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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: 1,359 institutionsQ2 2025: 1,379 institutionsQ3 2025: 1,341 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 20251,341$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, 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
Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors0$00.00%−2,999−100.0%Sold out
Forum Financial Management, LP0$00.00%−2,785−100.0%Sold out
Linscomb & Williams, Inc.0$00.00%−2,617−100.0%Sold out
Atom Investors LP0$00.00%−2,482−100.0%Sold out
MJP Associates Inc0$00.00%−2,431−100.0%Sold out
VARCOV Co.0$00.00%−2,425−100.0%Sold out
RFG - Bristol Wealth Advisors, LLC0$00.00%−2,285−100.0%Sold out
Fideuram Asset Management (Ireland) dac0$00.00%−1,771−100.0%Sold out
Hartline Investment Corp0$00.00%−2,190−100.0%Sold out
Terra Nova Asset Management LLC0$00.00%−2,149−100.0%Sold out
NorthCrest Asset Manangement, LLC0$00.00%−2,083−100.0%Sold out
CenterBook Partners LP0$00.00%−2,007−100.0%Sold out
Tiaa Trust, National Association0$00.00%−1,954−100.0%Sold out
Avantax Planning Partners, Inc.0$00.00%−1,875−100.0%Sold out
Robertson Stephens Wealth Management, LLC0$00.00%−1,857−100.0%Sold out
Oak Harbor Wealth Partners, LLC0$00.00%−1,812−100.0%Sold out
Oddo BHF Asset Management SAS0$00.00%−1,700−100.0%Sold out
Wolff Wiese Magana LLC0$00.00%−1,624−100.0%Sold out
Two Sigma Investments, LP0$00.00%−1,604−100.0%Sold out
LGT Fund Management Co Ltd.0$00.00%−1,533−100.0%Sold out
Avestar Capital, LLC0$00.00%−1,532−100.0%Sold out
Optimize Financial Inc0$00.00%−1,526−100.0%Sold out
MQS Management LLC0$00.00%−1,498−100.0%Sold out
SageView Advisory Group, LLC0$00.00%−1,442−100.0%Sold out
Conning Inc.0$00.00%−1,428−100.0%Sold out
HBW Advisory Services LLC0$00.00%−1,423−100.0%Sold out
Burney Co0$00.00%−1,420−100.0%Sold out
Alpine Woods Capital Investors, LLC0$00.00%−1,395−100.0%Sold out
Stratos Wealth Advisors, LLC0$00.00%−1,332−100.0%Sold out
Prelude Capital Management, LLC0$00.00%−1,284−100.0%Sold out
Freestone Capital Holdings, LLC0$00.00%−1,239−100.0%Sold out
Values First Advisors, Inc.0$00.00%−1,236−100.0%Sold out
OneAscent Family Office, LLC0$00.00%−1,204−100.0%Sold out
Lifestyle Asset Management, Inc.0$00.00%−1,189−100.0%Sold out
Stokes Family Office, LLC0$00.00%−1,185−100.0%Sold out
Sbe LLC Dba Cedar Cove Wealth Partners0$00.00%−1,182−100.0%Sold out
West Family Investments, Inc.0$00.00%−1,174−100.0%Sold out
Cerro Pacific Wealth Advisors LLC0$00.00%−1,157−100.0%Sold out
WealthPoint Financial, LLC0$00.00%−1,146−100.0%Sold out
Keel Point, LLC0$00.00%−1,092−100.0%Sold out
Burns Matteson Capital Management, LLC0$00.00%−1,077−100.0%Sold out
NLB Skladi, upravljanje premozenja, d.o.o.0$00.00%−1,069−100.0%Sold out
Sivia Capital Partners, LLC0$00.00%−1,066−100.0%Sold out
PDS Planning, Inc0$00.00%−1,064−100.0%Sold out
Baker Tilly Wealth Management, LLC0$00.00%−1,058−100.0%Sold out
Perennial Investment Advisors, LLC0$00.00%−1,050−100.0%Sold out
