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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, Q3 2025

Institutional positions in Arthur J. Gallagher & Co. as of Sep 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
1,341
−21 vs. Q2 2025
Shares held
225.4M
+2.22M (+1.0%) vs. Q2 2025
Total value
$69.7B
−$1.65B (−2.3%) vs. Q2 2025
New holders
115
511 more added
Sold out
136
487 more reduced

17 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2025: 1,341 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 heldQ3 2025: $69.7B
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, Q3 2025

Shares, value and share of portfolio for each institution holding Arthur J. Gallagher & Co.; share changes are against Q2 2025.

Institutions holding AJG in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Benjamin Edwards Inc129,719$40.2M0.45%+4,264+3.4%Added
Chevy Chase Trust Holdings, Inc.130,885$40.5M0.11%−4,485−3.3%Reduced
National Bank of Canada135,271$41.9M0.05%−62,305−31.5%Reduced
State of Wisconsin Investment Board136,177$42.2M0.10%−7,935−5.5%Reduced
Voya Investment Management LLC136,476$42.3M0.04%−572,914−80.8%Reduced
Cincinnati Financial Corp138,259$42.8M0.85%+138,259New
Beacon Pointe Advisors, LLC141,074$43.7M0.37%+953+0.7%Added
Anchor Capital Advisors LLC144,228$44.7M1.29%+20,072+16.2%Added
Prudential Financial Inc144,329$44.7M0.05%−14,138−8.9%Reduced
British Columbia Investment Management Corp145,171$45.0M0.26%−3,367−2.3%Reduced
Moore Capital Management, LP145,184$45.0M0.89%+16,752+13.0%Added
Fort Washington Investment Advisors Inc145,220$45.0M0.24%+12,418+9.4%Added
AQR Capital Management LLC146,664$45.1M0.03%+12,161+9.0%Added
United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund146,105$45.3M1.65%00.0%Unchanged
Korea Investment CORP148,786$46.1M0.09%+7,111+5.0%Added
Woodley Farra Manion Portfolio Management Inc150,286$46.5M2.19%−120,655−44.5%Reduced
Royal London Asset Management Ltd150,584$46.6M0.10%−1,586−1.0%Reduced
Danske Bank A/S151,970$47.1M0.12%−79,372−34.3%Reduced
Bank of Nova Scotia156,239$48.4M0.09%+129,686+488.4%Added
KBC Group NV156,714$48.5M0.12%+9,752+6.6%Added
Federation des caisses Desjardins du Quebec156,983$48.6M0.19%+21,453+15.8%Added
Clark Capital Management Group, Inc.157,699$48.8M0.31%+2,396+1.5%Added
Ci Investments Inc.158,723$49.2M0.18%−240,854−60.3%Reduced
Mitsubishi UFJ Trust & Banking Corp161,976$50.2M0.11%−13,844−7.9%Reduced
Storebrand Asset Management AS169,748$52.6M0.14%+2,233+1.3%Added
MML Investors Services, LLC175,907$54.5M0.15%−6,867−3.8%Reduced
Fiera Capital Corp175,945$54.5M0.18%+175,945New
New York State Teachers Retirement System176,605$54.7M0.11%−470.0%Reduced
Employees Retirement System of Texas177,100$54.9M0.44%−37,500−17.5%Reduced
Gateway Investment Advisers LLC183,496$56.8M0.55%+240.0%Added
Cincinnati Insurance Co183,710$56.9M0.88%+183,710New
Standard Life Aberdeen plc186,425$57.0M0.09%+46,629+33.4%Added
Stifel Financial Corp184,806$57.2M0.05%−30,969−14.4%Reduced
King Luther Capital Management Corp188,346$58.3M0.24%−34,426−15.5%Reduced
Old Republic International Corporation190,800$59.1M2.19%00.0%Unchanged
Millennium Management LLC195,826$60.7M0.05%−212,992−52.1%Reduced
Aviva PLC198,056$61.3M0.11%−64,944−24.7%Reduced
Retirement Systems of Alabama201,076$62.3M0.21%+23,433+13.2%Added
Citigroup Inc202,521$62.7M0.04%−51,927−20.4%Reduced
SEI Investments Co204,836$63.5M0.07%−179,986−46.8%Reduced
GWM Advisors LLC208,890$64.7M0.29%−418−0.2%Reduced
Capital International Inc215,889$66.9M0.53%+42,084+24.2%Added
Eventide Asset Management, LLC216,693$67.1M1.10%+6,122+2.9%Added
LPL Financial LLC217,909$67.5M0.02%−20,935−8.8%Reduced
