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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 2025

Institutional positions in Arthur J. Gallagher & Co. as of Mar 31, 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
1,360
+58 vs. Q4 2024
Shares held
228.9M
−2.17M (−0.9%) vs. Q4 2024
Total value
$79.0B
+$13.4B (+20.4%) vs. Q4 2024
New holders
179
549 more added
Sold out
121
448 more reduced

23 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: 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 2025: 1,360 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 2025: $79.0B
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 2025

Shares, value and share of portfolio for each institution holding Arthur J. Gallagher & Co.; share changes are against Q4 2024.

Institutions holding AJG in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Vanguard Group Inc30,411,264$10.5B0.19%+739,130+2.5%Added
BlackRock, Inc.20,142,524$6.95B0.15%+632,842+3.2%Added
JPMorgan Chase & Co17,372,745$6.00B0.46%+4,815,207+38.3%Added
FMR LLC13,728,232$4.74B0.30%+1,769,052+14.8%Added
Capital World Investors11,574,183$4.00B0.65%+3,374,770+41.2%Added
State Street Corp10,625,847$3.67B0.15%+343,783+3.3%Added
Capital International Investors7,225,946$2.49B0.49%−2,841,701−28.2%Reduced
Morgan Stanley7,141,464$2.47B0.18%+658,613+10.2%Added
Geode Capital Management, LLC6,625,323$2.28B0.18%+347,330+5.5%Added
Norges Bank4,708,379$1.63B0.23%−299,869−6.0%Reduced
Wellington Management Group LLP2,959,673$1.02B0.20%+137,354+4.9%Added
Massachusetts Financial Services Co2,873,049$991.9M0.33%−60,939−2.1%Reduced
Brown Advisory Inc2,789,959$963.2M1.38%−167,674−5.7%Reduced
Northern Trust Corp2,364,759$816.4M0.12%+9,458+0.4%Added
WCM Investment Management, LLC2,336,591$796.2M2.05%+7,594+0.3%Added
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.2,286,895$789.5M0.73%+373,819+19.5%Added
Principal Financial Group Inc2,070,661$714.9M0.40%+67,424+3.4%Added
Charles Schwab Investment Management Inc2,063,679$712.5M0.13%+34,423+1.7%Added
Invesco Ltd.1,851,427$639.2M0.12%−45,615−2.4%Reduced
UBS Asset Management Americas Inc1,529,566$528.1M0.14%+90,606+6.3%Added
Janus Henderson Group PLC1,530,375$521.6M0.29%+30,500+2.0%Added
Bank of New York Mellon Corp1,486,977$513.4M0.10%+31,723+2.2%Added
Capital Research Global Investors1,462,182$504.8M0.11%+1,195,146+447.6%Added
Goldman Sachs Group Inc1,458,113$503.4M0.10%+322,861+28.4%Added
Envestnet Asset Management Inc1,425,966$492.3M0.16%−52,088−3.5%Reduced
FIL Ltd1,372,689$473.9M0.45%+514,202+59.9%Added
Bank of America Corp1,370,629$473.2M0.04%+76,800+5.9%Added
Legal & General Group Plc1,309,598$452.1M0.12%+22,212+1.7%Added
Alliancebernstein L.P.1,209,424$417.5M0.15%+271,014+28.9%Added
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main1,191,747$411.4M0.48%+568,831+91.3%Added
Findlay Park Partners LLP1,172,201$404.7M4.16%+15,600+1.3%Added
UBS Group AG1,149,467$396.8M0.09%+1,319+0.1%Added
Brown Brothers Harriman & Co1,112,468$384.1M2.68%−307,669−21.7%Reduced
Baillie Gifford & Co1,036,663$357.9M0.31%−592,302−36.4%Reduced
California Public Employees Retirement System992,679$342.7M0.24%−18,545−1.8%Reduced
TD Asset Management Inc918,009$316.9M0.29%+25,300+2.8%Added
Manufacturers Life Insurance Company, The884,316$305.3M0.29%−60,168−6.4%Reduced
Winslow Capital Management, LLC823,622$284.3M1.13%−1,711,127−67.5%Reduced
Guinness Asset Management LTD819,048$282.6M5.37%−21,978−2.6%Reduced
Beck Mack & Oliver LLC782,909$270.3M5.40%+11,583+1.5%Added
Axiom Investors LLC781,227$269.7M2.59%+201,900+34.9%Added
Voya Investment Management LLC764,941$263.7M0.29%+54,714+7.7%Added
