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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
Journey Advisory Group, LLC15,830$3.43M0.29%−1,115−6.6%Reduced
Susquehanna International Group, LLP15,800$3.42M0.00%−19,239−54.9%Reduced
Pinnacle Financial Partners, Inc.15,725$3.41M0.03%+489+3.2%Added
Bessemer Group Inc15,629$3.38M0.01%+1,438+10.1%Added
Mizuho Securities USA LLC15,535$3.36M0.08%−3,164−16.9%Reduced
Clearstead Advisors, LLC15,506$3.36M0.03%−1,107−6.7%Reduced
Romano Brothers and Company15,163$3.28M0.37%−9−0.1%Reduced
Private Management Group Inc15,076$3.27M0.09%−2,313−13.3%Reduced
Ballew Advisors, Inc14,905$3.26M1.84%+10+0.1%Added
Hartford Investment Management Co14,640$3.17M0.10%−251−1.7%Reduced
James Investment Research Inc14,534$3.15M0.35%−9,437−39.4%Reduced
Lido Advisors, LLC14,348$3.11M0.01%+5,790+67.7%Added
Coldstream Capital Management Inc14,087$3.05M0.04%+524+3.9%Added
Norinchukin Bank, The13,948$3.02M0.04%−41−0.3%Reduced
Wealthspire Advisors, LLC13,810$2.99M0.02%−588−4.1%Reduced
Oxbow Advisors, LLC13,800$2.99M0.25%−520−3.6%Reduced
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main13,653$2.96M0.00%−18,381−57.4%Reduced
First Nebraska Trust Co13,604$2.95M0.27%+1,315+10.7%Added
New Vernon Investment Management LLC13,508$2.93M3.11%+13,508New
Hennion & Walsh Asset Management, Inc.13,501$2.92M0.10%−3,794−21.9%Reduced
Legacy Wealth Management, LLC13,491$2.92M0.83%00.0%Unchanged
Blackstone Group Inc.13,368$2.90M0.01%+13,368New
Louisiana State Employees Retirement System13,100$2.84M0.05%00.0%Unchanged
RSM US Wealth Management LLC13,086$2.83M0.03%+3,673+39.0%Added
Arthur M. Cohen & Associates, LLC12,938$2.80M0.50%−756−5.5%Reduced
Nelson Capital Management, LLC12,908$2.80M0.34%−179−1.4%Reduced
Maryland State Retirement & Pension System12,638$2.74M0.06%00.0%Unchanged
B. Metzler seel. Sohn & Co. AG12,529$2.71M0.03%+850+7.3%Added
Elwood Capital Partners LP12,510$2.71M2.62%+7,510+150.2%Added
Abn Amro Investment Solutions12,501$2.71M0.04%+102+0.8%Added
Kayne Anderson Rudnick Investment Management LLC12,451$2.70M0.01%+7,238+138.8%Added
Neuberger Berman Group LLC12,368$2.68M0.00%−29−0.2%Reduced
Andra AP-fonden12,347$2.67M0.03%−25,853−67.7%Reduced
Trust Co of Toledo NA12,218$2.65M0.25%−300−2.4%Reduced
TD Private Client Wealth LLC11,886$2.57M0.05%−1,702−12.5%Reduced
New Mexico Educational Retirement Board11,850$2.57M0.08%00.0%Unchanged
Bollard Group LLC11,832$2.56M0.08%+33+0.3%Added
Vontobel Holding Ltd.11,777$2.55M0.01%+953+8.8%Added
Chicago Capital, LLC11,761$2.55M0.07%+48+0.4%Added
Tilia Fiduciary Partners, Inc.11,745$2.54M1.40%+919+8.5%Added
ING Groep NV11,671$2.53M0.02%−182−1.5%Reduced
Iams Wealth Management, LLC11,493$2.49M0.87%+1,936+20.3%Added
Allspring Global Investments Holdings, LLC11,263$2.44M0.00%+89+0.8%Added
Jane Street Group, LLC11,222$2.43M0.00%−1,574−12.3%Reduced
Dai-Ichi Life Insurance Company, Ltd11,007$2.38M0.07%−156−1.4%Reduced
New Age Alpha Advisors, LLC10,922$2.37M0.11%−1,636−13.0%Reduced
GAM Holding AG10,864$2.35M0.21%−9,050−45.4%Reduced
Grimes & Company, Inc.10,627$2.30M0.06%−2,244−17.4%Reduced
Concurrent Investment Advisors, LLC10,601$2.30M0.03%+7+0.1%Added
