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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 2021

Institutional positions in Arthur J. Gallagher & Co. as of Mar 31, 2021. 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
732
No complete 13F data for Q4 2020
Shares held
165.4M
No complete 13F data for Q4 2020
Total value
$20.6B
No complete 13F data for Q4 2020

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 2021: 732 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 2021: $20.6B
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 2021

Shares, value and share of portfolio for each institution holding Arthur J. Gallagher & Co..

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding AJG in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Westpac Banking Corp107,714$13.4M0.15%––
AQR Capital Management LLC108,750$13.6M0.02%––
Schroder Investment Management Group108,866$13.6M0.02%––
Truist Financial Corp111,117$13.9M0.02%––
Susquehanna Fundamental Investments, LLC114,170$14.2M0.24%––
SEI Investments Co114,514$14.3M0.04%––
North Point Portfolio Managers Corp114,611$14.3M2.07%––
Healthcare of Ontario Pension Plan Trust Fund114,631$14.3M0.04%––
Capital Bank & Trust Co116,773$14.6M0.17%––
Gillson Capital LP117,226$14.6M1.23%––
Rathbone Brothers plc118,270$14.8M0.19%––
PhiloSmith Capital Corp122,725$15.3M6.71%––
Natixis Advisors, L.P.124,931$15.6M0.08%––
State of New Jersey Common Pension Fund D125,338$15.6M0.05%––
Toronto Dominion Bank125,533$15.7M0.03%––
Prospector Partners LLC126,800$15.8M2.03%––
Guggenheim Capital LLC127,903$16.0M0.11%––
Chevy Chase Trust Holdings, Inc.130,064$16.2M0.06%––
Vaughan Nelson Investment Management, L.P.147,249$18.4M0.20%––
Professional Advisory Services Inc154,682$19.3M2.96%––
US Bancorp162,477$20.3M0.04%––
Chartwell Investment Partners, LLC165,063$20.6M0.62%––
NFJ Investment Group, LLC166,084$20.7M0.42%––
Allianz Asset Management GmbH170,562$21.3M0.02%––
GWM Advisors LLC171,800$21.4M0.64%––
New York State Teachers Retirement System173,843$21.7M0.05%––
Russell Investments Group, Ltd.173,789$21.7M0.04%––
Prudential Financial Inc179,214$22.4M0.03%––
Great West Life Assurance Co183,708$22.8M0.06%––
Robeco Institutional Asset Management B.V.182,915$22.8M0.06%––
William Blair Investment Management, LLC189,172$23.6M0.08%––
BNP Paribas Arbitrage, SA193,366$24.1M0.05%––
Cornerstone Capital, Inc.201,651$25.2M3.04%––
Franklin Resources Inc207,317$25.9M0.01%––
State Board of Administration of Florida Retirement System212,667$26.5M0.05%––
HSBC Holdings PLC215,499$27.0M0.04%––
Connor, Clark & Lunn Investment Management Ltd.222,230$27.7M0.15%––
Teacher Retirement System of Texas225,906$28.2M0.16%––
Balyasny Asset Management LLC227,492$28.4M0.17%––
Comerica Bank205,863$28.4M0.17%––
Epoch Investment Partners, Inc.232,306$29.0M0.14%––
Gateway Investment Advisers LLC244,817$30.5M0.33%––
Welch & Forbes LLC252,245$31.5M0.58%––
Alliancebernstein L.P.253,675$31.7M0.01%––
United Capital Financial Advisers, LLC254,676$31.8M0.18%––
Citigroup Inc258,687$32.3M0.03%––
AXA S.A.268,150$33.5M0.10%––
Principal Financial Group Inc269,063$33.6M0.02%––
Amundi Asset Management US, Inc.272,368$34.0M0.03%––
Panagora Asset Management Inc273,837$34.2M0.19%––
State of Tennessee, Treasury Department281,720$35.1M0.14%––
National Pension Service286,009$35.7M0.07%––
Rhumbline Advisers305,374$38.1M0.05%––
Wells Fargo & Company311,248$38.8M0.01%––
Retirement Systems of Alabama313,863$39.2M0.15%––
Thrivent Financial for Lutherans314,132$39.2M0.09%––
Welch Group, LLC318,397$39.7M2.86%––
Bank of Montreal300,742$39.8M0.03%––
Arrowstreet Capital, Limited Partnership331,121$41.3M0.06%––
Waddell & Reed Financial Inc332,256$41.5M0.09%––
Mountain Pacific Investment Advisers Inc334,674$41.8M2.78%––
New York State Common Retirement Fund338,686$42.3M0.05%––
California State Teachers Retirement System347,586$43.4M0.06%––
Cooper Investors Pty Ltd354,413$44.2M3.29%––
UBS Group AG358,242$44.7M0.02%––
Aviva PLC361,602$45.1M0.22%––
Adage Capital Partners GP, L.L.C.362,803$45.3M0.09%––
Virginia Retirement Systems Et Al378,000$47.2M0.46%––
Barclays PLC378,718$47.3M0.05%––
Zacks Investment Management383,128$47.8M0.85%––
Natixis392,432$49.0M0.16%––
Guinness Asset Management LTD393,060$49.0M3.09%––
Kornitzer Capital Management Inc398,825$49.8M0.80%––
Woodley Farra Manion Portfolio Management Inc413,243$51.6M4.31%––
Dearborn Partners LLC428,956$53.5M2.28%––
Canada Pension Plan Investment Board444,596$55.5M0.07%––
Raymond James & Associates459,694$57.4M0.06%––
Martingale Asset Management L P460,215$57.4M0.66%––
Old Republic International Corporation471,400$58.8M1.39%––
TD Asset Management Inc490,973$61.3M0.07%––
Parametric Portfolio Associates LLC491,459$61.3M0.04%––
Global Retirement Partners, LLC519,936$64.9M7.60%––
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main545,948$68.1M0.13%––
First Trust Advisors LP553,307$69.1M0.08%––
M&G Investment Management Ltd573,823$71.7M0.60%––
Westfield Capital Management Co LP577,238$72.0M0.45%––
Eaton Vance Management596,514$74.4M0.11%––
Fenimore Asset Management Inc598,572$74.7M1.93%––
Regions Financial Corp602,958$75.2M0.68%––
Goldman Sachs Group Inc603,140$75.3M0.02%––
Fort Pitt Capital Group, LLC604,707$75.4M3.38%––
Sumitomo Mitsui Trust Holdings, Inc.614,221$76.6M0.05%––
American Century Companies Inc622,221$77.6M0.06%––
Citadel Advisors LLC624,465$77.9M0.08%––
Credit Suisse AG653,442$81.5M0.06%––
Envestnet Asset Management Inc683,842$85.3M0.06%––
Deutsche Bank AG694,035$86.6M0.05%––
Nuveen Asset Management, LLC695,273$86.7M0.03%––
Morgan Stanley811,145$101.2M0.01%––
UBS Asset Management Americas Inc813,013$101.4M0.04%––