Mawer Investment Management Ltd.739,307$255.2M1.23%−22,641−3.0%Reduced
Dimensional Fund Advisors LP736,167$254.1M0.06%+7,257+1.0%Added
Boston Partners732,953$252.5M0.31%+55,840+8.2%Added
Swiss National Bank704,500$243.2M0.17%−600−0.1%Reduced
Nuveen, LLC697,095$240.7M0.08%+697,095New
Chilton Investment Co LLC678,756$234.3M5.72%+42,257+6.6%Added
Viking Global Investors LPSuperinvestorViking Global Investors666,552$230.1M0.73%+666,552New
Lord, Abbett & Co. LLC654,088$225.8M0.80%+83,069+14.5%Added
1832 Asset Management L.P.640,911$221.3M0.42%+621,143+3,142.2%Added
Barclays PLC637,034$219.9M0.10%+105,990+20.0%Added
Bessemer Group Inc626,919$216.4M0.39%+518+0.1%Added
APG Asset Management N.V.667,854$213.5M0.66%+319,820+91.9%Added
Royal Bank of Canada585,933$202.3M0.05%−63,318−9.8%Reduced
Raymond James Financial Inc581,231$200.7M0.08%+6,679+1.2%Added
Bank Julius Baer & Co. Ltd, Zurich573,039$197.3M0.64%+39,278+7.4%Added
Sumitomo Mitsui Trust Holdings, Inc.564,304$194.8M0.14%+2,974+0.5%Added
HSBC Holdings PLC557,224$192.0M0.13%+37,787+7.3%Added
Amundi556,338$191.6M0.07%−167,109−23.1%Reduced
Unisphere Establishment530,300$183.1M1.60%00.0%Unchanged
Franklin Resources Inc528,189$182.4M0.05%+1,328+0.3%Added
Deutsche Bank AG525,679$181.5M0.07%+34,928+7.1%Added
National Pension Service504,103$174.0M0.17%+58,382+13.1%Added
Kovitz Investment Group Partners, LLC488,468$168.6M0.85%−9,009−1.8%Reduced
Rhumbline Advisers459,659$158.7M0.15%+38,564+9.2%Added
Allianz Asset Management GmbH458,747$158.4M0.23%−101,520−18.1%Reduced
Congress Asset Management Co457,577$158.0M1.18%+1,075+0.2%Added
Stonehage Fleming Financial Services Holdings Ltd454,220$156.8M5.51%−8,177−1.8%Reduced
Wells Fargo & Company433,536$149.7M0.04%+38,399+9.7%Added
Price T Rowe Associates Inc426,280$147.2M0.02%+13,976+3.4%Added
Millennium Management LLC424,899$146.7M0.14%−368,744−46.5%Reduced
Aviva PLC404,061$139.5M0.34%+12,845+3.3%Added
Ci Investments Inc.399,987$138.1M0.58%+93,395+30.5%Added
CCLA Investment Management Ltd396,312$136.8M2.42%+10,375+2.7%Added
DSM Capital Partners LLC395,566$136.6M2.39%+395,566New
Artisan Partners Limited Partnership393,494$135.8M0.22%+32,218+8.9%Added
Regions Financial Corp389,284$134.4M1.00%−9,075−2.3%Reduced
SEI Investments Co387,334$133.7M0.17%−355,412−47.9%Reduced
Natixis Advisors, L.P.386,879$133.6M0.25%+22,422+6.2%Added
Nomura Asset Management Co Ltd380,252$131.3M0.40%+55,893+17.2%Added
Fenimore Asset Management Inc366,904$126.7M2.68%−37,098−9.2%Reduced
BNP Paribas Arbitrage, SA351,536$121.4M0.09%−170,078−32.6%Reduced
California State Teachers Retirement System351,139$121.2M0.15%−455−0.1%Reduced
Credit Agricole S A341,723$118.0M0.44%+304,990+830.3%Added
Universal- Beteiligungs- und Servicegesellschaft mbH335,339$115.8M0.23%+22,581+7.2%Added
Westfield Capital Management Co LP324,635$112.1M0.55%−21,597−6.2%Reduced
Renaissance Technologies LLC319,000$110.1M0.17%+145,800+84.2%Added
Close Asset Management Ltd307,429$106.2M3.05%−85,215−21.7%Reduced
Welch & Forbes LLC297,886$102.8M1.35%−2,255−0.8%Reduced
Zacks Investment Management295,661$102.1M0.95%−192,928−39.5%Reduced
American Century Companies Inc295,181$101.9M0.06%+276,126+1,449.1%Added
Adage Capital Partners GP, L.L.C.287,103$99.1M0.18%−121,300−29.7%Reduced
CIBC Private Wealth Group, LLC305,200$95.1M0.20%+186,209+156.5%Added
Woodley Farra Manion Portfolio Management Inc274,490$94.8M4.71%−1290.0%Reduced
Citigroup Inc268,192$92.6M0.07%+121,603+83.0%Added
Kornitzer Capital Management Inc263,227$90.9M1.87%−18,891−6.7%Reduced
Comerica Bank257,630$88.9M0.37%+4,323+1.7%Added
Bank of Montreal247,418$85.4M0.05%−33,483−11.9%Reduced
Marshall Wace, LLP244,697$84.5M0.11%−61,223−20.0%Reduced