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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, Q2 2025

Institutional positions in Arthur J. Gallagher & Co. as of Jun 30, 2025. 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
1,380
+36 vs. Q1 2025
Shares held
228.1M
−322.6K (−0.1%) vs. Q1 2025
Total value
$72.9B
−$5.88B (−7.5%) vs. Q1 2025
New holders
140
564 more added
Sold out
104
475 more reduced

16 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2025: 1,380 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 heldQ2 2025: $72.9B
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 20251,342$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, Q2 2025

Shares, value and share of portfolio for each institution holding Arthur J. Gallagher & Co.; share changes are against Q1 2025.

Institutions holding AJG in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Vanguard Group Inc31,096,542$9.95B0.16%+685,278+2.3%Added
BlackRock, Inc.18,983,067$6.08B0.12%−1,159,457−5.8%Reduced
JPMorgan Chase & Co17,008,328$5.44B0.37%−364,417−2.1%Reduced
FMR LLC13,063,193$4.18B0.24%−665,039−4.8%Reduced
Capital World Investors11,681,821$3.74B0.54%+107,638+0.9%Added
State Street Corp10,743,493$3.44B0.13%+117,646+1.1%Added
Capital International Investors7,149,487$2.29B0.39%−76,459−1.1%Reduced
Morgan Stanley7,092,653$2.27B0.15%−48,811−0.7%Reduced
Geode Capital Management, LLC5,911,460$1.88B0.13%−713,863−10.8%Reduced
Norges Bank4,798,919$1.54B0.19%+90,540+1.9%Added
Wellington Management Group LLP2,875,503$920.5M0.17%−84,170−2.8%Reduced
Massachusetts Financial Services Co2,734,635$875.4M0.28%−138,414−4.8%Reduced
WCM Investment Management, LLC2,464,662$783.1M1.79%+128,071+5.5%Added
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.2,381,835$762.5M0.61%+94,940+4.2%Added
Invesco Ltd.2,354,632$753.8M0.13%+503,205+27.2%Added
Northern Trust Corp2,348,343$751.8M0.10%−16,416−0.7%Reduced
Brown Advisory Inc2,286,798$732.1M0.96%−503,161−18.0%Reduced
Principal Financial Group Inc2,273,303$727.7M0.38%+202,642+9.8%Added
Charles Schwab Investment Management Inc2,036,794$652.0M0.11%−26,885−1.3%Reduced
UBS Asset Management Americas Inc1,784,809$571.4M0.12%+255,243+16.7%Added
Janus Henderson Group PLC1,548,291$495.5M0.24%+17,916+1.2%Added
Capital Research Global Investors1,544,814$494.5M0.10%+82,632+5.7%Added
Goldman Sachs Group Inc1,493,812$478.2M0.08%+35,699+2.4%Added
Bank of America Corp1,463,879$468.6M0.04%+93,250+6.8%Added
Envestnet Asset Management Inc1,397,218$447.3M0.13%−28,748−2.0%Reduced
Bank of New York Mellon Corp1,391,782$445.5M0.08%−95,195−6.4%Reduced
Legal & General Group Plc1,316,494$421.4M0.10%+6,896+0.5%Added
FIL Ltd1,210,440$387.5M0.33%−162,249−11.8%Reduced
Alliancebernstein L.P.1,126,093$360.5M0.12%−83,331−6.9%Reduced
Sands Capital Management, LLC1,121,249$358.9M1.03%+918,618+453.3%Added
Brown Brothers Harriman & Co1,103,478$353.2M2.27%−8,990−0.8%Reduced
APG Asset Management N.V.1,197,868$326.7M0.97%+530,014+79.4%Added
Findlay Park Partners LLP944,101$302.2M3.12%−228,100−19.5%Reduced
Baillie Gifford & Co940,528$301.1M0.22%−96,135−9.3%Reduced
Amundi908,339$286.8M0.10%+352,001+63.3%Added
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main879,739$281.6M0.29%−312,008−26.2%Reduced
Deutsche Bank AG867,905$277.8M0.10%+342,226+65.1%Added
California Public Employees Retirement System858,170$274.7M0.18%−134,509−13.6%Reduced
UBS Group AG846,124$270.9M0.06%−303,343−26.4%Reduced
Guinness Asset Management LTD831,166$266.0M4.76%+12,118+1.5%Added
Winslow Capital Management, LLC828,466$265.2M0.89%+4,844+0.6%Added
Manufacturers Life Insurance Company, The801,588$256.6M0.23%−82,728−9.4%Reduced
TD Asset Management Inc782,914$250.6M0.21%−135,095−14.7%Reduced