K.J. Harrison & Partners Inc0$00.00%−1,004−100.0%Sold out
Parsonex Advisory Services, Inc.0$00.00%−997−100.0%Sold out
Optivise Advisory Services LLC0$00.00%−989−100.0%Sold out
True North Advisors, LLC0$00.00%−951−100.0%Sold out
Old North State Wealth Management, LLC0$00.00%−942−100.0%Sold out
Guardian Wealth Advisors, LLC0$00.00%−935−100.0%Sold out
AssuredPartners Investment Advisors, LLC0$00.00%−930−100.0%Sold out
Northwest Bancshares, Inc.0$00.00%−917−100.0%Sold out
Independent Wealth Network Inc.0$00.00%−915−100.0%Sold out
Asset One Wealth Management LLC0$00.00%−965−100.0%Sold out
Yanni & Associates Investment Advisors, LLC0$00.00%−908−100.0%Sold out
Fort Sheridan Advisors LLC0$00.00%−900−100.0%Sold out
Parcion Private Wealth LLC0$00.00%−884−100.0%Sold out
Camden Capital, LLC0$00.00%−878−100.0%Sold out
Curated Wealth Partners LLC0$00.00%−867−100.0%Sold out
SC&H Financial Advisors, Inc.0$00.00%−862−100.0%Sold out
Fiduciary Family Office, LLC0$00.00%−861−100.0%Sold out
VisionPoint Advisory Group, LLC0$00.00%−853−100.0%Sold out
Advisory Advocates, LLC0$00.00%−847−100.0%Sold out
Fortress Private Ledger, LLC0$00.00%−845−100.0%Sold out
River Wealth Advisors LLC0$00.00%−843−100.0%Sold out
Sigma Planning Corp0$00.00%−836−100.0%Sold out
Nations Financial Group Inc,0$00.00%−832−100.0%Sold out
Prosperity Financial Group, Inc.0$00.00%−826−100.0%Sold out
Legacy Financial Advisors, Inc.0$00.00%−821−100.0%Sold out
Childress Capital Advisors, LLC0$00.00%−820−100.0%Sold out
W Advisors, LLC0$00.00%−820−100.0%Sold out
Bridgewater Advisors Inc.0$00.00%−941−100.0%Sold out
Athena Wealth Management, LLC0$00.00%−811−100.0%Sold out
Pure Financial Advisors, Inc.0$00.00%−809−100.0%Sold out
BOS Asset Management, LLC0$00.00%−808−100.0%Sold out
Westshore Wealth, LLC0$00.00%−800−100.0%Sold out
Redwood Financial Network Corp0$00.00%−782−100.0%Sold out
CWA Asset Management Group, LLC0$00.00%−777−100.0%Sold out
Optiver Holding B.V.0$00.00%−706−100.0%Sold out
Sentry Investment Management LLC0$00.00%−660−100.0%Sold out
Payden & Rygel0$00.00%−500−100.0%Sold out
BXM Wealth LLC0$00.00%−28,950−100.0%Sold out
Laurel Wealth Advisors LLC0$00.00%−438−100.0%Sold out
Elyxium Wealth, LLC0$00.00%−389−100.0%Sold out
DV Trading LLC0$00.00%−360−100.0%Sold out
TCTC Holdings, LLC0$00.00%−328−100.0%Sold out
Reflection Asset Management0$00.00%−246−100.0%Sold out
Atlantic Trust, LLC0$00.00%−245−100.0%Sold out
Capula Management Ltd0$00.00%−243−100.0%Sold out
Osterweis Capital Management Inc0$00.00%−197−100.0%Sold out
Prosperity Bancshares Inc0$00.00%−164−100.0%Sold out
Vega Investment Solutions0$00.00%−160−100.0%Sold out
CBIZ Investment Advisory Services, LLC0$00.00%−155−100.0%Sold out
GoalVest Advisory LLC0$00.00%−115−100.0%Sold out
Cape Investment Advisory, Inc.0$00.00%−100−100.0%Sold out
Dorato Capital Management0$00.00%−82−100.0%Sold out
Gerber Kawasaki Wealth & Investment Management0$00.00%−31,855−100.0%Sold out
Wealth Watch Advisors, INC0$00.00%−71−100.0%Sold out