AG2R la Mondiale Gestion D'Actifs10,555$2.29M0.10%+140+1.3%Added
Crossmark Global Holdings, Inc.10,506$2.28M0.03%−726−6.5%Reduced
Omers Administration Corp10,388$2.25M0.01%+2,663+34.5%Added
McLean Asset Management Corp10,386$2.25M0.39%+10,386New
Manhattan West Asset Management, LLC10,365$2.24M0.44%+3,495+50.9%Added
Whittier Trust Co10,023$2.20M0.02%−513−4.9%Reduced
MAI Capital Management10,028$2.17M0.01%−418−4.0%Reduced
Tokio Marine Asset Management Co Ltd10,006$2.17M0.08%+686+7.4%Added
Leavell Investment Management, Inc.9,915$2.15M0.09%+144+1.5%Added
Davenport & Co LLC9,860$2.14M0.01%−7,421−42.9%Reduced
SIH Partners, LLLP9,732$2.11M0.06%+9,732New
Jefferies Financial Group Inc.9,707$2.10M0.03%+5,590+135.8%Added
HB Wealth Management, LLC9,692$2.10M0.01%+441+4.8%Added
Ancora Advisors, LLC9,683$2.10M0.04%−18−0.2%Reduced
Argo Wealth Advisory, LLC9,629$2.09M1.22%+374+4.0%Added
Brinker Capital Investments, LLC9,595$2.08M0.02%−498−4.9%Reduced
Northwestern Mutual Wealth Management Co9,581$2.08M0.00%−1,458−13.2%Reduced
Saudi Central Bank9,479$2.05M0.04%+9,479New
Umb Bank N A9,469$2.05M0.03%+247+2.7%Added
Envestnet Portfolio Solutions, Inc.9,372$2.03M0.01%−17,791−65.5%Reduced
Panagora Asset Management Inc9,236$2.00M0.01%−800−8.0%Reduced
Anchor Investment Management, LLC9,189$1.99M0.17%+835+10.0%Added
Knollwood Investment Advisory, LLC9,168$1.99M0.20%00.0%Unchanged
Equitable Holdings, Inc.8,675$1.98M0.01%+5,252+153.4%Added
Principal Securities, Inc.9,149$1.98M0.03%−2,856−23.8%Reduced
E. Ohman J:or Asset Management AB9,063$1.96M0.05%00.0%Unchanged
Intech Investment Management LLC9,023$1.95M0.02%−2,465−21.5%Reduced
Flputnam Investment Management Co8,728$1.89M0.03%−1,151−11.7%Reduced
Pine Valley Investments Ltd Liability Co8,725$1.89M0.09%+2,151+32.7%Added
Y-Intercept (Hong Kong) Ltd8,580$1.86M0.04%+8,580New
Metis Global Partners, LLC8,556$1.85M0.05%−901−9.5%Reduced
Skopos Labs, Inc.8,378$1.81M0.06%+1,217+17.0%Added
Harbor Advisors LLC8,375$1.81M0.26%00.0%Unchanged
Raiffeisen Bank International AG8,377$1.81M0.03%+4,374+109.3%Added
Apollon Wealth Management, LLC8,307$1.80M0.03%−653−7.3%Reduced
Pacific Capital Partners Ltd8,290$1.80M1.77%+8,290New
Northwestern Mutual Investment Management Company, LLC8,222$1.78M0.03%+16+0.2%Added
Old North State Trust, LLC8,193$1.77M1.05%−126−1.5%Reduced
Meiji Yasuda Life Insurance Co8,183$1.77M0.06%00.0%Unchanged
Arkadios Wealth Advisors8,182$1.77M0.03%+380+4.9%Added
Wiley Bros.-Aintree Capital, LLC8,030$1.74M0.01%+598+8.0%Added
Kestra Private Wealth Services, LLC7,971$1.73M0.02%+5,710+252.5%Added
Dakota Wealth Management7,970$1.73M0.04%−6,913−46.4%Reduced
Merit Financial Group, LLC7,820$1.69M0.01%+245+3.2%Added
Provident Wealth Management, LLC7,819$1.69M0.51%00.0%Unchanged
Stonebridge Capital Management Inc7,762$1.68M0.76%+7,762New
AE Wealth Management LLC7,712$1.67M0.01%+901+13.2%Added
Fulcrum Asset Management LLP7,557$1.63M0.25%+211+2.9%Added
Prime Capital Investment Advisors, LLC7,515$1.63M0.02%+439+6.2%Added
Bright Rock Capital Management, LLC7,500$1.62M0.32%00.0%Unchanged
Trueblood Wealth Management, LLC7,475$1.62M0.63%−307−3.9%Reduced