Barclays PLC777,911$249.0M0.10%+140,877+22.1%Added
Swiss National Bank774,100$247.8M0.15%+69,600+9.9%Added
Balyasny Asset Management LLC770,394$246.6M0.56%+768,541+41,475.5%Added
Nuveen, LLC740,655$237.1M0.07%+43,560+6.2%Added
Boston Partners737,299$234.7M0.26%+4,346+0.6%Added
Viking Global Investors LPSuperinvestorViking Global Investors725,795$232.3M0.67%+59,243+8.9%Added
Dimensional Fund Advisors LP723,640$231.6M0.05%−12,527−1.7%Reduced
Royal Bank of Canada710,262$227.4M0.04%+124,329+21.2%Added
Voya Investment Management LLC709,390$226.3M0.23%−55,551−7.3%Reduced
Beck Mack & Oliver LLC701,443$224.5M4.29%−81,466−10.4%Reduced
Chilton Investment Co LLC692,603$221.7M4.92%+13,847+2.0%Added
Mawer Investment Management Ltd.681,510$218.2M1.11%−57,797−7.8%Reduced
Sumitomo Mitsui Trust Holdings, Inc.590,461$189.0M0.12%+26,157+4.6%Added
Raymond James Financial Inc581,582$186.2M0.06%+351+0.1%Added
Lord, Abbett & Co. LLC581,217$186.1M0.60%−72,871−11.1%Reduced
HSBC Holdings PLC572,809$182.8M0.12%+15,585+2.8%Added
Bank Julius Baer & Co. Ltd, Zurich567,540$181.7M0.54%−5,499−1.0%Reduced
Bessemer Group Inc533,819$170.9M0.28%−93,100−14.9%Reduced
Unisphere Establishment530,300$169.8M1.37%00.0%Unchanged
American Century Companies Inc530,255$169.7M0.09%+235,074+79.6%Added
Global Retirement Partners, LLC502,693$160.9M3.99%+502,693New
Adage Capital Partners GP, L.L.C.494,603$158.3M0.27%+207,500+72.3%Added
Wells Fargo & Company478,342$153.1M0.03%+44,806+10.3%Added
National Pension Service470,347$150.6M0.13%−33,756−6.7%Reduced
Stonehage Fleming Financial Services Holdings Ltd460,359$147.4M4.28%+6,139+1.4%Added
Rhumbline Advisers452,830$145.0M0.12%−6,829−1.5%Reduced
Kovitz Investment Group Partners, LLC440,539$141.0M0.60%−47,929−9.8%Reduced
CCLA Investment Management Ltd422,130$135.1M2.21%+25,818+6.5%Added
Millennium Management LLC408,818$130.9M0.12%−16,081−3.8%Reduced
Congress Asset Management Co401,712$128.6M0.88%−55,865−12.2%Reduced
Ci Investments Inc.399,577$127.9M0.48%−410−0.1%Reduced
Price T Rowe Associates Inc395,654$126.7M0.01%−30,626−7.2%Reduced
California State Teachers Retirement System389,897$124.8M0.14%+38,758+11.0%Added
SEI Investments Co384,822$123.2M0.14%−2,512−0.6%Reduced
Allianz Asset Management GmbH378,156$121.1M0.16%−80,591−17.6%Reduced
Assenagon Asset Management S.A.368,437$117.9M0.19%+249,616+210.1%Added
Woodline Partners LP363,575$116.4M0.61%+351,916+3,018.4%Added
BNP Paribas Arbitrage, SA362,333$116.0M0.09%+10,797+3.1%Added
Regions Financial Corp361,047$115.6M0.80%−28,237−7.3%Reduced
Franklin Resources Inc357,498$114.4M0.03%−170,691−32.3%Reduced
Fenimore Asset Management Inc356,342$114.1M2.28%−10,562−2.9%Reduced
Renaissance Technologies LLC349,600$111.9M0.15%+30,600+9.6%Added
New York State Common Retirement Fund342,723$109.7M0.15%+159,928+87.5%Added
Nomura Asset Management Co Ltd334,279$107.0M0.29%−45,973−12.1%Reduced
Natixis Advisors, L.P.329,935$105.6M0.17%−56,944−14.7%Reduced
Universal- Beteiligungs- und Servicegesellschaft mbH323,355$103.5M0.18%−11,984−3.6%Reduced
Westfield Capital Management Co LP321,606$103.0M0.43%−3,029−0.9%Reduced
CIBC Private Wealth Group, LLC307,672$98.5M0.18%+2,472+0.8%Added
Zacks Investment Management299,068$95.7M0.82%+3,407+1.2%Added
Welch & Forbes LLC294,591$94.3M1.18%−3,295−1.1%Reduced
Woodley Farra Manion Portfolio Management Inc270,941$86.7M4.08%−3,549−1.3%Reduced
Great West Life Assurance Co262,869$84.2M0.13%+22,040+9.2%Added
Aviva PLC263,000$84.2M0.17%−141,061−34.9%Reduced
Kornitzer Capital Management Inc258,560$82.8M1.67%−4,667−1.8%Reduced
Comerica Bank257,697$82.5M0.32%+670.0%Added
Citigroup Inc254,448$81.5M0.06%−13,744−5.1%Reduced
LPL Financial LLC238,844$76.5M0.03%+13,462+6.0%Added