Arthur J. Gallagher & Co.: which funds bought and sold

Institutions that bought and sold Arthur J. Gallagher & shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 603 institutions that filed 13F reports for both quarters added to or opened positions in Arthur J. Gallagher &, and 585 cut or closed them. Together they added a net 1.7M shares, +0.7% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 3.7M shares (+5.5%); index fund managers were net buyers of 1.0M shares (+1.4%). 142 opened a new position and 107 sold out entirely.

Bought, Q2 2026 603 institutions, 142 of them new holders Sold, Q2 2026 585 institutions, 107 of them sold out

Net change, all compared +1.7M shares (+0.7%)

Net change, active managers +3.7M shares (+5.5%), 42 bought, 39 sold

Buyers versus sellers

institutions compared, 1,370

603 bought 182 585 sold

Active managers and hedge funds 42 bought · 39 sold · +3.7M

Index fund managers 9 bought · 3 sold · +1.0M

Other institutions 552 bought · 543 sold · −3.1M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
FMR LLC Active manager	+4.0M +27.5%	18.6M	$4.3B
Eagle Capital Management LLC Active manager	+2.2M +83.5%	4.9M	$1.1B
Dodge & Cox Active manager	+2.0M +27.3%	9.4M	$2.1B
Manufacturers Life Insurance Company, The	+1.6M +494.4%	1.9M	$440M
Brave Warrior Advisors, LLC	+1.3M New position	1.3M	$295M
First Pacific Advisors, LP Active manager	+949K +244.7%	1.3M	$307M
Goldman Sachs Group Inc	+865K +44.3%	2.8M	$647M
Arrowstreet Capital, Limited Partnership Hedge fund	+687K +2355.4%	716K	$164M
Blackrock, Inc. Index funds	+515K +2.7%	19.8M	$4.6B
Tidal Investments LLC	+480K +303.7%	639K	$147M
Adage Capital Partners Gp, L.L.C. Hedge fund	+458K +134.5%	799K	$183M
Van Lanschot Kempen Investment Management N.V.	+416K New position	416K	$95.5M
State Street Corp Index funds	+330K +3.0%	11.3M	$2.6B
Mairs & Power Inc Active manager	+312K New position	312K	$71.5M
BNP Paribas Financial Markets	+281K +81.1%	628K	$144M
Franklin Resources Inc Active manager	+265K +13.6%	2.2M	$509M
Principal Financial Group Inc	+253K +7.8%	3.5M	$802M
Healthcare Of Ontario Pension Plan Trust Fund	+245K +1519.1%	261K	$60M
Gillson Capital LP	+240K +207.8%	356K	$81.8M
Prana Capital Management, LP Hedge fund	+224K New position	224K	$51.5M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
FMR LLC Active manager	+4.0M +27.5%	18.6M	$4.3B
Eagle Capital Management LLC Active manager	+2.2M +83.5%	4.9M	$1.1B
Dodge & Cox Active manager	+2.0M +27.3%	9.4M	$2.1B
First Pacific Advisors, LP Active manager	+949K +244.7%	1.3M	$307M
Arrowstreet Capital, Limited Partnership Hedge fund	+687K +2355.4%	716K	$164M
Adage Capital Partners Gp, L.L.C. Hedge fund	+458K +134.5%	799K	$183M
Mairs & Power Inc Active manager	+312K New position	312K	$71.5M
Franklin Resources Inc Active manager	+265K +13.6%	2.2M	$509M
Prana Capital Management, LP Hedge fund	+224K New position	224K	$51.5M
Gotham Asset Management, LLC Hedge fund	+164K +258.3%	228K	$52.3M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Jpmorgan Chase & Co	−5.2M −26.6%	14.4M	$3.3B
Morgan Stanley	−1.5M −36.1%	2.6M	$595M
Capital World Investors Active manager	−1.3M −9.4%	12.5M	$2.9B
Wellington Management Group LLP Active manager	−1.3M −50.4%	1.3M	$294M
Boston Partners Active manager	−797K −98.6%	11K	$2.6M
APG Asset Management N.V.	−752K −63.9%	425K	$85.4M
Viking Global Investors LP Hedge fund	−727K Sold out	0	—
Mitsubishi Ufj Asset Management Co., Ltd.	−676K −52.0%	625K	$143M
Citadel Advisors LLC Hedge fund	−652K −85.5%	111K	$25.4M
Focus Partners Wealth	−608K −44.1%	771K	$177M
Capital International Investors Active manager	−594K −22.9%	2.0M	$460M
Artisan Partners Limited Partnership Active manager	−522K −59.0%	363K	$83.3M
Alliancebernstein L.P. Active manager	−517K −66.2%	264K	$57.3M
California Public Employees Retirement System	−488K −61.9%	301K	$69.1M
Capital Research Global Investors Active manager	−394K −13.2%	2.6M	$594M
Brown Advisory Inc Active manager	−350K −22.2%	1.2M	$282M
Bank Of America Corp	−313K −16.9%	1.5M	$354M
Marshall Wace, LLP Hedge fund	−272K −98.5%	4,115	$944,681
American Century Companies Inc Active manager	−263K −93.8%	18K	$4M
Woodline Partners LP Hedge fund	−244K −29.0%	596K	$137M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Capital World Investors Active manager	−1.3M −9.4%	12.5M	$2.9B
Wellington Management Group LLP Active manager	−1.3M −50.4%	1.3M	$294M
Boston Partners Active manager	−797K −98.6%	11K	$2.6M
Viking Global Investors LP Hedge fund	−727K Sold out	0	—
Citadel Advisors LLC Hedge fund	−652K −85.5%	111K	$25.4M
Capital International Investors Active manager	−594K −22.9%	2.0M	$460M
Artisan Partners Limited Partnership Active manager	−522K −59.0%	363K	$83.3M
Alliancebernstein L.P. Active manager	−517K −66.2%	264K	$57.3M
Capital Research Global Investors Active manager	−394K −13.2%	2.6M	$594M
Brown Advisory Inc Active manager	−350K −22.2%	1.2M	$282M

