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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
Coston, McIsaac & Partners4$00.00%00.0%Unchanged
Loomis Sayles & Co L P0$370.00%0Unchanged
Y.D. More Investments Ltd164$1120.00%−21−11.4%Reduced
Maseco LLP1$2170.00%00.0%Unchanged
Curio Wealth, LLC1$2170.00%+1New
Napier Financial, LLC1$2170.00%+1New
3 Factor Indexing, LLC1$2170.00%+1New
United Community Bank2$4330.00%−81−97.6%Reduced
HFM Investment Advisors, LLC2$4330.00%−3−60.0%Reduced
Elevated Capital Advisors, LLC2$4330.00%00.0%Unchanged
IMA Wealth, Inc.2$4330.00%00.0%Unchanged
MBM Wealth Consultants, LLC2$4330.00%+2New
TopTier Wealth Management, LLC2$4330.00%+2New
Breakwater Investment Management2$4340.00%−6−75.0%Reduced
Redwood Park Advisors LLC2$4340.00%−1−33.3%Reduced
DecisionPoint Financial, LLC2$4340.00%00.0%Unchanged
Seneschal Advisors, LLC2$4340.00%00.0%Unchanged
Purpose Unlimited Inc.2$4340.00%+2New
Triumph Capital Management3$6500.00%00.0%Unchanged
Newbridge Financial Services Group, Inc.3$6500.00%00.0%Unchanged
Davis Capital Management3$6500.00%+1+50.0%Added
GHP Investment Advisors, Inc.3$6500.00%+3New
Sunrise Financial Services, LLC4$8660.00%−91−95.8%Reduced
PFS Partners, LLC4$8670.00%00.0%Unchanged
Sound Income Strategies, LLC5$1.08K0.00%−10−66.7%Reduced
Hughes Financial Services, LLC5$1.08K0.00%−19−79.2%Reduced
TFC Financial Management5$1.08K0.00%−2−28.6%Reduced
Synergy Investment Management, LLC5$1.08K0.00%+5New
Lloyd Advisory Services, LLC.5$1.09K0.00%+5New
Kingdom Financial Group LLC.5$1.09K0.00%+5New
Financial Consulate, Inc6$1.30K0.00%+6New
Westend Capital Management, LLC7$1.52K0.00%00.0%Unchanged
Provenance Wealth Advisors, LLC7$1.52K0.00%00.0%Unchanged
Asset Dedication, LLC8$1.73K0.00%−58−87.9%Reduced
WestEnd Advisors, LLC8$1.73K0.00%00.0%Unchanged
Benson Wealth Management INC8$1.73K0.00%00.0%Unchanged
American Capital Advisory, LLC8$1.73K0.00%+1+14.3%Added
Quaker Wealth Management, LLC8$1.73K0.00%+2+33.3%Added
Investors Research Corp8$1.73K0.00%+8New
POM Investment Strategies, LLC8$1.73K0.00%+8New
NBT Bank N A9$1.95K0.00%+9New
Vermillion Wealth Management, Inc.9$1.95K0.00%+9New
Bard Associates Inc9$1.95K0.00%+9New
Capital Advisors, Ltd. LLC9$2.00K0.00%−3−25.0%Reduced
PayPay Securities Corp9$2.02K0.07%+9New
Evelyn Partners Investment Management LLP10$2.17K0.00%00.0%Unchanged
Key Capital Management, INC10$2.17K0.00%+7+233.3%Added
First Pacific Financial10$2.17K0.00%+10New
Ameriflex Group, Inc.10$2.25K0.00%00.0%Unchanged
Longfellow Investment Management Co LLC11$2.38K0.00%00.0%Unchanged
C M Bidwell & Associates Ltd12$2.60K0.00%00.0%Unchanged
