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Arthur J. Gallagher & Co

1,332 hedge funds and large institutions have $69.6B invested in Arthur J. Gallagher & Co in 2025 Q3 according to their latest regulatory filings, with 112 funds opening new positions, 507 increasing their positions, 487 reducing their positions, and 136 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less capital invested

Capital invested by funds: $ → $

less ownership

Funds ownership:

3% less funds holding

Funds holding: 1,3721,332 (-40)

18% less first-time investments, than exits

New positions opened: 112 | Existing positions closed: 136

30% less funds holding in top 10

Funds holding in top 10: 3726 (-11)

Holders
1,332
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
26
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$242M
Puts
$113M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
MCM
1351
Marsico Capital Management
Colorado
GC
1352
Gillson Capital
Illinois
SCM
1353
Silvant Capital Management
Georgia
SBH
1354
Segall Bryant & Hamill
Illinois
QT
1355
Quantbot Technologies
New York
TSS
1356
Two Sigma Securities
New York
TPM
1357
Triasima Portfolio Management
Quebec, Canada
OQS
1358
Occudo Quantitative Strategies
Florida
YIH
1359
Y-Intercept (HK)
Hong Kong
ACM
1360
AlphaStar Capital Management
North Carolina
Parallax Volatility Advisers
1361
Parallax Volatility Advisers
California
WG
1362
Winton Group
United Kingdom
IFU
1363
iSAM Funds (UK)
United Kingdom
DFCM
1364
Dark Forest Capital Management
Puerto Rico
Two Sigma Advisers
1365
Two Sigma Advisers
New York
Qube Research & Technologies (QRT)
1366
Qube Research & Technologies (QRT)
United Kingdom
SGI
1367
Summit Global Investments
Utah
DAS
1368
DMKC Advisory Services
Iowa
AIC
1369
Anthracite Investment Company
Texas
VF
1370
Virtu Financial
New York
QCM
1371
Qsemble Capital Management
New York
QC
1372
Quantessence Capital
New York
VWM
1373
VCI Wealth Management
Missouri
PEAK6
1374
PEAK6
Illinois
UBP
1375
Union Bancaire Privee
Switzerland