New positions

largest by value

Institution	Shares	Value June 30, 2026
Brave Warrior Advisors, LLC	1.3M	$295M
Van Lanschot Kempen Investment Management N.V.	416K	$95.5M
Mairs & Power IncActive manager	312K	$71.5M
Prana Capital Management, LPHedge fund	224K	$51.5M
Zurich Insurance Group Ltd	200K	$46M
Nexus Investment Management Ulc	150K	$34.4M
1832 Asset Management L.P.	129K	$29.5M
Osterweis Capital Management Inc	92K	$21.1M
Marsico Capital Management LLCActive manager	82K	$18.8M
Madison Asset Management, LLC	72K	$16.6M

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Viking Global Investors LPHedge fund	727K	$158M
Sandhill Capital Partners LLC	172K	$37.3M
Verition Fund Management LLCHedge fund	91K	$19.6M
Generate Investment Management Ltd	90K	$19.5M
Renaissance Technologies LLCHedge fund	77K	$16.6M
Fora Capital, LLC	40K	$8.7M
Mediolanum International Funds Ltd	37K	$7.9M
Xtx Topco Ltd	36K	$7.8M
Jain Global LLCHedge fund	33K	$7.1M
Eulav Asset Management	25K	$5.5M

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 1,283
Ten largest holders: 53.7%
Index fund managers: 30.6%
Active managers and hedge funds: 30.0%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	42	39	9	8	+3.7M	+5.5%
Index fund managers	9	3	0	0	+1.0M	+1.4%
Other institutions	552	543	133	99	−3.1M	−3.5%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Arthur J. Gallagher &.

Only managers that filed a holdings report for both quarters are compared (1,370 here). 38 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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