MPWM Advisory Solutions, LLC12$2.60K0.00%00.0%Unchanged
Dogwood Wealth Management LLC13$2.82K0.00%−6−31.6%Reduced
Cranbrook Wealth Management, LLC13$2.82K0.00%00.0%Unchanged
Tidemark, LLC13$2.82K0.00%00.0%Unchanged
Portus Wealth Advisors, LLC13$2.82K0.00%+13New
Hilton Head Capital Partners, LLC14$3.03K0.00%00.0%Unchanged
Albion Financial Group14$3.03K0.00%+1+7.7%Added
Team Financial Group, LLC15$3.18K0.00%00.0%Unchanged
Salem Investment Counselors Inc15$3.25K0.00%+15New
Basepoint Wealth LLC15$3.25K0.00%+15New
Torren Management, LLC16$3.46K0.00%−9−36.0%Reduced
Bay Harbor Wealth Management, LLC16$3.46K0.00%+3+23.1%Added
Private Wealth Management Group, LLC16$3.47K0.00%−8−33.3%Reduced
Valued Wealth Advisors LLC16$3.49K0.00%00.0%Unchanged
South State Corp.17$3.68K0.00%−79−82.3%Reduced
Principia Wealth Advisory, LLC18$3.90K0.00%+10+125.0%Added
Bare Financial Services, Inc18$3.90K0.00%+12+200.0%Added
Richardson Capital Management LLC18$3.90K0.00%+18New
Legacy Wealth Managment, LLC21$4.55K0.00%+4+23.5%Added
Alerus Financial NA22$4.76K0.00%00.0%Unchanged
True Wealth Design, LLC22$4.76K0.00%+15+214.3%Added
Activest Wealth Management22$4.76K0.00%+22New
1015 Capital Partners, LLC23$4.98K0.00%−89−79.5%Reduced
Addison Advisors LLC24$5.20K0.00%−6−20.0%Reduced
Essential Partners LLC24$5.20K0.00%+22+1,100.0%Added
Cornerstone Financial Management LLC26$5.63K0.01%−4−13.3%Reduced
Leonteq Securities AG28$6.06K0.00%−519−94.9%Reduced
Imprint Wealth LLC28$6.06K0.03%−23−45.1%Reduced
Westfuller Advisors, LLC28$6.07K0.00%−17−37.8%Reduced
Aspect Partners, LLC29$6.28K0.00%−2−6.5%Reduced
Aventus Investment Advisors, Inc.30$6.50K0.01%00.0%Unchanged
Highline Wealth Partners LLC30$6.50K0.00%+20+200.0%Added
Old Point Trust & Financial Services N A31$6.71K0.00%00.0%Unchanged
Armstrong Advisory Group, Inc32$6.93K0.00%00.0%Unchanged
Greykasell Wealth Strategies, Inc.32$6.93K0.00%00.0%Unchanged
Brown, Lisle/Cummings, Inc.32$6.93K0.00%+12+60.0%Added
Crewe Advisors LLC33$7.09K0.00%00.0%Unchanged
Advocate Investing Services LLC33$7.15K0.01%00.0%Unchanged
Financial Management Professionals, Inc.34$7.36K0.00%−11−24.4%Reduced
Cetera Trust Company, N.A34$7.36K0.00%00.0%Unchanged
Creative Financial Designs Inc35$7.58K0.00%+1+2.9%Added
Avion Wealth40$8.00K0.00%+13+48.1%Added
Rakuten Securities, Inc.37$8.01K0.00%−10−21.3%Reduced
Fortitude Family Office, LLC38$8.23K0.00%+4+11.8%Added
SHP Wealth Management39$8.46K0.00%+24+160.0%Added
Bell Investment Advisors, Inc40$8.66K0.00%+3+8.1%Added
Hilltop National Bank41$8.88K0.00%−143−77.7%Reduced
Titan Wealth (CI) Ltd41$8.88K0.00%00.0%Unchanged
Clear Street Markets LLC42$9.10K0.00%−944−95.7%Reduced