Westwood Holdings Group Inc.221,751$68.7M0.49%−14,814−6.3%Reduced
Comerica Bank222,225$68.8M0.26%−35,472−13.8%Reduced
State Board of Administration of Florida Retirement System224,763$69.6M0.12%−4,201−1.8%Reduced
Welch Group, LLC226,514$70.2M2.74%+2,476+1.1%Added
Bank of Montreal238,322$73.8M0.03%+12,999+5.8%Added
Ameriprise Financial Inc239,487$74.2M0.02%+18,168+8.2%Added
Kornitzer Capital Management Inc247,099$76.5M1.54%−11,461−4.4%Reduced
Great West Life Assurance Co267,316$81.7M0.12%+4,447+1.7%Added
Westfield Capital Management Co LP267,709$82.9M0.35%−53,897−16.8%Reduced
Nissay Asset Management Corp272,527$84.4M0.47%+150,111+122.6%Added
CIBC Private Wealth Group, LLC273,659$84.8M0.15%−34,013−11.1%Reduced
Welch & Forbes LLC292,770$90.7M1.09%−1,821−0.6%Reduced
Adage Capital Partners GP, L.L.C.293,103$90.8M0.14%−201,500−40.7%Reduced
Zacks Investment Management296,878$92.0M0.73%−2,190−0.7%Reduced
Russell Investments Group, Ltd.303,854$94.1M0.11%+69,173+29.5%Added
Credit Agricole S A307,798$95.3M0.32%+307,798New
New York State Common Retirement Fund327,639$101.5M0.13%−15,084−4.4%Reduced
Natixis Advisors, L.P.335,248$103.8M0.15%+5,313+1.6%Added
BNP Paribas Arbitrage, SA348,430$107.9M0.08%−13,903−3.8%Reduced
Fenimore Asset Management Inc355,301$110.1M2.21%−1,041−0.3%Reduced
Regions Financial Corp356,875$110.5M0.72%−4,172−1.2%Reduced
Universal- Beteiligungs- und Servicegesellschaft mbH358,048$110.9M0.18%+34,693+10.7%Added
Assenagon Asset Management S.A.361,006$111.8M0.17%−7,431−2.0%Reduced
American Century Companies Inc366,652$113.6M0.06%−163,603−30.9%Reduced
California State Teachers Retirement System386,510$119.7M0.12%−3,387−0.9%Reduced
TD Asset Management Inc388,058$120.2M0.10%−394,856−50.4%Reduced
Nomura Asset Management Co Ltd388,480$120.3M0.31%+54,201+16.2%Added
Price T Rowe Associates Inc396,461$122.8M0.01%+807+0.2%Added
Congress Asset Management Co399,210$123.7M0.82%−2,502−0.6%Reduced
Renaissance Technologies LLC400,500$124.1M0.16%+50,900+14.6%Added
Franklin Resources Inc426,049$132.0M0.03%+68,551+19.2%Added
Kovitz Investment Group Partners, LLC445,096$137.9M0.54%+4,557+1.0%Added
Wells Fargo & Company447,567$138.6M0.03%−30,775−6.4%Reduced
Rhumbline Advisers451,928$140.0M0.11%−902−0.2%Reduced
Stonehage Fleming Financial Services Holdings Ltd462,596$143.3M4.06%+2,237+0.5%Added
CCLA Investment Management Ltd475,182$147.3M2.36%+53,052+12.6%Added
National Pension Service477,628$147.9M0.11%+7,281+1.5%Added
Global Retirement Partners, LLC503,025$155.8M3.49%+332+0.1%Added
Bessemer Group Inc533,333$165.2M0.25%−486−0.1%Reduced
Unisphere Establishment537,500$166.5M1.31%+7,200+1.4%Added
Manufacturers Life Insurance Company, The542,875$168.1M0.14%−258,713−32.3%Reduced
Lord, Abbett & Co. LLC545,105$168.8M0.50%−36,112−6.2%Reduced
HSBC Holdings PLC559,881$173.0M0.10%−12,928−2.3%Reduced
Bank Julius Baer & Co. Ltd, Zurich559,143$173.2M0.49%−8,397−1.5%Reduced
Amundi560,869$173.4M0.06%−347,470−38.3%Reduced
Allianz Asset Management GmbH570,565$176.7M0.22%+192,409+50.9%Added
Sumitomo Mitsui Trust Holdings, Inc.595,365$184.4M0.11%+4,904+0.8%Added
Raymond James Financial Inc597,620$185.1M0.06%+16,038+2.8%Added
Balyasny Asset Management LLC628,509$194.7M0.39%−141,885−18.4%Reduced
Mawer Investment Management Ltd.646,298$200.2M1.04%−35,212−5.2%Reduced
Nuveen, LLC686,536$212.6M0.06%−54,119−7.3%Reduced
Dimensional Fund Advisors LP695,538$215.4M0.05%−28,102−3.9%Reduced
Beck Mack & Oliver LLC734,079$227.4M4.14%+32,636+4.7%Added
Swiss National Bank738,300$228.7M0.13%−35,800−4.6%Reduced
Chilton Investment Co LLC765,795$237.2M4.83%+73,192+10.6%Added
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main808,952$250.6M0.23%−70,787−8.0%Reduced