
Robertson Stephens Wealth Management, LLC0$00.00%−768−100.0%Sold out
Allen Mooney & Barnes Investment Advisors LLC0$00.00%−726−100.0%Sold out
Aspiriant, LLC0$00.00%−725−100.0%Sold out
Old National Bancorp0$00.00%−720−100.0%Sold out
NBC Securities, Inc.0$00.00%−667−100.0%Sold out
Quarry LP0$00.00%−633−100.0%Sold out
LRI Investments, LLC0$00.00%−520−100.0%Sold out
Northwest Financial Advisors0$00.00%−493−100.0%Sold out
Gilliland Jeter Wealth Management LLC0$00.00%−310−100.0%Sold out
Loomis Sayles & Co L P0$00.00%−260−100.0%Sold out
DSM Capital Partners LLC0$00.00%−206−100.0%Sold out
Golden State Equity Partners0$00.00%−187−100.0%Sold out
Hobbs Group Advisors, LLC0$00.00%−155−100.0%Sold out
State of Wyoming0$00.00%−109−100.0%Sold out
Planned Solutions, Inc.0$00.00%−74−100.0%Sold out
Altshuler Shaham Ltd0$00.00%−72−100.0%Sold out
Groupama Asset Managment0$00.00%−53−100.0%Sold out
First Financial Corp0$00.00%−31−100.0%Sold out
FWL Investment Management, LLC0$00.00%−19−100.0%Sold out
Claris Advisors, LLC0$00.00%−16−100.0%Sold out
Redmont Wealth Advisors LLC0$00.00%−15−100.0%Sold out
Capital Performance Advisors LLP0$00.00%−14−100.0%Sold out
Jaffetilchin Investment Partners, LLC0$00.00%−10−100.0%Sold out
MeadowBrook Investment Advisors LLC0$00.00%−5−100.0%Sold out
GHP Investment Advisors, Inc.0$00.00%−5−100.0%Sold out